Pathogenic variants in SMARCA5 , a chromatin remodeler, cause a range of syndromic neurodevelopmental features
Pathogenic variants in SMARCA5 , a chromatin remodeler, cause a range of syndromic neurodevelopmental features
Intellectual disability (ID) encompasses a wide spectrum of neurodevelopmental disorders, with many linked genetic loci. However, the underlying molecular mechanism for over 50% of the patients remains elusive. We describe mutations in SMARCA5, encoding the ATPase motor of the ISWI chromatin remodeler, as a cause of a novel neurodevelopmental disorder, identifying twelve individuals with de novo or dominantly segregating rare heterozygous variants. Accompanying phenotypes include mild developmental delay, frequent postnatal short stature, and microcephaly, and recurrent dysmorphic features. Loss of function of the SMARCA5 Drosophila ortholog Iswi led to smaller body size, reduced dendrite complexity, and tiling defects in larvae. In adult flies, Iswi neural knockdown caused decreased brain size, aberrant mushroom body morphology and abnormal locomotor function. Iswi loss of function was rescued by wild-type but not mutant SMARCA5. Our results demonstrate that SMARCA5 pathogenic variants cause a neurodevelopmental syndrome with mild facial dysmorphia.
Lee Hane、Tan Tiong Yang、Li Dong、Feldman Hagit Baris、Boy Nikolas、Grand Katheryn、McWalter Kirsty、Wakeling Emma、Hurst Jane、Bhoj Elizabeth J.、Gonzaga-Jauregui Claudia、Huang Yue、Martinez Julian A、Pais Lynn S.、Christodoulou John、Grebe Theresa、Kayser Matthew S.、Kurolap Alina、Hakonarson Hakon、Tiosano Dov、Bartholomew Dennis、Brown Dana、Lindstrom Kristin、Brunet Theresa、Brugger Melanie、Song Yuanquan、March Michael E.、Wang Qin、Nowaczyk Ma?gorzata J.M.、Choukair Daniela、Siemon Amy、Deardorff Matthew A.、Mathew Mariam、Guillen Sacoto Maria J.、White Susan M、Schwaibold Eva M.C.、Dava-Wala Ashita、Gong Naihua N.
基础医学遗传学神经病学、精神病学
Lee Hane,Tan Tiong Yang,Li Dong,Feldman Hagit Baris,Boy Nikolas,Grand Katheryn,McWalter Kirsty,Wakeling Emma,Hurst Jane,Bhoj Elizabeth J.,Gonzaga-Jauregui Claudia,Huang Yue,Martinez Julian A,Pais Lynn S.,Christodoulou John,Grebe Theresa,Kayser Matthew S.,Kurolap Alina,Hakonarson Hakon,Tiosano Dov,Bartholomew Dennis,Brown Dana,Lindstrom Kristin,Brunet Theresa,Brugger Melanie,Song Yuanquan,March Michael E.,Wang Qin,Nowaczyk Ma?gorzata J.M.,Choukair Daniela,Siemon Amy,Deardorff Matthew A.,Mathew Mariam,Guillen Sacoto Maria J.,White Susan M,Schwaibold Eva M.C.,Dava-Wala Ashita,Gong Naihua N..Pathogenic variants in SMARCA5 , a chromatin remodeler, cause a range of syndromic neurodevelopmental features[EB/OL].(2025-03-28)[2025-05-02].https://www.medrxiv.org/content/10.1101/2020.10.26.20217109.点此复制
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