showed a trendP=0.0148
5.6 months, hazard ratio (HR): 0.653, 95% CI: 0.470–0.906, P=0.0102], furthermore, showed a trend towards improved OS (in PD-L1 positive subgroup: 32.8 vs. 19.5 months, HR: 0.615, 95% CI: 0.414–0.914, P=0.0148; in intent-to-treat (ITT) population: 33.1 vs. 23.5 months, HR: 0.691, 95% CI: 0.513–0.932, P=0.0145).