5.1. Prostate-specific antigen (PSA) progression defined as a minimum of 2 rising PSA levels with a minimum of a 1-week interval between each determination. A minimum PSA of 1.0 ng/mL is required for study entry.
5.2. Soft-tissue progression defined as an increase ≥20% in the sum of the longest diameter (LD) of all target lesions based on the smallest sum LD since treatment started or the appearance of one or more new lesions. 5.3. Progression of bone disease (measurable disease) or 2 or more new bone lesions by bone scan.