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Brief Title: Investigation of Metformin in Patients With Castration Resistant Prostate Cancer in Combination With Enzalutamide vs. Enzalutamide Alone
Official Title: Investigation of Metformin in Patients With Castration Resistant Prostate Cancer in Combination With Enzalutamide vs. Enzalutamide Alone (IMPROVE TRIAL): A Randomized, Open Label, Phase II Trial
Study ID: NCT02640534
Brief Summary: The purpose of this trial is to test if the combination of enzalutamide and metformin in patients with castration resistant prostate cancer CRPC progressing on androgen deprivation therapy ADT is more effective compared to enzalutamide alone. The half of the patients will receive the experimental treatment combination, enzalutamide and metformin, while the other half will receive enzalutamide alone.
Detailed Description: One in seven men will be diagnosed with cancer of the prostate during his lifetime . Accordingly, prostate cancer (PC) is the most common cancer amongst men in the western world and worldwide. PC ranks second in cancer incidence and sixth in cancer mortality in men. The current standard of care for patients with metastatic castration resistant prostate cancer (mCRPC) and disease progression is either treatment with abiraterone acetate and prednisone in asymptomatic or mildly symptomatic patients without visceral metastases, or treatment with docetaxel in more symptomatic patients and in the presence of visceral metastases. Rothemundt et al. previously demonstrated favorable effects of metformin in a phase II trial: it yields objective Prostate specific antigen PSA responses and may induce disease stabilization and improve metabolic endpoints in patients with CRPC. Therefore addition of metformin to enzalutamide might have positive impact on tumor progression, on body composition, and insulin sensitivity.
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: MALE
Healthy Volunteers: No
Kantonsspital Aarau, Aarau, , Switzerland
Universitaetsspital Basel, Basel, , Switzerland
Istituto Oncologico della Svizzera Italiana (IOSI), Bellinzona, , Switzerland
Kantonsspital Graubuenden, Chur, , Switzerland
Spital Thurgau AG, Frauenfeld, , Switzerland
Hôpitaux Universitaires de Genève, Genève 14, , Switzerland
CCAC Lausanne, Lausanne, , Switzerland
Luzerner Kantonsspital, Luzern 16, , Switzerland
Hôpital du Valais, Martigny, , Switzerland
Kantonsspital Olten, Olten, , Switzerland
Hôpital du Valais, Sion, , Switzerland
Bürgerspital Solothurn, Solothurn, , Switzerland
Kantonsspital St. Gallen, St. Gallen, , Switzerland
Kantonsspital Winterthur, Winterthur, , Switzerland
Stadtspital Triemli, Zürich, , Switzerland
UniversitätsSpital Zürich, Zürich, , Switzerland
Name: Christian Rothermundt, MD
Affiliation: Cantonal Hospital of St. Gallen
Role: STUDY_CHAIR