graph Evidence gap map comparisons
atezolizumab based treatmentavelumab based treatmentdurvalumab based treatmentnivolumab based treatmentpembrolizumab based treatment
atezolizumab alone atezolizumab plus SoC avelumab alone durvalumab alone nivolumab alone pembrolizumab alone pembrolizumab plus SoC
Comparator:  vs no additional treatment;   vs placebo;   vs gemcitabine plus platin;   vs placebo plus SoC;   vs Standard of Care (SoC);   vs BSC; 
Risk of bias:  low;   some concerns;   high;  NA;