pembrolizumab alone
pembrolizumab (10mg/kg) 2 weeks
mML - (neo)adjuvant (NA)
mML - NA - all population 9
mML - NA - PDL1 positive 1
mML - 1st line (L1)
mML - L1 - all population 7
mML - L1 - BRAF mutant 2
mML - L1 - BRAF wild 3
mML - 2nd line (L2)
mML - L2 - all population 11   
mML - L2 - BRAF mutant 1
Comparator:  vs ipilimumab alone; 
Risk of bias:  low;   some concerns;   high;  NA;