Is BRD4 p.Ala40Val (c.119C>T) pathogenic?

BRD4 p.Ala40Val (c.119C>T) is classified Uncertain significance in BRD4 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-11-08). AlphaMissense: likely benign (0.0755); Ultra-rare (popmax 0.033%, mid).

How common is BRD4 p.Ala40Val (c.119C>T) in the general population?

BRD4 p.Ala40Val (c.119C>T) is ultra-rare (popmax 0.033%, mid) (gnomAD).

What do computational predictors say about BRD4 p.Ala40Val (c.119C>T)?

AlphaMissense predicts likely benign (score 0.0755) — an in-silico prediction, not a clinical call.

BRD4 p.Ala40Val

c.119C>T · rs866414198 · VCV2870698

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0755 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.033%, mid)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0755	likely benign
REVEL	0.049	moderately benign-leaning
SaProt	LLR -6.78	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 7.5	GERP 1.5, phastCons 1
Regional constraint	o/e 1.00	unconstrained · MANE · 160 bp · p 0.98 · regional, not allelic
Overall
CADD	20.8	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 0.033% Middle Eastern · 2/6,062 alleles

Filtering AF 0.00582% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00242%

Overall 0.000342% 5/1,461,890 alleles · ultra-rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.033%	3,031
Admixed American	0.00167%	60,028
Remaining individualsnot grpmax-eligible	0.0016%	62,512
European (non-Finnish)	8.47e-05%	1,180,045

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: BRD4
Protein: p.Ala40Val
Coding: c.119C>T
MANE Select: NM_001379291
dbSNP: rs866414198
Type: single nucleotide variant
Location: chr19:15272981 (GRCh38)
Gene constraint: LOEUF 0.191 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 56.20 · 613 PDB
Residue 40: the 'disordered' region

Full BRD4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BRD4 p.Ala40Ser Uncertain significance ★ ⚠ same residue
BRD4 p.Ala40Thr Uncertain significance ★ ⚠ same residue
BRD4 p.Tyr430Cys Likely pathogenic ★★ same type
BRD4 p.Ala220Thr Uncertain significance ★★ ⚠ same type
BRD4 p.Ala409Thr Uncertain significance ★★ ⚠ same type
BRD4 p.Ala565Val Uncertain significance ★★ ⚠ same type
BRD4 p.Asp337Asn Uncertain significance ★★ ⚠ same type
BRD4 p.Asp497Gly 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/brd4-p-ala40val (accessed [today's date]).

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