Apatinib is a tyrosine kinase inhibitor which selectively inhibits the vascular endothelial growth factor receptor-2 (VEGFR-2). The anti-angiogenesis effect of apatinib has been proved in preclinical tests. Phase II study has showed an improvement of progression free survival in pretreated patients. S-1, an oral fluoropyrimidine has considerable effectiveness with mild side effect in patients failed to standard treatments. The purpose of this study is to evaluate the potential efficacy and safety of low-dose Apatinib combined with S-1 in heavily pretreated patients with advanced lung cancer. And to explore the biomarkers of antiangiogenesis therapy and the possible mechanisms of treatment resistance on the basis of next generation sequencing.
This study is to explore the potential efficacy and safety of low-dose Apatinib combined with S-1 in patients with advanced lung cancer. Patients with advanced NSCLC will be treated with oral apatinib and S-1 after treatment failure of standard regimen.