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Clinical trial phase - FACILITATE

Clinical trial phase

A clinical trial phase is a part of the clinical research process that answers specific questions about whether treatments or other interventions that are being studied work and are safe.

  • Phase I (Non -therapeutic, first-in-human) trials test the best way to give a new treatment and the best dose. It involves <50 participants
  • Phase II (Exploratory) trials test whether a new treatment influences the disease. It involves 5-100 patients of either sex
  • Phase III (Confirmatory) trials compare the results of people taking a new treatment with the results of people taking the standard treatment. It involves more than 300 patients (up to 3.000) of either sex
  • Phase IV (Post-approval) studies are done using thousands of people after a treatment has been approved and marketed, to check for side effects that were not seen in the phase III trial.

National Institute of Health (NIH)-National Cancer institute

https://www.cancer.gov/publications/dictionaries/cancer-terms/def/clinical-trial-phase#:~:text=Phase%20I%20trials%20test%20the,people%20taking%20the%20standard%20treatment

Adapted from Venkataramana K, Vadakedath S. Clinical Trials and Clinical Research: A Comprehensive Review. Cureus 2023 Feb; 15(2): e35077

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