Is APC2 p.Arg823= (c.2469C>T) pathogenic?

APC2 p.Arg823= (c.2469C>T) is classified Likely benign in APC2 (ClinVar, Single submitter, 2 submitters; last evaluated 2025-07-21). Ultra-rare (popmax 0.0779%, afr).

How common is APC2 p.Arg823= (c.2469C>T) in the general population?

APC2 p.Arg823= (c.2469C>T) is ultra-rare (popmax 0.0779%, afr) (gnomAD).

APC2 p.Arg823=

c.2469C>T · rs374551146 · VCV710138

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0779%, 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 -0.72	GERP -3, phastCons 0.001
Overall
CADD	2.445	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0779% African / African-American · 57/73,158 alleles

Filtering AF 0.0617% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0558%

Overall 0.00386% 60/1,555,666 alleles · ultra-rare exomes 33/1,403,276 · genomes 27/152,390 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0779%	1,283
Remaining individualsnot grpmax-eligible	0.00333%	30,072
Admixed American	0.00189%	52,792

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.Arg823=
Coding: c.2469C>T
MANE Select: NM_005883
dbSNP: rs374551146
Type: single nucleotide variant
Location: chr19:1465770 (GRCh38)
Gene constraint: LOEUF 0.961 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 48.87
Residue 823: the 'disordered' region; a UniProt-annotated variant site (in cdcbm10)

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

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-arg823 (accessed [today's date]).

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