ADT +/- Darolutamide in de Novo Metastatic Prostate Cancer Patients With Vulnerable Functional Ability (PEACE6-Vulnerable)

This is a Phase III, international, multicentre, randomised, double-blinded placebo controlled trial, evaluating the efficacy and safety of ADT +/- darolutamide in castration-naïve de novo metastatic prostate cancer patients with vulnerable functional ability who have not elected for docetaxel or other androgen receptor pathway inhibitors. The study plans to enroll 300 patients who will be randomized (1:1) to receive either: (i) Experimental arm: ADT + darolutamide 600 mg po bid, or (ii) Control arm: ADT + placebo po bid. Response to treatment will be assessed according to the Prostate Cancer Clinical Trials Working Group 3 (PCWG3) criteria (Scher, 2016). Treatment will be continued until radiographic disease progression. Treatment may also be terminated at the initiative of either the patient or the investigator for any reason that would be beneficial to the patient, including: unacceptable toxicity, intercurrent conditions that preclude continuation of treatment, or patient request. Following treatment discontinuation patients will enter the follow-up period and will be monitored for up to 10 years with regards to survival status, subsequent antineoplastic treatments and the status of ongoing adverse events (AEs) and/or new investigational product related AEs.