NCT03099174: An Open Label, Phase Ib, Dose-escalation Study Evaluating the Safety and Tolerability of Xentuzumab and Abemaciclib in Patients With Locally Advanced or Metastatic Solid Tumours and in Combination With Endocrine Therapy in Patients With Locally Advanced or Metastatic Hormone Receptor-positive, HER2-, Breast Cancer, Followed by Expansion Cohorts. | TrialSignal