What is a clinical trial of a new drug? A clinical trial of a new drug is a well-designed, prospective, systematic medical study to confirm whether a new drug is safe for use in humans and whether it can achieve the desired therapeutic effect. The conduct of clinical trials facilitates medical progress and provides patients with more advanced diagnostic and treatment tools. How many phases are there in a clinical trial? Clinical trials are usually divided into four phases, namely Phase I, Phase II, Phase III and Phase IV. Phase I clinical trials focus on exploring the safety and drug metabolism characteristics of a new drug; Phase II clinical trials focus on evaluating the therapeutic effect of a new drug on a particular tumor; Phase III clinical trials focus on evaluating whether the new drug is more effective or has fewer side effects compared to existing treatments; and Phase IV clinical studies focus on observing and evaluating the safety of the drug during its use in a large number of people after it has been marketed. What we usually call new drug clinical trials are mainly Phase I-III, which are clinical studies before new drugs are marketed. What are the benefits of participating in a new drug clinical trial? 1. To obtain a new treatment: The treatment carried out in clinical trials often belongs to one of the most advanced treatment strategies, representing a higher level of current medical development, and may be more effective or have lower side effects than the existing treatment, and the use of new drugs often brings new treatment hope to tumor patients, so that patients can obtain a treatment that may be more advanced and effective than the current treatment. 2. Saving certain medical costs: Most of the drugs used by patients in clinical trials are completely or partially free of charge, and some clinical studies can also provide appropriate reductions or exemptions for examination costs, which to some extent reduce the heavy medical burden of patients; some of these new drugs have been widely used abroad, and currently it is difficult to obtain real drugs in China, and they are expensive, and during domestic clinical trials these new drugs are often These new drugs are often given away completely or partially free of charge by the original manufacturer, which ensures the quality of the drugs on the one hand, and saves a lot of money on the other. 3, access to the best medical services: strict clinical trials require relatively fixed professional doctors to consult and treat patients, and this consultation requires strict compliance with medical norms, requiring doctors to closely monitor the changes in patients’ conditions and requiring doctors to follow up patients’ conditions for a long time. After the clinical trial, patients tend to develop close cooperation with doctors and become friends, and get more detailed and professional medical services. 4.Patients’ rights are legally protected: According to the relevant national laws and regulations, formal clinical trials must be reviewed and approved by the State Food and Drug Administration, the entire research process should be supervised by a special ethics committee, any risks will be informed in advance, subjects have the right to withdraw from the clinical trial at any time, and appropriate compensation can be obtained in case of physical injury related to the trial drug. All these ensure that the legitimate rights of patients are protected. What are the risks of participating in a clinical trial of a new drug? 1. The expected therapeutic effect may not be achieved: Although the new drug used is theoretically well designed and based on various preclinical animal experiments, some of the therapeutic effects seen in experimental animals have different reactions in humans, i.e. some patients do not achieve the expected clinical effect. 2, some side effects may occur: just as any drug may have certain side effects, the use of new drugs in clinical trials may also have some side effects, and some side effects are unknown, some are mild, some may be serious. But every rigorous clinical trial requires the physician in charge to monitor the patient closely, to be well prepared, and to actively manage any side effects that may occur. How can I find out about the right clinical trial for me? Patients can obtain information about a clinical trial through the Internet, their doctor, or a patient’s friend, and then consult with the doctor in charge of the trial to find out if the trial is appropriate for their condition and whether it will benefit them. Only hospitals that have been audited by the State Food and Drug Administration and have a specific level of human resources and instruments are qualified to conduct clinical trials of new drugs, and only such hospitals can legally protect the medical treatment and rights of patients.