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| Gene | BRIP1 |
| Variant | T997fs |
| Impact List | frameshift |
| Protein Effect | loss of function - predicted |
| Gene Variant Descriptions | BRIP1 T997fs results in a change in the amino acid sequence of the Brip1 protein beginning at aa 997 of 1249, likely resulting in premature truncation of the functional protein (UniProt.org). T997fs has not been characterized, however, due to the effects of other truncation mutations downstream of T997 (PMID: 18628483), is predicted to lead to a loss of Brip1 protein function. |
| Associated Drug Resistance | |
| Category Variants Paths |
BRIP1 mutant BRIP1 inact mut BRIP1 T997fs |
| Transcript | NM_032043.3 |
| gDNA | chr17:g.(61684057_61684058) |
| cDNA | c.(2989_2988) |
| Protein | p.T997fs |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| XM_011525335.3 | chr17:g.(61684057_61684058) | c.(2989_2988) | p.T997fs | RefSeq | GRCh38/hg38 |
| XM_011525335.4 | chr17:g.(61684057_61684058) | c.(2989_2988) | p.T997fs | RefSeq | GRCh38/hg38 |
| NM_032043.3 | chr17:g.(61684057_61684058) | c.(2989_2988) | p.T997fs | RefSeq | GRCh38/hg38 |
| XM_047436891.1 | chr17:g.(61684057_61684058) | c.(2989_2988) | p.T997fs | RefSeq | GRCh38/hg38 |
| XM_047436892.1 | chr17:g.(61684057_61684058) | c.(2989_2988) | p.T997fs | RefSeq | GRCh38/hg38 |
| NM_032043.2 | chr17:g.(61684057_61684058) | c.(2989_2988) | p.T997fs | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| BRIP1 inact mut | prostate cancer | sensitive | Olaparib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III trial (PROfound) that supported FDA approval, Lynparza (olaparib) treatment significantly improved median imaging-based progression-free survival (5.8 vs 3.5 mo, HR 0.49, p<0.001) compared to control in patients with metastatic castration-resistant prostate cancer who progressed on hormone therapy and harbored deleterious or suspected deleterious mutations in homologous recombination repair genes, including BRIP1 (PMID: 32343890; NCT02987543). | detail... 32343890 detail... |
| BRIP1 inact mut | prostate cancer | sensitive | Olaparib | Guideline | Actionable | Lynparza (olaparib) is included in guidelines as second-line therapy post androgen receptor-directed therapy for patients with metastatic castration-resistant prostate cancer harboring pathogenic mutations in BRIP1 (NCCN.org). | detail... |
| BRIP1 inact mut | prostate cancer | predicted - sensitive | Rucaparib | Case Reports/Case Series | Actionable | In a Phase II trial (TRITON2), 1 of 2 patients with metastatic castrate-resistant prostate cancer harboring deleterious BRIP1 alterations demonstrated a PSA response and partial radiographic response after treatment with Rubraca (rucaparib), which were ongoing at the time of visit cutoff (PMID: 32086346; NCT02952534). | 32086346 |
| BRIP1 inact mut | prostate cancer | predicted - sensitive | Abiraterone + Niraparib + Prednisone | Phase III | Actionable | In a Phase III trial (MAGNITUDE), Zejula (niraparib) in combination with Zytiga (abiraterone) and Adasone (prednisone) (AAP) improved radiographic progression-free survival (HR 0.59) compared to placebo and AAP in patients with metastatic castration-resistant prostate cancer harboring inactivating mutations in the homologous recombination repair (HRR)-Fanconi pathway (BRIP1, FANCA, PALB2), with a HR of 0.23 in patients with BRIP1 mutations (J Clin Oncol 40, no. 16_suppl (June 01, 2022) 5020; NCT03748641). | detail... |
| BRIP1 mutant | ovarian cancer | not applicable | N/A | Guideline | Risk Factor | Germline BRIP1 mutations are associated with increased risk of developing ovarian cancer (NCCN.org). | detail... |