ClinVar Miner

Submissions for variant NM_001352514.2(HLCS):c.1550C>T (p.Thr517Ile)

gnomAD frequency: 0.00013  dbSNP: rs575286749
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000558830 SCV000631921 uncertain significance Holocarboxylase synthetase deficiency 2022-10-24 criteria provided, single submitter clinical testing This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 370 of the HLCS protein (p.Thr370Ile). This variant is present in population databases (rs575286749, gnomAD 0.02%). 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: 459943). 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. 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.
Fulgent Genetics, Fulgent Genetics RCV000558830 SCV000896809 uncertain significance Holocarboxylase synthetase deficiency 2021-07-27 criteria provided, single submitter clinical testing
Illumina Laboratory Services, Illumina RCV000558830 SCV001299309 uncertain significance Holocarboxylase synthetase deficiency 2018-01-12 criteria provided, single submitter clinical testing This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Natera, Inc. RCV000558830 SCV001455959 uncertain significance Holocarboxylase synthetase deficiency 2020-01-24 no assertion criteria provided clinical testing

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