• Puma Biotechnology has started the ALISCA-Breast1, a Phase 2 clinical trial, to evaluate alisertib plus endocrine therapy for HR-positive, HER2-negative metastatic breast cancer.
• The trial aims to determine the optimal dose of alisertib in combination with endocrine therapy, assessing objective response rate, duration of response, and progression-free survival.
• Approximately 150 patients who have previously received CDK4/6 inhibitors and at least two lines of endocrine therapy will be enrolled and randomized into three alisertib dosage groups.
• Initial data from the ALISCATM-Breast1 trial is expected in 2025, with plans for a Phase 3 study contingent on defining the optimal dose and discussions with the FDA.