학술논문
Haploinsufficiency of ZFHX3, encoding a key player in neuronal development, causes syndromic intellectual disability.
Document Type
Article
Author
Pérez Baca, María del Rocío; Jacobs, Eva Z.; Vantomme, Lies; Leblanc, Pontus; Bogaert, Elke; Dheedene, Annelies; De Cock, Laurenz; Haghshenas, Sadegheh; Foroutan, Aidin; Levy, Michael A.; Kerkhof, Jennifer; McConkey, Haley; Chen, Chun-An; Batzir, Nurit Assia; Wang, Xia; Palomares, María; Carels, Marieke; Dermaut, Bart; Sadikovic, Bekim; Menten, Björn
Source
Subject
*ZINC-finger proteins
*INTELLECTUAL disabilities
*STATURE
*AUTISM spectrum disorders
*NEURONAL differentiation
*SHORT stature
*DNA methylation
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Language
ISSN
0002-9297
Abstract
Neurodevelopmental disorders (NDDs) result from impaired development and functioning of the brain. Here, we identify loss-of-function (LoF) variation in ZFHX3 as a cause for syndromic intellectual disability (ID). ZFHX3 is a zinc-finger homeodomain transcription factor involved in various biological processes, including cell differentiation and tumorigenesis. We describe 42 individuals with protein-truncating variants (PTVs) or (partial) deletions of ZFHX3 , exhibiting variable intellectual disability and autism spectrum disorder, recurrent facial features, relative short stature, brachydactyly, and, rarely, cleft palate. ZFHX3 LoF associates with a specific methylation profile in whole blood extracted DNA. Nuclear abundance of ZFHX3 increases during human brain development and neuronal differentiation. ZFHX3 was found to interact with the chromatin remodeling BRG1/Brm-associated factor complex and the cleavage and polyadenylation complex, suggesting a function in chromatin remodeling and mRNA processing. Furthermore, ChIP-seq for ZFHX3 revealed that it predominantly binds promoters of genes involved in nervous system development. We conclude that loss-of-function variants in ZFHX3 are a cause of syndromic ID associating with a specific DNA methylation profile. [Display omitted] We identify loss-of-function (LoF) variation in ZFHX3 as a cause for syndromic intellectual disability. We show that LoF is associated with a specific methylation signature and that ZFHX3 targets promoters of genes implicated in neural development. Proteomics analysis indicates a contribution of ZFHX3 to chromatin remodeling and pre-messenger RNA processing. [ABSTRACT FROM AUTHOR]