Biologic therapy for cancer uses materials made by the human body or made by cells grown in a laboratory to boost, direct, or restore the bodyís natural defenses against disease. Biological therapies that contain components of or affect the immune system are called immunotherapy. Because Herceptin is an antibody produced by cells grown in a laboratory, Herceptin is an example of an immunotherapy.
Other types of biologic therapy are called biological response modifier (BRM) therapy. Currently, BRM therapeutics are being studied in clinical trials.