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A volunteer subject with no known significant health problems who participates in research to test a new drug, device or intervention. These volunteers are recruited to serve as controls for patient groups. Healthy volunteers receive the same test, procedure, or drug the patient group receives.

Study phase

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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.

Search Results 761-770 of 2032 for surgery

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  1. Obeticholic Acid (OCA) In Primary Sclerosing Cholangitis (PSC)

    Scottsdale/Phoenix, AZ

  2. A Study Of Endometriosis Biomarkers

    Scottsdale/Phoenix, AZ

  3. A Study Of Sonodynamic Therapy With SONALA-001 And Exablate 4000 Type 2.0 In Subjects With Progressive Or Recurrent Glioblastoma Multiforme (RGBM)

    Rochester, MN

  4. Colchicine and CRP in Atrial Fibrillation and AF Ablation

  5. Mild Hip Dysplasia

    Rochester, MN

  6. Electron Beam Intraoperative Radiation Therapy Following Chemoradiation In Patients With Pancreatic Cancer With Vascular Involvement (PACER)

    Jacksonville, FL, Rochester, MN

  7. A Randomized Study of Approaches in Total Hip Arthroplasty

    Rochester, MN

  8. Prospective Study To Compare The Efficacy Of E.G.Scan To Detect Barrett's Esophagus Compared With Standard Endoscopy

    Rochester, MN

  9. PKCι & MTOR Inhibition With Auranofin+Sirolimus For Squamous Cell Lung Cancer

    Scottsdale/Phoenix, AZ, Jacksonville, FL

  10. A Study to Evaluate Autologous Adipose Derived Mesenchymal Stem Cells to Treat Spinal Cord Injury Patients

    Rochester, MN

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