Am I obliged to take part in a clinical trial?
No. It is a free decision. All the information about the study and the new drug will be given to you so that you can read it and study it. In case you decide to join, and if you are over 12 years old, you must sign a document saying that you agree. This document is called informed assent.
Your parent or legal guardian must also sign another document, which is identified by the name of informed consent.
Even if you have signed the documentation to be part of the clinical trial, you are free to change your mind at any time and decide to leave the study.
If you decide not to join or you want to suspend your participation once the study has begun, it will not affect you at any level and no one will be bothered about it.