Efficacy of PD-1/PD-L1 inhibitors against pretreated advanced cancer: a systematic review and meta-analysis

Comparative efficacy and safety of immunotherapies targeting the PD-1/PD-L1 pathway for previously treated advanced non-small cell lung cancer: A Bayesian network meta-analysis

BACKGROUND

Two PD-1 (pembrolizumab, nivolumab) and one PD-L1(atezolizumab) inhibitors are approved for previously treated advanced non-small cell lung cancer but have not been compared in head-to-head trials.

METHOD

A network meta-analysis was conducted to compare efficacy/safety of PD-1/PD-L1 inhibitors.

RESULTS

In five-trials (including long-term updates) with docetaxel as common comparator there were no differences in OS and PFS between PD-1/PD-L1 inhibitors. Pembrolizumab (odds ratio(OR) = 2.22, 95%CrI = 1.28-3.70) and nivolumab (OR = 1.92, 95%CrI = 1.15-3.23) had higher ORRs than atezolizumab and at PD-L1 expression ≥50% and ≥1%. Probabilistically, pembrolizumab ranked first in OS and ORR, and in OS sub-analyses for adenocarcinoma, EGFR-mutant, ECOG-score-1, male, and age <65 years. Nivolumab ranked first in PFS, and in OS sub-analyses for squamous-cell disease, EGFR-wild-type, and ECOG-score-0. Pembrolizumab and nivolumab ranked the best option for most of adverse events.

CONCLUSION

While pembrolizumab and nivolumab prevailed in rank in OS and ORR benefit, patient characteristics, safety and tolerance should be considered in treatment decision-making.