- Patient has received anticancer therapy including chemotherapy, immunotherapy, radiotherapy, hormonal, biologic, or any investigational therapy or loco-regional therapy within a period of 21 days prior to Study Day 1 (6 weeks for nitrosureas or mitomycin C). Prior and concurrent use of hormone replacement therapy, use of gonadotropin-releasing hormone modulators for prostate cancer, and use of somatostatin analogues for neuroendocrine tumours are permitted.