ACO2 p.Arg656=
c.1968G>A · rs377371545 · VCV1671587
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.012%, afr)
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 1.9 | GERP 0.46, phastCons 1 |
| Overall | ||
| CADD | 7.557 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.012%
African / African-American · 9/74,930 alleles
Filtering AF
0.00623%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00467%
Overall
0.00062%
10/1,614,076 alleles · ultra-rare
exomes 5/1,461,864 · genomes 5/152,212 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.012% | 8,326 |
| European (non-Finnish) | 8.47e-05% | 1,180,025 |
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
- ACO2
- Protein
- p.Arg656=
- Coding
- c.1968G>A
- MANE Select
- NM_001098
- dbSNP
- rs377371545
- Type
- single nucleotide variant
- Location
- chr22:41527302 (GRCh38)
- Gene constraint
- LOEUF 0.489 · pLI 0.98 (gnomAD)
- Structure
- AlphaFold pLDDT 95.44
Similar variants
- ACO2 p.Arg656Ser Uncertain significance ★ ⚠ same residue
- ACO2 p.Arg656Thr Uncertain significance ★ ⚠ same residue
- ACO2 p.Arg656fs Pathogenic ★ same residue
- ACO2 p.Arg378Ter Pathogenic/Likely pathogenic ★★ same type
- ACO2 p.Arg58Ter Pathogenic/Likely pathogenic ★★ same type
- ACO2 p.Arg84Ter Pathogenic ★★ same type
- ACO2 p.Glu464Ter Pathogenic/Likely pathogenic ★★ same type
- ACO2 p.Gly503Ter 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/aco2-p-arg656 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown