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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 1-4 of 4 for Brain aneurysm

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  • Study status: Open/Status Unknown
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  1. A Study to Evaluate Clazosentan on Preventing Complications Due to the Narrowing of the Blood Vessels (Vasospasm) in the Brain Caused By Bleeding On the Surface

    Jacksonville, FL

  2. A Study of Simulated Sylvian Fissure Dissection Under Subarachnoid Hemorrhage Conditions Using a Rodent Microvascular Anastomosis Model

    Rochester, MN

  3. A Study of the Role Connective Tissue and Wound Healing Characteristics Play in Patients with Multiple Brain Aneurysms

    Rochester, MN

  4. miRNA Expression in Aneurysm Healing

    Rochester, MN

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