ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.8220G>A (p.Trp2740Ter)

dbSNP: rs1553995639
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000560362 SCV000643757 uncertain significance Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J 2020-01-24 criteria provided, single submitter clinical testing In summary, although this is a rare truncating variant, truncating variants have been shown to be highly prevalent in the TTN gene in the general population and unaffected individuals (PMID: 26701604, 22335739). Furthermore, this truncation is located outside of a clinically relevant region of the TTN gene (PMID: 25589632). For these reasons it has been classified as a Variant of Uncertain Significance. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a TTN-related disease. This sequence change results in a premature translational stop signal in exon 35 of the TTN mRNA at codon 2740 (p.Trp2740*). While this is not anticipated to result in nonsense mediated decay, it is expected to create a truncated TTN protein.

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