The links below provide general information regarding clinical trials that you might find helpful:

https://www.cancer.gov/about-cancer/treatment/clinical-trials/questions

https://www.dtc.cancer.gov/trials/information.htm

https://www.nimh.nih.gov/health/publications/clinical-research-trials-and-you-questions-and-answers/index.shtml

https://www.nih.gov/health-information/nih-clinical-research-trials-you

http://www.feinberg.northwestern.edu/research/clinical-trials/faq.html