Is PMS2 p.Ser250= (c.750C>A) pathogenic?

PMS2 p.Ser250= (c.750C>A) is classified Likely benign in PMS2 (ClinVar, Single submitter, 1 submitter; last evaluated 2018-03-08). No allele count reported in gnomAD v4.1 (AN 1,607,038); Associated with hereditary neoplastic syndrome.

What condition is associated with PMS2 p.Ser250= (c.750C>A)?

PMS2 p.Ser250= (c.750C>A) is associated with hereditary neoplastic syndrome (ClinVar).

How common is PMS2 p.Ser250= (c.750C>A) in the general population?

PMS2 p.Ser250= (c.750C>A) is no allele count reported in gnomAD v4.1 (AN 1,607,038) (gnomAD).

PMS2 p.Ser250=

c.750C>A · rs200439295 · VCV1759245

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 1,607,038)

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -6
Overall
CADD	0.095	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

No allele count reported in gnomAD v4.1 (AN 1,607,038). 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: PMS2
Protein: p.Ser250=
Coding: c.750C>A
MANE Select: NM_000535
dbSNP: rs200439295
Type: single nucleotide variant
Location: chr7:5997379 (GRCh38)
Gene constraint: LOEUF 0.898 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 71.37 · 9 PDB
Residue 250: an α-helix

Full PMS2 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

PMS2 p.Ser250Pro Uncertain significance ★★ ⚠ same residue
PMS2 p.Ser250Phe Uncertain significance ★ ⚠ same residue
PMS2 p.Ser250fs Pathogenic ★★ same residue
PMS2 p.Ser250Ala Uncertain significance ★ ⚠ same residue
PMS2 p.Ser250Cys Uncertain significance ★ ⚠ same residue
PMS2 c.163+2T>C Likely pathogenic ★★★ same condition
PMS2 c.164-2A>G Likely pathogenic ★★★ same condition
PMS2 c.2007-1G>A 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/pms2-p-ser250 (accessed [today's date]).

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