ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.67636+2T>C

gnomAD frequency: 0.00001  dbSNP: rs1575872984
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego RCV000852820 SCV000995549 likely pathogenic Cardiomyopathy 2022-08-29 criteria provided, single submitter clinical testing
Invitae RCV001858514 SCV002288544 likely pathogenic Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J 2024-01-21 criteria provided, single submitter clinical testing This sequence change affects a donor splice site in intron 319 of the TTN gene. It is expected to disrupt RNA splicing and likely results in a truncated or disrupted TTN protein. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TTN-related conditions. ClinVar contains an entry for this variant (Variation ID: 691742). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. This variant is located in the A band of TTN (PMID: 25589632). Truncating variants in this region are significantly overrepresented in patients affected with dilated cardiomyopathy (PMID: 25589632). Truncating variants in this region have also been reported in individuals affected with autosomal recessive centronuclear myopathy (PMID: 23975875). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic.

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