Patients with a Kabuki syndrome phenotype demonstrate DNA methylation abnormalities

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art_SOBREIRA_Patients_with_a_Kabuki_syndrome_phenotype_demonstrate_DNA_2017.PDF (925.84 KB)
Citações na Scopus
46
Tipo de produção
article
Data de publicação
2017
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
NATURE PUBLISHING GROUP
Autores
SOBREIRA, Nara
BRUCATO, Martha
ZHANG, Li
LADD-ACOSTA, Christine
ONGACO, Chrissie
ROMM, Jane
DOHENY, Kimberly F.
MINGRONI-NETTO, Regina C.
Citação
EUROPEAN JOURNAL OF HUMAN GENETICS, v.25, n.12, p.1335-1344, 2017
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Kabuki syndrome is a monogenic disorder caused by loss of function variants in either of two genes encoding histone-modifying enzymes. We performed targeted sequencing in a cohort of 27 probands with a clinical diagnosis of Kabuki syndrome. Of these, 12 had causative variants in the two known Kabuki syndrome genes. In 2, we identified presumptive loss of function de novo variants in KMT2A (missense and splice site variants), a gene that encodes another histone modifying enzyme previously exclusively associated with Wiedermann-Steiner syndrome. Although Kabuki syndrome is a disorder of histone modification, we also find alterations in DNA methylation among individuals with a Kabuki syndrome diagnosis relative to matched normal controls, regardless of whether they carry a variant in KMT2A or KMT2D or not. Furthermore, we observed characteristic global abnormalities of DNA methylation that distinguished patients with a loss of function variant in KMT2D or missense or splice site variants in either KMT2D or KMT2A from normal controls. Our results provide new insights into the relationship of genotype to epigenotype and phenotype and indicate cross-talk between histone and DNA methylation machineries exposed by inborn errors of the epigenetic apparatus.
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URI
https://observatorio.fm.usp.br/handle/OPI/25643
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Artigos e Materiais de Revistas Científicas - FM/MPE
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