De novo EIF2AK1 and EIF2AK2 variants are associated with developmental delay, leukoencephalopathy, and neurologic decompensation, a neurodevelopmental syndrome closed to CACH syndrome
A new study published in the American Journal of Human Genetics identified the identification of nine unrelated individuals with heterozygous de novo missense variants in EIF2AK1 or EIF2AK2. Features seen in these nine individuals include white matter alterations, developmental delay, impaired language, cognitive impairment, ataxia, dysarthria in probands with verbal ability, hypotonia, hypertonia, and involuntary movements. Individuals with EIF2AK2 variants also exhibit neurological regression in the setting of febrile illness or infection. This study showed that EIF2AK2 missense variants cause a neurodevelopmental syndrome that may share phenotypic and pathogenic mechanisms with CACH/VWM.
- To read more about “CACH syndrome”
- Am J Hum Genet . 2020 Apr 2;106(4):570-583