rs63750770
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 4P and 1B. PM1PM2BP4
The NM_000535.7(PMS2):c.1733G>T(p.Arg578Leu) 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. 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. R578H) has been classified as Likely benign.
Frequency
Consequence
NM_000535.7 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 3 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PMS2 | NM_000535.7 | c.1733G>T | p.Arg578Leu | missense_variant | 11/15 | ENST00000265849.12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PMS2 | ENST00000265849.12 | c.1733G>T | p.Arg578Leu | missense_variant | 11/15 | 1 | NM_000535.7 | P3 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 32
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Apr 19, 2023 | The p.R578L variant (also known as c.1733G>T), located in coding exon 11 of the PMS2 gene, results from a G to T substitution at nucleotide position 1733. The arginine at codon 578 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Jun 06, 2019 | - - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Oct 11, 2016 | This variant is denoted PMS2 c.1733G>T at the cDNA level, p.Arg578Leu (R578L) at the protein level, and results in the change of an Arginine to a Leucine (CGT>CTT). This variant has not, to our knowledge, been reported as a germline pathogenic or benign variant; however, it has been reported by Balogh et al. (2006) as a somatic variant observed in breast tumors. PMS2 Arg578Leu was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, suggesting it is not a common benign variant in these populations. Since Arginine and Leucine differ in polarity, charge, size or other properties, this is considered a non-conservative amino acid substitution. PMS2 Arg578Leu occurs at a position that is not conserved and is not located in a known functional domain (Guarne 2001, Fukui 2011). In silico analyses predict that this variant is probably damaging to protein structure and function. Based on currently available evidence, it is unclear whether PMS2 Arg578Leu is a pathogenic or benign variant. We consider it to be a variant of uncertain significance. - |
Hereditary nonpolyposis colorectal neoplasms Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Aug 30, 2021 | This sequence change replaces arginine with leucine at codon 578 of the PMS2 protein (p.Arg578Leu). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and leucine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with PMS2-related conditions. ClinVar contains an entry for this variant (Variation ID: 421090). 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. 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. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at