Clinical trials and research studies help evaluate a variety of factors related to a medication or treatment. These factors include safety, effectiveness, possible side effects, dosage measurement, and even if certain patients are more likely to respond to a treatment compared to others.
Every medication and treatment available today was, at some point, studied as part of a clinical trial. Without research, and the remarkable patients who choose to join these studies, innovative new treatment options like CAR-T and other immunotherapies would not be available today.