n-Alkanes formed by methyl-methylene addition as a source of meteoritic aliphatics.

Autor: Merino P; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain. pablo.merino@csic.es., Martínez L; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain., Santoro G; Instituto de Estructura de la Materia (IEM), CSIC, Serrano 121, 28006, Madrid, Spain., Martínez JI; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain., Lauwaet K; Instituto Madrileño de Estudios Avanzados IMDEA Nanociencia, Madrid, Spain., Accolla M; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain.; INAF-Osservatorio Astrofisico di Catania, Via Santa Sofia 78, 95123, Catania, Italy., Ruiz Del Arbol N; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain., Sánchez-Sánchez C; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain., Martín-Jimenez A; Instituto Madrileño de Estudios Avanzados IMDEA Nanociencia, Madrid, Spain., Otero R; Instituto Madrileño de Estudios Avanzados IMDEA Nanociencia, Madrid, Spain.; Dep. De Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049, Madrid, Spain.; IFIMAC, Universidad Autónoma de Madrid, 28049, Madrid, Spain., Piantek M; Laboratorio de Microscopias Avanzadas, Universidad de Zaragoza, 50018, Zaragoza, Spain.; Departamento de Física de la Materia Condensada, Universidad de Zaragoza, 50018, Zaragoza, Spain., Serrate D; Laboratorio de Microscopias Avanzadas, Universidad de Zaragoza, 50018, Zaragoza, Spain.; Departamento de Física de la Materia Condensada, Universidad de Zaragoza, 50018, Zaragoza, Spain.; Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-UNIZAR, 50009, Zaragoza, Spain., Lebrón-Aguilar R; Instituto de Química-Física 'Blas Cabrera' (IQF), CSIC, Serrano, 119, 28006, Madrid, Spain., Quintanilla-López JE; Instituto de Química-Física 'Blas Cabrera' (IQF), CSIC, Serrano, 119, 28006, Madrid, Spain., Mendez J; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain., De Andres PL; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain., Martín-Gago JA; Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain.

Publikováno v: Communications chemistry [Commun Chem] 2024 Jul 30; Vol. 7 (1), pp. 165. Date of Electronic Publication: 2024 Jul 30.

Correction: In situ observation of the on-surface thermal dehydrogenation of n -octane on Pt(111).

Autor: Arribas D; Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain. pablo.merino@csic.es., Villalobos-Vilda V; Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain. pablo.merino@csic.es., Tosi E; Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain. pablo.merino@csic.es.; Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy., Lacovig P; Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy., Baraldi A; Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy.; Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy., Bignardi L; Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy., Lizzit S; Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy., Martínez JI; Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain. pablo.merino@csic.es., de Andres PL; Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain. pablo.merino@csic.es.; On leave of absence at nanoteeche@surfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology, 8600-Dübendorf, Switzerland., Gutiérrez A; Applied Physics Department, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7, 28049 Madrid, Spain.; Instituto Nicolás Cabrera, Cantoblanco, Calle Francisco Tomás y Valiente, 7, 28049 Madrid, Spain., Martín-Gago JÁ; Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain. pablo.merino@csic.es., Merino P; Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain. pablo.merino@csic.es.

Publikováno v: Nanoscale [Nanoscale] 2023 Sep 14; Vol. 15 (35), pp. 14680. Date of Electronic Publication: 2023 Sep 14.

Monitoring and Forecasting COVID-19: Heuristic Regression, Susceptible-Infected-Removed Model and, Spatial Stochastic.

Autor: de Andres PL; ICMM, Consejo Superior de Investigaciones Cientificas, Madrid, Spain., de Andres-Bragado L; Department of Biology, University of Fribourg, Fribourg, Switzerland., Hoessly L; Department of Mathematics, University of Copenhagen, Copenhagen, Denmark.

Publikováno v: Frontiers in applied mathematics and statistics [Front Appl Math Stat] 2021 May 21; Vol. 7, pp. 650716. Date of Electronic Publication: 2021 May 21 (Print Publication: 2021).

Trial of Sodium Phenylbutyrate-Taurursodiol for Amyotrophic Lateral Sclerosis.

Autor: Paganoni S; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Macklin EA; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Hendrix S; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Berry JD; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Elliott MA; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Maiser S; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Karam C; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Caress JB; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Owegi MA; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Quick A; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Wymer J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Goutman SA; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Heitzman D; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Heiman-Patterson T; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Jackson CE; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Quinn C; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Rothstein JD; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Kasarskis EJ; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Katz J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Jenkins L; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Ladha S; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Miller TM; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Scelsa SN; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Vu TH; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Fournier CN; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Glass JD; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Johnson KM; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Swenson A; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Goyal NA; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Pattee GL; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Andres PL; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Babu S; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Chase M; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Dagostino D; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Dickson SP; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Ellison N; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Hall M; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Hendrix K; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Kittle G; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., McGovern M; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Ostrow J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Pothier L; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Randall R; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Shefner JM; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Sherman AV; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Tustison E; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Vigneswaran P; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Walker J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Yu H; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Chan J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Wittes J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Cohen J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Klee J; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Leslie K; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Tanzi RE; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Gilbert W; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Yeramian PD; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Schoenfeld D; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes)., Cudkowicz ME; From the Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School (S.P., J.D.B., S.B., M.C., D.D., M.M., J.O., L.P., A.V.S., E.T., P.V., J. Walker, H.Y., R.E.T., M.E.C.), the Biostatistics Center, Massachusetts General Hospital, Harvard Medical School (E.A.M., J. Chan, D.S.), and Spaulding Rehabilitation Hospital, Harvard Medical School (S.P.), Boston, the University of Massachusetts Memorial Medical Center, Worcester (M.A.O.), and Amylyx Pharmaceuticals (J. Cohen, J. Klee, K.L., P.D.Y.) and Harvard University (W.G.), Cambridge - all in Massachusetts; Pentara, Millcreek, UT (S.H., S.P.D., N.E., K.H.); Swedish Neuroscience Institute, Seattle (M.A.E.); Hennepin Healthcare, Minneapolis (S.M.); the Department of Neurology, Oregon Health and Science University, Portland (C.K.); the Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC (J.B.C.); the Department of Neurology, Ohio State University College of Medicine, Columbus (A.Q.); the Department of Neurology, University of Florida College of Medicine, Gainesville (J. Wymer); the Department of Neurology, University of Michigan, Ann Arbor (S.A.G.); Texas Neurology, Dallas (D.H.); the Department of Neurology, Lewis Katz School of Medicine, Temple University (T.H.-P.), and the Department of Neurology, University of Pennsylvania Perelman School of Medicine (C.Q.) - both in Philadelphia; Glenn Biggs Institute for Alzheimer's and Neurodegenerative Disease, University of Texas Health Science Center at San Antonio, San Antonio (C.E.J.); the Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore (J.D.R.); the Department of Neurology, University of Kentucky College of Medicine, Lexington (E.J.K.); California Pacific Medical Center and Forbes Norris MDA-ALS Research and Treatment Center, San Francisco (J. Katz, L.J.); Barrow Neurological Institute, Phoenix, AZ (S.L., M.H., G.K., R.R., J.M.S.); the Department of Neurology, Washington University School of Medicine in St. Louis, St. Louis (T.M.M.); the Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York (S.N.S.); the Department of Neurology, University of South Florida Morsani College of Medicine, Tampa (T.H.V.); the Departments of Neurology and Pathology, Emory University School of Medicine, Atlanta (C.N.F., J.D.G.); Ochsner Health System, New Orleans (K.M.J.); the Department of Neurology, University of Iowa Carver College of Medicine, Iowa City (A.S.); the Department of Neurology, University of California, Irvine, School of Medicine, Irvine (N.A.G.); Neurology Associates, Lincoln, NB (G.L.P.); independent consultant, Nobleboro, ME (P.L.A.); and Statistics Collaborative, Washington, DC (J. Wittes).

Publikováno v: The New England journal of medicine [N Engl J Med] 2020 Sep 03; Vol. 383 (10), pp. 919-930.

Chemical equilibrium in AGB atmospheres: Successes, failures, and prospects for small molecules, clusters, and condensates.

Autor: Agúndez M; Instituto de Física Fundamental, CSIC, C/ Serrano 123, 28006 Madrid, Spain., Martínez JI; Instituto de Ciencia de Materiales de Madrid, CSIC, C/ Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Spain., de Andres PL; Instituto de Ciencia de Materiales de Madrid, CSIC, C/ Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Spain., Cernicharo J; Instituto de Física Fundamental, CSIC, C/ Serrano 123, 28006 Madrid, Spain., Martín-Gago JA; Instituto de Ciencia de Materiales de Madrid, CSIC, C/ Sor Juana Inés de la Cruz 3, 28049 Cantoblanco, Spain.

Publikováno v: Astronomy and astrophysics [Astron Astrophys] 2020 May; Vol. 637. Date of Electronic Publication: 2020 May 14.