Immediate Versus Deferred Androgen Deprivation Therapy,Goserelin for Recurrent Prostate Cancer After Radical Radiotherapy

This is a prospective, multicentre, open-labelled, randomized controlled trial comparing the efficacy of immediate versus deferred androgen deprivation therapy (ADT) using goserelin (Zoladex®) in men with recurrent prostate cancer after radical radiotherapy. 1100 patients will be accrued from participating Canadian Urological Oncology Group sites in an estimated time of 3 years. First analysis is planned for 7 years after study recruitment is completed.