rs777638541
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_006231.4(POLE):c.775C>T(p.Arg259Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000105 in 1,613,840 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R259H) has been classified as Likely benign.
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: 0.00000657 AC: 1AN: 152122Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000199 AC: 5AN: 251466Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135904
GnomAD4 exome AF: 0.0000109 AC: 16AN: 1461718Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8AN XY: 727186
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152122Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74300
ClinVar
Submissions by phenotype
not provided Uncertain:2
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in an individual with a personal history of cutaneous malignant melanoma (Aoude et al., 2015); This variant is associated with the following publications: (PMID: 29120461, 26251183) -
This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 259 of the POLE protein (p.Arg259Cys). This variant is present in population databases (rs777638541, gnomAD 0.007%). This missense change has been observed in individual(s) with cutaneous malignant melanoma (PMID: 26251183). ClinVar contains an entry for this variant (Variation ID: 371930). 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 POLE 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. -
not specified Uncertain:1
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Colorectal cancer, susceptibility to, 12 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at