Is BAP1 p.His274Arg (c.821A>G) pathogenic?

BAP1 p.His274Arg (c.821A>G) is classified Uncertain significance in BAP1 (ClinVar, Multiple submitters, 4 submitters; last evaluated 2025-05-12). AlphaMissense: likely benign (0.1197); Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with BAP1 p.His274Arg (c.821A>G)?

BAP1 p.His274Arg (c.821A>G) is associated with hereditary neoplastic syndrome, BAP1-related tumor predisposition syndrome (ClinVar).

How common is BAP1 p.His274Arg (c.821A>G) in the general population?

BAP1 p.His274Arg (c.821A>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about BAP1 p.His274Arg (c.821A>G)?

AlphaMissense predicts likely benign (score 0.1197) — an in-silico prediction, not a clinical call.

BAP1 p.His274Arg

c.821A>G · rs565400314 · VCV1762497

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 4 submitters

AlphaMissense

likely benign

0.1197 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.1197	likely benign
REVEL	0.071	moderately benign-leaning
SaProt	LLR -6.20	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 6.2	GERP 0.96, phastCons 1
Overall
CADD	19.04	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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: BAP1
Protein: p.His274Arg
Coding: c.821A>G
MANE Select: NM_007212 · reported on NM_004656
dbSNP: rs565400314
Type: single nucleotide variant
Location: chr3:52405875 (GRCh38)
Structure: AlphaFold pLDDT 78.27 · 28 PDB
Residue 274: an α-helix

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

Also linked: BAP1-related tumor predisposition syndrome

Similar variants

BAP1 p.His274Gln Uncertain significance ★★ ⚠ same residue
BAP1 p.His274Tyr Uncertain significance ★★ ⚠ same residue
BAP1 p.His274Asp Uncertain significance ★ ⚠ same residue
BAP1 p.His274Leu Uncertain significance ★ ⚠ same residue
BAP1 p.His274Pro Conflicting classifications of pathogenicity ★ ⚠ same residue
BAP1 p.His274= Likely benign ★ same residue
RNF2 p.Ser274Asn Uncertain significance ★ ⚠ same residue
BAP1 c.1117-1G>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-his274arg (accessed [today's date]).

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