ClinVar Miner

Submissions for variant NM_012123.4(MTO1):c.71G>A (p.Arg24Gln)

dbSNP: rs200417760
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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 RCV001909309 SCV002186450 uncertain significance Mitochondrial hypertrophic cardiomyopathy with lactic acidosis due to MTO1 deficiency 2021-02-28 criteria provided, single submitter clinical testing 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The glutamine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with MTO1-related conditions. This variant is present in population databases (rs200417760, ExAC 0.01%). This sequence change replaces arginine with glutamine at codon 24 of the MTO1 protein (p.Arg24Gln). The arginine residue is moderately conserved and there is a small physicochemical difference between arginine and glutamine.

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