Is BAP1 p.Ser455Pro (c.1363T>C) pathogenic?

BAP1 p.Ser455Pro (c.1363T>C) is classified Uncertain significance in BAP1 (ClinVar, Multiple submitters, 4 submitters; last evaluated 2025-03-04). AlphaMissense: likely pathogenic (0.8512); Ultra-rare (popmax 0.0165%, mid); Associated with BAP1-related disorder.

What condition is associated with BAP1 p.Ser455Pro (c.1363T>C)?

BAP1 p.Ser455Pro (c.1363T>C) is associated with BAP1-related disorder, BAP1-related tumor predisposition syndrome, hereditary neoplastic syndrome (ClinVar).

How common is BAP1 p.Ser455Pro (c.1363T>C) in the general population?

BAP1 p.Ser455Pro (c.1363T>C) is ultra-rare (popmax 0.0165%, mid) (gnomAD).

What do computational predictors say about BAP1 p.Ser455Pro (c.1363T>C)?

AlphaMissense predicts likely pathogenic (score 0.8512) — an in-silico prediction, not a clinical call.

BAP1 p.Ser455Pro

c.1363T>C · rs1559586983 · VCV628197

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 4 submitters

AlphaMissense

likely pathogenic

0.8512 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0165%, mid)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

BAP1-related disorder

Computational evidence

Protein change
AlphaMissense	0.8512	likely pathogenic
REVEL	0.175	moderately benign-leaning
SaProt	LLR -7.39	tolerated
⇒ AlphaMissense calls this damaging; REVEL and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 8	GERP -0.069, phastCons 1
Overall
CADD	20.7	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

Grpmax group 0.0165% Middle Eastern · 1/6,062 alleles

Overall 6.84e-05% 1/1,461,826 alleles · ultra-rare

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.Ser455Pro
Coding: c.1363T>C
MANE Select: NM_007212 · reported on NM_004656
dbSNP: rs1559586983
Type: single nucleotide variant
Location: chr3:52403782 (GRCh38)
Structure: AlphaFold pLDDT 78.27 · 28 PDB

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

Disease context

BAP1-related disorder

Also linked: BAP1-related tumor predisposition syndrome hereditary neoplastic syndrome

Similar variants

BAP1 p.Ser455= Benign/Likely benign ★★ same residue
BAP1 p.Ser455Ala Uncertain significance ★ ⚠ 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-ser455pro (accessed [today's date]).

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