12-132642722-C-T
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_006231.4(POLE):c.4736G>A(p.Arg1579His) variant causes a missense change. The variant allele was found at a frequency of 0.000176 in 1,613,352 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign 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 Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000657 AC: 10AN: 152182Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000678 AC: 17AN: 250804Hom.: 1 AF XY: 0.000103 AC XY: 14AN XY: 135716
GnomAD4 exome AF: 0.000188 AC: 274AN: 1461170Hom.: 1 Cov.: 34 AF XY: 0.000184 AC XY: 134AN XY: 726784
GnomAD4 genome AF: 0.0000657 AC: 10AN: 152182Hom.: 0 Cov.: 33 AF XY: 0.0000672 AC XY: 5AN XY: 74354
ClinVar
Submissions by phenotype
not provided Uncertain:4
This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 1579 of the POLE protein (p.Arg1579His). This variant is present in population databases (rs375590443, gnomAD 0.02%). 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: 240539). 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. -
In silico analysis indicates that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
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POLE-related disorder Uncertain:1
The POLE c.4736G>A variant is predicted to result in the amino acid substitution p.Arg1579His. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.016% of alleles in individuals of South Asian descent in gnomAD (http://gnomad.broadinstitute.org/variant/12-133219308-C-T). This change has been documented as a variant of uncertain significance by multiple labs in the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/variation/240539/evidence/). 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 c.4736G>A (p.R1579H) alteration is located in exon 37 (coding exon 37) of the POLE gene. This alteration results from a G to A substitution at nucleotide position 4736, causing the arginine (R) at amino acid position 1579 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
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:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at