Total submissions: 9
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Invitae | RCV000461663 | SCV000542652 | uncertain significance | Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J | 2017-11-17 | criteria provided, single submitter | clinical testing | |
Eurofins Ntd Llc |
RCV000184906 | SCV000701307 | uncertain significance | not provided | 2018-08-16 | criteria provided, single submitter | clinical testing | |
Athena Diagnostics | RCV000184906 | SCV001475041 | uncertain significance | not provided | 2020-03-03 | criteria provided, single submitter | clinical testing | |
Mayo Clinic Laboratories, |
RCV000184906 | SCV001714632 | uncertain significance | not provided | 2021-03-04 | criteria provided, single submitter | clinical testing | |
Women's Health and Genetics/Laboratory Corporation of America, |
RCV002298512 | SCV002598999 | uncertain significance | not specified | 2022-09-20 | criteria provided, single submitter | clinical testing | Variant summary: TTN c.77411G>A (p.Gly25804Glu) results in a non-conservative amino acid change located in the A-band region of the encoded protein sequence. Four of four in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00014 in 248502 control chromosomes (gnomAD). This frequency is not higher than expected for a pathogenic variant in TTN causing Cardiomyopathy (0.00014 vs 0.00063), allowing no conclusion about variant significance. c.77411G>A has been reported in the literature in an individual affected with Preeclampsia (Gammill_2018). These report(s) do not provide unequivocal conclusions about association of the variant with Cardiomyopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four ClinVar submitters (evaluation after 2014) cite the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. |
Ambry Genetics | RCV002354506 | SCV002651955 | likely benign | Cardiovascular phenotype | 2022-10-17 | criteria provided, single submitter | clinical testing | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. |
Fulgent Genetics, |
RCV002500561 | SCV002814098 | uncertain significance | Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J; Tibial muscular dystrophy; Myopathy, myofibrillar, 9, with early respiratory failure; Early-onset myopathy with fatal cardiomyopathy; Hypertrophic cardiomyopathy 9 | 2021-09-22 | criteria provided, single submitter | clinical testing | |
Revvity Omics, |
RCV000184906 | SCV003826669 | uncertain significance | not provided | 2020-12-22 | criteria provided, single submitter | clinical testing | |
Gene |
RCV000184906 | SCV000237662 | not provided | not provided | 2014-01-22 | no assertion provided | clinical testing | Missense variants in the TTN gene are considered 'unclassified' if they are not previously reported in the literature and do not have >1% frequency in the population to be considered a polymorphism. Research indicates that truncating mutations in the TTN gene are expected to account for approximately 25% of familial and 18% of sporadic idiopathic DCM; however, truncating variants in the TTN gene have been reported in approximately 3% of reported control alleles. There has been little investigation into non-truncating variants. (Herman D et al. Truncations of titin causing dilated cardiomyopathy. N Eng J Med 366:619-628, 2012) The variant is found in CARDIOMYOPATHY panel(s). |