Safety and Pharmacokinetics of ODM-208 in Patients With Metastatic Castration-resistant Prostate Cancer

Main Inclusion Criteria:

* Written informed consent (IC) obtained.
* Male aged ≥ 18 years.
* Histologically confirmed adenocarcinoma of the prostate.
* Castration resistant prostate cancer with serum testosterone \< 50 ng/dl.
* Metastatic disease.
* Ongoing androgen deprivation therapy with GnRH analogue or antagonist, or have had bilateral orchiectomy.
* Received at least one prior line of novel hormonal androgen receptor (AR) targeted therapy (e.g. abiraterone, enzalutamide).
* ECOG performance status 0-1.
* Adequate marrow, liver and kidney function.
* Able to swallow study treatment.
* Part 1: Treatment with at least 1 line of chemotherapy or ineligibility for chemotherapy. Part 2: Treatment with at least 1 line of taxane-based chemotherapy in castration-sensitive prostate cancer (CSPC) or in CRPC.

Main Exclusion Criteria:

* History of pituitary or adrenal dysfunction.
* Known brain metastases or active leptomeningeal disease.
* Active infection or other medical condition that would make corticosteroid contraindicated.
* Poorly controlled diabetes.
* Hypotension or uncontrolled hypertension.
* Clinically significantly abnormal serum potassium or sodium level.
* Active or unstable cardio/cerebro-vascular disease including thromboembolic events.
* Prolonged QTcF interval.