ACVR1 p.Phe133=
c.399C>T · rs140233340 · VCV2720880
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00458%, 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 -3.9 | GERP -5.3 |
| Overall | ||
| CADD | 2.001 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00458%
European (non-Finnish) · 54/1,179,976 alleles
Filtering AF
0.00358%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00321%
Overall
0.0039%
63/1,613,876 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| European (non-Finnish)grpmax | 0.00458% | 21,851 |
| South Asian | 0.00439% | 22,764 |
| Admixed American | 0.00333% | 29,995 |
| Remaining individualsnot grpmax-eligible | 0.0032% | 31,242 |
| African / African-American | 0.00134% | 74,868 |
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
- ACVR1
- Protein
- p.Phe133=
- Coding
- c.399C>T
- MANE Select
- NM_001111067
- dbSNP
- rs140233340
- Type
- single nucleotide variant
- Location
- chr2:157778275 (GRCh38)
- Gene constraint
- LOEUF 0.835 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 83.70 · 85 PDB
Similar variants
- ACVR1 p.Arg206His Pathogenic ★★ same type
- ACVR1 p.Gly328Glu Pathogenic/Likely pathogenic ★★ same type
- ACVR1 p.Gly356Asp Pathogenic/Likely pathogenic ★★ same type
- ACVR1 p.Ala134Thr Uncertain significance ★★ ⚠ same type
- ACVR1 p.Arg147Gln Uncertain significance ★★ ⚠ same type
- ACVR1 p.Arg160Ter Uncertain significance ★★ same type
- ACVR1 p.Arg307Gln Uncertain significance ★★ ⚠ same type
- ACVR1 p.Arg417Gln Uncertain significance ★★ ⚠ 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/acvr1-p-phe133 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown