ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.104024G>A (p.Arg34675Lys)

dbSNP: rs765125364
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000548985 SCV000642550 uncertain significance Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J 2022-10-25 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with lysine, which is basic and polar, at codon 34675 of the TTN protein (p.Arg34675Lys). This variant is present in population databases (no rsID available, gnomAD 0.02%). This missense change has been observed in individual(s) with clinical features of TTN-related conditions (PMID: 29750433). This variant is also known as c.96320G>A (p.R32107K). ClinVar contains an entry for this variant (Variation ID: 466724). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. This variant is located in the M band of TTN (PMID: 25589632). Variants in this region may be relevant for neuromuscular disorders, but have not been definitively shown to cause cardiomyopathy (PMID: 23975875). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Ambry Genetics RCV002404461 SCV002674224 uncertain significance Cardiovascular phenotype 2019-07-27 criteria provided, single submitter clinical testing The p.R25610K variant (also known as c.76829G>A), located in coding exon 185 of the TTN gene, results from a G to A substitution at nucleotide position 76829. The arginine at codon 25610 is replaced by lysine, an amino acid with highly similar properties. This amino acid position is well 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.

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