The immune system fights both infection and cancer. When cancer cells evade the immune system, the patient's T-cells, which are part of the immune system, can be genetically engineered to fight the cancer cells. This is called CAR T cell therapy.

Bone marrow and peripheral blood stem cell transplants are a potential cure for many people with a life-threatening disease. Family members may be tested to determine if they can donate bone marrow or peripheral blood stem cells (PBSCs) to a relative who needs a transplant. This presentation reviews the procedures, risks, benefits and safety of donating bone marrow or PBSCs to a relative.