Phase III TROPiCS-02 study of Trodelvy meets primary endpoint in HR+/HER2- metastatic breast cancer.- Gilead Sciences

The study met its primary endpoint with a statistically significant improvement in progression-free survival (PFS) versus physician’s choice of chemotherapy. The trial targeted a 30% reduction in the risk of disease progression or death. The primary endpoint results were consistent with those observed in the Phase I/II IMMU-132-01 study in a subset of HR+/HER2- metastatic breast cancer patients.

The first interim analysis of the key secondary endpoint of overall survival in the TROPiCS-02 study demonstrated a trend in improvement for overall survival. Patients will be followed for a subsequent overall survival analysis. The safety profile for Trodelvy was consistent with prior studies, and no new safety concerns emerged in this patient population. Detailed results from TROPiCS-02 will be presented at an upcoming medical conference.

The TROPiCS-02 study is a global, multicenter, open-label, Phase III study, randomized 1:1 to evaluate Trodelvy versus physician’s choice of chemotherapy (eribulin, capecitabine, gemcitabine, or vinorelbine) in 543 patients with HR+/HER2- metastatic breast cancer who were previously treated with endocrine therapy, CDK4/6 inhibitors and two to four lines of chemotherapy. The primary endpoint is progression-free survival per Response Evaluation Criteria in Solid Tumors (RECIST 1.1) as assessed by blinded independent central review for participants treated with Trodelvy compared to those treated with chemotherapy. The trial targets a 30% reduction in the risk of disease progression or death and is powered to detect a statistically significant difference of at least 0.9 months in median PFS. Secondary endpoints include overall survival, duration of response, clinical benefit rate and overall response rate as well as assessment of safety and tolerability and quality of life measures.