APC2 p.Ala840=
c.2520G>A · VCV3716229
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0569%, eas)
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 -7 | GERP -2.1 |
| Overall | ||
| CADD | 1.002 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0569%
East Asian · 25/43,970 alleles
Filtering AF
0.0394%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0338%
Overall
0.00698%
110/1,575,782 alleles · ultra-rare
exomes 103/1,423,618 · genomes 7/152,164 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.0569% | 1,759 |
| European (non-Finnish) | 0.00671% | 14,908 |
| Remaining individualsnot grpmax-eligible | 0.00495% | 20,222 |
| South Asian | 0.00345% | 28,995 |
| African / African-American | 0.00136% | 73,402 |
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
- APC2
- Protein
- p.Ala840=
- Coding
- c.2520G>A
- MANE Select
- NM_005883
- Type
- single nucleotide variant
- Location
- chr19:1465821 (GRCh38)
- Gene constraint
- LOEUF 0.961 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 48.87
- Residue 840
- a UniProt-annotated variant site (in cdcbm10)
Similar variants
- APC2 p.Ala1059Glu Uncertain significance ★★ ⚠ same type
- APC2 p.Ala1103Thr Uncertain significance ★★ ⚠ same type
- APC2 p.Ala1116Val Uncertain significance ★★ ⚠ same type
- APC2 p.Ala126Ser Uncertain significance ★★ ⚠ same type
- APC2 p.Ala1311Thr Uncertain significance ★★ ⚠ same type
- APC2 p.Ala1359Val Uncertain significance ★★ ⚠ same type
- APC2 p.Ala1438Thr Uncertain significance ★★ ⚠ same type
- APC2 p.Ala1492Glu 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/apc2-p-ala840 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown