Is BAZ2A p.Ala142Thr (c.424G>A) pathogenic?

BAZ2A p.Ala142Thr (c.424G>A) is classified Uncertain significance in BAZ2A (ClinVar, Single submitter, 1 submitter; last evaluated 2025-06-18). AlphaMissense: likely benign (0.1014); Very rare (popmax 0.00534%, afr).

How common is BAZ2A p.Ala142Thr (c.424G>A) in the general population?

BAZ2A p.Ala142Thr (c.424G>A) is very rare (popmax 0.00534%, afr) (gnomAD).

What do computational predictors say about BAZ2A p.Ala142Thr (c.424G>A)?

AlphaMissense predicts likely benign (score 0.1014) — an in-silico prediction, not a clinical call.

BAZ2A p.Ala142Thr

c.424G>A · VCV4197596

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1014 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00534%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1014	likely benign
REVEL	0.027	moderately benign-leaning
SaProt	LLR -6.12	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 1.1	GERP 0.73, phastCons 1
Regional constraint	o/e 0.92	unconstrained · MANE · 7,062 bp · p 0.042 · regional, not allelic
Overall
CADD	21.7	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.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM A144T vs ClinVar A142T) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00534% African / African-American · 4/74,882 alleles

Filtering AF 0.00175% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00104%

Overall 0.000372% 6/1,613,772 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00534%	18,720
Remaining individualsnot grpmax-eligible	0.0016%	62,460
European (non-Finnish)	8.48e-05%	1,179,874

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: BAZ2A
Protein: p.Ala142Thr
Coding: c.424G>A
MANE Select: NM_001300905
Type: single nucleotide variant
Location: chr12:56615320 (GRCh38)
Gene constraint: LOEUF 0.226 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 56.27 · 67 PDB

Full BAZ2A gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BAZ2A p.Ala1061Pro Uncertain significance ★ ⚠ same type
BAZ2A p.Ala1111Ser Uncertain significance ★ ⚠ same type
BAZ2A p.Ala1160Val Uncertain significance ★ ⚠ same type
BAZ2A p.Ala1223Val Uncertain significance ★ ⚠ same type
BAZ2A p.Ala1229Val Uncertain significance ★ ⚠ same type
BAZ2A p.Ala1770Val Uncertain significance ★ ⚠ same type
BAZ2A p.Ala17Val Uncertain significance ★ ⚠ same type
BAZ2A p.Ala1901Gly 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/baz2a-p-ala142thr (accessed [today's date]).

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