What is Cancer antigen 15.3?
Cancer antigen 15.3 (CA 15.3), a protein produced by normal breast cells, is used as a biomarker to monitor cancerous breast tumors. It helps in determining the effectiveness of treatment and disease recurrence. Normal levels of Cancer antigen 15.3 (CA 15.3) protein are produced by breast cells, however, increased production is observed in the case of breast cancer. CA 15.3 levels are also elevated in individuals with other cancers or diseases, such as colorectal cancer, lung cancer, cirrhosis, Hepatitis, and Benign Breast Disease.
Oncologist, General physician, General Medicine