NCI Clinical Trials (National Cancer Institute, National Institutes of Health)
Centerwatch trial listing (industry-sponsored trials)
NLM ClinicalTrials (National Library of Medicine, National Institutes of Health)
OncoLink Trial Matching and Referral Service (with links to other clinical trials)
International
Federation of Pharmaceutical Manufacturers & Associations (IFPMA) Clinical
Trials Portal
"This portal has been designed as a single entry allowing
you to search for comprehensive information on on-going clinical trials
(registry) or results of completed trials (database) conducted by the innovative
pharmaceutical industry."