ClinVar Miner

Submissions for variant NM_000553.6(WRN):c.1915G>A (p.Val639Ile)

dbSNP: rs1585449230
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000799442 SCV000939104 uncertain significance Werner syndrome 2022-02-09 criteria provided, single submitter clinical testing This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 639 of the WRN protein (p.Val639Ile). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with WRN-related conditions. ClinVar contains an entry for this variant (Variation ID: 645382). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The isoleucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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 RCV002538023 SCV003745360 uncertain significance Inborn genetic diseases 2022-12-16 criteria provided, single submitter clinical testing The c.1915G>A (p.V639I) alteration is located in exon 17 (coding exon 16) of the WRN gene. This alteration results from a G to A substitution at nucleotide position 1915, causing the valine (V) at amino acid position 639 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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