ClinVar Miner

Submissions for variant NM_001352514.2(HLCS):c.2476G>T (p.Ala826Ser)

dbSNP: rs376898721
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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 RCV001974860 SCV002214409 uncertain significance Holocarboxylase synthetase deficiency 2021-10-15 criteria provided, single submitter clinical testing This sequence change replaces alanine with serine at codon 679 of the HLCS protein (p.Ala679Ser). The alanine residue is weakly conserved and there is a moderate physicochemical difference between alanine and serine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with HLCS-related conditions. 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 serine 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. 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.

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