IMspire-170, 2020 NCT03273153
atezolizumab plus cometinib (n=222) vs. pembrolizumab alone (n=224)
randomized controlled trial
cometinib plus atezolizumab
cobimetinib (60 mg once daily, days 1-21) plus intravenous atezolizumab (840 mg, days 1 plus 15) in 28-day cycles
pembrolizumab
intravenous pembrolizumab (200 mg every 3 weeks)
Dose reductions for atezolizumab or pembrolizumab were not permitted.
mML - L1 - BRAF wild
open label
multicenter
P3/ two sided and no interim analysis. Hierarchical testing procedure (PFS(IRC) then OS then ORR)
Cobimetinib plus atezolizumab did not improve PFS compared with pembrolizumab monotherapy in patients with BRAF mutation