1. Biallelic variants in HECT E3 paralogs, HECTD4 and UBE3C, encoding ubiquitin ligases cause neurodevelopmental disorders that overlap with Angelman syndrome
- Author
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Eissa A. Faqeih, Malak Ali Alghamdi, Marwa A. Almahroos, Essa Alharby, Makki Almuntashri, Amnah M. Alshangiti, Prouteau Clément, Daniel G. Calame, Leila Qebibo, Lydie Burglen, Martine Doco-Fenzy, Mario Mastrangelo, Annalaura Torella, Filippo Manti, Vincenzo Nigro, Ziegler Alban, Ghadeer Saleh Alharbi, Jamil Amjad Hashmi, Rawya Alraddadi, Razan Alamri, Tadahiro Mitani, Barth Magalie, Zeynep Coban-Akdemir, Bilgen Bilge Geckinli, Davut Pehlivan, Antonio Romito, Vasiliki Karageorgou, Javier Martini, Estelle Colin, Dominique Bonneau, Aida Bertoli-Avella, James R. Lupski, Annalisa Pastore, Roy W.A. Peake, Ashraf Dallol, Majid Alfadhel, Naif A.M. Almontashiri, Faqeih, Eissa A, Alghamdi, Malak Ali, Almahroos, Marwa A, Alharby, Essa, Almuntashri, Makki, Alshangiti, Amnah M, Clément, Prouteau, Calame, Daniel G, Qebibo, Leila, Burglen, Lydie, Doco-Fenzy, Martine, Mastrangelo, Mario, Torella, Annalaura, Manti, Filippo, Nigro, Vincenzo, Alban, Ziegler, Alharbi, Ghadeer Saleh, Hashmi, Jamil Amjad, Alraddadi, Rawya, Alamri, Razan, Mitani, Tadahiro, Magalie, Barth, Coban-Akdemir, Zeynep, Geckinli, Bilgen Bilge, Pehlivan, Davut, Romito, Antonio, Karageorgou, Vasiliki, Martini, Javier, Colin, Estelle, Bonneau, Dominique, Bertoli-Avella, Aida, Lupski, James R, Pastore, Annalisa, Peake, Roy W A, Dallol, Ashraf, Alfadhel, Majid, Almontashiri, Naif A M, and Faqeih E. A. , Alghamdi M. A. , Almahroos M. A. , Alharby E., Almuntashri M., Alshangiti A. M. , Clément P., Calame D. G. , Qebibo L., Burglen L., et al.
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GENETİK VE KALITIM ,HECTD4 ,Intellectual disability ,Life Sciences (LIFE) ,Molecular Biology and Genetics ,Sağlık Bilimleri ,Tıbbi Genetik ,E3 ligase ,Neurobehavioral differences ,UBE3C ,Yaşam Bilimleri ,Health Sciences ,GENETICS & HEREDITY ,Moleküler Biyoloji ve Genetik ,Neurobehavioral difference ,Genetics (clinical) ,Internal Medicine Sciences ,Temel Bilimler ,Life Sciences ,Dahili Tıp Bilimleri ,Tıp ,MOLECULAR BIOLOGY & GENETICS ,Yaşam Bilimleri (LIFE) ,Genetik (klinik) ,Medicine ,Natural Sciences ,Medical Genetics - Abstract
© 2022 American College of Medical Genetics and GenomicsPurpose: Pathogenic variants in genes encoding ubiquitin E3 ligases are known to cause neurodevelopmental syndromes. Additional neurodevelopmental disorders associated with the other genes encoding E3 ligases are yet to be identified. Methods: Chromosomal analysis and exome sequencing were used to identify the genetic causes in 10 patients from 7 unrelated families with syndromic neurodevelopmental, seizure, and movement disorders and neurobehavioral phenotypes. Results: In total, 4 patients were found to have 3 different homozygous loss-of-function (LoF) variants, and 3 patients had 4 compound heterozygous missense variants in the candidate E3 ligase gene, HECTD4, that were rare, absent from controls as homozygous, and predicted to be deleterious in silico. In 3 patients from 2 families with Angelman-like syndrome, paralog-directed candidate gene approach detected 2 LoF variants in the other candidate E3 ligase gene, UBE3C, a paralog of the Angelman syndrome E3 ligase gene, UBE3A. The RNA studies in 4 patients with LoF variants in HECTD4 and UBE3C provided evidence for the LoF effect. Conclusion: HECTD4 and UBE3C are novel biallelic rare disease genes, expand the association of the other HECT E3 ligase group with neurodevelopmental syndromes, and could explain some of the missing heritability in patients with a suggestive clinical diagnosis of Angelman syndrome.
- Published
- 2022