BRD4 p.Ala1340=
c.4020C>T · VCV3718697
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0176%, sas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -1.3 | GERP -2.6 |
| Overall | ||
| CADD | 3.926 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0176%
South Asian · 14/79,398 alleles
Filtering AF
0.0106%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00847%
Overall
0.00169%
26/1,535,894 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0176% | 5,671 |
| East Asian | 0.00458% | 21,857 |
| Remaining individualsnot grpmax-eligible | 0.0034% | 29,430 |
| African / African-American | 0.00137% | 72,984 |
| European (non-Finnish) | 0.000614% | 162,835 |
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.Ala1340=
- Coding
- c.4020C>T
- MANE Select
- NM_001379291
- Type
- single nucleotide variant
- Location
- chr19:15238743 (GRCh38)
- Gene constraint
- LOEUF 0.191 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 56.20 · 613 PDB
- Residue 1340
- the 'c-terminal (ctd) region' region; a UniProt-annotated variant site (found in a patient with a neurodevelopmental syndrome; likely pathogenic)
Similar variants
- 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
- BRD4 p.Gln32Arg Uncertain significance ★★ ⚠ same type
- BRD4 p.Glu1123Lys 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-ala1340 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown