Is ACACA p.Thr1918Ala (c.5752A>G) pathogenic?

ACACA p.Thr1918Ala (c.5752A>G) is classified Uncertain significance in ACACA (ClinVar, Single submitter, 1 submitter; last evaluated 2024-04-22). AlphaMissense: ambiguous (0.3561); Absent from gnomAD v4.1.

How common is ACACA p.Thr1918Ala (c.5752A>G) in the general population?

ACACA p.Thr1918Ala (c.5752A>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about ACACA p.Thr1918Ala (c.5752A>G)?

AlphaMissense predicts ambiguous (score 0.3561) — an in-silico prediction, not a clinical call.

ACACA p.Thr1918Ala

c.5752A>G · VCV3643480

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.3561 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Computational evidence

Protein change
AlphaMissense	0.3561	ambiguous
REVEL	0.601	indeterminate
SaProt	LLR -6.43	tolerated
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 6.2	GERP 1.1, phastCons 1
Regional constraint	o/e 0.53	unconstrained · MANE · 101 kb · p 4.3e-52 · regional, not allelic
Overall
CADD	24.9	PHRED · no single calibrated threshold — expert panels disagree

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

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM T1881A vs ClinVar T1918A) — verify the residue.

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: ACACA
Protein: p.Thr1918Ala
Coding: c.5752A>G
MANE Select: NM_198834
Type: single nucleotide variant
Location: chr17:37130146 (GRCh38)
Gene constraint: LOEUF 0.374 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 83.05 · 10 PDB
Residue 1918: the coa carboxyltransferase c-terminal domain; the 'carboxyltransferase' region

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

Similar variants

ACACA p.Ala2308Val Uncertain significance ★★ ⚠ same type
ACACA p.Arg1206His Uncertain significance ★★ ⚠ same type
ACACA p.Arg2198Gln Uncertain significance ★★ ⚠ same type
ACACA p.Arg745Trp Uncertain significance ★★ ⚠ same type
ACACA p.Asn1903Ser Uncertain significance ★★ ⚠ same type
ACACA p.Asn728Ser Uncertain significance ★★ ⚠ same type
ACACA p.Asn950Ser Uncertain significance ★★ ⚠ same type
ACACA p.Asp2228Asn 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/acaca-p-thr1918ala (accessed [today's date]).

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