Is CBLB p.Ala176Pro (c.526G>C) pathogenic?

CBLB p.Ala176Pro (c.526G>C) is classified Uncertain significance in CBLB (ClinVar, Single submitter, 1 submitter; last evaluated 2025-09-01). AlphaMissense: likely pathogenic (0.9337); Absent from gnomAD v4.1.

How common is CBLB p.Ala176Pro (c.526G>C) in the general population?

CBLB p.Ala176Pro (c.526G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CBLB p.Ala176Pro (c.526G>C)?

AlphaMissense predicts likely pathogenic (score 0.9337) — an in-silico prediction, not a clinical call.

CBLB p.Ala176Pro

c.526G>C · VCV4219957

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9337 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9337	likely pathogenic
REVEL	0.891	moderately pathogenic-leaning
SaProt	LLR -4.34	tolerated
⇒ AlphaMissense and REVEL call this damaging; SaProt does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.6	GERP 2.8, phastCons 1
Regional constraint	o/e 0.72	unconstrained · MANE · 164 kb · p 3.4e-12 · regional, not allelic
Overall
CADD	28.4	PHRED · no single calibrated threshold — expert panels disagree

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: CBLB
Protein: p.Ala176Pro
Coding: c.526G>C
MANE Select: NM_170662
Type: single nucleotide variant
Location: chr3:105776436 (GRCh38)
Gene constraint: LOEUF 0.406 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 62.88 · 36 PDB
Residue 176: the cbl-ptb domain; the 'ef-hand-like' region; an α-helix

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

Similar variants

CBLB p.Arg670Gln Benign/Likely benign ★★ same type
CBLB p.Pro387= Benign ★★ same type
CBLB p.Pro689= Benign/Likely benign ★★ same type
CBLB p.Ser622Thr Benign/Likely benign ★★ same type
CBLB c.2569+1609A>C Uncertain significance ★ same type
CBLB p.Ala2Glu Uncertain significance ★ ⚠ same type
CBLB p.Ala592Ser Uncertain significance ★ ⚠ same type
CBLB p.Ala928Val 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/cblb-p-ala176pro (accessed [today's date]).

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