Pathogenic SPTBN1 variants cause an autosomal dominant neurodevelopmental syndrome
| Autor: | Jessica Becker, Julia Bay, Deepa Ajit, Sheryl S. Moy, Katja Kloth, Michael T. Zimmermann, Pilar Cacheiro, Ingrid M.B.H. van de Laar, Richard H. van Jaarsveld, Queenie K-G Tan, Adriana S. Beltran, Allyn McConkie-Rosell, Keith A. Breau, Laura Schultz-Rogers, Deike Weiss, Damaris N Lorenzo, Marie T. McDonald, Robert Jech, Paul R. Mark, Erin Torti, Richard E. Person, Benjamin Cogné, Renske Oegema, Eva H. Brilstra, Robert Stratton, Koen L.I. van Gassen, Reginald James Edwards, Rebecca C. Spillmann, Michael C. Stankewich, Amy Kritzer, Liset Falcon Rodriguez, Parul Jayakar, Joseph T. Shieh, Margot A. Cousin, Elizabeth A. Normand, Jennifer L. Kemppainen, Jennifer MacKenzie, Hartmut Engels, Marjon van Slegtenhorst, Evangeline Kurtz-Nelson, Tianyun Wang, Yue Si, Damian Smedley, Bertrand Isidor, Blake A Creighton, Vimla Aggarwal, Michael Zech, Alvaro A. Beltran, Stefan Aretz, Brenda Temple, Simone Afriyie, Sarah E McKeown, Louise Bier, Tatjana Bierhals, Grace Yoon, Juliane Winkelmann, Swarnendu Tripathi, Brendan C. Lanpher, Amy Blevins, Pavel N. Pichurin, Eric W. Klee, Kathryn M. Harper, Cecilia Fairley, Lauren Gunderson, Ingo Helbig, Sruthi Dontu, Kirsten Cremer, Raphael Bernier, Helen V. Firth, Gretchen Parsons, Lorena J. Munoz, Evan E. Eichler, Alison S May, Grazia M.S. Mancini |
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| Přispěvatelé: | Clinical Genetics |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Heterozygote
Cytoskeleton organization macromolecular substances Biology Article 03 medical and health sciences Mice 0302 clinical medicine Intellectual disability Genetics medicine Animals Humans Genetic Predisposition to Disease Genetic Association Studies 030304 developmental biology Genes Dominant 0303 health sciences Genetic Variation Spectrin Heterozygote advantage medicine.disease Phenotype Hypotonia Neurodevelopmental Disorders Autism medicine.symptom Haploinsufficiency Neuroscience Neural development 030217 neurology & neurosurgery |
| Zdroj: | Nature Genetics, 53(7), 1006-1021. Nature Publishing Group Nature genetics Nat. Genet. 53, 1006-1021 (2021) |
| ISSN: | 1061-4036 |
| Popis: | SPTBN1 encodes βII-spectrin, the ubiquitously expressed β-spectrin that forms micrometer-scale networks associated with plasma membranes. Mice deficient in neuronal βII-spectrin have defects in cortical organization, developmental delay and behavioral deficiencies. These phenotypes, while less severe, are observed in haploinsufficient animals, suggesting that individuals carrying heterozygous SPTBN1 variants may also show measurable compromise of neural development and function. Here we identify heterozygous SPTBN1 variants in 29 individuals with developmental, language and motor delays; mild to severe intellectual disability; autistic features; seizures; behavioral and movement abnormalities; hypotonia; and variable dysmorphic facial features. We show that these SPTBN1 variants lead to effects that affect βII-spectrin stability, disrupt binding to key molecular partners, and disturb cytoskeleton organization and dynamics. Our studies define SPTBN1 variants as the genetic basis of a neurodevelopmental syndrome, expand the set of spectrinopathies affecting the brain and underscore the critical role of βII-spectrin in the central nervous system. SPTBN1 mutations cause a neurodevelopmental syndrome characterized by intellectual disability, language and motor delays, autism, seizures and other features. The variants disrupt βII-spectrin function and disturb cytoskeletal organization and dynamics. |
| Databáze: | OpenAIRE |
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