title: Lansoprazole Exacerbates Pemetrexed-Mediated Hematologic Toxicity by Competitive Inhibition of Renal Basolateral Human Organic Anion Transporter 3.
abstract: Pemetrexed, a multitargeted antifolate, is eliminated by tubular secretion via human organic anion transporter 3 (hOAT3). Although proton pump inhibitors (PPIs) are frequently used in cancer patients, the drug interaction between PPIs and pemetrexed remains to be clarified. In this study, we examined the drug interaction between pemetrexed and PPIs in hOAT3-expressing cultured cells, and retrospectively analyzed the impact of PPIs on the development of hematologic toxicity in 108 patients who received pemetrexed and carboplatin treatment of nonsquamous non-small cell lung cancer for the first time between January 2011 and June 2015. We established that pemetrexed was transported via hOAT3 (Km = 68.3 ± 11.1 µM). Lansoprazole, rabeprazole, pantoprazole, esomeprazole, omeprazole, and vonoprazan inhibited hOAT3-mediated uptake of pemetrexed in a concentration-dependent manner. The inhibitory effect of lansoprazole was much greater than those of other PPIs and the apparent IC50 value of lansoprazole against pemetrexed transport via hOAT3 was 0.57 ± 0.17 µM. The inhibitory type of lansoprazole was competitive. In a retrospective study, multivariate analysis revealed that coadministration of lansoprazole, but not other PPIs, with pemetrexed and carboplatin was an independent risk factor significantly contributing to the development of hematologic toxicity (odds ratio: 10.004, P = 0.005). These findings demonstrated that coadministration of lansoprazole could exacerbate the hematologic toxicity associated with pemetrexed, at least in part, by competitive inhibition of hOAT3. Our results would aid clinicians to make decisions of coadministration drugs to avoid drug interaction-induced side effects for achievement of safe and appropriate chemotherapy with pemetrexed.
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Ikemura
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Yugo
authors.initials: Y
authors.lastname: Hamada
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Chinatsu
authors.initials: C
authors.lastname: Kaya
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Enokiya
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Muraki
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Nakahara
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Hajime
authors.initials: H
authors.lastname: Fujimoto
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Tetsu
authors.initials: T
authors.lastname: Kobayashi
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Iwamoto
authors.affiliation: Department of Clinical Pharmacy and Biopharmaceutics, Mie University Graduate School of Medicine, Tsu (K.I., Y.H., T.I., M.O.); Department of Pharmacy, Mie University Hospital, Tsu (K.I., T.E., Y.M., T.I., M.O.); Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka (C.K.); Department of Pulmonary and Critical Care Medicine, Mie University Graduate School of Medicine, Tsu (H.N., H.F., T.K.), Mie, Japan okudam@clin.medic.mie-u.ac.jp.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Okuda
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D016190:Carboplatin / Q000008:administration & dosage; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy; D004347:Drug Interactions; D005260:Female; D005493:Folic Acid Antagonists / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology*; D057809:HEK293 Cells; D006403:Hematologic Tests; D006801:Humans; D007668:Kidney / Q000187:drug effects* / Q000378:metabolism; D064747:Lansoprazole / Q000008:administration & dosage / Q000494:pharmacology*; D008175:Lung Neoplasms / Q000188:drug therapy; D008297:Male; D008875:Middle Aged; D029362:Organic Anion Transporters, Sodium-Independent / Q000037:antagonists & inhibitors*; D000068437:Pemetrexed / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology*; D054328:Proton Pump Inhibitors / Q000494:pharmacology*; D012189:Retrospective Studies
chemical_list: D005493:Folic Acid Antagonists; D029362:Organic Anion Transporters, Sodium-Independent; D054328:Proton Pump Inhibitors; C114338:organic anion transport protein 3; D000068437:Pemetrexed; D064747:Lansoprazole; D016190:Carboplatin