Radiotherapy Combined With Fluzopanib and Abiraterone Acetate Tablets (II) Treatment for mCRPC

Induction therapy, fluzoparib (150mg BID orally), abiraterone acetate tablets (II) (300mg QD orally), and prednisone (5mg BID orally). IMRT was administered as follows: For patients with low metastatic burden tumors: Prostate ± pelvic lymph node radiation + metastatic lesion radiation.For patients with non-low metastatic burden tumors: Prostate±pelvic lymph node radiation.IMRT dosage:Prostate: 70 Gy in 28 fractions (2.5 Gy/fraction, 5 fractions per week).Pelvic lymph nodes: 50.4 Gy in 28 fractions (1.8 Gy/fraction, 5 fractions per week).Fluzoparib and abiraterone acetate (II) were administered concurrently with radiotherapy. Maintenance treatment,patients received the same doses of fluzoparib,abiraterone acetate (II), and prednisone. Each treatment cycle lasted 28 days.