Metabolic activity by 18 F–FDG-PET/CT is predictive of early response after nivolumab in previously treated NSCLC

Background Nivolumab, an anti-programmed death-1 (PD-1) antibody, is administered in patients with previously treated non-small cell lung cancer. However, little is known about the established biomarker predicting the efficacy of nivolumab. Here, we conducted a preliminary study to investigate whether 18F–FDG-PET/CT could predict the therapeutic response of nivolumab at the early phase.