ClinVar Miner

Submissions for variant NM_002691.4(POLD1):c.83C>T (p.Ala28Val)

dbSNP: rs765097158
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000537097 SCV000646709 uncertain significance Colorectal cancer, susceptibility to, 10 2023-11-15 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 28 of the POLD1 protein (p.Ala28Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with POLD1-related conditions. ClinVar contains an entry for this variant (Variation ID: 469390). 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 valine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. RNA analysis performed to evaluate the impact of this missense change on mRNA splicing indicates it does not significantly alter splicing (Invitae). 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.
GeneDx RCV001764580 SCV001990290 uncertain significance not provided 2019-07-12 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 that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge
Ambry Genetics RCV002438444 SCV002679800 uncertain significance Hereditary cancer-predisposing syndrome 2022-09-03 criteria provided, single submitter clinical testing The p.A28V variant (also known as c.83C>T), located in coding exon 1 of the POLD1 gene, results from a C to T substitution at nucleotide position 83. The alanine at codon 28 is replaced by valine, an amino acid with similar properties. This amino acid position is conserved. 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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