ClinVar Miner

Submissions for variant NM_003098.3(SNTA1):c.311-20C>T

gnomAD frequency: 0.00013  dbSNP: rs200764326
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000828080 SCV000969759 likely benign not provided 2018-06-01 criteria provided, single submitter clinical testing This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV001255485 SCV001431907 benign not specified 2020-08-17 criteria provided, single submitter clinical testing Variant summary: SNTA1 c.311-20C>T alters a non-conserved nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. 4/4 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00021 in 251324 control chromosomes (gnomAD). The observed variant frequency is approximately 60-fold of the estimated maximal expected allele frequency for a pathogenic variant in SNTA1 causing Long QT Syndrome phenotype (3.3e-06), strongly suggesting that the variant is benign. To our knowledge, no occurrence of c.311-20C>T in individuals affected with Long QT Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation, and classified the variant as likely benign. Based on the evidence outlined above, the variant was classified as benign.
Labcorp Genetics (formerly Invitae), Labcorp RCV002067473 SCV002403784 benign Long QT syndrome 2024-01-18 criteria provided, single submitter clinical testing

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