atezolizumab based treatmentpembrolizumab based treatmentImmune checkpoint association
atezolizumab alone atezolizumab plus cometinib pembrolizumab alone durvalumab plus tremelimumab
mCRC - 1st line (L1) 1   
mCRC - 2nd line (L2) 3       
Comparator:  vs Standard of Care (SoC);   vs regorafenib;   vs BSC; 
Risk of bias:  low;   some concerns;   high;  NA;