ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.96904+1G>A

dbSNP: rs1553517092
Minimum review status: Collection method:
Minimum conflict level:
ClinVar version:
Total submissions: 2
Download table as spreadsheet
Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001377466 SCV001574803 likely pathogenic Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J 2017-04-26 criteria provided, single submitter clinical testing For these reasons, this variant has been classified as Likely Pathogenic. This variant is found in the A-band of this gene. While this particular variant has not been reported in the literature, truncating variants in the A-band of TTN are significantly overrepresented in patients with dilated cardiomyopathy and are considered to be likely pathogenic for the disease (PMID: 25589632). ClinVar contains an entry for this variant (Variation ID: 202384). This sequence change affects a donor splice site in intron 347 of the TTN gene. It is expected to disrupt RNA splicing and likely results in an absent or disrupted protein product.
Ambry Genetics RCV002367860 SCV002664407 uncertain significance Cardiovascular phenotype 2022-06-06 criteria provided, single submitter clinical testing The c.69709+1G>A intronic variant results from a G to A substitution one nucleotide after coding exon 174 of the TTN gene. Exon 174 is located in the A-band region of the N2-B isoform of the titin protein and is constitutively expressed in TTN transcripts (percent spliced in or PSI 100%). This alteration disrupts the canonical splice site and is expected to cause aberrant splicing. However, although direct evidence is unavailable, this alteration is predicted to result in an in-frame transcript that is not expected to trigger nonsense-mediated mRNA decay. The exact functional effect of the predicted splice impact is unknown. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

The information on this website is not intended for direct diagnostic use or medical decision-making without review by a genetics professional. Individuals should not change their health behavior solely on the basis of information contained on this website. Neither the University of Utah nor the National Institutes of Health independently verfies the submitted information. If you have questions about the information contained on this website, please see a health care professional.