Total submissions: 3
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Gene |
RCV000184946 | SCV000237714 | uncertain significance | not specified | 2013-01-11 | criteria provided, single submitter | 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 DCM panel(s). |
Invitae | RCV000551750 | SCV000643862 | uncertain significance | Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J | 2017-05-26 | criteria provided, single submitter | clinical testing | |
Ambry Genetics | RCV002354518 | SCV002655017 | uncertain significance | Cardiovascular phenotype | 2020-08-13 | criteria provided, single submitter | clinical testing | The p.T20626N variant (also known as c.61877C>A), located in coding exon 160 of the TTN gene, results from a C to A substitution at nucleotide position 61877. The threonine at codon 20626 is replaced by asparagine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. |