Is SGMS2 p.Ser213Pro (c.637T>C) pathogenic?

SGMS2 p.Ser213Pro (c.637T>C) is classified Uncertain significance in SGMS2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-05-30). AlphaMissense: likely pathogenic (0.8869); Very rare (popmax 0.00333%, amr).

How common is SGMS2 p.Ser213Pro (c.637T>C) in the general population?

SGMS2 p.Ser213Pro (c.637T>C) is very rare (popmax 0.00333%, amr) (gnomAD).

What do computational predictors say about SGMS2 p.Ser213Pro (c.637T>C)?

AlphaMissense predicts likely pathogenic (score 0.8869) — an in-silico prediction, not a clinical call.

SGMS2 p.Ser213Pro

c.637T>C · rs1207266132 · VCV2879002

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.8869 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00333%, amr)

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.8869	likely pathogenic
REVEL	0.466	indeterminate
SaProt	LLR -10.96	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP 7.8	GERP 2.9, phastCons 1
Regional constraint	o/e 0.87	unconstrained · MANE · 15 kb · p 0.0049 · regional, not allelic
Overall
CADD	28.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00333% Admixed American · 2/60,004 alleles

Filtering AF 0.000553% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000207%

Overall 0.000547% 8/1,461,742 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00333%	30,002
European (non-Finnish)	0.000509%	196,655

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: SGMS2
Protein: p.Ser213Pro
Coding: c.637T>C
MANE Select: NM_001375905
dbSNP: rs1207266132
Type: single nucleotide variant
Location: chr4:107903296 (GRCh38)

Full SGMS2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

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/sgms2-p-ser213pro (accessed [today's date]).

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