ClinVar Miner

Submissions for variant NM_021830.5(TWNK):c.1712C>T (p.Ala571Val)

dbSNP: rs770025210
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000658220 SCV000779991 uncertain significance not provided 2019-10-10 criteria provided, single submitter clinical testing Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge
Labcorp Genetics (formerly Invitae), Labcorp RCV000658220 SCV005724485 uncertain significance not provided 2024-07-08 criteria provided, single submitter clinical testing This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 571 of the TWNK protein (p.Ala571Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TWNK-related conditions. ClinVar contains an entry for this variant (Variation ID: 546357). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt TWNK protein function with a positive predictive value of 95%. 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.

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