Is BAP1 p.Tyr627= (c.1881C>T) pathogenic?

BAP1 p.Tyr627= (c.1881C>T) is classified Benign/Likely benign in BAP1 (ClinVar, Multiple submitters, 4 submitters; last evaluated 2025-04-11). Very rare (popmax 0.00267%, afr); Associated with BAP1-related tumor predisposition syndrome.

What condition is associated with BAP1 p.Tyr627= (c.1881C>T)?

BAP1 p.Tyr627= (c.1881C>T) is associated with BAP1-related tumor predisposition syndrome, hereditary neoplastic syndrome (ClinVar).

How common is BAP1 p.Tyr627= (c.1881C>T) in the general population?

BAP1 p.Tyr627= (c.1881C>T) is very rare (popmax 0.00267%, afr) (gnomAD).

How is BAP1-related tumor predisposition syndrome inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

BAP1 p.Tyr627=

c.1881C>T · rs964152039 · VCV485284

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 4 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00267%, afr)

Conditions

BAP1-related tumor predisposition 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>C here scores Δ0.21 · evaluated, not missing
Constraint at this position
Conservation	phyloP 1.5	GERP -0.26, phastCons 1
Overall
CADD	4.682	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00267% African / African-American · 2/74,940 alleles

Filtering AF 0.000443% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000166%

Overall 0.000372% 6/1,613,372 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00267%	37,470
European (non-Finnish)	0.000339%	295,005

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: BAP1
Protein: p.Tyr627=
Coding: c.1881C>T
MANE Select: NM_007212 · reported on NM_004656
dbSNP: rs964152039
Type: single nucleotide variant
Location: chr3:52403147 (GRCh38)
Structure: AlphaFold pLDDT 78.27 · 28 PDB

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

Disease context

Also linked: hereditary neoplastic syndrome

For BAP1-related tumor predisposition syndrome (Orphanet):

Inheritance: Autosomal dominant
Onset: Adult

Similar variants

BAP1 p.Tyr627Phe Uncertain significance ★ ⚠ same residue
BAP1 p.Tyr627_Ser628delinsTer 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.122+5G>A Pathogenic/Likely pathogenic ★★ same condition
BAP1 c.122+5G>C Likely pathogenic ★★ same condition
BAP1 c.1251-1G>A Likely 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-tyr627 (accessed [today's date]).

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