Abstract
Background
Immune checkpoint inhibitors (ICIs) represent the standard of care as first- or second-line treatment in patients with renal cell carcinoma (RCC). Proton pump inhibitors (PPIs) are among the most prescribed drugs worldwide and are known to affect gut microbiota, which is gaining interest in its association with outcomes for patients on ICIs.
Objective
The aim of this study was to evaluate the impact of PPIs on outcomes in RCC patients receiving immunotherapy.
Patients and Methods
We retrospectively collected data from patients with metastatic RCC who received the combination of ipilimumab and nivolumab for first-line treatment (Cohort 1) or single-agent nivolumab for second-line or third-line treatment (Cohort 2) from five international centers with expertise in the treatment of RCC. Data about clinicopathological characteristics, PPI use, and outcome on ICIs were collected. Endpoints of the study were objective response rate (ORR), progression-free survival (PFS), and overall survival (OS).
Results
Two hundred and eighteen patients (71% male, median age 61 years) were included in the analysis, 62 in Cohort 1 (including 25 patients receiving PPIs) and 156 in Cohort 2 (including 88 patients receiving PPIs), and were followed up for a median of 42 months. In Cohort 1, no difference was observed in ORR (48% vs 57%; p = 0.203), PFS (12.2 vs 8.5 months; p = 0.928), or OS (not reached [NR] vs 27.3 months; p = 0.84). In Cohort 2, no difference was observed in ORR (32% vs 28%; p = 0.538), PFS (6.7 vs 9.0 months; p = 0.799), or OS (16.0 vs 26.0 months; p = 0.324).
Conclusions
In patients with RCC, concomitant PPI use did not seem to affect survival outcomes on ICIs, either as combination therapy or monotherapy.
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Conflict of interest
Veronica Mollica, Matteo Santoni, Marc R. Matrana, Umberto Basso, Ugo De Giorgi, Alessandro Rizzo, Marco Maruzzo, Andrea Marchetti, Matteo Rosellini, Sara Bleve, Diana Maslov, Karine Tawagi, Ernest Philon, Zoe Blake, and Francesco Massari declare that they have no conflicts of interest that might be relevant to the contents of this manuscript.
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Not required. Informed consent was not required due to the retrospective nature of the study.
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Author contributions
Conception and design: VM, MS, and FM. Collection and assembly of data: VM, MS, and FM. Provision of study material or patients: all authors. Data analysis and interpretation: MS and FM performed the data analysis, all authors interpreted the data. Manuscript writing: VM, MS, and FM. Review of manuscript draft: all authors. Final approval of manuscript: all authors. Accountable for all aspects of the work: all authors.
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Mollica, V., Santoni, M., Matrana, M.R. et al. Concomitant Proton Pump Inhibitors and Outcome of Patients Treated with Nivolumab Alone or Plus Ipilimumab for Advanced Renal Cell Carcinoma. Targ Oncol 17, 61–68 (2022). https://doi.org/10.1007/s11523-021-00861-y
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DOI: https://doi.org/10.1007/s11523-021-00861-y