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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 1-5 of 5 for Colon and Rectal Surgery

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  • Study status: Open/Status Unknown
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  1. Chemotherapy Alone or Chemotherapy Plus Radiation Therapy in Treating Patients with Locally Advanced Rectal Cancer Undergoing Surgery

    Scottsdale/Phoenix, AZ, Rochester, MN, Scottsdale/Phoenix, AZ, Rochester, MN

  2. A Study to Determine the Feasibility of Transanal Robot-assisted Resection of Distal Colorectal Lesions Using the Medrobotics Flex® System

    Rochester, MN

  3. Time Longitudinal Study of the Microbiome in Colorectal Cancer Subjects

    Rochester, MN

  4. A Study to Examine Financial Distress in Patients Undergoing Treatment of Locally-advanced Rectal Cancer

    Scottsdale/Phoenix, AZ

  5. A Time Study of the Microbiome in Colorectal Cancer Subjects

    Rochester, MN

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