rs786201698

chr2-47403011-G-Achr2-47403011-G-Cchr2-47403011-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The variant allele was found at a frequency of 0.0000683 in 687,918 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:
  • Genomes: 𝑓 0.000039 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000077 (1 hom.)
• Consequence: Unknown
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:6
• Conservation: PhyloP100: 0.505

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.6).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt

Frequencies

GnomAD3 genomes AF: 0.0000394 AC: 6 AN: 152262 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.000962

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000766 AC: 41 AN: 535538 Hom.: 1 Cov.: 6 AF XY: 0.0000595 AC XY: 17 AN XY: 285908

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.0000559

Gnomad4 EAS exome AF: 0.00123

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000340

GnomAD4 genome AF: 0.0000394 AC: 6 AN: 152380 Hom.: 0 Cov.: 33 AF XY: 0.0000403 AC XY: 3 AN XY: 74514

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.000964

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000302

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

MSH2-related disorder Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 05, 2024

The MSH2 c.-181G>A variant is located in the 5' untranslated region. This variant has been reported in a patient with sporadic early onset colorectal cancer and was found to decrease transcriptional efficiency (reported 77% decrease) (Shin et al. 2002. PubMed ID: 11782355). This variant is reported in 0.13% of alleles in individuals of East Asian descent in gnomAD and is listed in ClinVar as a variant of uncertain significance (https://www.ncbi.nlm.nih.gov/clinvar/variation/184792/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Lynch syndrome 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Feb 23, 2016

- -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 12, 2023

Observed in individuals with early-onset colorectal cancer showing microsatellite instability (Shin et al., 2002); Published functional studies are inconclusive: showed significantly decreased promoter activity compared to wild-type in a luciferase assay, but did not affect DNA binding activity of nuclear factors (Shin et al., 2002); Nucleotide substitution is not conserved across species; Also known as c.-190G>A; This variant is associated with the following publications: (PMID: 11782355, 36577833) -

Hereditary nonpolyposis colorectal neoplasms Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

May 27, 2022

This variant occurs in a non-coding region of the MSH2 gene. It does not change the encoded amino acid sequence of the MSH2 protein. This variant is present in population databases (rs786201698, gnomAD 0.1%). This variant has been observed in individual(s) with colorectal cancer (PMID: 11782355). This variant is also known as -190G>A. Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on MSH2 function (PMID: 11782355). 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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 11, 2018

The c.-181G>A alteration is located in the 5' untranslated region (5'UTR) of the MSH2 gene. This alteration consists of a G to A substitution nucleotides upstream from the first translated codon. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Muir-Torré syndrome;C2936783:Lynch syndrome 1;C5436806:Mismatch repair cancer syndrome 2 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Mar 20, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.60
Cadd	Benign	12
Dann	Benign	0.91

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs786201698; hg19: chr2-47630150;