atezolizumab based treatmentavelumab based treatmentanti-PD-(L)1
atezolizumab plus bevacizumab plus carboplatin plus paclitaxel atezolizumab plus SoC avelumab alone avelumab plus pegylated liposomal doxorubicin avelumab plus SoC nivolumab based treatment
Comparator:  vs bevacizumab plus carboplatin and paclitaxel;   vs pegylated liposomal doxorubicin;   vs Standard of Care (SoC);   vs rucaparib;   vs placebo plus SoC; 
Risk of bias:  low;   some concerns;   high;  NA;