ClinVar Miner

Submissions for variant NM_001352514.2(HLCS):c.1920G>A (p.Met640Ile)

dbSNP: rs2145777174
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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 RCV002039362 SCV002112168 uncertain significance Holocarboxylase synthetase deficiency 2022-10-10 criteria provided, single submitter clinical testing This sequence change replaces methionine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 493 of the HLCS protein (p.Met493Ile). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with HLCS-related conditions. ClinVar contains an entry for this variant (Variation ID: 1349920). 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. 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 not expected to disrupt HLCS protein function.

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