PPP3CA p.Pro226=
c.678T>C · rs749129349 · VCV2006494
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00017%, nfe)
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 0.48 | GERP -5.2, phastCons 0.95 |
| Overall | ||
| CADD | 9.013 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00017%
European (non-Finnish) · 2/1,179,244 alleles
Filtering AF
2.8e-05%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 1.1e-05%
Overall
0.000124%
2/1,612,710 alleles · very rare
exomes 2/1,460,376 · genomes 0/152,334 · joint denominator
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
- PPP3CA
- Protein
- p.Pro226=
- Coding
- c.678T>C
- MANE Select
- NM_000944
- dbSNP
- rs749129349
- Type
- single nucleotide variant
- Location
- chr4:101093880 (GRCh38)
- Gene constraint
- LOEUF 0.243 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 86.24 · 21 PDB
- Residue 226
- the 'catalytic' region; an α-helix
Similar variants
- PPP3CA p.Pro226Ser Uncertain significance ★ ⚠ same residue
- PPP3CA c.1340-2A>G Pathogenic/Likely pathogenic ★★ same type
- PPP3CA p.Ala447Thr Pathogenic/Likely pathogenic ★★ ⚠ same type
- PPP3CA p.Arg254Ser Pathogenic/Likely pathogenic ★★ same type
- PPP3CA p.Asp234Glu Pathogenic/Likely pathogenic ★★ same type
- PPP3CA p.Glu282Lys Pathogenic/Likely pathogenic ★★ same type
- PPP3CA p.Glu456Ter Pathogenic/Likely pathogenic ★★ same type
- PPP3CA p.His92Arg 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/ppp3ca-p-pro226 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown