Is CD79B p.Thr212= (c.636G>A) pathogenic?

CD79B p.Thr212= (c.636G>A) is classified Likely benign in CD79B (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-13). Very rare (popmax 0.00533%, afr); Associated with agammaglobulinemia 6, autosomal recessive.

What condition is associated with CD79B p.Thr212= (c.636G>A)?

CD79B p.Thr212= (c.636G>A) is associated with agammaglobulinemia 6, autosomal recessive (ClinVar).

How common is CD79B p.Thr212= (c.636G>A) in the general population?

CD79B p.Thr212= (c.636G>A) is very rare (popmax 0.00533%, afr) (gnomAD).

CD79B p.Thr212=

c.636G>A · rs534051167 · VCV1634840

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00533%, afr)

Conditions

agammaglobulinemia 6, autosomal recessive

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	GERP -3.3
Overall
CADD	6.265	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00533% African / African-American · 4/75,036 alleles

Filtering AF 0.00174% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00104%

Overall 0.000496% 8/1,614,024 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00533%	18,759
East Asian	0.00446%	22,437
Remaining individualsnot grpmax-eligible	0.0016%	62,502
South Asian	0.0011%	91,072

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: CD79B
Protein: p.Thr212=
Coding: c.636G>A
MANE Select: NM_000626
dbSNP: rs534051167
Type: single nucleotide variant
Location: chr17:63929280 (GRCh38)
Gene constraint: LOEUF 0.421 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 76.02 · 6 PDB
Residue 212: the itam domain

Full CD79B gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

agammaglobulinemia 6, autosomal recessive — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

CD79B p.Thr212Met Uncertain significance ★★ ⚠ same residue
CD79B p.Ala5Val Uncertain significance ★★ ⚠ same condition
CD79B p.Arg36Trp Uncertain significance ★★ ⚠ same condition
CD79B p.Gly216Arg Uncertain significance ★★ ⚠ same condition
CD79B p.Leu91Pro Uncertain significance ★★ ⚠ same condition
CD79B p.Met96Val Uncertain significance ★★ ⚠ same condition
CD79B p.Val175Met Uncertain significance ★★ ⚠ same condition
CD79B c.118+12C>T Benign/Likely benign ★★ same condition

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/cd79b-p-thr212 (accessed [today's date]).

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