Task: Answer Verification
Input (English): Question: Does the magnitude of early castration-induced primary tumour regression in prostate cancer predict clinical outcome?
Answer: Castration therapy causes primary tumour regression in most patients with advanced prostate cancer, but these primary tumour effects are not predictive for systemic disease control. Studies of early changes in metastases during hormonal therapy will probably give more predictive information for clinical outcome than further studies in primary tumours.
Output (English): no