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Rate of cancer progression as a predictive marker of efficacy of immunotherapy; an analysis in metastatic non-small-cell lung cancer


Aim: To explore the value of rate of cancer progression (ROP) prior to starting PD-1 inhibitors as a predictive and prognostic biomarker. Materials & methods: Retrospective data of patients with metastatic non-small-cell lung cancer treated with second-line PD-1 inhibitors were collected. Patients were divided into two groups: slow and rapid based on their ROP. Results: A total of 73 patients were eligible. Progression-free survival (PFS) was significantly shorter in rapid ROP, compared with slow (1.7 vs 4.8 months; HR: 2.42; 95% CI: 1.36-4.30; p = 0.008), as was the overall survival (OS; 5.6 vs 18.7 months; HR: 2.30; 95% CI: 1.13-4.69; p = 0.02). Overall response rate (40 vs 17%) was numerically higher in slow ROP than rapid (p = 0.19). PFS/OS did not correlate with the best response to their last chemotherapy or time to progression from previous line of therapy. Presence of a targetable mutation negatively correlated with PFS/OS. Conclusion: ROP prior to starting PD-1 inhibitors correlates with survival. PFS/OS were shorter in rapid ROP.

Type Journal
ISBN 1750-7448 (Electronic) 1750-743X (Linking)
Authors Prasanna, T.; Arasaratnam, M.; Boyer, M.; McNeil, C.; Barnet, M. B.; Asher, R.; Hui, R.; Nagrial, A.; Kao, S.
Responsible Garvan Author Megan Barnet
Publisher Name Immunotherapy
Published Date 2019-06-30
Published Volume 11
Published Issue 8
Published Pages 657-665
Status Published in-print
DOI 10.2217/imt-2018-0180
URL link to publisher's version