A total of 75 participants will be enrolled in the study, with 25 participants allocated per intervention group. In Group 1, participant will take 50 mg cabazitaxel every week for 6 cycles (3 doses per cycle), 10 mg prednisone daily till the end of cycle 6. In Group 2, participant will take 100 mg cabazitaxel every week for 6 cycles (3 doses per cycle), 10 mg prednisone daily till the end of cycle 6. In Group 3, participant will take 200 mg cabazitaxel every 3 weeks for 6 cycles (1 doses per cycle), 10 mg prednisone daily till the end of cycle 6.
The study comprises three phases: a 21-day screening phase, an 18-week intervention phase starting on Day 1 (baseline), and a post-intervention follow-up phase lasting up to 12 months from Day 1. The total duration of participation for each individual will be approximately one year.
Key efficacy assessments include CT scans/MRI, bone scans, PSA, ALP, LDH, symptomatic skeletal events, and pain evaluations. Key safety assessments encompass the monitoring of adverse events (AEs), ECOG performance status, physical examinations, vital sign measurements, clinical laboratory tests, peripheral neuropathy evaluation, 12-lead ECG, and echocardiogram (ECHO) assessments.
Pharmacokinetic parameters will also be evaluated.