rs138391248
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_006231.4(POLE):c.2963C>T(p.Ser988Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000211 in 1,613,902 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_006231.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 151944Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000437 AC: 11AN: 251474Hom.: 0 AF XY: 0.0000515 AC XY: 7AN XY: 135912
GnomAD4 exome AF: 0.0000212 AC: 31AN: 1461840Hom.: 0 Cov.: 31 AF XY: 0.0000193 AC XY: 14AN XY: 727228
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152062Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74330
ClinVar
Submissions by phenotype
not provided Uncertain:3
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 988 of the POLE protein (p.Ser988Leu). This variant is present in population databases (rs138391248, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with POLE-related conditions. ClinVar contains an entry for this variant (Variation ID: 405581). 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 expected to disrupt POLE protein function with a positive 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. -
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Colorectal cancer, susceptibility to, 12 Uncertain:1
ACMG classification criteria: PM2 supporting -
Hereditary cancer-predisposing syndrome Uncertain:1
The p.S988L variant (also known as c.2963C>T), located in coding exon 25 of the POLE gene, results from a C to T substitution at nucleotide position 2963. The serine at codon 988 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is highly 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at