Combined Use of Apatinib Mesylate and Vinorelbine Versus Single Use of Vinorelbine in Triple-negative Breast Cancer

The emergence of new molecular targeted drugs provides new prospects for the treatment of advanced breast cancer; and its future therapeutic trend includes chemotherapy combined with molecular targeted therapy. Apatinib mesylate (Aitan), a novel small molecule anti-angiogenic agent, highly selectively inhibits the activity of vascular endothelial growth factor receptor-2 tyrosine kinase. Aitan also blocks the signaling of vascular endothelial growth factor binding to its receptor, thereby strongly inhibiting tumor angiogenesis and exerting anti-tumor effect.However, a randomized controlled clinical trial of apatinib combined with vinorelbine for TNBC has not been reported. The objective of this study is to compare the therapeutic effect of vinorelbine alone or combined with apatinib mesylate for recurrent or metastatic triple-negative breast cancer (TNBC) patients who have received at least two regimens containing anthracyclines and taxanes.