ClinVar Miner

Submissions for variant NM_001276345.2(TNNT2):c.41+16A>G

gnomAD frequency: 0.00029  dbSNP: rs370729174
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Eurofins Ntd Llc (ga) RCV000168958 SCV000111198 uncertain significance not provided 2013-03-12 criteria provided, single submitter clinical testing
GeneDx RCV000168958 SCV000970409 likely benign not provided 2018-04-23 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.
Invitae RCV002055113 SCV002383669 benign Hypertrophic cardiomyopathy 2; Dilated cardiomyopathy 1D; Cardiomyopathy, familial restrictive, 3 2024-01-31 criteria provided, single submitter clinical testing
PreventionGenetics, part of Exact Sciences RCV004537322 SCV004717315 likely benign TNNT2-related disorder 2021-04-17 criteria provided, single submitter clinical testing This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV003993794 SCV004813710 benign not specified 2024-02-27 criteria provided, single submitter clinical testing Variant summary: TNNT2 c.41+16A>G alters a non-conserved nucleotide located at a position not widely known to affect splicing. Consensus agreement among computation 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 8.7e-05 in 251454 control chromosomes, predominantly at a frequency of 0.0012 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 4.8 fold of the estimated maximal expected allele frequency for a pathogenic variant in TNNT2 causing Hypertrophic Cardiomyopathy phenotype (0.00025), 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.41+16A>G in individuals affected with Hypertrophic Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 93442). Based on the evidence outlined above, the variant was classified as benign.

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