Total submissions: 1
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Labcorp Genetics |
RCV000557643 | SCV000644149 | uncertain significance | 3-methylcrotonyl-CoA carboxylase 2 deficiency | 2018-03-02 | criteria provided, single submitter | clinical testing | This sequence change replaces glutamic acid with lysine at codon 99 of the MCCC2 protein (p.Glu99Lys). The glutamic acid residue is highly conserved and there is a small physicochemical difference between glutamic acid and lysine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with MCCC2-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). A different missense substitution at this codon (p.Glu99Gln) has been reported in individuals affected with 3MCC deficiency (PMID: 16010683, 11181649). 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. |