On the contrary, in the MERIT trial, testing nivolumab in a similar pretreated population, an interesting trend (not statistically significant) in favor of PD-L1 positivity compared to PD-L1 negativity was reported in terms of ORR (40% (95% CI 21.9–61.3) vs 8% (95% CI 1.5–35.4); PFS (7.2 months vs 2.9 months; p=0.4490), and OS (17.3 months vs 11.6 months; p=0.2021) ( 15 , 89 ).
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Immunotherapy with immune checkpoint inhibitors and predictive biomarkers in malignant mesothelioma: Work still in progress.
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