Which tumor markers are associated with breast cancer?

CA 15-3 and 27.29 are serum tumor markers specifically associated with breast cancer. These markers are often used in the monitoring and management of patients with breast cancer, particularly for assessing treatment response and detecting recurrence. Both CA 15-3 and its variant, CA 27.29, are glycoproteins that are produced by breast cancer cells, and elevated levels of these markers can indicate the presence of breast cancer or its progression.

While other markers such as CEA (carcinoembryonic antigen) can be associated with breast cancer, they are not breast-specific and can be elevated in various other cancers and conditions, which makes them less reliable for breast cancer diagnosis specifically. Therefore, the choice of CA 15-3 and CA 27.29 is the most relevant to breast cancer, as they are more specific indicators used in clinical practice compared to the other options presented in the question.