Head-to-head evidence
Cemiplimab vs Retifanlimab
Same mechanism, same race: design-graded trial evidence for both assets, with the grading rationale shown. Grades describe the quality of the evidence, never the merits of either security.
Non-Small Cell Lung Cancer
Shared mechanism: PD-1 · full Non-Small Cell Lung Cancer pipeline
Cemiplimab
Marketed by Regeneron Pharmaceuticals and partners
NCT03088540 · Phase 3 · completed
This was a large, randomized, actively-controlled trial with two hard clinical endpoints, survival and progression-free survival, both of which showed a statistically significant benefit for cemiplimab (median overall survival 23.4 vs 13.7 months; progression-free survival assessed by an independent, blinded reviewer). However, patients and treating doctors knew which treatment was being given, since the study was not blinded, which is a real limitation despite the otherwise strong design and the clear-cut result.
Next expected readout: December 2026 · NCT06623656 (registry estimate)
Retifanlimab
Marketed by Incyte
NCT04205812 · Phase 3 · completed
Participants were randomly assigned and double-blinded to receive retifanlimab or placebo with standard chemotherapy, with 391 in the retifanlimab group and 192 in the control group. The hard clinical primary endpoint of overall survival was met, favoring retifanlimab (hazard ratio 0.75; p=0.0042).
Next expected readout: December 2027 · NCT07219576 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: Cemiplimab's landscape · Retifanlimab's landscape