PMID- 37937583 OWN - NLM STAT- Publisher LR - 20231108 IS - 1537-4513 (Electronic) IS - 1524-9557 (Linking) DP - 2023 Nov 6 TI - Effect of Concomitant Use of Proton Pump Inhibitors on Immunotherapy Clinical Response in Advanced Cancer Patients: Real-Life Setting. LID - 10.1097/CJI.0000000000000494 [doi] AB - The alteration of the gut microbiota mediated by proton pump inhibitor (PPI) drugs could be involved in the clinical response associated with immunotherapy [immunocheckpoint inhibitors (ICIs)] in cancer patients. Due to the current controversy in the scientific evidence, it has been proposed to evaluate the correlation between the concomitant use of PPIs and the effectiveness of immunotherapy in a real clinical practice setting. Single-center retrospective cohort study that included patients treated with anti-PD-1 or anti-CTLA4, including nivolumab, pembrolizumab, atezolizumab, or the combination ipilimumab-nivolumab in metastatic neoplastic disease. The clinical effectiveness of ICI, measured in progression-free survival (PFS) and overall survival (OS), was compared between the PPI-use versus PPI-no-use group. PPI-use group was associated with lower PFS [hazard ratio (HR):1.89 (1.38-2.59), P<0.001] and OS [HR: 2.02 (1.45-2.82), P<0.001] versus PPI-no-use group. However, this difference was not observed for pembrolizumab PFS [HR: 1.38 (0.93-2.39), P=0.160] and OS [HR: 1.41 (0.81-2.44), P=0.187]. The study showed significantly lower PFS and OS in the chronic PPI-use group (P<0.001), recent PPI-use group (P<0.001) and concomitant PPI-use group (P=0.001, 0.007) versus PPI-no-use group. However, late PPI use >30 days after the onset of ICI has no significant effect on the efficacy of treatment [HR: 0.92 (0.49-1.70), P=0.791; HR: 1.10 (0.59-2.05), P=0.756]. The concomitant use of PPIs in immunotherapy is associated with worse clinical outcomes compared with the group without PPI use. In addition, the study shows how the late use of PPIs does not have a significant effect on clinical benefit. CI - Copyright (c) 2023 Wolters Kluwer Health, Inc. All rights reserved. FAU - Cantarelli, Lorenzo AU - Cantarelli L AD - Servicio de Farmacia, Hospital Nuestra Senora de Guadalupe, La Gomera, Spain. FAU - Gutierrez Nicolas, Fernando AU - Gutierrez Nicolas F AD - Servicio de Farmacia, Complejo Hospitalario Universitario de Canarias, Tenerife, Spain. FAU - Garcia Gil, Sara AU - Garcia Gil S AD - Servicio de Farmacia, Complejo Hospitalario Universitario de Canarias, Tenerife, Spain. FAU - Morales Barrios, Jose A AU - Morales Barrios JA AD - Servicio de Farmacia, Complejo Hospitalario Universitario de Canarias, Tenerife, Spain. FAU - Oramas Rodriguez, Juana AU - Oramas Rodriguez J AD - Servicio de Oncologia medica, Complejo Hospitalario Universitario de Canarias, Tenerife, Spain. FAU - Nazco Casariego, Gloria J AU - Nazco Casariego GJ AD - Servicio de Farmacia, Complejo Hospitalario Universitario de Canarias, Tenerife, Spain. LA - eng PT - Journal Article DEP - 20231106 PL - United States TA - J Immunother JT - Journal of immunotherapy (Hagerstown, Md. : 1997) JID - 9706083 SB - IM EDAT- 2023/11/08 12:42 MHDA- 2023/11/08 12:42 CRDT- 2023/11/08 06:40 PHST- 2023/04/03 00:00 [received] PHST- 2023/09/27 00:00 [accepted] PHST- 2023/11/08 12:42 [medline] PHST- 2023/11/08 12:42 [pubmed] PHST- 2023/11/08 06:40 [entrez] AID - 00002371-990000000-00074 [pii] AID - 10.1097/CJI.0000000000000494 [doi] PST - aheadofprint SO - J Immunother. 2023 Nov 6. doi: 10.1097/CJI.0000000000000494.