Truncating Variants in NAA15 Are Associated with Variable Levels of Intellectual Disability, Autism Spectrum Disorder, and Congenital Anomalies

N-alpha-acetylation is a common co-translational protein modification that is essential for normal cell function in humans. We previously identified the genetic basis of an X-linked infantile lethal Mendelian disorder involving a c.109T>C (p.Ser37Pro) missense variant in NAA10, which encodes the catalytic subunit of the N-terminal acetyltransferase A (NatA) complex. The auxiliary subunit of the NatA complex, NAA15, is the dimeric binding partner for NAA10. Through a genotype-first approach with whole-exome or genome sequencing (WES/WGS) and targeted sequencing analysis, we identified and phenotypically characterized 38 individuals from 33 unrelated families with 25 different de novo or inherited, dominantly acting likely gene disrupting (LGD) variants in NAA15.

Source: The American Journal of Human Genetics - April 12, 2018 Category: Genetics & Stem Cells Authors: Hanyin Cheng, Avinash V. Dharmadhikari, Sylvia Varland, Ning Ma, Deepti Domingo, Robert Kleyner, Alan F. Rope, Margaret Yoon, Asbj ørg Stray-Pedersen, Jennifer E. Posey, Sarah R. Crews, Mohammad K. Eldomery, Zeynep Coban Akdemir, Andrea M. Lewis, Vernon Tags: Report Source Type: research