ClinVar Miner

Submissions for variant NM_152618.3(BBS12):c.1277G>A (p.Cys426Tyr)

dbSNP: rs886059058
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Illumina Laboratory Services, Illumina RCV000669919 SCV000447418 uncertain significance Bardet-Biedl syndrome 12 2018-01-13 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.
Counsyl RCV000669919 SCV000794719 uncertain significance Bardet-Biedl syndrome 12 2017-10-24 criteria provided, single submitter clinical testing
Invitae RCV001386881 SCV001587278 pathogenic Bardet-Biedl syndrome 2023-09-10 criteria provided, single submitter clinical testing For these reasons, this variant has been classified as Pathogenic. 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 BBS12 protein function. ClinVar contains an entry for this variant (Variation ID: 347502). This missense change has been observed in individual(s) with clinical features of Bardet-Biedl syndrome (PMID: 27659767; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces cysteine, which is neutral and slightly polar, with tyrosine, which is neutral and polar, at codon 426 of the BBS12 protein (p.Cys426Tyr).

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