Is SMARCC2 p.Pro1122Ser (c.3364C>T) pathogenic?

SMARCC2 p.Pro1122Ser (c.3364C>T) is classified Uncertain significance in SMARCC2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-09-15). AlphaMissense: likely benign (0.0693); Absent from gnomAD v4.1.

How common is SMARCC2 p.Pro1122Ser (c.3364C>T) in the general population?

SMARCC2 p.Pro1122Ser (c.3364C>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about SMARCC2 p.Pro1122Ser (c.3364C>T)?

AlphaMissense predicts likely benign (score 0.0693) — an in-silico prediction, not a clinical call.

SMARCC2 p.Pro1122Ser

c.3364C>T · rs1872432523 · VCV2444575

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0693 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0693	likely benign
REVEL	0.042	moderately benign-leaning
SaProt	LLR -8.58	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.9	GERP 1.7, phastCons 1
Regional constraint	o/e 0.89	unconstrained · MANE · 1,903 bp · p 0.032 · regional, not allelic
Overall
CADD	25.1	PHRED · no single calibrated threshold — expert panels disagree

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

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM P1091S vs ClinVar P1122S) — verify the residue.

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: SMARCC2
Protein: p.Pro1122Ser
Coding: c.3364C>T
MANE Select: NM_001330288
dbSNP: rs1872432523
Type: single nucleotide variant
Location: chr12:56164600 (GRCh38)
Gene constraint: LOEUF 0.167 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 64.89 · 9 PDB
Residue 1122: a UniProt-annotated variant site (in css8)

Full SMARCC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

SMARCC2 c.1311-3C>G Pathogenic/Likely pathogenic ★★ same type
SMARCC2 c.1926+1G>A Pathogenic/Likely pathogenic ★★ same type
SMARCC2 c.1926+1G>T Pathogenic/Likely pathogenic ★★ same type
SMARCC2 c.1926+2T>C Pathogenic/Likely pathogenic ★★ same type
SMARCC2 p.Arg116His Likely pathogenic ★★ same type
SMARCC2 p.Arg192Ter Pathogenic/Likely pathogenic ★★ same type
SMARCC2 p.Arg269Ter Pathogenic/Likely pathogenic ★★ same type
SMARCC2 p.Arg474Ter Pathogenic/Likely pathogenic ★★ same type

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/smarcc2-p-pro1122ser (accessed [today's date]).

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