rs768504121
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP3
The NM_006231.4(POLE):c.4168C>T(p.Arg1390Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000787 in 1,613,364 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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 1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000723 AC: 11AN: 152176Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000279 AC: 7AN: 250976Hom.: 0 AF XY: 0.0000295 AC XY: 4AN XY: 135596
GnomAD4 exome AF: 0.0000794 AC: 116AN: 1461188Hom.: 0 Cov.: 32 AF XY: 0.0000702 AC XY: 51AN XY: 726786
GnomAD4 genome AF: 0.0000723 AC: 11AN: 152176Hom.: 0 Cov.: 33 AF XY: 0.0000538 AC XY: 4AN XY: 74338
ClinVar
Submissions by phenotype
not provided Uncertain:4
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Observed in an individual with familial colorectal cancer (PMID: 28195393); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 28195393) -
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This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 1390 of the POLE protein (p.Arg1390Cys). This variant is present in population databases (rs768504121, gnomAD 0.006%). This missense change has been observed in individual(s) with colorectal cancer (PMID: 28195393). ClinVar contains an entry for this variant (Variation ID: 246319). 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. -
Colorectal cancer, susceptibility to, 12;C3554576:Facial dysmorphism-immunodeficiency-livedo-short stature syndrome;C5193036:Intrauterine growth retardation, metaphyseal dysplasia, adrenal hypoplasia congenita, genital anomalies, and immunodeficiency Uncertain:2
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POLE-related disorder Uncertain:1
The POLE c.4168C>T variant is predicted to result in the amino acid substitution p.Arg1390Cys. This variant has been reported in an individual with colorectal cancer (Table 3, Hansen et al. 2018. PubMed ID: 28195393). This variant is reported in 0.0054% of alleles in individuals of European (Non-Finnish) descent in gnomAD. This variant is interpreted as uncertain in ClinVar (https://preview.ncbi.nlm.nih.gov/clinvar/variation/246319/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -
Hereditary cancer-predisposing syndrome Uncertain:1
The p.R1390C variant (also known as c.4168C>T), located in coding exon 33 of the POLE gene, results from a C to T substitution at nucleotide position 4168. The arginine at codon 1390 is replaced by cysteine, an amino acid with highly dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. 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