Is BACE2 p.Ala25Val (c.74C>T) pathogenic?

BACE2 p.Ala25Val (c.74C>T) is classified Uncertain significance in BACE2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-17). AlphaMissense: likely benign (0.1255); Very rare (popmax 0.00318%, eas).

How common is BACE2 p.Ala25Val (c.74C>T) in the general population?

BACE2 p.Ala25Val (c.74C>T) is very rare (popmax 0.00318%, eas) (gnomAD).

What do computational predictors say about BACE2 p.Ala25Val (c.74C>T)?

AlphaMissense predicts likely benign (score 0.1255) — an in-silico prediction, not a clinical call.

BACE2 p.Ala25Val

c.74C>T · VCV3259821

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1255 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00318%, eas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1255	likely benign
REVEL	0.037	moderately benign-leaning
SaProt	LLR -7.88	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 1.3	GERP -1, phastCons 0.78
Regional constraint	o/e 0.95	unconstrained · MANE · 69 kb · p 0.41 · regional, not allelic
Overall
CADD	13.1	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00318% East Asian · 1/31,464 alleles

Overall 0.000367% 5/1,363,868 alleles · very rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00318%	31,464
Admixed American	0.00315%	31,744
South Asian	0.00176%	56,924
African / African-American	0.00153%	65,470
European (non-Finnish)	9.47e-05%	1,056,294

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: BACE2
Protein: p.Ala25Val
Coding: c.74C>T
MANE Select: NM_012105
Type: single nucleotide variant
Location: chr21:41168337 (GRCh38)
Gene constraint: LOEUF 0.574 · pLI 0.73 (gnomAD)
Structure: AlphaFold pLDDT 83.31 · 19 PDB

Full BACE2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BACE2 c.1135-10C>T Benign ★★ same type
BACE2 c.1304-8C>T Benign ★★ same type
BACE2 p.His56Tyr Benign ★★ ⚠ same type
BACE2 p.Ser88= Likely benign ★★ same type
BACE2 p.Ala200Gly Uncertain significance ★ ⚠ same type
BACE2 p.Ala297Thr Uncertain significance ★ ⚠ same type
BACE2 p.Ala36Thr Uncertain significance ★ ⚠ same type
BACE2 p.Ala404Val 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/bace2-p-ala25val (accessed [today's date]).

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