Resources » How New Therapies Get Tested in Clinical Trials

Year: 2022

Language: English

This resource is also available in: Arabic French Russian Spanish

Author(s): World Federation of Hemophilia

Format: Document

How New Therapies Get Tested in Clinical Trials


For a drug to become a treatment that doctors can prescribe, it must first be tested in a series of clinical trial phases, and then assessed and approved by a regulatory agency. Each clinical trial phase has a purpose, and the phases progress in order from Phase 1 to Phase 4.

The WFH does not engage in the practice of medicine and under no circumstances recommends particular treatment for specific individuals. For diagnosis or consultation on a specific medical problem, the WFH recommends that you contact your physician or local treatment centre. Before administering any products, the WFH urges patients to check dosages with a physician or hemophilia centre staff, and to consult the pharmaceutical company’s printed instructions.

The WFH does not promote any particular pharmaceutical product and any mention of any commercial brand in this presentation is strictly for educational purposes.