Study Exclusion reasons Remarks Reference(s)
CheckMate 511, 2019 randomized controlled trial phase IIIb/IV  
Amaria, 2018 - inadequate or absent control group

Amaria Nat. Med. 2018; 24:1649-1654 10.1038/s41591-018-0197-1

 
Long, 2018 - not relevant exposure

Long Lancet Oncol. 2018; 19:672-681 10.1016/S1470-2045(18)30139-6

 
Long, 2018 - not relevant study design

Long Lancet Oncol. 2018; 19:672-681 10.1016/S1470-2045(18)30139-6

 
Blank, 2018 - not relevant study design

Blank Nat. Med. 2018; 24:1655-1661 10.1038/s41591-018-0198-0

 
Lebbé, 2019 - not relevant outcome

Lebbé J. Clin. Oncol. 2019; 37:867-875 10.1200/JCO.18.01998