ACACA p.Arg393His
c.1178G>A · rs187880919 · VCV3020903
Computational evidence
| Protein change | ||
| AlphaMissense | 0.7029 | likely pathogenic |
|---|---|---|
| REVEL | 0.888 | moderately pathogenic-leaning |
| SaProt | LLR -12.00 | damaging |
| ⇒ AlphaMissense, REVEL and SaProt all call this damaging. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 7.7 | GERP 2, phastCons 1 |
| Regional constraint | o/e 0.44 | unconstrained · MANE · 15 kb · p 3.3e-14 · regional, not allelic |
| Overall | ||
| CADD | 26.6 | PHRED · no single calibrated threshold — expert panels disagree |
ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification
AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.
⚠ Isoform check: AlphaMissense numbered on a different transcript (AM R356H vs ClinVar R393H) — verify the residue.
Population frequency
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Remaining individualsnot grpmax-eligible | 0.0512% | 1,953 |
| Finnishnot grpmax-eligible | 0.0422% | 2,367 |
| European (non-Finnish)grpmax | 0.0203% | 4,937 |
| African / African-American | 0.00936% | 10,689 |
| South Asian | 0.0011% | 91,064 |
Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.
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
- ACACA
- Protein
- p.Arg393His
- Coding
- c.1178G>A
- MANE Select
- NM_198834
- dbSNP
- rs187880919
- Type
- single nucleotide variant
- Location
- chr17:37263836 (GRCh38)
- Gene constraint
- LOEUF 0.374 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 83.05 · 10 PDB
- Residue 356 UniProt numbering
- the biotin carboxylation domain; a β-strand; the atp-grasp domain
Similar variants
- ACACA p.Ala2308Val Uncertain significance ★★ ⚠ same type
- ACACA p.Arg1206His Uncertain significance ★★ ⚠ same type
- ACACA p.Arg2198Gln Uncertain significance ★★ ⚠ same type
- ACACA p.Arg745Trp Uncertain significance ★★ ⚠ same type
- ACACA p.Asn1903Ser Uncertain significance ★★ ⚠ same type
- ACACA p.Asn728Ser Uncertain significance ★★ ⚠ same type
- ACACA p.Asn950Ser Uncertain significance ★★ ⚠ same type
- ACACA p.Asp2228Asn 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/acaca-p-arg393his (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown