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PMID (34818649)
Authors Wang L, Lu Q, Jiang K, Hong R, Wang S, Xu F
Title BRAF V600E Mutation in Triple-Negative Breast Cancer: A Case Report and Literature Review.
Journal Oncology research and treatment
Vol
Issue
Date 2021 Nov 24
URL
Abstract Text The B-Raf proto-oncogene (BRAFV600E) gene mutation has been identified in a variety of malignancies, but no evidence of the efficacy of vemurafenib treatment in BRAFV600E mutant breast cancer (BC) has been reported.We reported a 60-year-old woman with confirmed triple-negative BC with BRAFV600E mutation. Progression-free survival (PFS) for first-line chemotherapy was 7 months. The patient received vemurafenib and albumin-bound paclitaxel as second-line therapy, exhibiting regression of some pulmonary metastatic lesions with concomitant progression of other lesions, and achieved 4.4 months of PFS. Genetic testing of the progressed pulmonary lesion revealed the BRAFV600E mutation, and acquired new mutations and AR amplification. The patient ultimately died of multiple organ failure and achieved 12 months of overall survival.The BRAFV600E mutation may be a potential prognostic factor and therapeutic target for BC.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
BRAF V600E triple-receptor negative breast cancer predicted - sensitive Nab-paclitaxel + Vemurafenib Case Reports/Case Series Actionable In a clinical case study, Zelboraf (vemurafenib) and Abraxane (nab-paclitaxel) combination treatment resulted in regression of some metastatic pulmonary lesions and a progression-free survival of 4.4 months in a patient with triple-negative breast cancer harboring BRAF V600E, but a biopsy in lesions that progressed showed acquisition of additional mutations in PDGFRB, NF2, GRM3, MLH1, FOXA1, LRP1B, and AR amplification (PMID: 34818649). 34818649