Biological Therapy

Some people with colorectal cancer that has spread receive a monoclonal antibody, a type of biological therapy. Monoclonal antibodies interfere with cancer cell growth and the spread of cancer. People receive monoclonal antibodies through a vein at the doctor's office, hospital or clinic. Some people receive chemotherapy at the same time.

During treatment, your health care team will watch for signs of problems. Some people get medicine to prevent a possible allergic reaction. The side effects depend mainly on the monoclonal antibody used. Side effects may include rash, fever, abdominal pain, vomiting, diarrhea, blood pressure changes, bleeding or breathing problems. Side effects usually become milder after the first treatment.

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