Immunotherapy is the prevention or treatment of a disease by stimulating, enhancing, desensitizing, or suppressing the immune response with the help of substances. If the immune response is amplified or induced, it is called an activation immunotherapy. If the immune response is being suppressed or reduced, then it is termed as a suppression immunotherapy.
The substances used for immunotherapy are called biological response modifiers (BRMs). BRMs can be prepared in large quantities in laboratories for treatment as the human body produces low volume of BRMs when it encounters infections and disease. This therapy is employed in the treatment of diseases like cancer, Crohn’s disease, hepatitis C, and rheumatoid arthritis. It has gained prominence among researchers, clinicians, pharmaceutical companies and biopharmaceutical firms as a promising treatment for various forms of cancer.