Safety and Efficacy of Cabazitaxel in Pediatric Patients With Refractory Solid Tumors Including Central Nervous System Tumors

Primary Objectives: Phase 1 Part: To determine the dose limiting toxicity (DLT) and the maximum tolerated dose (MTD) of cabazitaxel as a single agent in pediatric participants with recurrent or refractory solid tumors including tumors of the central nervous system. Phase 2 Part: To determine the objective response rate (complete and partial response) and the duration of response to cabazitaxel as a single agent in participants with recurrent or refractory high grade glioma (HGG) or diffuse intrinsic pontine glioma (DIPG). Secondary Objectives: Phase 1 Part: To characterize the safety and tolerability of cabazitaxel in participants with recurrent or refractory solid tumors including tumors of the central nervous system. To characterize the pharmacokinetic (PK) profile of cabazitaxel in participants with recurrent or refractory solid tumors including tumors of the central nervous system. To evaluate preliminary anti-tumor activity that may be associated with cabazitaxel in participants with recurrent or refractory solid tumors including tumors of the central nervous system. Phase 2 Part: To characterize the safety and tolerability of cabazitaxel in participants with recurrent or refractory HGG or DIPG. To estimate progression free survival in participants with recurrent or refractory HGG or DIPG. To estimate overall survival in participants with recurrent or refractory HGG or DIPG. To characterize the plasma PK profile of cabazitaxel in participants with recurrent or refractory HGG or DIPG.