Zeno Alpha, Inc.

This is a Phase 1b, open-label, multicenter, dose-escalation study to evaluate the safety, tolerability, pharmacokinetics (PK), and preliminary efficacy of ZN-c5 administered orally in combination with abemaciclib (VERZENIO®) in participants with advanced estrogen-receptor positive, human epidermal growth factor receptor-2 negative (ER+/HER2-) breast cancer.

This is a single-center, randomized, open-label, two-period, 2-way crossover food effect study to determine the comparative bioavailability of ZN-c5 under fed and fasting conditions, following single-dose administration of ZN-c5 capsules (150mg).