Is CHAC2 p.Ala149Gly (c.446C>G) pathogenic?

CHAC2 p.Ala149Gly (c.446C>G) is classified Uncertain significance in CHAC2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-04-13). AlphaMissense: likely benign (0.2996); Absent from gnomAD v4.1.

How common is CHAC2 p.Ala149Gly (c.446C>G) in the general population?

CHAC2 p.Ala149Gly (c.446C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CHAC2 p.Ala149Gly (c.446C>G)?

AlphaMissense predicts likely benign (score 0.2996) — an in-silico prediction, not a clinical call.

CHAC2 p.Ala149Gly

c.446C>G · rs2529425075 · VCV2284178

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2996 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.2996	likely benign
REVEL	0.433	indeterminate
SaProt	LLR -10.77	damaging
⇒ SaProt calls this damaging; AlphaMissense does not; REVEL makes no call.
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP 7.7	GERP 2.9, phastCons 1
Regional constraint	o/e 1.21	unconstrained · MANE · 6,635 bp · p 0.0017 · regional, not allelic
Overall
CADD	26.9	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: CHAC2
Protein: p.Ala149Gly
Coding: c.446C>G
MANE Select: NM_016115 · reported on NM_001008708
dbSNP: rs2529425075
Type: single nucleotide variant
Location: chr2:53774416 (GRCh38)

Full CHAC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

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/chac2-p-ala149gly (accessed [today's date]).

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