ACTB c.984+3G>A
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00133%, afr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| Splice region | donor +3 | donor splice region (+3, within the first 6 intronic nt) · inside the BP7-excluded zone |
|---|---|---|
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 0.95 | GERP 1.8, phastCons 0.98 |
| Overall | ||
| CADD | 14.95 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00133%
African / African-American · 1/75,036 alleles
Overall
6.85e-05%
1/1,460,874 alleles · very rare
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
- Coding
- c.984+3G>A
- MANE Select
- NM_001101
- dbSNP
- rs878971183
- Type
- single nucleotide variant
- Location
- chr7:5528001 (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 type
- ACTB p.Ala7Thr Likely pathogenic ★★ same type
- ACTB p.Arg147Cys Pathogenic ★★ same type
- ACTB p.Arg183Trp Pathogenic ★★ same type
- ACTB p.Arg196Cys Pathogenic ★★ same type
- ACTB p.Arg196His Pathogenic ★★ same type
- ACTB p.Arg196Leu Likely pathogenic ★★ same type
- ACTB p.Arg206Gln 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/actb-c-984-plus-3g-a (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown