Is MSH2 p.Val57= (c.171G>T) pathogenic?

MSH2 p.Val57= (c.171G>T) is classified Likely benign in MSH2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-10). No allele count reported in gnomAD v4.1 (AN 1,608,496); Associated with Hereditary nonpolyposis colorectal neoplasms.

What condition is associated with MSH2 p.Val57= (c.171G>T)?

MSH2 p.Val57= (c.171G>T) is associated with Hereditary nonpolyposis colorectal neoplasms (ClinVar).

How common is MSH2 p.Val57= (c.171G>T) in the general population?

MSH2 p.Val57= (c.171G>T) is no allele count reported in gnomAD v4.1 (AN 1,608,496) (gnomAD).

MSH2 p.Val57=

c.171G>T · rs1321481324 · VCV1157927

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,608,496)

Conditions

Hereditary nonpolyposis colorectal neoplasms

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>A here scores Δ0.76 · evaluated, not missing
Constraint at this position
Conservation	phyloP 5.6	GERP 1.6, phastCons 1
Overall
CADD	12.75	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

No allele count reported in gnomAD v4.1 (AN 1,608,496). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: MSH2
Protein: p.Val57=
Coding: c.171G>T
MANE Select: NM_000251
dbSNP: rs1321481324
Type: single nucleotide variant
Location: chr2:47403362 (GRCh38)
Gene constraint: LOEUF 0.672 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 85.60 · 30 PDB
Residue 57: an α-helix

Full MSH2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Hereditary nonpolyposis colorectal neoplasms — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

MSH2 p.Val57Gly Uncertain significance ★★ ⚠ same residue
MSH2 p.Val57Met Conflicting classifications of pathogenicity ★ ⚠ same residue
MSH2 p.Val57fs Pathogenic ★ same residue
MSH2 p.Val57Ala Likely benign ★ ⚠ same residue
MSH2 c.1276+2T>C Pathogenic/Likely pathogenic ★★ same condition
MSH2 c.1277-1G>T Pathogenic/Likely pathogenic ★★ same condition
MSH2 c.1510+1G>T Pathogenic/Likely pathogenic ★★ same condition
MSH2 c.1510+2T>C Pathogenic/Likely pathogenic ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/msh2-p-val57 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown