Is AOC2 p.Thr491Ile (c.1472C>T) pathogenic?

AOC2 p.Thr491Ile (c.1472C>T) is classified Uncertain significance in AOC2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-08). AlphaMissense: likely pathogenic (0.6393); Very rare (popmax 0.00402%, nfe).

How common is AOC2 p.Thr491Ile (c.1472C>T) in the general population?

AOC2 p.Thr491Ile (c.1472C>T) is very rare (popmax 0.00402%, nfe) (gnomAD).

What do computational predictors say about AOC2 p.Thr491Ile (c.1472C>T)?

AlphaMissense predicts likely pathogenic (score 0.6393) — an in-silico prediction, not a clinical call.

AOC2 p.Thr491Ile

c.1472C>T · rs746338041 · VCV2324344

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.6393 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00402%, nfe)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.6393	likely pathogenic
REVEL	0.176	moderately benign-leaning
SaProt	LLR -9.16	tolerated
⇒ AlphaMissense calls this damaging; REVEL and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.9	GERP 2.1, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 5,718 bp · p 0.1 · regional, not allelic
Overall
CADD	23.4	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 0.00402% European (non-Finnish) · 47/1,169,312 alleles

Filtering AF 0.0031% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00278%

Overall 0.00332% 48/1,445,388 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00402%	24,879
South Asian	0.00112%	89,158

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.Thr491Ile
Coding: c.1472C>T
MANE Select: NM_009590
dbSNP: rs746338041
Type: single nucleotide variant
Location: chr17:42846098 (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-thr491ile (accessed [today's date]).

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