Is BRIP1 p.Cys350= (c.1050T>C) pathogenic?

BRIP1 p.Cys350= (c.1050T>C) is classified Benign/Likely benign in BRIP1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2024-08-22). Very rare (popmax 0.00133%, afr); Associated with hereditary neoplastic syndrome.

What condition is associated with BRIP1 p.Cys350= (c.1050T>C)?

BRIP1 p.Cys350= (c.1050T>C) is associated with hereditary neoplastic syndrome, Fanconi anemia complementation group J, hereditary breast carcinoma (ClinVar).

How common is BRIP1 p.Cys350= (c.1050T>C) in the general population?

BRIP1 p.Cys350= (c.1050T>C) is very rare (popmax 0.00133%, afr) (gnomAD).

BRIP1 p.Cys350=

c.1050T>C · rs1555607717 · VCV461058

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00133%, afr)

Conditions

hereditary neoplastic syndrome

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 1	GERP -0.62, phastCons 0.99
Overall
CADD	8.358	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00133% African / African-American · 1/75,040 alleles

Overall 6.84e-05% 1/1,461,790 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.Cys350=
Coding: c.1050T>C
MANE Select: NM_032043
dbSNP: rs1555607717
Type: single nucleotide variant
Location: chr17:61801343 (GRCh38)
Gene constraint: LOEUF 0.848 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 64.19 · 6 PDB
Residue 350: 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 neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: Fanconi anemia complementation group J hereditary breast carcinoma

Similar variants

BRIP1 p.Cys350Arg Uncertain significance ★★ ⚠ same residue
BRIP1 p.Cys350Gly Uncertain significance ★★ ⚠ same residue
BRIP1 p.Cys350Ser Uncertain significance ★ ⚠ same residue
BRIP1 p.Cys350Tyr Uncertain significance ★ ⚠ same residue
BRIP1 p.Cys350fs Pathogenic ★ 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

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-cys350 (accessed [today's date]).

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