PMID- 38187185 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240109 IS - 2192-3183 (Electronic) IS - 2192-3183 (Linking) VI - 13 IP - 1 DP - 2024 Jan TI - Potential drug interactions between pazopanib and proton pump inhibitors/potassium-competitive acid blockers in patients with soft tissue sarcoma. PG - 63-67 LID - 10.1007/s13691-023-00638-2 [doi] AB - Because absorption of the oral drug pazopanib depends on gastric pH, concomitant use of proton pump inhibitors (PPIs)/potassium-competitive acid blockers (P-CABs) may inhibit pazopanib absorption by elevating the gastric pH. This study investigated to what extent the concomitant use of PPIs/P-CABs affects treatment with pazopanib in patients with soft tissue sarcoma. We retrospectively reviewed the medical records of patients with soft tissue sarcoma who had received at least one dose of pazopanib at our institution, among which those who had received concomitant PPIs/P-CABs were included in this analysis. Using paired sample t tests, the frequency of dose reduction or interruption of pazopanib and the major adverse events (AEs) were compared in each patient between periods with and without PPIs/P-CABs. Between January 2018 and December 2022, eight patients were eligible. The median time to treatment failure (TTF) was 3.9 months (2.1-38.2 months). Two patients received concomitant PPIs/P-CABs throughout their treatment with pazopanib. Among the other six patients, dose reduction or interruption of pazopanib occurred less frequently (P = 0.021), and neutropenia tended to be milder (P = 0.155) with the concomitant use of PPIs/P-CABs. Although the concomitant use of PPIs/P-CABs had no apparent effect on TTF in patients undergoing pazopanib treatment, dose reduction or interruption of pazopanib occurred less frequently, and neutropenia was milder, suggesting that concomitant use of PPIs/P-CABs might decrease the pharmacological activity of pazopanib. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13691-023-00638-2. CI - (c) The Author(s) under exclusive licence to The Japan Society of Clinical Oncology 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. FAU - Liang, Yao AU - Liang Y AD - Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Aichi 466-8560 Japan. ROR: https://ror.org/008zz8m46. GRID: grid.437848.4. ISNI: 0000 0004 0569 8970 FAU - Maeda, Osamu AU - Maeda O AUID- ORCID: 0000-0003-4700-6541 AD - Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Aichi 466-8560 Japan. ROR: https://ror.org/008zz8m46. GRID: grid.437848.4. ISNI: 0000 0004 0569 8970 FAU - Shimokata, Tomoya AU - Shimokata T AD - Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Aichi 466-8560 Japan. ROR: https://ror.org/008zz8m46. GRID: grid.437848.4. ISNI: 0000 0004 0569 8970 FAU - Yokota, Kenji AU - Yokota K AD - Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550 Japan. ROR: https://ror.org/04chrp450. GRID: grid.27476.30. ISNI: 0000 0001 0943 978X FAU - Koike, Hiroshi AU - Koike H AD - Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550 Japan. ROR: https://ror.org/04chrp450. GRID: grid.27476.30. ISNI: 0000 0001 0943 978X FAU - Sakai, Tomohisa AU - Sakai T AD - Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550 Japan. ROR: https://ror.org/04chrp450. GRID: grid.27476.30. ISNI: 0000 0001 0943 978X FAU - Ikuta, Kunihiro AU - Ikuta K AD - Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550 Japan. ROR: https://ror.org/04chrp450. GRID: grid.27476.30. ISNI: 0000 0001 0943 978X FAU - Urakawa, Hiroshi AU - Urakawa H AD - Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550 Japan. ROR: https://ror.org/04chrp450. GRID: grid.27476.30. ISNI: 0000 0001 0943 978X FAU - Nishida, Yoshihiro AU - Nishida Y AD - Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550 Japan. ROR: https://ror.org/04chrp450. GRID: grid.27476.30. ISNI: 0000 0001 0943 978X AD - Department of Rehabilitation, Nagoya University Hospital, Nagoya, Aichi 466-8560 Japan. ROR: https://ror.org/008zz8m46. GRID: grid.437848.4. ISNI: 0000 0004 0569 8970 FAU - Akiyama, Masashi AU - Akiyama M AD - Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550 Japan. ROR: https://ror.org/04chrp450. GRID: grid.27476.30. ISNI: 0000 0001 0943 978X FAU - Ando, Yuichi AU - Ando Y AD - Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Aichi 466-8560 Japan. ROR: https://ror.org/008zz8m46. GRID: grid.437848.4. ISNI: 0000 0004 0569 8970 LA - eng PT - Journal Article DEP - 20231116 PL - Singapore TA - Int Cancer Conf J JT - International cancer conference journal JID - 101734231 PMC - PMC10764704 OTO - NOTNLM OT - Drug interactions OT - Pazopanib OT - Potassium-competitive acid blockers OT - Proton pump inhibitors OT - Soft tissue sarcoma COIS- Conflict of interestDr. Ando reports grants and personal fees from Chugai Pharmaceutical Co., Ltd., grants and personal fees from Bayer Holding Ltd., grants from BeiGene, Ltd., and personal fees from Geo Holdings Corporation. EDAT- 2024/01/08 06:43 MHDA- 2024/01/08 06:44 PMCR- 2024/11/16 CRDT- 2024/01/08 04:36 PHST- 2023/08/28 00:00 [received] PHST- 2023/10/23 00:00 [accepted] PHST- 2024/11/16 00:00 [pmc-release] PHST- 2024/01/08 06:44 [medline] PHST- 2024/01/08 06:43 [pubmed] PHST- 2024/01/08 04:36 [entrez] AID - 638 [pii] AID - 10.1007/s13691-023-00638-2 [doi] PST - epublish SO - Int Cancer Conf J. 2023 Nov 16;13(1):63-67. doi: 10.1007/s13691-023-00638-2. eCollection 2024 Jan.