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Published on: August 15, 2019
Biallelic null variants in ZNF142 cause global developmental delay with familial epilepsy and dysmorphic features
Shinichi Kameyama1,2, Takeshi Mizuguchi1, Hiromi Fukuda1,3
1Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Abstract:
Biallelic variants in ZNF142 at 2q35, which encodes zinc-finger protein 142, cause neurodevelopmental disorder with seizures or dystonia. We identified compound heterozygous null variants in ZNF142, NM_001105537.4:c.[1252C>T];[1274-2A>G],p.[Arg418*];[Glu426*], in Malaysian siblings suffering from global developmental delay with epilepsy and dysmorphism. cDNA analysis showed the marked reduction of ZNF142 transcript level through nonsense-mediated mRNA decay by these novel biallelic variants. The affected siblings present with global developmental delay and epilepsy in common, which were previously described, as well as dysmorphism, which was not recognized. It is important to collect patients with ZNF142 abnormality to define its phenotypic spectrum.
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