Is BCL9 p.Arg29His (c.86G>A) pathogenic?

BCL9 p.Arg29His (c.86G>A) is classified Uncertain significance in BCL9 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-10-03). AlphaMissense: likely benign (0.0921); Very rare (popmax 0.00267%, afr).

How common is BCL9 p.Arg29His (c.86G>A) in the general population?

BCL9 p.Arg29His (c.86G>A) is very rare (popmax 0.00267%, afr) (gnomAD).

What do computational predictors say about BCL9 p.Arg29His (c.86G>A)?

AlphaMissense predicts likely benign (score 0.0921) — an in-silico prediction, not a clinical call.

BCL9 p.Arg29His

c.86G>A · rs782240143 · VCV3133467

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0921 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00267%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0921	likely benign
REVEL	0.086	moderately benign-leaning
SaProt	LLR -7.38	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 12	GERP 1.3, phastCons 1
Regional constraint	o/e 1.03	unconstrained · MANE · 9,077 bp · p 0.29 · regional, not allelic
Overall
CADD	25.0	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 0.00267% African / African-American · 2/74,882 alleles

Filtering AF 0.00111% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0009%

Overall 0.00149% 24/1,613,784 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00267%	37,441
European (non-Finnish)	0.0017%	58,996
Admixed American	0.00167%	59,964
South Asian	0.0011%	91,062

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: BCL9
Protein: p.Arg29His
Coding: c.86G>A
MANE Select: NM_004326
dbSNP: rs782240143
Type: single nucleotide variant
Location: chr1:147612915 (GRCh38)
Gene constraint: LOEUF 0.374 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 43.07 · 8 PDB
Residue 29: the 'disordered' region

Full BCL9 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BCL9 p.Arg29Cys Uncertain significance ★ ⚠ same residue
BCL9 c.661-8G>T Benign/Likely benign ★★ same type
BCL9 p.Arg485= Benign ★★ same type
BCL9 p.Ala1042Thr Uncertain significance ★ ⚠ same type
BCL9 p.Ala1190Val Uncertain significance ★ ⚠ same type
BCL9 p.Ala1281Asp Uncertain significance ★ ⚠ same type
BCL9 p.Ala128Pro Uncertain significance ★ ⚠ same type
BCL9 p.Ala1337Val 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/bcl9-p-arg29his (accessed [today's date]).

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