Is ABCD2 p.Ala251Gly (c.752C>G) pathogenic?

ABCD2 p.Ala251Gly (c.752C>G) is classified Uncertain significance in ABCD2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-01-22). AlphaMissense: ambiguous (0.4145); Very rare (popmax 8.47e-05%, nfe).

How common is ABCD2 p.Ala251Gly (c.752C>G) in the general population?

ABCD2 p.Ala251Gly (c.752C>G) is very rare (popmax 8.47e-05%, nfe) (gnomAD).

What do computational predictors say about ABCD2 p.Ala251Gly (c.752C>G)?

AlphaMissense predicts ambiguous (score 0.4145) — an in-silico prediction, not a clinical call.

ABCD2 p.Ala251Gly

c.752C>G · VCV3881050

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4145 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.47e-05%, nfe)

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Computational evidence

Protein change
AlphaMissense	0.4145	ambiguous
REVEL	0.803	moderately pathogenic-leaning
SaProt	LLR -6.96	tolerated
⇒ REVEL calls this damaging; SaProt does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 1.7, phastCons 1
Regional constraint	o/e 0.65	unconstrained · MANE · 14 kb · p 1.3e-09 · regional, not allelic
Overall
CADD	24.4	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 8.47e-05% European (non-Finnish) · 1/1,180,044 alleles

Overall 6.84e-05% 1/1,461,890 alleles · very rare

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: ABCD2
Protein: p.Ala251Gly
Coding: c.752C>G
MANE Select: NM_005164
Type: single nucleotide variant
Location: chr12:39618864 (GRCh38)
Gene constraint: LOEUF 0.714 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 81.65
Residue 251: the abc transmembrane type-1 domain

Full ABCD2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ABCD2 c.1878-18G>C Benign/Likely benign ★★ same type
ABCD2 p.Ala273Thr Uncertain significance ★ ⚠ same type
ABCD2 p.Ala489Glu Uncertain significance ★ ⚠ same type
ABCD2 p.Arg16Thr Uncertain significance ★ ⚠ same type
ABCD2 p.Arg178Cys Uncertain significance ★ ⚠ same type
ABCD2 p.Arg178His Uncertain significance ★ ⚠ same type
ABCD2 p.Arg337Cys Uncertain significance ★ ⚠ same type
ABCD2 p.Arg385Gln 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/abcd2-p-ala251gly (accessed [today's date]).

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