ClinVar Miner

Submissions for variant NM_001148.6(ANK2):c.8324A>G (p.His2775Arg)

gnomAD frequency: 0.00006  dbSNP: rs534934297
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Department Of Translational Genomics (developmental Genetics Section), King Faisal Specialist Hospital & Research Centre RCV000171381 SCV000221578 uncertain significance not provided 2024-02-14 criteria provided, single submitter research reclassified to VUS based on updated frequency (PMID: 31130284)
Invitae RCV001087082 SCV000627676 likely benign Long QT syndrome 2023-12-11 criteria provided, single submitter clinical testing
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV001194187 SCV001363528 likely benign not specified 2023-02-06 criteria provided, single submitter clinical testing Variant summary: ANK2 c.8324A>G (p.His2775Arg) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 7.6e-05 in 249628 control chromosomes, predominantly at a frequency of 0.00093 within the East Asian subpopulation in the gnomAD database. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 93 fold of the estimated maximal expected allele frequency for a pathogenic variant in ANK2 causing Arrhythmia phenotype (1e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of East Asian origin. c.8324A>G has been reported in the literature in a setting of whole exome sequencing in one individual affected with tachycardia, without strong evidence for causality (Luo_2020). This report does not provide unequivocal conclusions about association of the variant with Arrhythmia. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and all classified the variant as likely benign. Based on the evidence outlined above, the variant was classified as likely benign.
GeneDx RCV000171381 SCV001767510 likely benign not provided 2019-11-14 criteria provided, single submitter clinical testing
Ambry Genetics RCV002426815 SCV002677134 likely benign Cardiovascular phenotype 2020-12-24 criteria provided, single submitter clinical testing This alteration is classified as likely benign based on a combination of the following: population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

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