Is CD79B p.Asn127= (c.381C>T) pathogenic?

CD79B p.Asn127= (c.381C>T) is classified Likely benign in CD79B (ClinVar, Single submitter, 1 submitter; last evaluated 2019-12-31). Absent from gnomAD v4.1; Associated with agammaglobulinemia 6, autosomal recessive.

What condition is associated with CD79B p.Asn127= (c.381C>T)?

CD79B p.Asn127= (c.381C>T) is associated with agammaglobulinemia 6, autosomal recessive (ClinVar).

How common is CD79B p.Asn127= (c.381C>T) in the general population?

CD79B p.Asn127= (c.381C>T) is absent from gnomAD v4.1 (gnomAD).

CD79B p.Asn127=

c.381C>T · rs1555598971 · VCV538693

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

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 -8	GERP -4
Overall
CADD	0.052	PHRED · no single calibrated threshold — expert panels disagree

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: CD79B
Protein: p.Asn127=
Coding: c.381C>T
MANE Select: NM_000626
dbSNP: rs1555598971
Type: single nucleotide variant
Location: chr17:63930123 (GRCh38)
Gene constraint: LOEUF 0.421 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 76.02 · 6 PDB
Residue 127: a β-strand; the ig-like v-type 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.Asn127Asp 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.Thr212Met Uncertain significance ★★ ⚠ same condition
CD79B p.Val175Met Uncertain significance ★★ 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-asn127 (accessed [today's date]).

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