What are some recommended prophylactic medications?

What are some recommended prophylactic medications?
How have allo transplants spurred a revolution in immunotherapy in myeloma?
BETA - Is there any advantage of using a CAR vs a TCR or vice versa?
BETA - Are the side effects from TCR -therapy similar to CAR-T cell therapy?
BETA - Does it take as long to manufacture a TCR as it does a CAR-T cell?
BETA - Is the process of using TCR and CAR-T cells similar? What is the difference between a CAR-T and a TCR-T?