Is AOC2 p.Ala8Val (c.23C>T) pathogenic?

AOC2 p.Ala8Val (c.23C>T) is classified Likely benign in AOC2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-02-16). AlphaMissense: likely benign (0.0646); Very rare (popmax 0.00382%, nfe).

How common is AOC2 p.Ala8Val (c.23C>T) in the general population?

AOC2 p.Ala8Val (c.23C>T) is very rare (popmax 0.00382%, nfe) (gnomAD).

What do computational predictors say about AOC2 p.Ala8Val (c.23C>T)?

AlphaMissense predicts likely benign (score 0.0646) — an in-silico prediction, not a clinical call.

AOC2 p.Ala8Val

c.23C>T · rs776084904 · VCV2486492

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0646 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00382%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0646	likely benign
REVEL	0.02	moderately benign-leaning
SaProt	LLR -6.68	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.39	GERP -4.2
Regional constraint	o/e 1.05	unconstrained · MANE · 5,718 bp · p 0.1 · regional, not allelic
Overall
CADD	1.575	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 0.00382% European (non-Finnish) · 45/1,179,134 alleles

Filtering AF 0.00291% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0026%

Overall 0.00291% 47/1,612,766 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00382%	26,203
Remaining individualsnot grpmax-eligible	0.00321%	31,198

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: AOC2
Protein: p.Ala8Val
Coding: c.23C>T
MANE Select: NM_009590
dbSNP: rs776084904
Type: single nucleotide variant
Location: chr17:42844649 (GRCh38)
Gene constraint: LOEUF 1.292 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.10

Full AOC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

AOC2 p.Arg597= Benign ★★ same type
AOC2 p.Pro141Leu Benign ★★ ⚠ same type
AOC2 p.Ala104Thr Uncertain significance ★ ⚠ same type
AOC2 p.Ala218Thr Uncertain significance ★ ⚠ same type
AOC2 p.Ala415Pro Uncertain significance ★ ⚠ same type
AOC2 p.Ala450Val Uncertain significance ★ ⚠ same type
AOC2 p.Ala519Gly Uncertain significance ★ ⚠ same type
AOC2 p.Ala592Thr 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/aoc2-p-ala8val (accessed [today's date]).

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