atezolizumab based treatment
atezolizumab plus SoC
mML - 1st line (L1)
mML - L1 - all population 7
mML - L1 - BRAF mutant 2   
mML - L1 - BRAF wild 3
Comparator:  vs placebo plus SoC; 
Risk of bias:  low;   some concerns;   high;  NA;