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Genetic Epilepsy v0.1082 KDM4B Zornitza Stark Phenotypes for gene: KDM4B were changed from Global developmental delay, intellectual disability and neuroanatomical defects to Intellectual developmental disorder, autosomal dominant 65, MIM# 619320; Global developmental delay, intellectual disability and neuroanatomical defects
Genetic Epilepsy v0.1081 KDM4B Zornitza Stark reviewed gene: KDM4B: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Intellectual developmental disorder, autosomal dominant 65, MIM# 619320; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Genetic Epilepsy v0.950 KDM4B Zornitza Stark Marked gene: KDM4B as ready
Genetic Epilepsy v0.950 KDM4B Zornitza Stark Gene: kdm4b has been classified as Green List (High Evidence).
Genetic Epilepsy v0.950 KDM4B Zornitza Stark Classified gene: KDM4B as Green List (high evidence)
Genetic Epilepsy v0.950 KDM4B Zornitza Stark Gene: kdm4b has been classified as Green List (High Evidence).
Genetic Epilepsy v0.947 KDM4B Kristin Rigbye gene: KDM4B was added
gene: KDM4B was added to Genetic Epilepsy. Sources: Literature
Mode of inheritance for gene: KDM4B was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: KDM4B were set to PMID: 33232677
Phenotypes for gene: KDM4B were set to Global developmental delay, intellectual disability and neuroanatomical defects
Review for gene: KDM4B was set to GREEN
Added comment: Nine individuals with mono-allelic de novo or inherited variants in KDM4B.

All individuals presented with dysmorphic features and global developmental delay (GDD) with language and motor skills most affected. Three individuals had a history of seizures, and four had anomalies on brain imaging ranging from agenesis of the corpus callosum with hydrocephalus to cystic formations, abnormal hippocampi, and polymicrogyria.

In a knockout mouse the total brain volume was significantly reduced with decreased
size of the hippocampal dentate gyrus, partial agenesis of the corpus callosum, and ventriculomegaly.
Sources: Literature