The second type is Therapeutic Trials, in which new drugs or treatments are tested. These trials are conducted after preliminary tests on animals have led researchers to believe that the new therapy is useful and not harmful. However, since no humans have been treated, they cannot be certain. This type of study offers the possibility of personal benefit from participation. But it also exposes you to some degree of risk.
Family support is also important.
Therapeutic trials establish whether the treatment show enough promise to justify the larger randomized studies that are the next step. The third step comes after the initial trials have been successfully completed. It is randomized, controlled, double blind trials. The Food and Drug Administration requires evidence that the new therapy is both safe and effective. This requires testing on a larger population.