rs773818596

Description

This sequence change replaces arginine with glutamine at codon 519 of the MUSK protein (p.Arg519Gln). The arginine residue is highly conserved and there is a small physicochemical difference between arginine and glutamine. This variant is present in population databases (rs773818596, ExAC 0.01%). This variant has not been reported in the literature in individuals affected with MUSK-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.