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During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

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  1. A Study to Determine if Oral Glucose Tolerance Testing can Improve Screening Compliance in Cystic Fibrosis

    Rochester, MN

  2. A Study to Evaluate the Effectiveness and Safety of Remdesivir to Treat Coronavirus Disease 2019 in an Outpatient Setting

    Rochester, MN

  3. A Study to Establish a Cystic Fibrosis Patient Registry for Mayo Clinic Jacksonville, Fl

    Jacksonville, FL

  4. A Study to Evaluate the Prevalence of Mitochondrial DNA Mutations Associated with Toxicity to the Ear in the Cystic Fibrosis Population

    Rochester, MN

  5. A Study to Evaluate Low Dose Chest CT vs. Standard CT in Cystic Fibrosis Patients

    Rochester, MN


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