ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.52199A>C (p.Glu17400Ala)

gnomAD frequency: 0.00006  dbSNP: rs773027240
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine RCV000218291 SCV000272678 uncertain significance not specified 2018-01-17 criteria provided, single submitter clinical testing proposed classification - variant undergoing re-assessment, contact laboratory
Invitae RCV000542859 SCV000643318 uncertain significance Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J 2017-11-22 criteria provided, single submitter clinical testing
GeneDx RCV000834516 SCV000976285 likely benign not provided 2018-04-13 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.
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories RCV000834516 SCV001472258 uncertain significance not provided 2019-10-07 criteria provided, single submitter clinical testing The TTN c.52199A>C; p.Glu17400Ala variant (rs773027240; ClinVar Variation ID: 229454) is rare in the general population (<1% allele frequency in the Genome Aggregation Database) and has not been reported in the medical literature in association with dilated cardiomyopathy (DCM) or other TTN-related disease. The clinical relevance of rare missense variants in this gene, which are identified on average once per individual sequenced in affected populations (Herman 2012), is not well understood. Yet, evidence suggests that the vast majority of such missense variants do not contribute to the clinical outcome of DCM (Begay 2015). Thus, the clinical significance of the p.Glu17400Ala variant cannot be determined with certainty.
Ambry Genetics RCV002429074 SCV002741905 uncertain significance Cardiovascular phenotype 2018-11-30 criteria provided, single submitter clinical testing The p.E8335A variant (also known as c.25004A>C), located in coding exon 101 of the TTN gene, results from an A to C substitution at nucleotide position 25004. The glutamic acid at codon 8335 is replaced by alanine, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

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