ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.15659A>G (p.Asn5220Ser) (rs565670799)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000839286 SCV000981181 likely benign not provided 2018-04-16 criteria provided, single submitter clinical testing This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.
Department of Pathology and Laboratory Medicine,Sinai Health System RCV000839286 SCV001552301 uncertain significance not provided no assertion criteria provided clinical testing The TTN p.N5220S variant was not identified in the literature nor was it identified in Cosmic or LOVD 3.0. The variant was identified in dbSNP (ID: rs565670799) and in ClinVar (classified as likely benign by GeneDx). The variant was identified in control databases in 9 of 280324 chromosomes at a frequency of 0.00003211 (Genome Aggregation Database March 6, 2019, v2.1.1). The variant was observed in the following populations: South Asian in 8 of 30600 chromosomes (freq: 0.000261) and European (non-Finnish) in 1 of 128132 chromosomes (freq: 0.000008), but was not observed in the African, Latino, Ashkenazi Jewish, East Asian, European (Finnish), or Other populations. The p.Asn5220 residue has limited species conservation data and computational analyses (BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and two of four in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) predict a greater than 10% difference in splicing; this is not very predictive of pathogenicity. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance.

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