rs371612922
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2
The NM_002691.4(POLD1):c.934G>A(p.Val312Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000188 in 1,598,924 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_002691.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
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POLD1 | NM_002691.4 | c.934G>A | p.Val312Met | missense_variant | Exon 8 of 27 | ENST00000440232.7 | NP_002682.2 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000460 AC: 7AN: 152246Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000327 AC: 8AN: 244382Hom.: 0 AF XY: 0.0000452 AC XY: 6AN XY: 132766
GnomAD4 exome AF: 0.0000159 AC: 23AN: 1446678Hom.: 0 Cov.: 34 AF XY: 0.0000167 AC XY: 12AN XY: 716798
GnomAD4 genome AF: 0.0000460 AC: 7AN: 152246Hom.: 0 Cov.: 33 AF XY: 0.0000538 AC XY: 4AN XY: 74372
ClinVar
Submissions by phenotype
not provided Uncertain:3
The POLD1 c.934G>A (p.Val312Met) variant has been reported in the published literature as one of several germline variants in an individual with colorectal cancer (PMIDs: 31769227 (2020)) and in an individual with obsessive-compulsive disorder (PMID: 34183866 (2021)). The frequency of this variant in the general population, 0.000056 (7/125888 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded conflicting predictions that this variant is benign or damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -
In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 21157497, 34183866, 20951805) -
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Colorectal cancer, susceptibility to, 10 Uncertain:2
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This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 312 of the POLD1 protein (p.Val312Met). This variant is present in population databases (rs371612922, gnomAD 0.009%). 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: 246387). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt POLD1 protein function with a negative predictive value of 80%. 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. -
Hereditary cancer-predisposing syndrome Uncertain:2
The p.V312M variant (also known as c.934G>A), located in coding exon 7 of the POLD1 gene, results from a G to A substitution at nucleotide position 934. The valine at codon 312 is replaced by methionine, an amino acid with highly similar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -
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Colorectal cancer, susceptibility to, 10;C3715192:Mandibular hypoplasia-deafness-progeroid syndrome;C5935622:Immunodeficiency 120 Uncertain:1
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Mandibular hypoplasia-deafness-progeroid syndrome;CN280943:Familial colorectal cancer Other:1
Variant interpreted as Uncertain significance and reported on 07-28-2020 by Lab Invitae. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at