Some people like to get a second opinion about whether they should join a study, particularly if it is a clinical trial. A second opinion can confirm or clarify your doctor’s recommendations and reassure you that you have thought about the different issues that might affect you.
Ask your GP for a referral to another cancer specialist, but be mindful that you may have to wait some weeks for an appointment and it will cost you extra money. You may be able to talk to another specialist on the hospital ward. Ask your cancer specialist if this is possible.