Fig. 3

Biomarker analysis stratified by the baseline levels of Ki-67, NSE, ProGRP, and the status of PD-L1 expression & TMB. Tumor shrinkage rate and Kaplan–Meier curves of PFS & OS stratified by the baseline levels of a Ki-67, b NSE, c ProGRP. d Swimmer plot stratified by the status of PD-L1 expression and TMB at baseline