ArticleImmunotherapy2025
Proton pump inhibitors reduce nivolumab efficacy in unresectable advanced or recurrent gastric cancer.
Article in Immunotherapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Fecal microbiota transplantation for advanced non-small cell lung cancer with secondary PD-1 resistance efficacy prognostic factors and microbiome diversity analysis.Journal of translational medicine · 2026Trial
- Impact of Concomitant Proton Pump Inhibitor Use on Oncologic Outcomes of Neoadjuvant Chemoimmunotherapy in Locally Advanced Gastric Cancer: A Multicenter Real-World Study.Annals of surgical oncology · 2026Article
- Association of probiotic use with nivolumab efficacy in gastric cancer patients on gastric acid suppressants.iScience · 2026Article
- Association of Probiotics with Effectiveness of Nivolumab or Pembrolizumab in Patients with Esophageal Cancer Taking Proton Pump Inhibitors: A Multicenter Retrospective Study.Journal of gastrointestinal cancer · 2026Observational
- Proton Pump Inhibitors Attenuate the Effectiveness of Nivolumab Monotherapy in Patients with Advanced Gastric Cancer: A Retrospective Study.Journal of gastrointestinal cancer · 2025Observational
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Authors and funding
9 authors.
Funding
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Abstract
backgroundProton pump inhibitors (PPI) have been shown to decrease the efficacy of immune checkpoint inhibitors in patients with various cancer types. However, there are few reports on their effect on patients with gastric cancer (GC). Therefore, we investigated the efficacy of nivolumab in patients with GC receiving PPI.
methodsThis retrospective study analyzed data of patients who received nivolumab monotherapy for unresectable advanced or recurrent GC at Osaka Metropolitan University Hospital between September 2017 and December 2021. The primary and secondary endpoints were progression-free survival (PFS) and overall survival (OS), respectively. PPI use was defined as within 30 days before and after initiation of nivolumab monotherapy.
resultsSeventy-seven eligible patients were included in this analysis. PPIs were used in 33 patients, while 36 patients had a previous gastrectomy. Multivariate analysis revealed that only PPI use was an independent predictor of PFS (hazard ratio [HR] 1.93, 95% confidence interval [CI] 1.03-3.64,
conclusionPPIs may reduce the efficacy of nivolumab, and their use should be carefully considered in patients receiving nivolumab.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.