ClinVar Miner

Submissions for variant NM_001035.3(RYR2):c.273+18G>A

gnomAD frequency: 0.00041  dbSNP: rs371912039
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000443288 SCV000514429 benign not specified 2015-04-29 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 RCV000443288 SCV001432068 benign not specified 2020-08-31 criteria provided, single submitter clinical testing Variant summary: RYR2 c.273+18G>A 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 8.2e-05 in 280550 control chromosomes, predominantly at a frequency of 0.0007 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 20 fold of the estimated maximal expected allele frequency for a pathogenic variant in RYR2 causing Catecholaminergic Polymorphic Ventricular Tachycardia phenotype (3.4e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. To our knowledge, no occurrence of c.273+18G>A in individuals affected with Catecholaminergic Polymorphic Ventricular Tachycardia and no experimental evidence demonstrating its impact on protein function have been reported. One ClinVar submitter (evaluation after 2014) cites the variant as benign. Based on the evidence outlined above, the variant was classified as benign.
Invitae RCV002524790 SCV002387659 likely benign Catecholaminergic polymorphic ventricular tachycardia 1 2023-12-04 criteria provided, single submitter clinical testing

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