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Frequently Asked Questions
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What are clinical trials?
A clinical trial is a research study to respond specific questions about new drugs, new therapies or new ways of using known treatments. Clinical trials (also called medical research and research studies) are used to determine if new drugs or treatments are both safe and effective. Well-administrated clinical trials are the fastest and safest way to find a reliable treatment.
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What are the different types of clinical trials?
Clinical trials test new drugs, new approaches to surgery or radiation therapy or new combinations of drugs. Screening trials test the best way to detect certain illness, or health conditions. Prevention trials look for better ways to prevent disease in people who have never had the disease or to prevent a disease from reoccurring. Quality of Life trials (or Supportive Care trials) investigate ways to improve comfort and the quality of life for patients with chronic diseases.
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What are the phases of clinical trials?
Clinical trials are conducted in phases. A new drug or treatment are tested in a group of people (10–90) for the first time to evaluate its safety, check a safe dosage range, and identify potential side effects in Phase I trials. In Phase II trials, the drug or treatment is given to a larger group of people (80–400) to found out whether it is effective and to further evaluate its safety. In Phase III trials, groups of people (more then 500), are given the study drug or treatment to verify its effectiveness, monitor side effects, compare it to ordinary used treatments, and collect information that will permit the drug or treatment to be used safely. In Phase IV trials, post marketing studies describe an extra information including the drugs benefits risks ratio, adverse events and optimal usage.
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