Is BRIP1 p.Cys298= (c.894C>T) pathogenic?

BRIP1 p.Cys298= (c.894C>T) is classified Benign/Likely benign in BRIP1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2024-10-30). Very rare (popmax 0.0011%, sas); Associated with hereditary breast carcinoma.

What condition is associated with BRIP1 p.Cys298= (c.894C>T)?

BRIP1 p.Cys298= (c.894C>T) is associated with hereditary breast carcinoma, Fanconi anemia complementation group J, hereditary neoplastic syndrome (ClinVar).

How common is BRIP1 p.Cys298= (c.894C>T) in the general population?

BRIP1 p.Cys298= (c.894C>T) is very rare (popmax 0.0011%, sas) (gnomAD).

How is Hereditary breast cancer inherited?

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

BRIP1 p.Cys298=

c.894C>T · rs2078107086 · VCV959996

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.0011%, sas)

Conditions

hereditary breast carcinoma

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.5	GERP -0.067, phastCons 1
Overall
CADD	7.07	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0011% South Asian · 1/91,056 alleles

Overall 6.84e-05% 1/1,461,370 alleles · very 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: BRIP1
Protein: p.Cys298=
Coding: c.894C>T
MANE Select: NM_032043
dbSNP: rs2078107086
Type: single nucleotide variant
Location: chr17:61808491 (GRCh38)
Gene constraint: LOEUF 0.848 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 64.19 · 6 PDB
Residue 298: the helicase atp-binding domain; a binding site

Full BRIP1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

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

Also linked: Fanconi anemia complementation group J hereditary neoplastic syndrome

For Hereditary breast cancer (Orphanet):

Inheritance: Autosomal dominant, Multigenic/multifactorial
Onset: Adult, Elderly

Similar variants

BRIP1 p.Cys298Arg Uncertain significance ★★ ⚠ same residue
BRIP1 p.Cys298Phe Uncertain significance ★★ ⚠ same residue
BRIP1 p.Cys298Trp Uncertain significance ★★ ⚠ same residue
BRIP1 p.Cys298Tyr Uncertain significance ★ ⚠ same residue
BRIP1 c.1140+1G>A Likely pathogenic ★★ same condition
BRIP1 c.1141-2A>C Likely pathogenic ★★ same condition
BRIP1 c.1141-2A>G Likely pathogenic ★★ same condition
BRIP1 c.1141-2A>T 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/brip1-p-cys298 (accessed [today's date]).

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