CA 27-29: A Valuable Marker for Breast Cancer Management in Correlation with CA 15-3

Abstract

Background: Breast cancer is the most common invasive cancer in women, and second main cause of
cancer death in women after lung cancer. Tumor markers that showed evidence of clinical utility and were
recommended for use in practice include CA15-3, CA27-29 and Carcinoembryonic.
Aim of the study: This study was designated to measure the levels of CA15-3, CA27-29 and CEA and
evaluate their clinical significance in metastasis and non- metastasis patients with breast carcinoma,
comparing their sensitivity and specificity.
Patients, Materials and Methods: Serum levels of (CA27-29) and (CA15-3) were measured in 62 patients
(40 in non-metastasis and 22 in metastasis patients). The age of patients was from (30 to 90) years old.
Samples were collected from the Oncology Teaching Hospital in Baghdad Medical City.
Results: The levels of CA15-3, CEA were significantly higher in metastasis group compare to non-metastasis
group. while the levels of CA27-29 were no statically significant difference between the two groups.
Conclusion: In this study, measurement of CA15-3 and CEA correlated with disease activity especially
in the metastatic setting. on the contrary, CA27-29 did not show such clear correlation. CA15-3 was more
sensitive in follow up of breast cancer patients followed by CEA and then CA27-29.