rs1241114520
Variant summary
Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_006231.4(POLE):c.46G>C(p.Asp16His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. 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. D16A) has been classified as Uncertain significance.
Frequency
Consequence
NM_006231.4 missense
Scores
Clinical Significance
Conservation
Publications
- POLE-related polyposis and colorectal cancer syndromeInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- colorectal cancer, susceptibility to, 12Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
- facial dysmorphism-immunodeficiency-livedo-short stature syndromeInheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
- intrauterine growth retardation, metaphyseal dysplasia, adrenal hypoplasia congenita, genital anomalies, and immunodeficiencyInheritance: AR Classification: STRONG Submitted by: G2P
- IMAGe syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Polymerase proofreading-related adenomatous polyposisInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 0 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| POLE | NM_006231.4 | c.46G>C | p.Asp16His | missense_variant | Exon 1 of 49 | ENST00000320574.10 | NP_006222.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| POLE | ENST00000320574.10 | c.46G>C | p.Asp16His | missense_variant | Exon 1 of 49 | 1 | NM_006231.4 | ENSP00000322570.5 |
Frequencies
GnomAD3 genomes AF: 0.00000660 AC: 1AN: 151496Hom.: 0 Cov.: 33 show subpopulations
GnomAD4 exome Cov.: 32
GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000660 AC: 1AN: 151496Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 73974 show subpopulations
ClinVar
Submissions by phenotype
not provided Uncertain:1
This sequence change replaces aspartic acid with histidine at codon 16 of the POLE protein (p.Asp16His). The aspartic acid residue is weakly conserved and there is a moderate physicochemical difference between aspartic acid and histidine. While this variant is not present in population databases, the frequency information is unreliable, as metrics indicate poor data quality at this position in the ExAC database. This variant has not been reported in the literature in individuals with POLE-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. 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:1
The p.D16H variant (also known as c.46G>C), located in coding exon 1 of the POLE gene, results from a G to C substitution at nucleotide position 46. The aspartic acid at codon 16 is replaced by histidine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated 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