You must be able to follow the study rules. Before you enter the study, the medical team will make sure that you can take part by asking you questions about your health, performing an exam, or doing lab tests. After you enter a trial, you will need to go back to the doctor's office or clinic for regular check-ups. During these visits, the doctor or nurse will check how you are doing and see if you are having any side effects. If you don't have any problems with taking the treatment, you will continue taking your assigned treatment until the end of the study.
Some studies can last several years.
For most studies, you will be followed for a lifetime. If you decide that you no longer want to take part in the study, you can stop. Just be sure to tell the research coordinator if there are any changes in your treatment schedule. His associates are other physicians who have access to the study. The research nurse - the person who manages your case while you are on the study, may educate you about the study, and helps to manage symptoms.