Immunotherapy strengthens the immune system of the body to fight against cancer cells. It either stimulates the immune system or makes the cancer cells more vulnerable to attack by immune cells. It may be used alone to treat some cancers. However, a combination of immunotherapy with other treatment options is more effective for other cancer types."Medical Oncology"
The side effects of immunotherapy are relatively less severe compared to conventional chemotherapy due to its increased specificity towards cancer cells. The side effects of immunotherapy are bowel alterations, loss of appetite, fatigue, weight loss, fever, nausea, chills, and pain or swelling at the injection site.
In this technique, T-cells are obtained from the blood of the patients. These cells are engineered to be more effective against cancer. These engineered cells are allowed to multiply and infuse into the patient's blood.