Delineating the molecular and phenotypic spectrum of the SETD1B-related syndrome
| Autor: | Reshmi Ramakrishnan, Catherine Quindipan, Claudia A. L. Ruivenkamp, Nicholas M. Allen, Mashaya Zaman, Daniela Q.C.M. Barge-Schaapveld, Annalisa Vetro, Stephanie Efthymiou, James R. Lupski, Kara C. Klemp, Zou Pan, Adam Jackson, Marielle E. van Gijn, Joshua Scheck, Marielle Alders, Mariet W. Elting, Karla A. Peña-Guerra, Stephen R. Braddock, Rolph Pfundt, Ivan K. Chinn, Lin Yang, Lauren Schenck, Xiaodong Wang, Melissa Lees, Houda Zghal Elloumi, Shehla Mohammed, Sally Ann Lynch, Henry Houlden, Jennifer Keller-Ramey, Stefan T. Arold, Anneke Kievit, Jefferey McGlothlin, Marjon van Slegtenhorst, Marjolein H. Willemsen, Hannah K. Robinson, Bert B.A. de Vries, Irma Järvelä, Kelly J. Cardona-Londoño, Yolande van Bever, Abeltje M. Polstra, Neda Mazaheri, Barbara W. van Paassen, Maura R.Z. Ruzhnikov, Lewis Pang, Theresa Mihalic Mosher, J. Lawrence Merritt, Jing Peng, Sadegheh Haghshenas, Amy Crunk, Christian Gilissen, Fleur Vansenne, Cacha M.P.C.D. Peeters-Scholte, Richard E. Person, Hamid Galehdari, Leena Lauronen, Abbey M. Putnam, Jennifer Kerkhof, Matthew Pastore, Angela Sun, Caroline M. Kehoe, Alexandra Garza-Flores, Julia Baptista, Martino Montomoli, Selina H. Banu, Tahsin Stefan Barakat, Adi Reich, Luis Alberto Pedroza, Laurence E. Walsh, Renzo Guerrini, Ghayda M. Mirzaa, Peter D. Turnpenny, J. Austin Hamm, Xi Lin, Kristina Lanko, Reza Maroofian, Tuomo Määttä, Yana Lara-Taranchenko, Kim L. McBride, Jenny Thies, Andrew E. Timms, Shaoping Huang, Suzanne M. Leal, Daniel C. Koboldt, Rebecca Baud, Gretchen E. Rosso, Haley McConkey, Matthew A. Deardorff, Marjolein J.A. Weerts, Francisco J. Guzmán-Vega, Tamison Jewett, Siddharth Banka, Kristin G. Monaghan, Isabelle Schrauwen, Bekim Sadikovic, Sanjay M. Sisodiya, Victoria Harrison, Susanne Koning |
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| Rok vydání: | 2021 |
| Předmět: |
Genetics
0303 health sciences Language delay Mechanism (biology) Biology medicine.disease Penetrance 03 medical and health sciences 0302 clinical medicine Neurodevelopmental disorder Intellectual disability medicine Autism Global developmental delay Epigenetics 030217 neurology & neurosurgery 030304 developmental biology |
| DOI: | 10.1101/2021.02.11.430742 |
| Popis: | Pathogenic variants in SETD1B have been associated with a syndromic neurodevelopmental disorder including intellectual disability, language delay and seizures. To date, clinical features have been described for eleven patients with (likely) pathogenic SETD1B sequence variants. We perform an in-depth clinical characterization of a cohort of 36 unpublished individuals with SETD1B sequence variants, describing their molecular and phenotypic spectrum. Selected variants were functionally tested using in vitro and genome-wide methylation assays. Our data present evidence for a loss-of-function mechanism of SETD1B variants, resulting in a core clinical phenotype of global developmental delay, language delay including regression, intellectual disability, autism and other behavioral issues, and variable epilepsy phenotypes. Developmental delay appeared to precede seizure onset, suggesting SETD1B dysfunction impacts physiological neurodevelopment even in the absence of epileptic activity. Interestingly, males are significantly overrepresented and more severely affected, and we speculate that sex-linked traits could affect susceptibility to penetrance and the clinical spectrum of SETD1B variants. Finally, despite the possibility of non-redundant contributions of SETD1B and its paralogue SETD1A to epigenetic control, the clinical phenotypes of the related disorders share many similarities, indicating that elucidating shared and divergent downstream targets of both genes will help to understand the mechanism leading to the neurobehavioral phenotypes. Insights from this extensive cohort will facilitate the counseling regarding the molecular and phenotypic landscape of newly diagnosed patients with the SETD1B-related syndrome. |
| Databáze: | OpenAIRE |
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