Clinical Trials — A Closer Look. The Food and Drug Administration (FDA) is the main consumer watchdog for numerous products: Drugs and biologics (prescription.

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Presentation transcript:

Clinical Trials — A Closer Look

The Food and Drug Administration (FDA) is the main consumer watchdog for numerous products: Drugs and biologics (prescription and over-the counter) Food Medical devices Animal feed and drugs Cosmetics Radiation-emitting products (such as cell phones and pagers)

Clinical Trials — A Closer Look Human studies designed to distinguish a drug’s effect from other influences. Drugs must be thoroughly analyzed and tested in animal models BEFORE they are tested in humans.

Clinical Trials — A Closer Look Pre-clinical testing Pre-clinical studies help establish boundaries for safe use of the treatment if/when human studies begin….no humans tested yet! Many new drugs and treatments are abandoned at this step because they are proven unsafe.

Clinical Trials — A Closer Look Clinical research and development The application to the FDA to request permission to begin human testing is called an Investigational New Drug application, or IND. The IND permits the use of an investigational new drug for the sole purpose of conducting clinical trials….with people!

Clinical Trials — A Closer Look Phase 1 clinical trials Drug is tested for its interaction with the human body. Trials are conducted to determine the appropriate dose range with regard to safety and toxicity (NOT efficacy…if it is effective). Trials are conducted on a limited number (20-80) of normal volunteers or patients (such as patients with cancer or AIDS).

Clinical Trials — A Closer Look Phase 1 clinical trials Phase 1 trials often take nine to 18 months to complete.

Clinical Trials — A Closer Look Phase 2 trials Small-scale, well-controlled trials evaluate the preliminary safety AND efficacy in 100 to 300 patients with the disease or condition to be treated.

Clinical Trials — A Closer Look Phase 2 trials Often take one to three years to complete.

Clinical Trials — A Closer Look Phase 3 trials The most extensive (and expensive) testing of a drug. These trials fully assess safety, efficacy and drug dosage in a large group of patients with the specific disease to be tested.

Clinical Trials — A Closer Look Phase 3 trials Conducted on larger (100s to 1000s) and more diverse groups of patients with the condition….2 to 5 years to complete.

Clinical Trials — A Closer Look New Drug Application (NDA) By law, the FDA has 60 days to decide if there is enough information to continue with the NDA review. By law, the FDA is required to make a final decision within 180 days. In practice this timeframe often is lengthened (considerably) by mutual agreement.

Clinical Trials — A Closer Look Phase 4 clinical trials Phase 4 trials may be performed to learn more about side effects and long-term risks and benefits.

Clinical Trials — A Closer Look A typical timetable from test tube to patient R&D and pre-clinical3.5 years Phase 11.0 years Phase 22.0 years Phase 33.0 years NDA evaluation2.5 years Total 12.0 years