ClinVar Miner

Submissions for variant NM_001370658.1(BTD):c.1274G>A (p.Gly425Glu)

dbSNP: rs397514402
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Counsyl RCV000672281 SCV000797374 uncertain significance Biotinidase deficiency 2018-01-24 criteria provided, single submitter clinical testing
Labcorp Genetics (formerly Invitae), Labcorp RCV000672281 SCV003525096 pathogenic Biotinidase deficiency 2023-08-17 criteria provided, single submitter clinical testing This sequence change replaces glycine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 445 of the BTD protein (p.Gly445Glu). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with biotinidase deficiency (PMID: 26810761). ClinVar contains an entry for this variant (Variation ID: 556288). 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 BTD protein function. This variant disrupts the p.Gly445 amino acid residue in BTD. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 9396567; Invitae). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic.

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