ClinVar Miner

Submissions for variant NM_000431.4(MVK):c.721C>T (p.Arg241Cys)

gnomAD frequency: 0.00001  dbSNP: rs758427037
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001969264 SCV002256637 likely pathogenic Mevalonic aciduria; Porokeratosis 3, disseminated superficial actinic type; Hyperimmunoglobulin D with periodic fever 2024-01-28 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 241 of the MVK protein (p.Arg241Cys). This variant is present in population databases (rs758427037, gnomAD 0.003%). This missense change has been observed in individual(s) with mevalonic aciduria (PMID: 22271696). ClinVar contains an entry for this variant (Variation ID: 1472357). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt MVK protein function with a positive predictive value of 80%. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic.

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