Pantarhei Oncology BV

This is a phase IIa, double-blind, randomised, placebo-controlled, multi-center study to evaluate the effects of estetrol on testosterone suppression and quality of life in prostate cancer patients treated with an LHRH agonist. Patients will be treated with estetrol or placebo for 6 months.

This is a multi-center, open-label, phase I/IIa trial, dose-escalation study with a 3 + 3 cohort design to determine the recommended dose of estetrol for the treatment of patients with advanced breast cancer. After completing phase I part of the study (i.e. 4 weeks of treatment), patients will receive further treatment for 8 weeks at their individual phase I dose level (phase IIa part of the study).

The current study is designed as a phase Ib multiple dose study to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of E4 in healthy men after daily oral administration for 28 days.