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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.

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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 291-300 of 2028 for surgery

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  1. Bentracimab (PB2452) In Ticagrelor-treated Patients With Uncontrolled Major Or Life-Threatening Bleeding Or Requiring Urgent Surgery Or Invasive Procedure

    Jacksonville, FL

  2. A Study of to Evaluate Palbociclib in Combination With Letrozole and Trastuzumab in Stage II-III ER+ HER2+ Breast Cancer

    Scottsdale/Phoenix, AZ

  3. Pragmatic Randomized Trial of Proton vs. Photon Therapy for Patients With Non-Metastatic Breast Cancer: A Radiotherapy Comparative Effectiveness (RADCOMP) Consortium Trial

    Scottsdale/Phoenix, AZ

  4. Testing The Role Of DNA Released From Tumor Cells Into The Blood In Guiding The Use Of Immunotherapy After Surgical Removal Of The Bladder, Kidney, Ureter, And Urethra For Urothelial Cancer Treatment, MODERN Study

    Scottsdale/Phoenix, AZ, Jacksonville, FL

  5. Hydroxocobalamin as a New and Possibly Superior Treatment for Refractory Vasoplegic Syndrome during Liver Transplant Surgery

    Jacksonville, FL

  6. A Study Of The Use Of Platelet Rich Plasma During Radical Prostate Removal Surgery

    Rochester, MN

  7. Genetic Testing in Screening Patients with Stage IB-IIIA Non-small Cell Lung Cancer That Has Been or Will Be Removed by Surgery (The ALCHEMIST Screening Trial)

    Rochester, MN, Scottsdale/Phoenix, AZ

  8. Dose-Escalated Photon IMRT Or Proton Beam Radiation Therapy Versus Standard-Dose Radiation Therapy And Temozolomide In Treating Patients With Newly Diagnosed Glioblastoma

    Scottsdale/Phoenix, AZ, Rochester, MN

  9. Pembrolizumab, Combination Chemotherapy, And Radiation Therapy Before Surgery In Treating Adult Patients With Locally Advanced Gastroesophageal Junction Or Gastric Cardia Cancer That Can Be Removed By Surgery

    Scottsdale/Phoenix, AZ, Rochester, MN

  10. A Study of Apalutamide in Participants With High‑Risk, Localized or Locally Advanced Prostate Cancer Who Are Candidates for Radical Prostatectomy

    Jacksonville, FL

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