Is MSH2 p.Ile237Phe (c.709A>T) pathogenic?

MSH2 p.Ile237Phe (c.709A>T) is classified Likely benign in MSH2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-11-17). AlphaMissense: likely benign (0.3058); Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with MSH2 p.Ile237Phe (c.709A>T)?

MSH2 p.Ile237Phe (c.709A>T) is associated with hereditary neoplastic syndrome (ClinVar).

How common is MSH2 p.Ile237Phe (c.709A>T) in the general population?

MSH2 p.Ile237Phe (c.709A>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about MSH2 p.Ile237Phe (c.709A>T)?

AlphaMissense predicts likely benign (score 0.3058) — an in-silico prediction, not a clinical call.

MSH2 p.Ile237Phe

c.709A>T · rs63751307 · VCV3230853

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.3058 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.3058	likely benign
REVEL	0.861	moderately pathogenic-leaning
SaProt	LLR -12.07	damaging
⇒ REVEL and SaProt call this damaging; AlphaMissense does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.2	GERP -0.48, phastCons 1
Regional constraint	o/e 1.30	unconstrained · MANE · 80 kb · p 4.9e-24 · regional, not allelic
Overall
CADD	21.6	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: MSH2
Protein: p.Ile237Phe
Coding: c.709A>T
MANE Select: NM_000251
dbSNP: rs63751307
Type: single nucleotide variant
Location: chr2:47412477 (GRCh38)
Gene constraint: LOEUF 0.672 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 85.60 · 30 PDB
Residue 237: an α-helix

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

Disease context

hereditary neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

MSH2 p.Ile237Ser Uncertain significance ★★ ⚠ same residue
MSH2 p.Ile237= Likely benign ★★ same residue
MSH2 p.Ile237Thr Conflicting classifications of pathogenicity ★ ⚠ same residue
MSH2 p.Ile237Val Conflicting classifications of pathogenicity ★ ⚠ same residue
MSH2 p.Ile237fs Pathogenic ★ same residue
MSH2 c.1076+1G>A Pathogenic ★★★ same condition
MSH2 c.1076+1G>T Likely pathogenic ★★★ same condition
MSH2 c.1077-1G>C 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-ile237phe (accessed [today's date]).

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