Detection of COX-2 in liquid biopsy in patients with breast cancer.

Aims: To determine the expression of the cyclooxygenase-2 () gene in patients with breast cancer attended at the Centro Universitário Saúde ABC/Faculdade de Medicina do ABC (CUS-ABC/FMABC) outpatient clinic. Breast cancer is the most common cancer in women worldwide. More than two million new cases are reported annually.