ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.83542dup (p.Ile27848fs)

dbSNP: rs1553568528
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000481609 SCV000572495 pathogenic not provided 2016-12-21 criteria provided, single submitter clinical testing Although the c.78619dupA pathogenic variant in the TTN gene has not been reported to our knowledge, this variant causes a shift in reading frame starting at codon Isoleucine 26207, changing it to an Asparagine, and creating a premature stop codon at position six of the new reading frame, denoted p.I26207NfsX6. This pathogenic variant is located within the A-band of TTN and is expected to result in either an abnormal, truncated protein product or loss of protein from this allele through nonsense-mediated mRNA decay. Many other frameshift variants in the TTN gene have been reported in HGMD in association with DCM (Stenson et al., 2014). Furthermore, the c.78619dupA variant was not observed in either the Exome Aggregation Consortium or approximately 6,000 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. In summary, c.78619dupA in the TTN gene is interpreted as a pathogenic variant.

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