Is BRD1 p.Lys331Gln (c.991A>C) pathogenic?

BRD1 p.Lys331Gln (c.991A>C) is classified Uncertain significance in BRD1 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-05-26). AlphaMissense: likely pathogenic (0.6544); Absent from gnomAD v4.1.

How common is BRD1 p.Lys331Gln (c.991A>C) in the general population?

BRD1 p.Lys331Gln (c.991A>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about BRD1 p.Lys331Gln (c.991A>C)?

AlphaMissense predicts likely pathogenic (score 0.6544) — an in-silico prediction, not a clinical call.

BRD1 p.Lys331Gln

c.991A>C · VCV3261667

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.6544 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.6544	likely pathogenic
REVEL	0.468	indeterminate
SaProt	LLR -11.27	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 6.2	GERP 2.8, phastCons 1
Regional constraint	o/e 0.51	unconstrained · MANE · 662 bp · p 5.5e-18 · regional, not allelic
Overall
CADD	29.2	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: BRD1
Protein: p.Lys331Gln
Coding: c.991A>C
MANE Select: NM_001304808
Type: single nucleotide variant
Location: chr22:49823327 (GRCh38)
Gene constraint: LOEUF 0.337 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 72.54 · 318 PDB
Residue 331: a turn

Full BRD1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BRD1 c.1657-4C>T Likely benign ★★ same type
BRD1 p.Ala1053= Benign ★★ same type
BRD1 p.Ala730Thr Benign ★★ same type
BRD1 p.Arg1020= Benign ★★ same type
BRD1 p.Gly620= Likely benign ★★ same type
BRD1 p.Gly776Arg Benign ★★ ⚠ same type
BRD1 p.Phe193= Benign ★★ same type
BRD1 p.Pro111= Benign ★★ 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/brd1-p-lys331gln (accessed [today's date]).

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