A Study for Identification of Predictive Immune Biomarker in Peripheral Blood for Nivolumab Therapy in NSCLC Patients

The study aimed to elucidate predictive immune related biomarker to the responsiveness to the PD-1 blockade and evaluate the dynamics of immune cells in peripheral blood from NSCLC patients during nivolumab treatment. Hypothesis that The ratio of MDSC after 1st or 2nd cycle can predict the response to nivolumab in NSCLC patients earlier than the tumor assessment by imaging scan. The primary objective is to determine whether myeloid-derived suppressor cell (MDSC) ratio after 1st or 2nd cycle of nivolumab can be accurate predictive biomarkers of nivolumab in advanced NSCLC.