Cancer Biomarkers and Tumor Markers

This applied topic focuses on the role of molecular biomarkers in the clinical management of cancer, a vital component of the curriculum for students in Clinical Biochemistry, Laboratory Science, and Medicine at the tertiary level in Zambia. You will learn the definition and classification of cancer biomarkers (diagnostic, prognostic, predictive, and for monitoring) and evaluate the features of an ideal biomarker. The module provides a detailed analysis of widely used serum tumor markers such as Prostate-Specific Antigen (PSA), Carcinoembryonic Antigen (CEA), Alpha-Fetoprotein (AFP), Human Chorionic Gonadotropin (hCG), CA 125, CA 15-3, and CA 19-9. Understanding their clinical applications—from screening and differential diagnosis to assessing prognosis, predicting therapy response, and monitoring recurrence—is essential. This knowledge directly translates to laboratory practice, guiding test selection and interpretation in oncology. For Zambian diploma and degree students, mastering tumor markers is crucial for passing clinical biochemistry examinations and for future professional competence in hospital laboratories, where these tests are routinely used to guide patient care and treatment decisions in the national fight against cancer.