Is BAP1 p.Tyr223= (c.669C>T) pathogenic?

BAP1 p.Tyr223= (c.669C>T) is classified Likely benign in BAP1 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-10-03). Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with BAP1 p.Tyr223= (c.669C>T)?

BAP1 p.Tyr223= (c.669C>T) is associated with hereditary neoplastic syndrome (ClinVar).

How common is BAP1 p.Tyr223= (c.669C>T) in the general population?

BAP1 p.Tyr223= (c.669C>T) is absent from gnomAD v4.1 (gnomAD).

BAP1 p.Tyr223=

c.669C>T · rs2153227498 · VCV1754946

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>T here scores Δ0.58 · evaluated, not missing
Constraint at this position
Conservation	phyloP 6.6	GERP 0.98, phastCons 1
Overall
CADD	13.28	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: BAP1
Protein: p.Tyr223=
Coding: c.669C>T
MANE Select: NM_007212 · reported on NM_004656
dbSNP: rs2153227498
Type: single nucleotide variant
Location: chr3:52406367 (GRCh38)
Structure: AlphaFold pLDDT 78.27 · 28 PDB

Full BAP1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hereditary neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

BAP1 p.Tyr223Cys Uncertain significance ★★ ⚠ same residue
BAP1 p.Tyr223Ter Pathogenic ★ same residue
BAP1 c.1117-1G>A Likely pathogenic ★★ same condition
BAP1 c.122+1G>A Pathogenic ★★ same condition
BAP1 c.122+1G>T Pathogenic/Likely pathogenic ★★ same condition
BAP1 c.1251-1G>A Likely pathogenic ★★ same condition
BAP1 c.1251-2A>G Likely pathogenic ★★ same condition
BAP1 c.1729+1G>A Pathogenic ★★ 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/bap1-p-tyr223 (accessed [today's date]).

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