Is APC2 p.Arg286His (c.857G>A) pathogenic?

APC2 p.Arg286His (c.857G>A) is classified Uncertain significance in APC2 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-08-30). AlphaMissense: ambiguous (0.4497); Very rare (popmax 0.00134%, afr); Associated with Inborn genetic diseases.

What condition is associated with APC2 p.Arg286His (c.857G>A)?

APC2 p.Arg286His (c.857G>A) is associated with Inborn genetic diseases (ClinVar).

How common is APC2 p.Arg286His (c.857G>A) in the general population?

APC2 p.Arg286His (c.857G>A) is very rare (popmax 0.00134%, afr) (gnomAD).

What do computational predictors say about APC2 p.Arg286His (c.857G>A)?

AlphaMissense predicts ambiguous (score 0.4497) — an in-silico prediction, not a clinical call.

APC2 p.Arg286His

c.857G>A · rs951582237 · VCV2247086

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4497 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00134%, afr)

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.4497	ambiguous
REVEL	0.414	indeterminate
SaProt	LLR -7.56	tolerated
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.5	GERP -1.9, phastCons 1
Overall
CADD	25.7	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00134% African / African-American · 1/74,602 alleles

Overall 6.95e-05% 1/1,438,314 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: APC2
Protein: p.Arg286His
Coding: c.857G>A
MANE Select: NM_005883
dbSNP: rs951582237
Type: single nucleotide variant
Location: chr19:1456893 (GRCh38)
Gene constraint: LOEUF 0.961 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 48.87
Residue 286: a UniProt-annotated variant site (in cdcbm10)

Full APC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

APC2 p.Ala1059Glu Uncertain significance ★★ ⚠ same condition
APC2 p.Ala1103Thr Uncertain significance ★★ ⚠ same condition
APC2 p.Ala1116Val Uncertain significance ★★ ⚠ same condition
APC2 p.Ala126Ser Uncertain significance ★★ ⚠ same condition
APC2 p.Ala1311Thr Uncertain significance ★★ ⚠ same condition
APC2 p.Ala1359Val Uncertain significance ★★ ⚠ same condition
APC2 p.Ala1438Thr Uncertain significance ★★ ⚠ same condition
APC2 p.Ala1492Glu Uncertain significance ★★ ⚠ 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/apc2-p-arg286his (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown