The risks and benefits of participating in a clinical trial are described in the research protocol and the informed consent document. The medical team also explains them to the patient, who is free to ask questions.
Participating in a clinical trial gives access to an innovative treatment before it is potentially widely available. Clinical trials also provide a specific frame of care and support, as well as an appropriate and rigorous follow-up during and after the completion of the treatment.
As with any treatment, drug candidates used in clinical trials can cause side effects. In some clinical trials, it is also possible to be part of the control group and not receive innovative treatment.