Medicine
Association between thymidine kinase 1 and clinicopathological high-risk features in breast cancer
Thymidine kinase 1 (TK1) is a cell-cycle-regulated enzyme involved in DNA synthesis and is closely linked to tumor cell proliferation. This study investigated whether serum TK1 concentration is associated with clinicopathological high-risk features in breast cancer (BC) and whether TK1 changes after neoadjuvant chemotherapy (NACT). This retrospective single center cohort included 410 patients with invasive BC. Serum TK1 was analyzed according to age, lymph node metastasis (LNM), histological grade, Ki-67, circulati …