ACTB p.Lys328=
c.984G>A · rs754862802 · VCV1518951
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00133%, afr)
Conditions
1
Baraitser-Winter syndrome 1
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | all four deltas below 0.2 · C>G here scores Δ0.37 · evaluated, not missing |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 7.3 | GERP 1.8, phastCons 1 |
| Overall | ||
| CADD | 22.2 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00133%
African / African-American · 1/74,930 alleles
Filtering AF
0.000429%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000312%
Overall
0.000682%
11/1,614,042 alleles · very rare
exomes 8/1,461,858 · genomes 3/152,184 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.00133% | 74,930 |
| European (non-Finnish) | 0.000847% | 118,003 |
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
- ACTB
- Protein
- p.Lys328=
- Coding
- c.984G>A
- MANE Select
- NM_001101
- dbSNP
- rs754862802
- Type
- single nucleotide variant
- Location
- chr7:5528004 (GRCh38)
- Gene constraint
- LOEUF 0.193 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
- Structure
- AlphaFold pLDDT 95.31 · 93 PDB
Similar variants
- ACTB p.Ala22Thr Likely pathogenic ★★ same condition
- ACTB p.Ala7Thr Likely pathogenic ★★ same condition
- ACTB p.Arg147Cys Pathogenic ★★ same condition
- ACTB p.Arg183Trp Pathogenic ★★ same condition
- ACTB p.Arg196Cys Pathogenic ★★ same condition
- ACTB p.Arg196His Pathogenic ★★ same condition
- ACTB p.Arg196Leu Likely pathogenic ★★ same condition
- ACTB p.Arg206Gln 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/actb-p-lys328 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown