ACTG1 p.Val287=
c.861G>A · rs558300445 · VCV730467
Benign/Likely benign
Multiple submitters
Classification
Benign/Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 3 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0802%, eas)
Conditions
2
Baraitser-winter syndrome 2
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 -5.9 | GERP -3.8 |
| Overall | ||
| CADD | 4.511 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0802%
East Asian · 36/44,890 alleles
Filtering AF
0.0594%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0524%
Overall
0.0026%
42/1,614,060 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.0802% | 1,247 |
| Remaining individualsnot grpmax-eligible | 0.0048% | 20,836 |
| Admixed American | 0.00333% | 30,013 |
| European (non-Finnish) | 8.47e-05% | 1,180,038 |
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
- ACTG1
- Protein
- p.Val287=
- Coding
- c.861G>A
- MANE Select
- NM_001614
- dbSNP
- rs558300445
- Type
- single nucleotide variant
- Location
- chr17:81511050 (GRCh38)
- Gene constraint
- LOEUF 0.617 · pLI 0.46 (gnomAD)
- Structure
- AlphaFold pLDDT 95.44 · 11 PDB
- Residue 287
- a turn
Similar variants
- ACTG1 p.Val287Met Uncertain significance ★★ ⚠ same residue
- ACTG1 p.Ala135Val Pathogenic/Likely pathogenic ★★ same condition
- ACTG1 p.Ala204Gly Likely pathogenic ★★ same condition
- ACTG1 p.Arg183Gln Pathogenic/Likely pathogenic ★★ same condition
- ACTG1 p.Arg183Trp Pathogenic/Likely pathogenic ★★ same condition
- ACTG1 p.Arg206Gln Pathogenic/Likely pathogenic ★★ same condition
- ACTG1 p.Arg210Cys Pathogenic ★★ same condition
- ACTG1 p.Arg254Trp Pathogenic/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/actg1-p-val287 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown