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Liu Y, Gao Z, Hou X. Potassium-competitive acid blockers and proton-pump inhibitors for healing of erosive esophagitis: a systematic review and network meta-analysis. Therap Adv Gastroenterol 2024; 17:17562848241251567. [PMID: 38903448 PMCID: PMC11189022 DOI: 10.1177/17562848241251567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/12/2024] [Indexed: 06/22/2024] Open
Abstract
Background Proton-pump inhibitors (PPIs) and potassium-competitive acid blockers (P-CABs) are recommended for erosive esophagitis (EE), with good safety and tolerance. However, it is unclear which is the best treatment option for EE. Objectives This study aimed to evaluate the comparative efficacy of P-CABs and PPIs for healing EE patients, seeking an appropriate treatment choice in the 4- or 8-week treatment and standard or double dose. Design A systematic review and network meta-analysis. Data sources and methods Relevant databases were searched to collect randomized controlled trials of PPIs and P-CABs in the treatment of EE up to 31 May 2023. Studies on standard or double-dose PPIs or P-CABs which were published in English and assessed 4- or 8-week healing effects in EE were included. A network meta-analysis was performed to evaluate the efficacy of the treatments under the frequentist framework. Sensitivity and subgroup analyses of patients with different baseline EE were also conducted. Results In all, 34 studies involving 25,054 patients and 9 PPIs, 6 P-CABs, or placebo treatment interventions were included. The pooled 4-week healing rate was significantly statistically lower than the pooled 8-week healing rate for most treatments. Besides, the higher healing rate of double-dose treatment than standard-dose treatment was not observed in the initial treatment of most drugs. The main analysis only included studies conducted for both patients with and without severe EE at baseline, and the proportion of severe EE included in the study was >10%, Keverprazan 20 mg qd ranked best with a surface under the cumulative ranking curve (SUCRA) value of 84.7, followed by Ilaprazole 10 mg qd with a SUCRA value of 82.0, for the healing rate at 8 weeks. Sensitivity analysis showed that the results were robust. Subgroup analysis showed that most P-CABs had higher healing rates than PPIs, particularly for patients with severe EE. And the healing rate of Keverprazan 20 mg qd at 8 weeks ranked best in the subgroup without or with severe EE at baseline. Conclusion This study showed that an 8-week treatment seemed more effective than the 4-week treatment for healing EE patients. The healing effect of Keverprazan (20 mg qd) ranked best in 8-week treatment, for both severe and non-severe EE patients. Trial registration The study protocol was registered with INPLASY (registration number INPLASY2023120053).
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Affiliation(s)
- Yin Liu
- Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Zhifeng Gao
- Department of Gastroenterology, The First People’s Hospital of Xuzhou, Xuzhou, China
| | - XiaoHua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430022 Wuhan, China
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Chen X, Chen T, Huang Y, Wang M, Wang Y, Wu P, Xia X, Du P, Wu J, Shen J, Jia Y. LC-MS/MS method for quick detection of vonoprazan fumarate in human plasma: Development, validation and its application to a bioequivalence study. Biomed Chromatogr 2024; 38:e5860. [PMID: 38558021 DOI: 10.1002/bmc.5860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/03/2024] [Accepted: 02/21/2024] [Indexed: 04/04/2024]
Abstract
A liquid chromatography-tandem mass spectrometry method with vonoprazan fumarate-d4 as a stable isotope-labeled internal standard was developed and validated aiming at quantification of vonoprazan fumarate in human plasma for a bioequivalence study. Chromatographic separation was achieved by acetonitrile one-step protein precipitation using a gradient elution of 0.1% formic acid aqueous solution and acetonitrile with a run time of 3.65 min. Detection was carried out on a tandem mass spectrometer in multiple reaction monitoring mode via a positive electrospray ionization interface. The multiple reaction monitoring mode of precursor-product ion transitions for vonoprazan fumarate and vonoprazan fumarate-d4 were m/z 346.0 → 315.1 and 350.0 → 316.0, respectively. The linear range was 0.150-60.000 ng/ml. This method was fully validated with acceptable results in terms of selectivity, carryover, lower limit of quantification, calibration curve, accuracy, precision, dilution effect, matrix effect, stability, recovery and incurred sample reanalysis. A successful application of this method was realized in the bioequivalence study of vonoprazan fumarate tablet (20 mg) among healthy Chinese volunteers.
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Affiliation(s)
- Xinyan Chen
- Anhui Provincial Center of Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
- School of pharmacy, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Tao Chen
- Jiangsu Wangao Pharmaceutical Co., Ltd., Nantong, Jiangsu, People's Republic of China
| | - Yunzhe Huang
- School of pharmacy, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Minhui Wang
- Anhui Provincial Center of Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Yaqin Wang
- Anhui Provincial Center of Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Ping Wu
- Anhui Provincial Center of Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Xiaocui Xia
- Anhui Provincial Center of Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Pengfei Du
- School of pharmacy, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Jianbang Wu
- School of pharmacy, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Jie Shen
- Anhui Provincial Center of Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
- School of pharmacy, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Yuanwei Jia
- Anhui Provincial Center of Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
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Xiao Y, Qian J, Zhang S, Dai N, Chun HJ, Chiu C, Chong CF, Funao N, Sakurai Y, Eisner JD, Xie L, Chen M. Vonoprazan 10 mg or 20 mg vs. lansoprazole 15 mg as maintenance therapy in Asian patients with healed erosive esophagitis: A randomized controlled trial. Chin Med J (Engl) 2024; 137:962-971. [PMID: 38654422 PMCID: PMC11046018 DOI: 10.1097/cm9.0000000000003068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND Erosive esophagitis (EE) is a gastroesophageal reflux disease characterized by mucosal breaks in the esophagus. Proton pump inhibitors are widely used as maintenance therapy for EE, but many patients still relapse. In this trial, we evaluated the noninferiority of vonoprazan vs. lansoprazole as maintenance therapy in patients with healed EE. METHODS We performed a double-blind, double-dummy, multicenter, phase 3 clinical trial among non-Japanese Asian adults with endoscopically confirmed healed EE from April 2015 to February 2019. Patients from China, South Korea, and Malaysia were randomized to vonoprazan 10 mg or 20 mg once daily or lansoprazole 15 mg once daily for 24 weeks. The primary endpoint was endoscopically confirmed EE recurrence rate over 24 weeks with a noninferiority margin of 10% using a two-sided 95% confidence interval (CI). Treatment-emergent adverse events (TEAEs) were recorded. RESULTS Among 703 patients, EE recurrence was observed in 24/181 (13.3%) and 21/171 (12.3%) patients receiving vonoprazan 10 mg or 20 mg, respectively, and 47/184 (25.5%) patients receiving lansoprazole (differences: -12.3% [95% CI, -20.3% to -4.3%] and -13.3% [95% CI, -21.3% to -5.3%], respectively), meeting the primary endpoint of noninferiority to lansoprazole in preventing EE recurrence at 24 weeks. Evidence of superiority (upper bound of 95% CI <0%) was also observed. At 12 weeks, endoscopically confirmed EE recurrence was observed in 5/18, 2/20, and 7/20 of patients receiving vonoprazan 10 mg, vonoprazan 20 mg, and lansoprazole, respectively. TEAEs were experienced by 66.8% (157/235), 69.0% (156/226), and 65.3% (158/242) of patients receiving vonoprazan 10 mg, vonoprazan 20 mg, and lansoprazole, respectively. The most common TEAE was upper respiratory tract infection in 12.8% (30/235) and 12.8% (29/226) patients in vonoprazan 10 mg and 20 mg groups, respectively and 8.7% (21/242) patients in lansoprazole group. CONCLUSION Vonoprazan maintenance therapy was well-tolerated and noninferior to lansoprazole for preventing EE recurrence in Asian patients with healed EE. TRIAL REGISTRATION https://clinicaltrials.gov; NCT02388737.
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Affiliation(s)
- Yinglian Xiao
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510062, China
| | - Jiaming Qian
- Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100006, China
| | - Shutian Zhang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Ning Dai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine Zhejiang University, Hangzhou, Zhejiang 310020, China
| | - Hoon Jai Chun
- Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryeodae-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Chengtang Chiu
- Department of Gastroenterology & Hepatology, Linkou Medical Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan 33353, China
- College of Medicine, Chang Gung University, Taoyuan, Taiwan 33353, China
| | - Chui Fung Chong
- Takeda Development Center Asia, Singapore 018981, Singapore
- Current affiliation: Hoffmann-La Roche, Basel, 4070 Switzerland
| | - Nobuo Funao
- Takeda Pharmaceutical Company, Chuo-ku, Osaka 540-8645, Japan
| | - Yuuichi Sakurai
- Takeda Pharmaceutical Company, Chuo-ku, Osaka 540-8645, Japan
| | - Jessica D. Eisner
- Takeda Pharmaceuticals International Company, Cambridge, MA, 02142 USA
- Current affiliation: Abbott Laboratories, Lake Forest, IL 60045, USA
| | - Li Xie
- China Medical Team, Takeda China, Beijing 100027, China
| | - Minhu Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510062, China
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Shirley M. Vonoprazan: A Review in Helicobacter pylori Infection. Drugs 2024; 84:319-327. [PMID: 38388872 DOI: 10.1007/s40265-023-01991-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2023] [Indexed: 02/24/2024]
Abstract
Treatment for the eradication of Helicobacter pylori infection, a leading cause of peptic ulcer disease and an important risk factor for gastric cancer and mucosa-associated lymphoid tissue lymphoma, is indicated whenever infection is identified. However, treatment success rates with current guideline-recommended proton-pump inhibitor (PPI)-based regimens remain suboptimal, with one potential factor associated with treatment failure being inadequate acid suppression. Vonoprazan (Voquezna®) is a first-in-class potassium-competitive acid blocker with the potential to provide potent and sustained acid suppression. Following clinical trials conducted mainly in Asia (supported by post-marketing experience from Asia) and the phase III PHALCON-HP trial conducted in the USA and Europe, vonoprazan is now approved in the USA for use in combination with amoxicillin (dual therapy) or amoxicillin and clarithromycin (triple therapy) for the treatment of H. pylori infection in adults. The vonoprazan-based dual and triple therapy regimens were generally well tolerated in PHALCON-HP. In addition, vonoprazan has advantages including a rapid onset of action and no food effect, making vonoprazan-based dual and triple therapy regimens valuable alternatives to standard PPI-based triple therapy in the treatment of H. pylori infection.
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Affiliation(s)
- Matt Shirley
- Springer Nature, Private Bag 65901, Mairangi Bay, Auckland, 0754, New Zealand.
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Wu K, Li X, Zhou Z, Zhao Y, Su M, Cheng Z, Wu X, Huang Z, Jin X, Li J, Zhang M, Liu J, Liu B. Predicting pharmacodynamic effects through early drug discovery with artificial intelligence-physiologically based pharmacokinetic (AI-PBPK) modelling. Front Pharmacol 2024; 15:1330855. [PMID: 38434709 PMCID: PMC10904617 DOI: 10.3389/fphar.2024.1330855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/02/2024] [Indexed: 03/05/2024] Open
Abstract
A mechanism-based pharmacokinetic/pharmacodynamic (PK/PD) model links the concentration-time profile of a drug with its therapeutic effects based on the underlying biological or physiological processes. Clinical endpoints play a pivotal role in drug development. Despite the substantial time and effort invested in screening drugs for favourable pharmacokinetic (PK) properties, they may not consistently yield optimal clinical outcomes. Furthermore, in the virtual compound screening phase, researchers cannot observe clinical outcomes in humans directly. These uncertainties prolong the process of drug development. As incorporation of Artificial Intelligence (AI) into the physiologically based pharmacokinetic/pharmacodynamic (PBPK) model can assist in forecasting pharmacodynamic (PD) effects within the human body, we introduce a methodology for utilizing the AI-PBPK platform to predict the PK and PD outcomes of target compounds in the early drug discovery stage. In this integrated platform, machine learning is used to predict the parameters for the model, and the mechanism-based PD model is used to predict the PD outcome through the PK results. This platform enables researchers to align the PK profile of a drug with desired PD effects at the early drug discovery stage. Case studies are presented to assess and compare five potassium-competitive acid blocker (P-CAB) compounds, after calibration and verification using vonoprazan and revaprazan.
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Affiliation(s)
- Keheng Wu
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Xue Li
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Zhou Zhou
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Youni Zhao
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Mei Su
- Jiangsu Carephar Pharmaceutical Co., Ltd., Nanjing, China
| | - Zhuo Cheng
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Xinyi Wu
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Zhijun Huang
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Xiong Jin
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, China
| | - Jingxi Li
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, China
| | - Mengjun Zhang
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, China
| | - Jack Liu
- Yinghan Pharmaceutical Technology (Shanghai) Co., Ltd., Shanghai, China
| | - Bo Liu
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, China
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6
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Du RC, Hu YX, Ouyang Y, Ling LX, Xu JY, Sa R, Liu XS, Hong JB, Zhu Y, Lu NH, Hu Y. Vonoprazan and amoxicillin dual therapy as the first-line treatment of Helicobacter pylori infection: A systematic review and meta-analysis. Helicobacter 2024; 29:e13039. [PMID: 38036941 DOI: 10.1111/hel.13039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 11/09/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Recent clinical trials have evaluated the efficacy of vonoprazan-amoxicillin (VA) dual therapy as the first-line treatment for Helicobacter pylori infection in different regions with inconsistent results reported. In this systematic review and meta-analysis, we aimed to evaluate the efficacy of VA dual therapy compared to the currently recommended therapy for eradicating H. pylori. MATERIALS AND METHODS A comprehensive search of the PubMed, Cochrane, and Embase databases was performed using the following search terms: ("Helicobacter" OR "H. pylori" OR "Hp") AND ("vonoprazan" OR "potassium-competitive acid blocker" OR "P-CAB") AND ("amoxicillin" OR "penicillin") AND ("dual"). The primary outcome was to evaluate the eradication rate according to intention-to-treat and per-protocol analysis. The secondary outcomes were adverse events and compliance. RESULTS A total of 15 studies involving 4, 568 patients were included. The pooled eradication rate of VA dual therapy was 85.0% and 90.0% by intention-to-treat and per-protocol analysis, respectively. The adverse events rate and compliance of VA dual therapy were 17.5% and 96%, respectively. The efficacy of VA dual therapy was superior to proton pump inhibitors-based triple therapy (82.0% vs. 71.4%, p < 0.01) but lower than vonoprazan-containing quadruple therapy (83.1% vs. 93.3%, p = 0.02). 7-day VA dual therapy showed lower eradication rates than 10-day (χ2 = 24.09, p < 0.01) and 14-day VA dual therapy (χ2 = 11.87, p < 0.01). The adverse events rate of VA dual therapy was lower than vonoprazan triple therapy (24.6% vs. 30.9%, p = 0.01) and bismuth-containing quadruple therapy (20.5% vs. 47.9%, p < 0.01). No significant difference of compliance was observed between VA dual therapy and each subgroup. CONCLUSION VA dual therapy, a novel regimen, showed high efficacy as the first-line treatment for H. pylori eradication, which should be optimized before application in different regions.
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Affiliation(s)
- Ren-Chun Du
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- HuanKui Academy, Nanchang University, Nanchang, China
| | - Yu-Xin Hu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- The First Clinical Medical College of Nanchang University, Nanchang, China
| | - Yaobin Ouyang
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Li-Xiang Ling
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jing-Yuan Xu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- HuanKui Academy, Nanchang University, Nanchang, China
| | - Rina Sa
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- HuanKui Academy, Nanchang University, Nanchang, China
| | - Xiao-Shun Liu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jun-Bo Hong
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yin Zhu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Nong-Hua Lu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yi Hu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Surgery, The Chinese University of Hong Kong, Shatin, China
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Li J, Shi H, Zhou F, Xie L, Lin R. The Efficacy and Safety of Regimens for Helicobacter pylori Eradication Treatment in China: A Systemic Review and Network Meta-Analysis. J Clin Gastroenterol 2024; 58:12-23. [PMID: 38084866 DOI: 10.1097/mcg.0000000000001902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
BACKGROUND With Helicobacter pylori's increasing antibiotic resistance, evidence of more effective treatments is lacking in China, where H. pylori prevalence is nearly 50%. Thus, we performed a network meta-analysis to compare therapeutic regimens. METHODS Data extracted from eligible randomized controlled trials from January 2000 to September 2021 were entered into a Bayesian hierarchical random-effects model to evaluate the efficacy and safety of H. pylori eradication regimens. RESULTS This study included 101 trials involving 21,745 patients. Vonoprazan-bismuth-containing quadruple therapy (VBQT) ranked the highest [surfaces under cumulative ranking curve (SUCRA), 83.64%], followed by high-dose amoxicillin dual therapy (HDDT) [SUCRA, 79.70%, odds ratio (OR)=1.31, 95% credible interval (CrI) (0.36, 4.72)] and proton pump inhibitor-based bismuth-containing quadruple therapy (BQT) [SUCRA, 63.59%, OR=1.59, 95% CrI (0.48, 5.24)]. HDDT [OR=2.47, 95% CrI (1.51, 4.06)], BQT [OR=2.04, 95% CrI (1.69, 2.47)], concomitant quadruple nonbismuth therapy (CT) [OR=1.93, 95% CrI (1.19, 3.15)], and sequential therapy (ST) [OR=1.86, 95% CrI (1.50, 2.32)] had higher eradication rates than standard triple therapy (TT). ST (SUCRA, 82.52%) and VBQT (SUCRA, 83.89%) had the highest eradication rate before and after 2010 in the effectiveness ranking, respectively. Furthermore, the H. pylori eradication rate of patients receiving 14-day BQT treatment was higher than that of 10-day BQT regimen [OR=2.55, 95% CI (1.84, 3.53)] and 7-day BQT regimen [OR=3.64, 95% CI (2.64, 5.01)]. CONCLUSIONS The TT regimen was not an optimal choice in China for H. pylori eradication; VBQT, HDDT, and BQT showed better efficacy. After 2010, there is a trend toward significance that VBQT provided a higher H. pylori eradication rate in China, but with only 1 randomized controlled trial. Thus, more supportive real-world data are needed to confirm its effectiveness.
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Affiliation(s)
- Jing Li
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - Huiying Shi
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - Fang Zhou
- Takeda Pharmaceutical Company Ltd., Shanghai
| | - Li Xie
- Takeda Pharmaceutical Company Ltd., Beijing, China
| | - Rong Lin
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
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Guan JL, Feng LN, Han YY, Xia SH, Zhao K, Zhang MY, Zhang Y, Dong RN, Huang YJ, Li JY, Liao JZ, Li PY. Global research trends and hotspots of Helicobacter pylori eradication based on clinical trial registration platforms: A cross-sectional analysis. Clin Res Hepatol Gastroenterol 2023; 47:102233. [PMID: 37879535 DOI: 10.1016/j.clinre.2023.102233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/15/2023] [Accepted: 10/23/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND This study aimed to obtain an overview of clinical trials on Helicobacter pylori (H. pylori) eradication and analyze the global trends and hotspots in this field. METHODS We collected the data from clinical trials focused on H. pylori eradication in the primary clinical trial registries from 2000 to 2022 in the world. Then we analyzed the research trends and hotspots in H. pylori eradication regimens in different regions at different periods. RESULTS A total of 780 clinical trials were included, which were mainly conducted in Asia (682), followed by Europe (59), Africa (20), North America (16), South America (7), Oceania (2). The most active countries were China (343), Iran (140), South Korea (63), and Japan (73). "Bismuth-containing quadruple therapy (BQT)" was the most studied regimen (159, 20.38 %). Additionally, clinical trials focused on potassium-competitive acid blockers (P-CABs)-based therapy, probiotics, and high-dose dual therapy (HDDT) were constantly increasing. BQT received the most attention in China (26.53 %) and Iran (22.14 %), while it was tailored therapy in South Korea (23.29 %). P-CABs-based therapy was the main reseach hotspot in Japan (61.90 %). CONCLUSION How to eradicate H. pylori infection has been a heated research topic. BQT, P-CABs-based therapy, probiotics, and HDDT attracted the most attention in recent years.
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Affiliation(s)
- Jia-Lun Guan
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li-Na Feng
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying-Ying Han
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Su-Hong Xia
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhao
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ming-Yu Zhang
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Zhang
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ruo-Nan Dong
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu-Jie Huang
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ji-Yan Li
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia-Zhi Liao
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Pei-Yuan Li
- Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Gastroenterology, Wenchang People's Hospital, Wenchang, China.
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Zhou S, Zhao FL, Wang SH, Wang YR, Hong Y, Zhou Q, Geng PW, Luo QF, Cai JP, Dai DP. Assessments of CYP‑inhibition‑based drug-drug interaction between vonoprazan and poziotinib in vitro and in vivo. PHARMACEUTICAL BIOLOGY 2023; 61:356-361. [PMID: 36728978 PMCID: PMC9897767 DOI: 10.1080/13880209.2023.2173253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 11/16/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
CONTEXT Poziotinib and vonoprazan are two drugs mainly metabolized by CYP3A4. However, the drug-drug interaction between them is unknown. OBJECTIVE To study the interaction mechanism and pharmacokinetics of poziotinib on vonoprazan. MATERIALS AND METHODS In vitro experiments were performed with rat liver microsomes (RLMs) and the contents of vonoprazan and its metabolite were then determined with UPLC-MS/MS after incubation of RLMs with vonoprazan and gradient concentrations of poziotinib. For the in vivo experiment, rats in the poziotinib treated group were given 5 mg/kg poziotinib by gavage once daily for 7 days, and the control group was only given 0.5% CMC-Na. On Day 8, tail venous blood was collected at different time points after the gavage administration of 10 mg/kg vonoprazan, and used for the quantification of vonoprazan and its metabolite. DAS and SPSS software were used for the pharmacokinetic and statistical analyses. RESULTS In vitro experimental data indicated that poziotinib inhibited the metabolism of vonoprazan (IC50 = 10.6 μM) in a mixed model of noncompetitive and uncompetitive inhibition. The inhibitory constant Ki was 0.574 μM and the binding constant αKi was 2.77 μM. In vivo experiments revealed that the AUC(0-T) (15.05 vs. 90.95 μg/mL·h) and AUC(0-∞) (15.05 vs. 91.99 μg/mL·h) of vonoprazan increased significantly with poziotinib pretreatment. The MRT(0-∞) of vonoprazan increased from 2.29 to 5.51 h, while the CLz/F value decreased from 162.67 to 25.84 L/kg·h after pretreatment with poziotinib. CONCLUSIONS Poziotinib could significantly inhibit the metabolism of vonoprazan and more care may be taken when co-administered in the clinic.
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Affiliation(s)
- Shan Zhou
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
| | - Fang-Ling Zhao
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
- Peking University Fifth School of Clinical Medicine, Beijing, China
| | - Shuang-Hu Wang
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Yi-Ran Wang
- Peking University Fifth School of Clinical Medicine, Beijing, China
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Yun Hong
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Quan Zhou
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Pei-Wu Geng
- Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People’s Hospital of Lishui, Lishui, China
| | - Qing-Feng Luo
- Department of Gastroenterology, Beijing Hospital, National Center of Gerontology, Beijing, China
- Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
| | - Da-Peng Dai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital, National Center of Gerontology of National Health Commission, Beijing, China
- Peking University Fifth School of Clinical Medicine, Beijing, China
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Chen D, Hagen SJ, Boyce M, Zhao CM. Neuroendocrine mechanism of gastric acid secretion: Historical perspectives and recent developments in physiology and pharmacology. J Neuroendocrinol 2023; 35:e13305. [PMID: 37317882 PMCID: PMC10656367 DOI: 10.1111/jne.13305] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/24/2023] [Accepted: 05/10/2023] [Indexed: 06/16/2023]
Abstract
The physiology of gastric acid secretion is one of the earliest subjects in medical literature and has been continuously studied since 1833. Starting with the notion that neural stimulation alone drives acid secretion, progress in understanding the physiology and pathophysiology of this process has led to the development of therapeutic strategies for patients with acid-related diseases. For instance, understanding the physiology of parietal cells led to the developments of histamine 2 receptor blockers, proton pump inhibitors (PPIs), and recently, potassium-competitive acid blockers. Furthermore, understanding the physiology and pathophysiology of gastrin has led to the development of gastrin/CCK2 receptor (CCK2 R) antagonists. The need for refinement of existing drugs in patients have led to second and third generation drugs with better efficacy at blocking acid secretion. Further understanding of the mechanism of acid secretion by gene targeting in mice has enabled us to dissect the unique role for each regulator to leverage and justify the development of new targeted therapeutics for acid-related disorders. Further research on the mechanism of stimulation of gastric acid secretion and the physiological significances of gastric acidity in gut microbiome is needed in the future.
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Affiliation(s)
- Duan Chen
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Susan J Hagen
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | | | - Chun-Mei Zhao
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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11
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Najah H, Edelmuth RCL, Riascos MC, Grier A, Al Asadi H, Greenberg JA, Miranda I, Crawford CV, Finnerty BM, Fahey TJ, Zarnegar R. Long-term potassium-competitive acid blockers administration causes microbiota changes in rats. Surg Endosc 2023; 37:7980-7990. [PMID: 37452210 DOI: 10.1007/s00464-023-10269-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 06/29/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Vonoprazan is a new potassium-competitive acid blocker (P-CAB) that was recently approved by the FDA. It is associated with a fast onset of action and a longer acid inhibition time. Vonoprazan-containing therapy for helicobacter pylori eradication is highly effective and several studies have demonstrated that a vonoprazan-antibiotic regimen affects gut microbiota. However, the impact of vonoprazan alone on gut microbiota is still unclear.Please check and confirm the authors (Maria Cristina Riascos, Hala Al Asadi) given name and family name are correct. Also, kindly confirm the details in the metadata are correct.Yes they are correct. METHODS: We conducted a prospective randomized 12-week experimental trial with 18 Wistar rats. Rats were randomly assigned to one of 3 groups: (1) drinking water as negative control group, (2) oral vonoprazan (4 mg/kg) for 12 weeks, and (3) oral vonoprazan (4 mg/kg) for 4 weeks, followed by 8 weeks off vonoprazan. To investigate gut microbiota, we carried out a metagenomic shotgun sequencing of fecal samples at week 0 and week 12.Please confirm the inserted city and country name is correct for affiliation 2.Yes it's correct. RESULTS For alpha diversity metrics at week 12, both long and short vonoprazan groups had lower Pielou's evenness index than the control group (p = 0.019); however, observed operational taxonomic units (p = 0.332) and Shannon's diversity index (p = 0.070) were not statistically different between groups. Beta diversity was significantly different in the three groups, using Bray-Curtis (p = 0.003) and Jaccard distances (p = 0.002). At week 12, differences in relative abundance were observed at all levels. At phylum level, short vonoprazan group had less of Actinobacteria (log fold change = - 1.88, adjusted p-value = 0.048) and Verrucomicrobia (lfc = - 1.76, p = 0.009).Please check and confirm that the author (Ileana Miranda) and their respective affiliation 3 details have been correctly identified and amend if necessary.Yes it's correct. At the genus level, long vonoprazan group had more Bacteroidales (lfc = 5.01, p = 0.021) and Prevotella (lfc = 7.79, p = 0.001). At family level, long vonoprazan group had more Lactobacillaceae (lfc = 0.97, p = 0.001), Prevotellaceae (lfc = 8.01, p < 0.001), and less Erysipelotrichaceae (lfc = - 2.9, p = 0.029). CONCLUSION This study provides evidence that vonoprazan impacts the gut microbiota and permits a precise delineation of the composition and relative abundance of the bacteria at all different taxonomic levels.
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Affiliation(s)
- Haythem Najah
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA.
| | - Rodrigo C L Edelmuth
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA
- Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Maria Cristina Riascos
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA
| | - Alex Grier
- Microbiome Core Lab of Weill Cornell Medicine, New York, NY, USA
| | - Hala Al Asadi
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA
| | - Jacques A Greenberg
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA
| | - Ileana Miranda
- Laboratory of Comparative Pathology (LCP), Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College, The Rockefeller University, New York, NY, USA
| | - Carl V Crawford
- Division of Gastroenterology and Hepatology, Department of Medicine, New York-Presbyterian Hospital, Weill Cornell Medical College, New York, NY, USA
| | - Brendan M Finnerty
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA
| | - Thomas J Fahey
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA
| | - Rasa Zarnegar
- Division of Endocrine & Minimally Invasive Surgery, Department of Surgery, New York-Presbyterian Hospital, Weill Cornell Medical College, 525 East 68th Street, K-836, New York, NY, 10065, USA
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12
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Du RC, Ouyang YB, Lu NH, Hu Y. Research trends on vonoprazan-based therapy for Helicobacter pylori eradication: A bibliometric analysis from 2015 to 2023. Helicobacter 2023; 28:e13012. [PMID: 37515414 DOI: 10.1111/hel.13012] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/10/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND Vonoprazan is an emerging option for the treatment of Helicobacter pylori infection. We aimed to assess the research trends and hotspots of vonoprazan-based therapy for H. pylori eradication through bibliometric analysis. MATERIALS AND METHODS Vonoprazan-based studies for eradicating H. pylori published from 2015 to 2023 were extracted from the Web of Science using a combination of the search terms "H. pylori" and "vonoprazan." Each study was weighted according to the number of included patients. RESULTS A total of 65 studies were included. Japan was the most productive and cooperative country, accounting for 69.2% of publications. Vonoprazan in combination with amoxicillin and clarithromycin (41.8%) was most used for eradicating H. pylori, followed by vonoprazan in combination with amoxicillin (20.4%) and vonoprazan in combination with amoxicillin and metronidazole (19.4%). The eradication rates for first-line vonoprazan-based therapies by intention to treat were: dual therapy (82.9%, 95% CI: 77.7%-88.0%), triple (83.3%, 95% CI: 79.7%-86.8%) and quadruple therapy (91.5%, 95% CI: 85.5%-97.4%), and per protocol: dual therapy (86.1%, 95% CI: 81.5%-90.7%), triple (89.3%, 95% CI: 87.9%-90.6%) and quadruple therapy (94.0%, 95% CI: 88.6%-99.4%). Vonoprazan was superior to proton pump inhibitors in triple therapy regarding empirical therapy (RR = 1.18, 95% CI, 1.14-1.22, p < 0.01) and clarithromycin-resistant group (RR = 1.71, 95% CI, 1.33-2.20, p < 0.01), but there is no significant difference between triple therapy and dual therapy (RR = 1.02, 95% CI, 0.98-1.07, p = 0.33). CONCLUSIONS Vonoprazan has been widely used for H. pylori eradication. Further studies are needed to optimize the best duration and dosage of vonoprazan-based regimens in different regions.
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Affiliation(s)
- Ren-Chun Du
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yao-Bin Ouyang
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Nong-Hua Lu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yi Hu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Surgery, The Chinese University of Hong Kong, Hong Kong, China
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Ku JM, Cho JH, Kim K, Kim JY, Kim JY, Kim J, Cha H, Cheon B. JP-1366: A novel and potent potassium-competitive acid blocker that is effective in the treatment of acid-related diseases. Pharmacol Res Perspect 2023; 11:e01090. [PMID: 37147903 PMCID: PMC10163344 DOI: 10.1002/prp2.1090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 05/07/2023] Open
Abstract
The global prevalence of GERD is substantially increasing each year, and GERD is a chronic disease that reduces the quality of life of patients. The efficacy of conventional drugs is diverse, and most require long-term or lifetime administration; thus, the development of more effective therapeutic agents is needed. Herein, a more effective treatment for GERD was tested. We investigated whether JP-1366 affected gastric H+/K+-ATPase activity and used the Na+/K+-ATPase assay to confirm the selectivity of H+/K+-ATPase inhibition. To clarify the mechanism of enzyme inhibition, JP-1366 and TAK-438 were analyzed by Lineweaver-Burk. Also, we investigated the effects of JP-1366 in various models involving reflux esophagitis. We found that JP-1366 mediates strong, selective, and dose-dependent inhibition of H+/K+-ATPase. We found that JP-1366 significantly suppressed gastric acid secretion in histamine-treated pylorus-ligated rats in a dose-dependent manner. Additionally, we confirmed that JP-1366 inhibited histamine-stimulated gastric acid secretion in the HPD model. JP-1366 exhibited a more than 2-fold higher inhibitory effect on esophageal injury than TAK-438 in GERD lesions and had a more potent inhibitory effect in indomethacin- or aspirin-induced gastric ulcer rat models than TAK-438. Additionally, JP-1366 inhibited gastric ulcers. These results support the possibility that JP-1366 is a good candidate drug for treating acid-related diseases.
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Affiliation(s)
- Jin Mo Ku
- Pharmacological Toxicology Laboratory, Jeil Pharmaceutical, Yongin-si, South Korea
| | - Jin Hee Cho
- Pharmacological Toxicology Laboratory, Jeil Pharmaceutical, Yongin-si, South Korea
| | - Kangjeon Kim
- Pharmacological Toxicology Laboratory, Jeil Pharmaceutical, Yongin-si, South Korea
| | - Ji Yoon Kim
- Division of New Drug Development, Jeil Pharmaceutical, Yongin-si, South Korea
| | - Jong Yup Kim
- Division of New Drug Development, Jeil Pharmaceutical, Yongin-si, South Korea
| | - John Kim
- Onconic Therapeutics Inc, Seoul, South Korea
| | - Hyunju Cha
- Onconic Therapeutics Inc, Seoul, South Korea
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St. Onge E, Phillips B. Vonoprazan: A New Potassium-Competitive Acid Blocker. J Pharm Technol 2023; 39:139-146. [PMID: 37323765 PMCID: PMC10268044 DOI: 10.1177/87551225231166531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023] Open
Abstract
Objective: To review the safety, efficacy, and tolerability of vonoprazan for the treatment of Helicobacter pylori infection in adults. Data Sources: A literature search was performed through PubMed using the following key terms: vonoprazan, Voquezna, TAK-438, potassium-competitive acid blocker, H pylori, and gastrointestinal. Study Selection and Data Extraction: Selected articles included those which described clinical studies of the pharmacology, pharmacokinetics, efficacy, safety, or tolerability of vonoprazan. Data Synthesis: Vonoprazan works by competing with potassium on the proton pump to inhibit gastric acid secretion. Phase 3 clinical trials have shown that vonoprazan is noninferior to proton pump inhibitors (PPIs) as a component of H pylori eradication regimens. Vonoprazan has also shown promise in duodenal ulcer-healing rates and in reducing symptoms of heartburn. Common adverse effects associated with vonoprazan include nasopharyngitis, diarrhea, constipation, flatulence, dyspepsia, headache, and abdominal pain. Conclusion: Clinical practice guidelines recommend PPIs as the antisecretory agent of choice in H pylori eradication regimens with histamine-2 receptor antagonists (H2RAs) as potential alternatives. However, the use of either class of medications may be limited by adverse effects, drug interactions, and tolerability. Potassium-competitive acid blockers (P-CABs), like vonoprazan, may be safe and effective alternative antisecretory agents for H pylori eradication regimens, as well as other gastrointestinal disorders.
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Affiliation(s)
- Erin St. Onge
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL, USA
| | - Bradley Phillips
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL, USA
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Haruma K, Kinoshita Y, Yao T, Kushima R, Akiyama J, Aoyama N, Kanoo T, Miyata K, Kusumoto N, Uemura N. Randomised clinical trial: 3-year interim analysis results of the VISION trial to evaluate the long-term safety of vonoprazan as maintenance treatment in patients with erosive oesophagitis. BMC Gastroenterol 2023; 23:139. [PMID: 37127558 PMCID: PMC10152792 DOI: 10.1186/s12876-023-02772-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 04/18/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND VISION is a randomised, phase 4, open-label, parallel-group, multicentre study conducted in 33 centres in Japan. The aim of this study was to assess the long-term safety of vonoprazan for maintenance treatment of healed erosive oesophagitis versus lansoprazole. METHODS Patients with endoscopically diagnosed erosive oesophagitis were randomised 2:1 to once-daily vonoprazan 20 mg or lansoprazole 30 mg, for a 4- to 8-week healing phase. Patients with endoscopically confirmed healing entered a 260-week maintenance phase with a once-daily starting dose of vonoprazan 10 mg or lansoprazole 15 mg. Primary endpoint was change in gastric mucosal histopathology. RESULTS Of 208 patients (vonoprazan, n = 139; lansoprazole, n = 69) entering the healing phase, 202 entered the maintenance phase (vonoprazan, n = 135; lansoprazole, n = 67). At 3 years, 109 vonoprazan-treated and 58 lansoprazole-treated patients remained on treatment. Histopathological evaluation of gastric mucosa showed that hyperplasia of parietal, foveolar and G cells was more common with vonoprazan than lansoprazole at week 156 of the maintenance phase. There was no marked increase in the occurrence of parietal, foveolar and G cell hyperplasia among patients in the vonoprazan group from week 48 to week 156. Histopathological evaluation of the gastric mucosa also showed no neoplastic changes in either group. No new safety issues were identified. CONCLUSIONS In this interim analysis of VISION, no new safety concerns were identified in Japanese patients with healed erosive oesophagitis receiving vonoprazan or lansoprazole as maintenance treatment for 3 years. (CT.gov identifier: NCT02679508; JapicCTI-163153; Japan Registry of Clinical Trials: jRCTs031180040).
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Affiliation(s)
- Ken Haruma
- Department of General Internal Medicine 2, Kawasaki Medical School, General Medical Center, Okayama, Japan
| | - Yoshikazu Kinoshita
- General Internal Medicine, Hyogo Prefectural Harima-Himeji General Medical Center, Himeji, Hyogo, Japan
| | - Takashi Yao
- Department of Human Pathology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ryoji Kushima
- Department of Clinical Laboratory Medicine, Shiga University of Medical Science Hospital, Otsu, Shiga, Japan
| | - Junichi Akiyama
- Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Nobuo Aoyama
- GI Endoscopy and IBD Center, Aoyama Medical Clinic, Kobe, Hyogo, Japan
| | | | | | | | - Naomi Uemura
- Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine, Kohnodai Hospital, Ichikawa, Chiba, Japan
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Ishii M, Kawai T, Tsujita K, Igarashi A, Suzuki M, Deguchi H, Fernandez J. Cost-Effectiveness of Vonoprazan Compared With Proton Pump Inhibitors in Patients Taking Low-Dose Aspirin for Secondary Prevention of Cardiovascular Events in Japan. Circ J 2023; 87:348-359. [PMID: 36002313 DOI: 10.1253/circj.cj-22-0127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Low-dose aspirin (LDA) is used to prevent recurrent cardiovascular (CV) events, but is associated with upper gastrointestinal (GI) bleeding; concomitant use of a proton pump inhibitor (PPI) reduces this risk. This study aimed to assess the cost-effectiveness of vonoprazan compared with PPIs (lansoprazole and esomeprazole) in patients taking LDA for secondary prevention of CV events.Methods and Results: A Markov simulation model was developed to predict the number of GI bleeding and acute CV events using 3 strategies (vonoprazan+LDA, esomeprazole+LDA, and lansoprazole+LDA), which were translated into quality-adjusted life-years (QALYs) and costs. Transition probabilities and utilities were derived from the results of published literature, and medical costs were based on the Japanese National Health Insurance fee table and claims databases in 2020. Outcomes were projected over 30 years starting at age 65 years and discounted at 2% annually. Expected costs with esomeprazole 20 mg, lansoprazole 15 mg and vonoprazan 10 mg were JPY 1,225,657, JPY 943,930, and JPY 1,059,510, respectively. The QALY gain for vonoprazan vs. esomeprazole was 0.35, thus vonoprazan was dominant against esomeprazole. The QALY gain for vonoprazan vs. lansoprazole was 0.29 and the incremental cost-effectiveness ratio (ICER) was JPY 398,551, thus, vonoprazan was more cost-effective than lansoprazole. CONCLUSIONS Vonoprazan is dominant or cost-effective compared with esomeprazole and lansoprazole in patients taking LDA for secondary prevention of CV events.
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Affiliation(s)
- Masanobu Ishii
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Takashi Kawai
- Department of Gastroenterological Endoscopy, Tokyo Medical University
| | - Kenichi Tsujita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Ataru Igarashi
- Department of Health Economics and Outcomes Research, Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Manabu Suzuki
- Japan Medical Office, Takeda Pharmaceutical Company Limited
| | - Hisato Deguchi
- Japan Medical Office, Takeda Pharmaceutical Company Limited
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Xu W, Bai Z, Shang Y, Wang J, Wong Y, Qi X. Incidence and type of adverse events in patients taking vonoprazan: A systematic review and meta-analysis. Therap Adv Gastroenterol 2023; 16:17562848231167858. [PMID: 37113190 PMCID: PMC10126681 DOI: 10.1177/17562848231167858] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/20/2023] [Indexed: 04/29/2023] Open
Abstract
Background Vonoprazan, a novel acid-suppressive drug, is non-inferior to proton pump inhibitors (PPIs) for the management of gastric acid-related diseases. However, the safety of vonoprazan has not been systematically evaluated yet. Objectives To elucidate the incidence and type of adverse events (AEs) in patients taking vonoprazan. Design Systematic review and meta-analysis. Data sources and methods PubMed, EMBASE, and Cochrane Library databases were searched for all studies reporting the safety of vonoprazan. The incidences of any AEs, drug-related AEs, serious AEs, AEs leading to drug discontinuation, and common AEs were pooled. Odds ratios (ORs) were calculated to compare the incidence of AEs between patients taking vonoprazan and PPIs. Results Seventy-seven studies were included. The pooled incidences of any AEs, drug-related AEs, serious AEs, and AEs leading to drug discontinuation were 20, 7, 1, and 1%, respectively. The incidences of any AEs (OR = 0.96, p = 0.66), drug-related AEs (OR = 1.10, p = 0.44), serious AEs (OR = 1.14, p = 0.36), and AEs leading to drug discontinuation (OR = 1.09, p = 0.55) were not significantly different between patients taking vonoprazan and PPIs. In subgroup analyses, patients with peptic ulcer disease (PUD) had higher incidences of any AEs, serious AEs, and AEs leading to drug discontinuation than those with gastroesophageal reflux disease (GERD), Helicobacter pylori (H. pylori) infection, and artificial ulcer after gastric endoscopic submucosal dissection (ESD), but patients with H. pylori infection had a higher incidence of drug-related AEs than those with PUD, GERD, and artificial ulcer after gastric ESD. The incidence of AEs was higher in patients taking long-term use of vonoprazan than those taking short-term use of vonoprazan. Conclusion Vonoprazan is well tolerated and shows similar safety compared to PPIs. The safety of vonoprazan may be primarily influenced by its indications and duration. Registration PROSPERO CRD42022314982.
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Affiliation(s)
| | | | | | | | - Yujun Wong
- Department of Gastroenterology and Hepatology, Changi General Hospital, Singapore, Singapore
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Kawai T, Suzuki C, Honda Y, Fernandez JL. Long-term safety and effectiveness of vonoprazan for prevention of gastric and duodenal ulcer recurrence in patients on nonsteroidal anti-inflammatory drugs in Japan: a 12-month post-marketing surveillance study. Expert Opin Drug Saf 2022:1-7. [PMID: 36264125 DOI: 10.1080/14740338.2023.2136163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND This study assessed the safety and effectiveness of vonoprazan for prevention of duodenal and gastric ulcer recurrence in patients on long-term nonsteroidal anti-inflammatory drugs (NSAIDs) in routine clinical practice. RESEARCH DESIGN AND METHODS This 12-month, prospective, observational study (145 sites, Japan, September 2016-April 2020) analyzed patients with a history of gastric or duodenal ulcer who started once-daily vonoprazan and were receiving NSAIDs for pain or low-dose aspirin for thrombosis/embolism suppression. The primary outcome was the incidence of adverse drug reactions (ADRs). RESULTS Most patients (86.7% [1099/1268]) received vonoprazan for at least 6 months. Most patients (98.6% [1250/1268]) received the 10-mg dose of vonoprazan, 38.3% (486/1268) received cyclooxygenase-2 inhibitors, and 61.7% (782/1268) received other NSAIDs. The overall incidence of ADRs was 0.71% (9/1268). Most commonly reported ADRs were gastrointestinal (0.32%), nervous system (0.16%), and hepatobiliary system (0.16%) disorders. The overall incidence of gastric or duodenal ulcer recurrence was 1.04% (95% CI 0.56-1.78). CONCLUSIONS No new safety concerns were reported for vonoprazan for prevention of secondary ulcer or bleeding in patients receiving long-term NSAIDs. Vonoprazan was effective for preventing NSAID-related peptic ulcer recurrence in this real-world study. TRIAL REGISTRATION ClinicalTrials.gov: NCT03214198; Japan Pharmaceutical Information Center Clinical Trials Information: JapicCTI-163436.
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Affiliation(s)
- Takashi Kawai
- Endoscopy Center, Tokyo Medical University Hospital, Tokyo, Japan
| | - Chihiro Suzuki
- Japan Medical Office, Takeda Pharmaceutical Company Limited, Tokyo, Japan
| | - Youichirou Honda
- Japan Medical Office, Takeda Pharmaceutical Company Limited, Tokyo, Japan
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19
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Zhang M, Xiao Y, Chen M. The role of vonoprazan in patients with erosive esophagitis. Therap Adv Gastroenterol 2022; 15:17562848221122623. [PMID: 36117573 PMCID: PMC9478709 DOI: 10.1177/17562848221122623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 08/01/2022] [Indexed: 02/04/2023] Open
Abstract
Acid suppression is the primary therapy for erosive esophagitis (EE). Although proton pump inhibitors (PPIs) are considered as the first-line medication for EE, 10-20% of patients with Los Angeles C and D grade EE do not gain complete mucosal healing and symptom control despite 8-week double-dose PPI treatment. Vonoprazan is a novel potassium-competitive acid blocker (P-CAB), which blocks the H+, K+-adenosine triphosphatase enzymes in a K+-competitive and reversible manner. Vonoprazan exhibits different pharmacological and pharmacokinetic profiles from conventional PPIs, and has a rapid, potent and sustained acid inhibitory effect. In this review, we summarized and discussed current evidence regarding the role of vonoprazan in terms of mucosal healing, maintaining remission and symptom relief for the management of EE, including the initial and maintenance treatment of EE, as well as for PPI-resistant EE patients. Safety concerns and cost-effectiveness analysis of vonoprazan were also mentioned in the article. As a potent and well-tolerated acid blocker, vonoprazan has the potential to become a novel option for the management of EE.
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Affiliation(s)
- Mengyu Zhang
- Department of Gastroenterology, The First
Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong
Province, China
| | - Yinglian Xiao
- Department of Gastroenterology, The First
Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong
Province, China
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20
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Wang MS, Gong Y, Zhuo LS, Shi XX, Tian YG, Huang CK, Huang W, Yang GF. Distribution- and Metabolism-Based Drug Discovery: A Potassium-Competitive Acid Blocker as a Proof of Concept. Research (Wash D C) 2022; 2022:9852518. [PMID: 35958113 PMCID: PMC9343080 DOI: 10.34133/2022/9852518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/29/2022] [Indexed: 11/06/2022] Open
Abstract
Conventional methods of drug design require compromise in the form of side effects to achieve sufficient efficacy because targeting drugs to specific organs remains challenging. Thus, new strategies to design organ-specific drugs that induce little toxicity are needed. Based on characteristic tissue niche-mediated drug distribution (TNMDD) and patterns of drug metabolism into specific intermediates, we propose a strategy of distribution- and metabolism-based drug design (DMBDD); through a physicochemical property-driven distribution optimization cooperated with a well-designed metabolism pathway, SH-337, a candidate potassium-competitive acid blocker (P-CAB), was designed. SH-337 showed specific distribution in the stomach in the long term and was rapidly cleared from the systemic compartment. Therefore, SH-337 exerted a comparable pharmacological effect but a 3.3-fold higher no observed adverse effect level (NOAEL) compared with FDA-approved vonoprazan. This study contributes a proof-of-concept demonstration of DMBDD and provides a new perspective for the development of highly efficient, organ-specific drugs with low toxicity.
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Affiliation(s)
- Ming-Shu Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Yi Gong
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Lin-Sheng Zhuo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Xing-Xing Shi
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Yan-Guang Tian
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Chang-Kang Huang
- Nanjing Shuohui Pharmatechnology Co., Ltd., Nanjing 210046, China
| | - Wei Huang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
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21
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Hou X, Meng F, Wang J, Sha W, Chiu CT, Chung WC, Gu L, Kudou K, Chong CF, Zhang S. Vonoprazan non-inferior to lansoprazole in treating duodenal ulcer and eradicating Helicobacter pylori in Asian patients. J Gastroenterol Hepatol 2022; 37:1275-1283. [PMID: 35342997 DOI: 10.1111/jgh.15837] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 02/15/2022] [Accepted: 03/11/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND AIM Duodenal ulcers, especially caused by increasingly drug-resistant Helicobacter pylori, are a concern in Asia. We compared oral vonoprazan versus lansoprazole for efficacy (healing duodenal ulcers) and safety in non-Japanese Asian patients. METHODS In this phase 3, randomized (1:1), double-blind, double-dummy, parallel-group, non-inferiority study (April 5, 2017, to July 19, 2019), patients with ≥ 1 endoscopically confirmed duodenal ulcer, at 52 hospitals (China, South Korea, and Taiwan), received vonoprazan 20 mg once daily (QD) or lansoprazole 30 mg QD for 6 weeks maximum. Patients with H. pylori received bismuth-containing quadruple therapy including vonoprazan 20 mg twice daily (BID) or lansoprazole 30 mg BID, for 2 weeks, followed by vonoprazan or lansoprazole monotherapy QD (4 weeks maximum). Endpoints were endoscopically confirmed duodenal ulcer healing (Week 4/6; primary) and H. pylori eradication (4 weeks post-treatment; secondary); non-inferiority margins were -6% and -10%, using a two-sided 95% confidence interval (CI). RESULTS Of 533 enrolled patients, one was lost to follow-up and one withdrew (full analysis set: 531 patients [vonoprazan, n = 263; lansoprazole, n = 268]; 85.4% = H. pylori positive). Vonoprazan was non-inferior to lansoprazole for duodenal ulcer healing (96.9% vs 96.5%; difference 0.4% [95% CI -3.00, 3.79]). H. pylori eradication rates were 91.5% (vonoprazan) and 86.8% (lansoprazole; difference 4.7% [95% CI -1.28, 10.69]). Vonoprazan and lansoprazole were well tolerated, with similar safety profiles, no new safety signals; no deaths occurred. CONCLUSIONS Vonoprazan was well tolerated and non-inferior to lansoprazole for duodenal ulcer healing and achieved H. pylori eradication above the clinically meaningful threshold (90%), in non-Japanese Asian patients.
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Affiliation(s)
- Xiaohua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fandong Meng
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jiangbin Wang
- China-Japan Union Hospital, Jilin University, Changchun, China
| | - Weihong Sha
- Department of Gastroenterology and Hepatology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangdong, China
| | - Cheng-Tang Chiu
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan.,Chang Gung University, College of Medicine, Taoyuan, Taiwan
| | - Woo Chul Chung
- St Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Liqun Gu
- Takeda Development Center Asia, Shanghai, China
| | | | | | - Shutian Zhang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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22
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Savarino V, Antonioli L, Fornai M, Marabotto E, Demarzo MG, Zingone F, Ghisa M, Barberio B, Zentilin P, Ribolsi M, Savarino E. An update of pharmacology, efficacy, and safety of vonoprazan in acid-related disorders. Expert Rev Gastroenterol Hepatol 2022; 16:401-410. [PMID: 34550866 DOI: 10.1080/17474124.2021.1984878] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Patients with acid-related disorders (ARDs) of the upper digestive tract remain highly prevalent and need to be continuously investigated to improve their management. AREAS COVERED This review provides a summary of the most recent advancements in the treatment of ARDs with particular focus on the new drugs available to overcome the unmet needs of traditional therapies. EXPERT OPINION Proton pump inhibitors remain the best therapy in treating ARDs, but a consistent proportion of these patients continues to present mucosal lesions or to experience symptoms despite treatment. These cases pertain mainly to the most severe forms of erosive esophagitis or to non-erosive reflux disease. Also, the increasing rate of patients with H. pylori infection not responding to eradication therapy represents a difficult clinical condition. The recent advent of a new class of antisecretory drugs, such as the potassium competitive acid blockers and, among them the most studied vonoprazan, which are characterized by a better pharmacological profile than PPIs (rapid onset of action, longer lasting acid suppression, control of nocturnal acidity), has the potential to overcome the above-mentioned unmet needs. More research should be done to assess their efficacy in Western populations and their safety in patients treated in the long term.
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Affiliation(s)
- Vincenzo Savarino
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Luca Antonioli
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Matteo Fornai
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Elisa Marabotto
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Maria Giulia Demarzo
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Fabiana Zingone
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Matteo Ghisa
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Brigida Barberio
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Patrizia Zentilin
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Mentore Ribolsi
- Gastroenterology Unit, Departmental Faculty of Medicine and Surgery, Università Campus Bio-Medico Di Roma, Rome, Italy
| | - Edoardo Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
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23
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Abstract
A 71-year-old woman was admitted for the treatment of diffuse large B-cell lymphoma of the ileum. She had been taking lansoprazole but was switched to vonoprazan due to epigastric discomfort. Three weeks after starting vonoprazan intake, she had a convulsive seizure, and a blood test showed hypomagnesiemia. The cause of hypomagnesemia was considered to be malabsorption of magnesium from the intestinal tract associated with vonoprazan. After discontinuation of vonoprazan, the magnesium level quickly recovered, and the seizures did not relapse. It is important to consider the risk of hypomagnesemia in patients taking vonoprazan, even for a short period of time.
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Affiliation(s)
- Masayuki Aiba
- Department of Hematology, Hakodate Municipal Hospital, Japan
| | - Yutaka Tsutsumi
- Department of Hematology, Hakodate Municipal Hospital, Japan
| | - Jun Nagai
- Department of Hematology, Hakodate Municipal Hospital, Japan
| | - Takahiro Tateno
- Department of Hematology, Hakodate Municipal Hospital, Japan
| | - Shinichi Ito
- Department of Hematology, Hakodate Municipal Hospital, Japan
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24
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Xu WT, Xu XB, Ren TS, Qi XS. Vonoprazan for treatment of gastroesophageal reflux disease: Research advances. Shijie Huaren Xiaohua Zazhi 2021; 29:1248-1253. [DOI: 10.11569/wcjd.v29.i21.1248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Gastroesophageal reflux disease is a common gastrointestinal disease that can be effectively treated by drugs alone. Proton pump inhibitors are the currently mainstay drugs for the treatment of gastroesophageal reflux disease, but are insufficiently effective. Vonoprazan, which is a new type of drug that inhibits gastric acid secretion, has been employed for the management of gastroesophageal reflux disease. In this article, we comprehensively review the current evidence regarding clinical efficacy and safety of vonoprazan for the treatment of gastroesophageal reflux disease to guide the clinical decision.
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Affiliation(s)
- Wen-Tao Xu
- Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang 110840, Liaoning Province, China,Postgraduate College, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning Province, China
| | - Xiang-Bo Xu
- Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang 110840, Liaoning Province, China,Postgraduate College, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning Province, China
| | - Tian-Shu Ren
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang 110840, Liaoning Province, China
| | - Xing-Shun Qi
- Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang 110840, Liaoning Province, China,Postgraduate College, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning Province, China
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25
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Mulford DJ, Leifke E, Hibberd M, Howden CW. The Effect of Food on the Pharmacokinetics of the Potassium-Competitive Acid Blocker Vonoprazan. Clin Pharmacol Drug Dev 2021; 11:278-284. [PMID: 34431240 PMCID: PMC9291755 DOI: 10.1002/cpdd.1009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/22/2021] [Indexed: 12/13/2022]
Abstract
Herein, we report a food‐effect study of vonoprazan, an oral potassium‐competitive acid blocker. In a phase 1, randomized, open‐label, crossover study, healthy subjects received a single 20‐mg dose of vonoprazan either following an overnight fast or 30 minutes after a high‐fat breakfast. Plasma vonoprazan levels were determined at 0 hour and at 17 subsequent assessment points up to 48 hours after dosing. After a 5‐day washout, subjects received a second 20‐mg vonoprazan dose in the alternative fed/fasted state (identical process repeated). Twenty‐four subjects completed the study. Vonoprazan exposure was not meaningfully affected by food. Geometric mean ratios for maximum concentration, area under the concentration‐time curve from time 0 to 24 hours, and area under the plasma concentration–time curve extrapolated to infinity obtained under fed and fasting conditions were 1.05 (90% confidence interval, 0.98‐1.12), 1.13 (1.09‐1.18), and 1.15 (1.11‐1.19), respectively. Four subjects experienced 6 adverse events that were all mild and considered unrelated to the study drug. Vonoprazan can be administered without regard to food intake.
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Affiliation(s)
- Darcy J Mulford
- Research and Development, Phathom Pharmaceuticals, Buffalo Grove, Illinois, USA
| | - Eckhard Leifke
- Research and Development, Phathom Pharmaceuticals, Buffalo Grove, Illinois, USA
| | - Mark Hibberd
- Research and Development, Phathom Pharmaceuticals, Buffalo Grove, Illinois, USA
| | - Colin W Howden
- Division of Gastroenterology, University of Tennessee Health Science Center, Memphis, Tennessee, USA
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26
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Al-Qahtani SD, Al-nami SY. Copper oxide nanopowder modified carbon paste electrode for the voltammetric assay of vonoprazan. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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27
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Rokkas T, Gisbert JP, Malfertheiner P, Niv Y, Gasbarrini A, Leja M, Megraud F, O'Morain C, Graham DY. Comparative Effectiveness of Multiple Different First-Line Treatment Regimens for Helicobacter pylori Infection: A Network Meta-analysis. Gastroenterology 2021; 161:495-507.e4. [PMID: 33839101 DOI: 10.1053/j.gastro.2021.04.012] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/27/2021] [Accepted: 04/05/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS A number of double, triple, and quadruple therapies have been proposed as first-line empiric treatments for Helicobacter pylori infection. However, knowledge of their worldwide and regional comparative efficacy is lacking. We examined the comparative effectiveness of all empirically used first-line regimens tested against standard triple treatment using a network meta-analysis of published randomized controlled trials. METHODS Data extracted from eligible randomized controlled trials were entered into a Bayesian network meta-analysis to investigate the comparative efficacy of H pylori infection empiric first-line regimens and to explore their effectiveness rank order. The ranking probability for each regimen was evaluated by means of surfaces under cumulative ranking values. RESULTS Sixty-eight eligible randomized controlled trials were included, giving a total of 92 paired comparisons with 22,975 patients randomized to 8 first-line regimens. The overall results showed that only vonoprazan triple therapy and reverse hybrid therapy achieved cure rates of >90%. Levofloxacin triple therapy performed best in Western countries (eradication rate 88.5%). The comparative effectiveness ranking showed that vonoprazan triple therapy had the best results, whereas standard triple therapy was the least efficacious regimen (surfaces under cumulative ranking 92.4% vs 4.7% respectively; odds ratio, 3.80; 95% credible interval, 1.62-8.94). CONCLUSIONS For first-line empiric treatment of H pylori infection, vonoprazan triple therapy and reverse hybrid therapy achieved high eradication rates of >90%. Levofloxacin triple therapy achieved the highest eradication rates in Western countries. Standard triple therapy was the least efficacious regimen in this network meta-analysis.
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Affiliation(s)
- Theodore Rokkas
- Gastroenterology Clinic, Henry Dunant Hospital, Athens, Greece; Medical School, European University of Cyprus, Nicosia, Cyprus.
| | - Javier P Gisbert
- Gastroenterology Department, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Madrid, Spain
| | - Peter Malfertheiner
- Ludwig Maximilian Universität, Med Klinik II, München, Otto v Guericke Universität, Magdeburg, Germany
| | - Yaron Niv
- Ariel University, Ministry of Health, Ariel, Israel
| | - Antonio Gasbarrini
- Medicina Interna e Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli Istituto Di Ricovero E Cura A Carattere Scientifico, Universita Cattolica Del Sacro Cuore, Roma, Italy
| | - Marcis Leja
- Institute of Clinical and Preventive Medicine and Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Francis Megraud
- Inserm U1053, Université de Bordeaux and Laboratoire de Bactétiologie, Hôpital Pellegrin, Bordeaux, France
| | - Colm O'Morain
- Gastroenterology Clinic, Trinity College Dublin, Dublin, Ireland
| | - David Y Graham
- Department of Medicine, Michael E. DeBakey Veterans Affairs Medical Center and Baylor College of Medicine, Houston, Texas
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Kawai D, Takenaka R, Ishiguro M, Okanoue S, Gotoda T, Kono Y, Takemoto K, Tsugeno H, Fujiki S. Vonoprazan versus lansoprazole in the treatment of artificial gastric ulcers after endoscopic submucossal dissection: a randomized, open-label trial. BMC Gastroenterol 2021; 21:236. [PMID: 34022796 PMCID: PMC8141195 DOI: 10.1186/s12876-021-01822-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 05/19/2021] [Indexed: 12/15/2022] Open
Abstract
Background Vonoprazan is more potent and longer acting than traditional proton pump inhibitor. Although vonoprazan is expected to be superior to proton pump inhibitor, its efficacy in the treatment of gastric ulcers following endoscopic submucosal dissection (ESD) is not fully understood. The aim of this study was to evaluate the effectiveness of vonoprazan in artificial ulcer healing following ESD. Methods Patients with gastric tumors were randomly assigned to the vonoprazan group (group V) or lansoprazole group (group L) after ESD. Patients received intravenous lansoprazole (30 mg) twice on the day of ESD. Thereafter, patients were treated with vonoprazan (20 mg/day) in group V or lansoprazole (30 mg/day) in group L. Esophagogastroduodenoscopy was performed 4 and 8 weeks after the ESD. Results A total of 168 patients were analyzed. The 4-week healing rate for artificial ulcer was not significantly higher in group V versus group L (17/85, 20.0% vs. 14/83, 16.9%, respectively). In addition, there were no significant differences between the 4-week shrinkage rates between the two groups. Postoperative bleeding occurred in none of the patients in group V and three in group L. One patient in group V presented delayed perforation 2 days after ESD. Conclusions Vonoprazan might not be superior to lansoprazole in the healing of artificial gastric ulcer after ESD. Trial registration: University hospital Medical Information Network (registration number: UMIN000016642), Registered 27 February 2015, https://www.umin.ac.jp/ctr/index-j.htm.
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Affiliation(s)
- Daisuke Kawai
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
| | - Ryuta Takenaka
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan.
| | - Mikako Ishiguro
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
| | - Shotaro Okanoue
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
| | - Tatsuhiro Gotoda
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
| | - Yoshiyasu Kono
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
| | - Koji Takemoto
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
| | - Hirofumi Tsugeno
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
| | - Shigeatsu Fujiki
- Department of Gastroenterology, Tsuyama Chuo Hospital, 1756, Kawasaki, Tsuyama, Okayama, 708-0841, Japan
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29
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Kasai T, Suzuki S, Kusano C, Ikehara H, Ichijima R, Ohyauchi M, Kawamura M, Yoda Y, Nakahara M, Kawabe K, Gotoda T. High Body Mass Index Is Correlated with the Success of Vonoprazan-Based Second-Line Therapy for Helicobacter Pylori Infection. TOHOKU J EXP MED 2021; 253:85-94. [PMID: 33536385 DOI: 10.1620/tjem.253.85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Eradication of Helicobacter pylori (Hp) is necessary for preventing peptic ulcers and stomach cancer. The potassium-competitive acid blocker vonoprazan is a gastric acid secretion inhibitor that improves the success rate of Hp eradication through its immediate and persistent inhibition of acid excretion. In Japan, first-line treatment involves a regimen in which vonoprazan is combined with amoxicillin and clarithromycin, while second-line treatment involves vonoprazan combined with amoxicillin and metronidazole. However, in contrast to the vonoprazan-based first-line therapy, no studies have investigated the factors influencing the success of vonoprazan-based second-line therapy. In this study, we therefore aimed to investigate factors related to the success of vonoprazan-based second-line therapy. We analyzed the association between the success of Hp eradication and patient factors including metronidazole/amoxicillin minimal inhibitory concentrations (MICs). MICs were measured using the Hp isolated from each patient. A receiver operating characteristic (ROC) analysis was conducted to examine continuous variables and eradication success. We reviewed the records of 33 patients (age: 34-79 years, male/female: 22/11, and body mass index (BMI): 16.1-28.8 kg/m2) who underwent vonoprazan-based second-line therapy after failure of first-line therapy at seven Japanese facilities between October 2018 and June 2019. The eradication success rate was 81.8% (27/33). ROC analysis revealed an area under the curve and BMI cutoff value of 0.796 and 23.8 kg/m2, respectively. The eradication success rate was higher in patients with high BMI than in those with low BMI (p = 0.007). Our findings indicate that higher BMI is correlated with the success of vonoprazan-based second-line therapy.
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Affiliation(s)
- Toyotaka Kasai
- Department of Gastroenterology, Fukaya Red Cross Hospital
| | - Sho Suzuki
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine.,Department of Gastroenterology, Yuri Kumiai General Hospital
| | - Chika Kusano
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine
| | - Hisatomo Ikehara
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine
| | - Ryoji Ichijima
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine
| | | | | | | | | | - Koichi Kawabe
- Department of Gastroenterology, Fukaya Red Cross Hospital
| | - Takuji Gotoda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine
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Direct Comparison of the Efficacy and Safety of Vonoprazan Versus Proton-Pump Inhibitors for Gastroesophageal Reflux Disease: A Systematic Review and Meta-Analysis. Dig Dis Sci 2021; 66:19-28. [PMID: 32095968 DOI: 10.1007/s10620-020-06141-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/10/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Gastroesophageal reflux disease (GERD) is a common disorder, and is typically treated with proton-pump inhibitors (PPIs) as the recommended first-line therapy. Recently, a new potassium-competitive acid blocker, vonoprazan, was launched in Japan. It is uncertain whether the standard dose of vonoprazan 20 mg is superior to that of PPIs for GERD, so a direct comparison of the therapeutic effects and adverse events between vonoprazan 20 mg and PPIs is needed. METHODS MEDLINE, the Cochrane Central Register of Controlled Trials, and Embase were chosen as the literature sources. Randomized controlled trials for vonoprazan 20 mg and PPIs published in English were searched. Data from studies meeting the eligibility criteria were extracted individually by two researchers and compared to maintain consistency. RESULTS Fifty-six articles were identified in the databases, and one study was manually searched and added to the analysis, ultimately yielding six eligible studies. For the main analysis, the risk ratios (RR) of efficacy and adverse events between vonoprazan and PPIs were 1.06 (0.99-1.13) and 1.08 (0.96-1.22), respectively. Subgroup analysis for patients with severe esophagitis at baseline showed significantly higher results for vonoprazan than lansoprazole, with an RR of 1.14 (1.06-1.22). CONCLUSIONS Our findings suggest that vonoprazan is non-inferior to PPIs as therapy for patients with GERD. Subgroup analysis indicates that vonoprazan is more effective than PPIs for patients with severe erosive esophagitis. The safety outcomes for vonoprazan are similar to those for PPIs.
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Chen X, Xu MT, Wen JB. Meta-analysis of vonoprazan and proton pump inhibitors in preventing delayed bleeding and facilitating ulcer healing after gastric endoscopic submucosal dissection. Shijie Huaren Xiaohua Zazhi 2020; 28:1249-1260. [DOI: 10.11569/wcjd.v28.i24.1249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Vonoprazan (VPZ) is a novel potassium-competitive acid blocker that has been widely used in Japan for Helicobacter pylori eradication and for treatment of gastroeasophageal reflux disease and peptic ulcer. Compared with proton pump inhibitors (PPIs), VPZ can inhibit acid secretion more stably and effectively. Based on the results of previous studies, we speculated that compared with PPIs, VPZ is more effective in preventing delayed bleeding and facilitating ulcer healing after gastric endoscopic submucosal dissection (ESD).
AIM To compare the efficacy of VPZ and PPIs in preventing delayed bleeding and facilitating ulcer healing after gastric ESD.
METHODS We collected randomized controlled trials (RCTs) or cohort studies on the effectiveness of VPZ and PPIs in ESD-induced ulcer and delayed bleeding from electronic datasets including PubMed, EMBASE, Cochrane Library, Google Scholar, CNKI database, Wanfang database, and VIP database. The Cochrane Risk of Bias Tool and Newcastle Ottawa Quality Assessment Scale were applied to evaluate the quality of the articles included. Meta-analysis was performed using software Revman 5.2. Publication bias was assessed and Begg's graphs were drawn using Stata 14.0. Trim and fill analysis was performed when the publication bias was significant.
RESULTS Nineteen studies were included in this Meta-analysis. The overall risk ratio (RR) of VPZ relative to PPIs for delayed bleeding was 0. 86 (P = 0. 38; 95%CI: 0.61-1.21). The RR in the subgroup of antithrombotic patientes was 1.35 (P = 0.54; 95%CI: 0.52-3.48), while the RR in the subgroup of non-antithrombotic patients was 0.68 (P = 0.12; 95%CI: 0.41-1.10). The RR of VPZ relative to PPIs was 1.37 (P = 0.02; 95%CI: 1.06-1.77) at 4 wk and 1.02 (P = 0.60; 95%CI: 0.95-1.09) at 8 wk. After excluding three studies with combination treatment, the RRs for delayed bleeding, ulcer healing at 4 wk, and ulcer healing at 8 wk were 0.90 (P = 0.56), 1.34 (P = 0.04), and 1. 02 (P = 0.60), respectively.
CONCLUSION During the first 4 wk after gastric ESD, VPZ promotes ulcer healing faster than PPIs. At the end of the 8th weeks after ESD, there is no significant difference between VPZ and PPIs for ulcer healing. In the postoperative population with or without using antithrombotic drugs, compared with PPIs, VPZ does not exhibit any superiority in preventing delayed bleeding.
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Affiliation(s)
- Xuan Chen
- Department of Gastroenterology, Pingxiang Hospital, Affiliated Hospital of Southern Medical University, Pingxiang 337000, Jiangxi Province, China
| | - Meng-Ting Xu
- Department of Gastroenterology, Pingxiang Hospital, Affiliated Hospital of Southern Medical University, Pingxiang 337000, Jiangxi Province, China
| | - Jian-Bo Wen
- Department of Gastroenterology, Pingxiang Hospital, Affiliated Hospital of Southern Medical University, Pingxiang 337000, Jiangxi Province, China
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Safety, Tolerability and Pharmacokinetics of Single Ascending and Multiple Oral Doses of Tegoprazan in Healthy Chinese Subjects. Clin Drug Investig 2020; 41:89-97. [PMID: 33355910 DOI: 10.1007/s40261-020-00986-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND AND OBJECTIVES Tegoprazan is one of the potassium-competitive acid blockers (P-CABs). It exhibits its anti-secretory effects by competitively and reversibly blocking the availability of K+ of the H+, K+-ATPase. This study was designed to investigate the safety and pharmacokinetics of tegoprazan in healthy Chinese subjects. METHODS Thirty-eight healthy Chinese subjects were recruited in this randomized, single-center, double-blind, placebo-controlled study, with a single ascending dose of 50, 100, 200 mg and a multiple dose of 100 mg for 10 days. The plasma concentration of tegoprazan was determined by a validated liquid chromatography tandem mass spectrometry (LC-MS/MS) method. Pharmacokinetics were evaluated via non-compartmental and compartmental model analysis. Safety was assessed by physical examinations, vital signs, clinical laboratory tests, and electrocardiograms. RESULTS No serious adverse event was observed in this study. After single-dose administration (50, 100 and 200 mg), tegoprazan was rapidly absorbed with a median maximum measure plasma concentration (Tmax) at 0.5 h and declined with a terminal (elimination) half-life (t1/2) of 3.87-4.57 h. The maximum measured plasma concentration (Cmax) for tegoprazan was 813.80, 1494.60 and 2829.00 ng/mL. Meanwhile, the corresponding area under the concentration-time curve (AUC) from time zero to infinity (AUC0-inf) was 2761.00, 5980.05 and 11,044.72 ng∙h/mL in 50, 100, 200 mg group, respectively. Dose-dependent increase was observed in the value of Cmax and AUC after administration of tegoprazan 50 to 200 mg. The two-compartment model well described the pharmacokinetic profile of tegoprazan. In the steady state, no accumulation was found after repeated administration at the 100-mg dose level. No experimental differences were found based on gender. CONCLUSIONS Tegoprazan was well tolerated in the dose range of 50-200 mg in single- and 100 mg in multiple-dose studies. Tegoprazan shows dose linearity with oral administration after a single dose of 50 to 200 mg and less drug accumulation after 10 days of continuous administration in 100 mg.
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The Potential Benefits of Vonoprazan as Helicobacter pylori Infection Therapy. Pharmaceuticals (Basel) 2020; 13:ph13100276. [PMID: 32998241 PMCID: PMC7600708 DOI: 10.3390/ph13100276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/24/2020] [Accepted: 09/24/2020] [Indexed: 12/11/2022] Open
Abstract
Helicobacter pylori infection is a severe global health problem that is closely associated with acid-related diseases and gastric malignancies. Eradicating H. pylori is strongly recommended for lowering peptic ulcer recurrence and preventing gastric cancer. The current approved H. pylori eradication regimen combines a proton pump inhibitor (PPI) with two antibiotics. Unfortunately, this regimen failed to meet expectations mostly due to antibiotic resistance and insufficient gastric acid suppression. Vonoprazan, a novel potassium-competitive acid blocker, showed promising results as a PPI replacement. Vonoprazan inhibits gastric acid secretion by acting as a reversible competitive inhibitor against potassium ions and forming disulfide bonds with the cysteine molecule of H+/K+-ATPase. Vonoprazan has superior pharmacological characteristics over PPI, such as no requirement for acid activation, stability in acidic conditions, shorter optimum acid suppression period, and resistance to cytochrome P (CYP)2C19 polymorphism. Several comparative randomized controlled trials and meta-analyses revealed the superiority of vonoprazan in eradicating H. pylori, notably the resistant strains. The adverse effect caused by vonoprazan is long-term acid suppression that may induce elevated gastrin serum, hypochlorhydria, and malabsorption. All vonoprazan studies have only been conducted in Japan. Further studies outside Japan are necessary for universally conclusive results.
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Scarpignato C, Hongo M, Wu JCY, Lottrup C, Lazarescu A, Stein E, Hunt RH. Pharmacologic treatment of GERD: Where we are now, and where are we going? Ann N Y Acad Sci 2020; 1482:193-212. [PMID: 32935346 DOI: 10.1111/nyas.14473] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/20/2020] [Accepted: 07/30/2020] [Indexed: 02/06/2023]
Abstract
The introduction of acid inhibition in clinical practice has revolutionized the management of acid-related diseases, leading to the virtual abolition of elective surgery for ulcer disease and relegating antireflux surgery to patients with gastroesophageal reflux disease (GERD) not adequately managed by medical therapy. Proton pump inhibitors (PPIs) are the antisecretory drugs of choice for the treatment of reflux disease. However, these drugs still leave some unmet clinical needs in GERD. PPI-refractoriness is common, and persistent symptoms are observed in up to 40-55% of daily PPI users. Potassium-competitive acid blockers (P-CABs) clearly overcome many of the drawbacks and limitations of PPIs, achieving rapid, potent, and prolonged acid suppression, offering the opportunity to address many of the unmet needs. In recent years, it has been increasingly recognized that impaired mucosal integrity is involved in the pathogenesis of GERD. As a consequence, esophageal mucosal protection has emerged as a new, promising therapeutic avenue. When P-CABS are used as add-on medications to standard treatment, a growing body of evidence suggests a significant additional benefit, especially in the relief of symptoms not responding to PPI therapy. On the contrary, reflux inhibitors are considered a promise unfulfilled, and prokinetic agents should only be used on a case-by-case basis.
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Affiliation(s)
- Carmelo Scarpignato
- Department of Health Sciences, United Campus of Malta, Msida, Malta.,Faculty of Medicine, Chinese University of Hong Kong, Shatin, Hong Kong
| | - Michio Hongo
- Department of Comprehensive Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Justin C Y Wu
- Department of Medicine and Therapeutics, Prince of Wales Hospital, Shatin, Hong Kong, China
| | - Christian Lottrup
- Department of Medicine, Aalborg University Hospital, Hobro, Denmark.,Mech-Sense, Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmak
| | - Adriana Lazarescu
- Division of Gastroenterology, University of Alberta, Edmonton, Alberta, Canada
| | - Ellen Stein
- Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, Maryland
| | - Richard H Hunt
- Division of Gastroenterology and Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
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35
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Marcus EA, Pisegna JR. Editorial: tegoprazan-the newest advance in the management of acid-related diseases. Aliment Pharmacol Ther 2020; 52:1074-1075. [PMID: 33119154 DOI: 10.1111/apt.15963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- Elizabeth A Marcus
- Department of Paediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
| | - Joseph R Pisegna
- VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA.,Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,Department of Human Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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36
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Tsujita K, Deguchi H, Uda A, Sugano K. Upper gastrointestinal bleeding in Japanese patients with ischemic heart disease receiving vonoprazan or a proton pump inhibitor with multiple antithrombotic agents: A nationwide database study. J Cardiol 2020; 76:51-57. [DOI: 10.1016/j.jjcc.2020.02.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 01/16/2020] [Accepted: 02/11/2020] [Indexed: 02/09/2023]
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Shen J, Wang B, Wang S, Chen F, Meng D, Jiang H, Zhou Y, Geng P, Zhou Q, Liu B. Effects of Voriconazole on the Pharmacokinetics of Vonoprazan in Rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:2199-2206. [PMID: 32581516 PMCID: PMC7280087 DOI: 10.2147/dddt.s255427] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/19/2020] [Indexed: 12/12/2022]
Abstract
Purpose The purpose of this study was to examine the effects of voriconazole on the pharmacokinetics of vonoprazan. Methods Fifteen Sprague-Dawley rats were randomly divided into three groups: five rats in each group, including control group, single-dose group (a single dose of 30 mg/kg of voriconazole), and multiple-dose group (multiple doses of 30 mg/(kg•day) per dose of voriconazole). Each group of rats was given an oral dose of 10 mg/kg vonoprazan 30 min after the administration of voriconazole or vehicle. After the oral administration of vonoprazan, 50 µL of blood was collected into 1.5-mL heparinized tubes via the caudal vein. The concentration of vonoprazan in plasma was quantified by ultra-performance liquid chromatography/tandem mass spectrometry. Both in vitro effects of voriconazole on vonoprazan and the mechanism of the observed inhibition were studied in rat liver microsomes. Results When orally administered, voriconazole increased the area under the plasma concentration-time curve (AUC), prolonged the elimination half-life (t1/2), and decreased the clearance (CL) of vonoprazan; there was no significant difference between the single-dose and multiple-dose groups. Voriconazole inhibited the metabolism of vonoprazan at an IC50 of 2.93 μM and showed mixed inhibition. The results of the in vivo experiments were consistent with those of the in vitro experiments. Conclusion Our findings provide the evidence of drug-drug interactions between voriconazole and vonoprazan that could occur with pre-administration of voriconazole. Thus, clinicians should pay attention to the resulting changes in pharmacokinetic parameters and accordingly, adjust the dose of vonoprazan in clinical settings.
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Affiliation(s)
- Jiquan Shen
- Department of Orthopaedics, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Bo Wang
- Department of Orthopaedics, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Shuanghu Wang
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China.,School of Pharmaceutical Science, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Feifei Chen
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Deru Meng
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Hui Jiang
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Yunfang Zhou
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Peiwu Geng
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Quan Zhou
- The Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
| | - Bin Liu
- Department of Orthopaedics, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, Zhejiang 323000, People's Republic of China
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Kakiuchi T, Mizoe A, Yamamoto K, Imamura I, Hashiguchi K, Kawakubo H, Yamaguchi D, Fujioka Y, Nakayama A, Okuda M, Matsuo M. Effect of probiotics during vonoprazan-containing triple therapy on gut microbiota in Helicobacter pylori infection: A randomized controlled trial. Helicobacter 2020; 25:e12690. [PMID: 32207209 DOI: 10.1111/hel.12690] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/11/2020] [Accepted: 02/28/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Probiotics are beneficial to patients with Helicobacter pylori infections by modulating the gut microbiota. Biofermin-R (BFR) is a multiple antibiotic-resistant lactic acid bacteria preparation of Enterococcus faecium 129 BIO 3B-R and is effective in normalizing the gut microbiota when used in combination with antibiotics. This study aimed to determine the effect of BFR in combination with vonoprazan (VPZ)-based therapy on gut microbiota. METHODS Patients with positive urinary anti-H pylori antibody test (primary test) and fecal H pylori antigen test (secondary test) were examined. Patients in group 1 (BFR- ) received VPZ (20 mg twice daily), amoxicillin (750 mg twice daily), and clarithromycin (400 mg twice daily) for 7 days. Patients in group 2 (BFR+ ) received BFR (3 tablets/day) for 7 days, in addition to the aforementioned treatments. Following treatment, the relative abundance, α-diversity, and β-diversity of gut microbiota were assessed. RESULTS Supplementation with BFR prevented the decrease in a-diversity after eradication therapy (Day 7). β-diversity was similar between groups. The incidence rate of diarrhea was non-significantly higher in the BFR- than in the BFR+ group (73.1% vs 56.5%; P = .361). Stool consistency was comparable in the BFR+ group on Days 7 and 1 (3.86 ± 0.95 vs 3.86 ± 1.46; P = .415). CONCLUSION Biofermin-R combined with VPZ-based therapy resulted in higher microbial α-strain diversity and suppressed stool softening during H pylori eradication therapy.
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Affiliation(s)
- Toshihiko Kakiuchi
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | - Akihiko Mizoe
- Department of Gastroenterology, Kahan Hospital, Karatsu, Japan
| | - Kentaroh Yamamoto
- Department of Gastroenterology, Yamamoto Memorial Hospital, Imari, Japan
| | - Ichiro Imamura
- Department of Gastroenterology, Imamura Hospital, Tosu, Japan
| | | | - Hiroharu Kawakubo
- Department of Gastroenterology, ImariArita Kyoritsu Hospital, Nishimatsuura, Japan
| | - Daisuke Yamaguchi
- Department of Gastroenterology, Ureshino Medical Center, Ureshino, Japan
| | | | - Aiko Nakayama
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | - Masumi Okuda
- Department of Pediatrics, Hyogo College of Medicine, Nishinomiya, Japan
| | - Muneaki Matsuo
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
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Kong WM, Sun BB, Wang ZJ, Zheng XK, Zhao KJ, Chen Y, Zhang JX, Liu PH, Zhu L, Xu RJ, Li P, Liu L, Liu XD. Physiologically based pharmacokinetic-pharmacodynamic modeling for prediction of vonoprazan pharmacokinetics and its inhibition on gastric acid secretion following intravenous/oral administration to rats, dogs and humans. Acta Pharmacol Sin 2020; 41:852-865. [PMID: 31969689 PMCID: PMC7468366 DOI: 10.1038/s41401-019-0353-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 12/19/2019] [Indexed: 12/16/2022] Open
Abstract
Vonoprazan is characterized as having a long-lasting antisecretory effect on gastric acid. In this study we developed a physiologically based pharmacokinetic (PBPK)-pharmacodynamic (PD) model linking to stomach to simultaneously predict vonoprazan pharmacokinetics and its antisecretory effects following administration to rats, dogs, and humans based on in vitro parameters. The vonoprazan disposition in the stomach was illustrated using a limited-membrane model. In vitro metabolic and transport parameters were derived from hepatic microsomes and Caco-2 cells, respectively. We found the most predicted plasma concentrations and pharmacokinetic parameters of vonoprazan in rats, dogs and humans were within twofold errors of the observed data. Free vonoprazan concentrations (fu × C2) in the stomach were simulated and linked to the antisecretory effects of the drug (I) (increases in pH or acid output) using the fomula dI/dt = k × fu × C2 × (Imax − I) − kd × I. The vonoprazan dissociation rate constant kd (0.00246 min−1) and inhibition index KI (35 nM) for H+/K+-ATPase were obtained from literatures. The vonoprazan-H+/K+-ATPase binding rate constant k was 0.07028 min−1· μM−1 using ratio of kd to KI. The predicted antisecretory effects were consistent with the observations following intravenous administration to rats (0.7 and 1.0 mg/kg), oral administration to dogs (0.3 and 1.0 mg/kg) and oral single dose or multidose to humans (20, 30, and 40 mg). Simulations showed that vonoprazan concentrations in stomach were 1000-fold higher than those in the plasma at 24 h following administration to human. Vonoprazan pharmacokinetics and its antisecretory effects may be predicted from in vitro data using the PBPK-PD model of the stomach. These findings may highlight 24-h antisecretory effects of vonoprazan in humans following single-dose or the sustained inhibition throughout each 24-h dosing interval during multidose administration.
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Shibli F, Kitayama Y, Fass R. Novel Therapies for Gastroesophageal Reflux Disease: Beyond Proton Pump Inhibitors. Curr Gastroenterol Rep 2020; 22:16. [PMID: 32185589 DOI: 10.1007/s11894-020-0753-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
PURPOSE OF REVIEW Despite the many areas of unmet needs in gastroesophageal reflux disease (GERD), proton pump inhibitors (PPIs) remain the cornerstone of medical therapy. However, since their introduction, the therapeutic limitations of PPIs in GERD management have been increasingly recognized. RECENT FINDINGS In this review we discuss the new medical, endoscopic, and surgical therapeutic modalities that have been developed over the last decade. They include the potassium-competitive acid blockers (P-CABs) which provide a rapid onset, prolonged, and profound acid suppression, mucosal protectants which promote the physiological protective barrier of the esophageal mucosa, new prokinetics and neuromodulators. There are growing numbers of novel therapeutic endoscopic techniques that are under investigation or were recently introduced into the market, further expanding our therapeutic armamentarium for GERD. The development of diverse therapeutic modalities for GERD, despite the availability of PPIs, suggests that there are many areas of unmet need in GERD that will continue and drive future exploration for novel therapies.
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Affiliation(s)
- Fahmi Shibli
- The Esophageal and Swallowing Center, Division of Gastroenterology and Hepatology, MetroHealth Medical Center, Case Western Reserve University, 2500 MetroHealth Drive, Cleveland, OH, 44109, USA
| | - Yoshitaka Kitayama
- The Esophageal and Swallowing Center, Division of Gastroenterology and Hepatology, MetroHealth Medical Center, Case Western Reserve University, 2500 MetroHealth Drive, Cleveland, OH, 44109, USA
| | - Ronnie Fass
- The Esophageal and Swallowing Center, Division of Gastroenterology and Hepatology, MetroHealth Medical Center, Case Western Reserve University, 2500 MetroHealth Drive, Cleveland, OH, 44109, USA.
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Takeuchi T, Furuta T, Fujiwara Y, Sugimoto M, Kasugai K, Kusano M, Okada H, Suzuki T, Higuchi T, Kagami T, Uotani T, Yamade M, Sawada A, Tanaka F, Harada S, Ota K, Kojima Y, Murata M, Tamura Y, Funaki Y, Kawamura O, Okamoto Y, Fujimoto K, Higuchi K. Randomised trial of acid inhibition by vonoprazan 10/20 mg once daily vs rabeprazole 10/20 mg twice daily in healthy Japanese volunteers (SAMURAI pH study). Aliment Pharmacol Ther 2020; 51:534-543. [PMID: 31990424 DOI: 10.1111/apt.15641] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/10/2019] [Accepted: 01/05/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Vonoprazan (V), a potassium-competitive acid blocker, has a more durable acid-inhibitory effect as compared with standard-dose proton pump inhibitors (PPIs) but has not been compared with 2-4 times higher daily PPI doses administered in two divided doses. AIMS To evaluate the acid-inhibitory effect of V 10/20 mg once-daily (OD; V10/V20) vs rabeprazole (R) 10/20 mg twice-daily (BID; R20/R40) in healthy Japanese volunteers. METHODS This multicentre, randomised, open-label, two-period, crossover study compared V10 or V20 vs R20, or V20 vs R40 using three cohorts of 10 healthy Japanese adults. Within each cohort, subjects were randomised to receive V or R for 7 days and, following a washout period ≥7 days, the other treatment for 7 days. On day 6 of each period, 24-hours multichannel gastric impedance-pH monitoring was performed. Percent times pH ≥ 3, ≥4 and ≥5 (pH 3, 4 and 5 holding time ratios [HTRs]) in 24 hours were evaluated as primary pharmacodynamic endpoints. RESULTS Acid-inhibitory effect (24-hours pH 3 HTR) of V20 was greater than those of R20 (91.0% vs 65.3%; P = .0049) and R40 (98.5% vs 85.9%; P = .0073). Similar results were obtained for 24-hours pH 4 and 5 HTRs. V20 also achieved greater nocturnal pH 4 (91.5% vs 73.2%; P = .0319) and 5 HTRs (78.8% vs 62.2%; P = .0325) as compared with R40. One subject (20%) developed diarrhoea while receiving R40 which was considered treatment-related. CONCLUSIONS Compared with 2-4 times the standard daily dose of R, V20 exerts a more potent and durable acid-inhibitory effect. Trial identifier: UMIN000022198 (www.umin.ac.jp/ctr/index.htm).
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Affiliation(s)
| | - Takahisa Furuta
- Center for Clinical Research, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yasuhiro Fujiwara
- Department of Gastroenterology, Osaka City University Graduate School of Medicine School of Medicine, Osaka, Japan
| | - Mitsushige Sugimoto
- Division of Digestive Endoscopy, Shiga University of Medical Science Hospital, Otsu, Japan
| | - Kunio Kasugai
- Department of Gastroenterology, Aichi Medical University, Aichi, Japan
| | - Motoyasu Kusano
- Department of Endoscopy and Endoscopic Surgery, Gunma University Hospital, Meabashi, Japan
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Takahiro Suzuki
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tomohiro Higuchi
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takuma Kagami
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takahiro Uotani
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mihoko Yamade
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Akinari Sawada
- Department of Gastroenterology, Osaka City University Graduate School of Medicine School of Medicine, Osaka, Japan
| | - Fumio Tanaka
- Department of Gastroenterology, Osaka City University Graduate School of Medicine School of Medicine, Osaka, Japan
| | - Satoshi Harada
- Second Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
| | - Kazuhiro Ota
- Second Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
| | - Yuichi Kojima
- Endoscopic Center, Osaka Medical College Hospital, Takatsuki, Japan
| | - Masaki Murata
- Division of Digestive Endoscopy, Shiga University of Medical Science Hospital, Otsu, Japan
| | - Yasuhiro Tamura
- Department of Gastroenterology, Aichi Medical University, Aichi, Japan
| | - Yasushi Funaki
- Department of Gastroenterology, Aichi Medical University, Aichi, Japan
| | - Osamu Kawamura
- Department of Endoscopy and Endoscopic Surgery, Gunma University Hospital, Meabashi, Japan
| | - Yuki Okamoto
- Department of Gastroenterology and Hepatology, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Kazuma Fujimoto
- Department of Internal Medicine, Saga Medical School, Saga, Japan
| | - Kazuhide Higuchi
- Second Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
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Xiao Y, Zhang S, Dai N, Fei G, Goh KL, Chun HJ, Sheu BS, Chong CF, Funao N, Zhou W, Chen M. Phase III, randomised, double-blind, multicentre study to evaluate the efficacy and safety of vonoprazan compared with lansoprazole in Asian patients with erosive oesophagitis. Gut 2020; 69:224-230. [PMID: 31409606 PMCID: PMC6984055 DOI: 10.1136/gutjnl-2019-318365] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To establish the non-inferior efficacy of vonoprazan versus lansoprazole in the treatment of Asian patients with erosive oesophagitis (EO). DESIGN In this phase III, double-blind, multicentre study, patients with endoscopically confirmed EO were randomised 1:1 to receive vonoprazan 20 mg or lansoprazole 30 mg, once daily for up to 8 weeks. The primary endpoint was EO healing rate at 8 weeks. The secondary endpoints were EO healing rates at 2 and 4 weeks. Safety endpoints included treatment-emergent adverse events (TEAEs). RESULTS In the vonoprazan (n=238) and lansoprazole (n=230) arms, 8-week EO healing rates were 92.4% and 91.3%, respectively (difference 1.1% (95% CI -3.822% to 6.087%)). The respective 2-week EO healing rates were 75.0% and 67.8% (difference 7.2% (95% CI -1.054% to 15.371%)), and the respective 4-week EO healing rates were 85.3% and 83.5% (difference 1.8% (95% CI -4.763% to 8.395%)). In patients with baseline Los Angeles classification grade C/D, 2-week, 4-week and 8-week EO healing rates were higher with vonoprazan versus lansoprazole (2 weeks: 62.2% vs 51.5%, difference 10.6% (95% CI -5.708% to 27.002%); 4 weeks: 73.3% vs 67.2%, difference 6.2% (95% CI -8.884 to 21.223); and 8 weeks: 84.0% vs 80.6%, difference 3.4% (95% CI -9.187% to 15.993%)). Overall, EO healing rates appeared higher with vonoprazan versus lansoprazole. TEAE rates were 38.1% and 36.6% in the vonoprazan and lansoprazole group, respectively. CONCLUSION Our findings demonstrate the non-inferior efficacy of vonoprazan versus lansoprazole in terms of EO healing rate at 8 weeks in this population. Safety outcomes were similar in the two treatment arms. TRIAL REGISTRATION NUMBER NCT02388724.
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Affiliation(s)
- Yinglian Xiao
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shutian Zhang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Ning Dai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China
| | - Guijun Fei
- Department of Gastroenterology, Peking Union Medical College Hospital, Beijing, China
| | - Khean-Lee Goh
- Division of Gastroenterology, Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Hoon Jai Chun
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Institute of Gastrointestinal Medical Instrument Research, Korea University College of Medicine, Seoul, Republic of Korea
| | - Bor-Shyang Sheu
- Department of Internal Medicine, National Cheng Kung University Hospital and Tainan Hospital, Tainan, Taiwan
| | - Chui Fung Chong
- Gastroenterology Therapeutic Area Unit, Takeda Development Center Asia, Singapore, Singapore
| | - Nobuo Funao
- Takeda Development Center Japan, Takeda Pharmaceutical Company, Osaka, Japan
| | - Wen Zhou
- Department of Clinical Science, Takeda Pharmaceutical Company, Cambridge, Massachusetts, USA
| | - Minhu Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Yokoya Y, Igarashi A, Uda A, Deguchi H, Takeuchi T, Higuchi K. Cost-utility analysis of a 'vonoprazan-first' strategy versus 'esomeprazole- or rabeprazole-first' strategy in GERD. J Gastroenterol 2019; 54:1083-1095. [PMID: 31396703 DOI: 10.1007/s00535-019-01609-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 07/31/2019] [Indexed: 02/04/2023]
Abstract
BACKGROUND Gastroesophageal reflux disease (GERD) can be treated using a vonoprazan-first strategy (first-line treatment with vonoprazan), or esomeprazole-first/rabeprazole-first strategies (first-line treatment with proton-pump inhibitors [PPIs], esomeprazole/rabeprazole, followed by a switch to vonoprazan). This cost-utility analysis used long-term simulation modeling to evaluate the cost-effectiveness of a vonoprazan-first strategy compared with the esomeprazole-first and rabeprazole-first strategies. METHODS A Markov simulation model was developed to evaluate the cost-effectiveness of vonoprazan-first, esomeprazole-first, and rabeprazole-first strategies, comprising healing and maintenance therapies, over 5 years (4-week cycles). Healing therapy began with the administration of a normal dose of drug per real-world practice. If patients were not healed endoscopically, either a longer duration of healing therapy was provided (vonoprazan), the dose was increased (rabeprazole), or patients were switched to vonoprazan (immediately for esomeprazole, and after dose-escalation for rabeprazole, respectively). Healed patients received maintenance (lower/same dose as healing therapy). Recurrence resulted in re-challenge with healing therapy. Transition probabilities were derived from the results of indirect comparisons (network meta-analysis) and costs calculated from the Japanese payer perspective. Outcomes were defined as quality-adjusted life years (QALYs), with utilities based on published values. RESULTS Expected costs of the vonoprazan-, esomeprazole-, and rabeprazole-first strategies were ¥36,194, ¥76,719, and ¥41,105, respectively, over 5 years. QALY gains for vonoprazan-first strategy versus the esomeprazole- and rabeprazole-first strategies were 0.014 and 0.003, respectively. Both estimated incremental cost-effectiveness ratios were dominant and robust to two sensitivity analyses. CONCLUSIONS Vonoprazan-first strategy increased QALYs and appeared to be cost-effective for GERD patients compared with the esomeprazole- or rabeprazole-first strategies.
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Affiliation(s)
- Yuta Yokoya
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Digaku-cho, Takatsuki, Japan
| | - Ataru Igarashi
- Unit of Public Health and Preventive Medicine, School of Medicine, Yokohama City University, Yokohama, Japan.,Department of Health Economics and Outcomes Research, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Akihito Uda
- Japan Medical Affairs, Takeda Pharmaceutical Company Limited, Tokyo, Japan
| | - Hisato Deguchi
- Japan Medical Affairs, Takeda Pharmaceutical Company Limited, Tokyo, Japan
| | - Toshihisa Takeuchi
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Digaku-cho, Takatsuki, Japan.
| | - Kazuhide Higuchi
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Digaku-cho, Takatsuki, Japan
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Ashida K, Honda Y, Sanada K, Takemura Y, Sakamoto S. The safety and effectiveness of vonoprazan-based Helicobacter pylori eradication therapy; a prospective post-marketing surveillance. Expert Opin Drug Saf 2019; 18:1255-1261. [PMID: 31646920 DOI: 10.1080/14740338.2019.1676722] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background: The safety and effectiveness of vonoprazan-based Helicobacter pylori (H. pylori) eradication therapy in routine clinical practice, and patient characteristics that influence safety and effectiveness, have not been well investigated.Methods: H. pylori-positive patients with gastric ulcer, duodenal ulcer, idiopathic thrombocytopenic purpura, history of endoscopic treatment of early gastric cancer, and gastritis were enrolled. Patients received vonoprazan 20 mg, amoxicillin (AMPC) 750 mg, and clarithromycin (CAM) 200-400 mg twice daily for 7 days for the first-line eradication. For the second-line eradication, vonoprazan, AMPC, and metronidazole (MTZ) 250 mg were administered. The incidence of adverse drug reactions (ADRs) and eradication rates were evaluated.Results: The incidences of ADRs with vonoprazan/AMPC/CAM and vonoprazan/AMPC/MTZ were 3.22% (16/497) and 1.89% (1/53), respectively. Commonly reported ADRs were diarrhea, nausea, dysgeusia, feces soft, and rash. The eradication rates of the first-line therapy and the second-line therapy were 91.24% (427/468) and 95.45% (42/44), respectively. No notable differences in ADRs and eradication rates were observed when stratified by patient demographic characteristics.Conclusion: No new safety concerns were observed, and the effectiveness of vonoprazan-based triple therapy was confirmed in routine clinical practice.Trial registration: This study is registered at the Japan Pharmaceutical Information Center Clinical Trials Information (JapicCTI-153003).
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Affiliation(s)
- Kiyoshi Ashida
- Department of Gastroenterology, Rakuwakai Otowa Hospital, Kyoto, Japan
| | - Youichirou Honda
- Japan Medical Office, Takeda Pharmaceutical Company Limited, Tokyo, Japan
| | - Katsuyuki Sanada
- Pharmacovigilance Department, PRA Development Center KK, Osaka, Japan
| | - Yukiko Takemura
- Japan Medical Office, Takeda Pharmaceutical Company Limited, Tokyo, Japan
| | - Shigeru Sakamoto
- Japan Medical Office, Takeda Pharmaceutical Company Limited, Tokyo, Japan
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The potential role of potassium-competitive acid blockers in the treatment of gastroesophageal reflux disease. Curr Opin Gastroenterol 2019; 35:344-355. [PMID: 31045597 DOI: 10.1097/mog.0000000000000543] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW Gastroesophageal reflux disease (GERD) is primarily a motor disorder, but its pathogenesis is multifactorial. Although gastric acid secretion is usually normal in GERD patients, treatment with proton pump inhibitors (PPIs) has become the standard of care, despite increasing awareness of their shortcomings. In this article, a new class of antisecretory drugs (namely potassium-competitive acid blockers, P-CABs), developed to overcome these limitations, is discussed. RECENT FINDINGS P-CABs block the K exchange channel of the proton pump, resulting in rapid, competitive, reversible inhibition of acid secretion. These drugs offer a more rapid elevation of intragastric pH than PPIs, while maintaining similar antisecretory effect, the duration of which is dependent on half-life and can be prolonged with extended release formulations. Thus, P-CABs offer advances in the treatment of GERD including rapid heartburn relief, faster and more reliable healing of severe grades of erosive esophagitis, as a consequence of better control of nighttime acid secretion than PPIs. SUMMARY P-CABs overcome many of the drawbacks of PPIs. The unique antisecretory effects of vonoprazan might be especially useful in the long-term treatment of patients with Barrett's esophagus.
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In Vitro Assessment of Potential for CYP-Inhibition-Based Drug-Drug Interaction Between Vonoprazan and Clopidogrel. Eur J Drug Metab Pharmacokinet 2019; 44:217-227. [PMID: 30361928 DOI: 10.1007/s13318-018-0521-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND OBJECTIVES It was recently proposed that CYP-mediated drug-drug interactions (DDIs) of vonoprazan with clopidogrel and prasugrel can attenuate the antiplatelet actions of the latter two drugs. Clopidogrel is metabolized to the pharmacologically active metabolite H4 and its isomers by multiple CYPs, including CYP2C19 and CYP3A4. Therefore, to investigate the possibility of CYP-based DDIs, in vitro metabolic inhibition studies using CYP probe substrates or radiolabeled clopidogrel and human liver microsomes (HLMs) were conducted in this work. METHODS Reversible inhibition studies focusing on the effects of vonoprazan on CYP marker activities and the formation of the [14C]clopidogrel metabolite H4 were conducted with and without pre-incubation using HLMs. Time-dependent inhibition (TDI) kinetics were also measured. RESULTS It was found that vonoprazan is not a significant direct inhibitor of any CYP isoforms (IC50 ≥ 16 μM), but shows the potential for TDI of CYP2B6, CYP2C19, and CYP3A4/5. This TDI was weaker than the inhibition induced by the corresponding reference inhibitors ticlopidine, esomeprazole, and verapamil, based on the measured potencies (kinact/KI ratio and the R2 value). In a more direct in vitro experiment, vonoprazan levels of up to 10 µM (a 100-fold higher concentration than the plasma Cmax of 75.9 nM after taking 20 mg once daily for 7 days) did not suppress the formation of the active metabolite H4 or other oxidative metabolites of [14C]clopidogrel in a reversible or time-dependent manner. Additionally, an assessment of clinical trials and post-marketing data suggested no evidence of a DDI between vonoprazan and clopidogrel. CONCLUSIONS The body of evidence shows that the pharmacodynamic DDI reported between vonoprazan and clopidogrel is unlikely to be caused by the inhibition of CYP2B6, CYP2C19, or CYP3A4/5 by vonoprazan.
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Kang H, Kim BJ, Choi G, Kim JG. Vonoprazan versus proton pump inhibitors for the management of gastric endoscopic submucosal dissection-induced artificial ulcer: A systematic review with meta-analysis. Medicine (Baltimore) 2019; 98:e15860. [PMID: 31192917 PMCID: PMC6587628 DOI: 10.1097/md.0000000000015860] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Vonoprazan, a novel potassium-competitive acid blocking agent, has been used in the management of endoscopic submucosal dissection (ESD)-induced artificial ulcers. This study aimed to perform a systematic review and meta-analysis for the comparison of the effects of vonoprazan and proton pump inhibitors (PPIs) in treating ESD-induced artificial ulcers and preventing delayed bleeding in randomized controlled trial and cohort studies. METHODS We searched OVID-MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), Google Scholar, and clinical trial registries in April 2018 to identify all studies that assess and compare the effects of vonoprazan and PPI in treating ESD-induced artificial ulcers and preventing delayed bleeding. Primary outcome of ulcer healing rate and secondary outcomes of shrinkage rate, ulcer size, and delayed bleeding were studied. RESULTS A total of 1265 patients from 12 studies were included in the final analysis. Healing rate at 4 weeks post-ESD was significantly higher in the vonoprazan group than in the PPI group (relative ratio [RR] 1.20 [1.03-1.40]). However, healing rate at 8 weeks post-ESD was significantly higher in the PPI group than in the vonoprazan group (RR 0.68 [0.48-0.97]).There was no evidence of significant difference between groups in shrinkage rate at 4 weeks post-ESD, shrinkage rate at 8 weeks post-ESD, delayed bleeding, ulcer size at 0 weeks post-ESD, and ulcer size at 8 weeks post-ESD. CONCLUSIONS There was no substantial difference in ulcer healing and post-ESD bleeding between vonoprazan and PPIs. However, vonoprazan more rapidly and effectively treated artificial ulcers after ESD than did PPIs.
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Affiliation(s)
- Hyun Kang
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Beom Jin Kim
- Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Geunjoo Choi
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jae Gyu Kim
- Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
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Komori H, Ueyama H, Nagahara A, Akazawa Y, Takeda T, Matsumoto K, Matsumoto K, Asaoka D, Hojo M, Yao T, Watanabe S. A prospective randomized trial of a potassium competitive acid blocker vs proton pump inhibitors on the effect of ulcer healing after endoscopic submucosal dissection of gastric neoplasia. J Int Med Res 2019; 47:1441-1452. [PMID: 30816056 PMCID: PMC6460617 DOI: 10.1177/0300060519828514] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background/Aims Vonoprazan is a new a potassium-competitive acid blocker (P-CAB) that was recently developed in Japan. However, vonoprazan’s efficacy in healing gastric ulcers after endoscopic submucosal dissection (ESD) remains controversial. This study aimed to compare the efficacy of P-CABs and proton pump inhibitors (PPIs) in healing post-ESD ulcers. Materials and Methods This prospective randomized controlled trial (UMIN000017386) enrolled 40 patients with gastric neoplasia, who underwent ESD at our hospital from April 2015 to January 2016. Before ESD, patients were randomly divided into the following two groups: group V, vonoprazan 20 mg/day; or group R, rabeprazole 10 mg/day. Medications were taken 1 day before to 4 weeks after ESD. The ESD-induced artificial ulcer size was measured just after ESD and 4 weeks after ESD to calculate the reduction rate as follows: (ulcer area 4 weeks after ESD)/(ulcer area just after ESD) × 100. Results Eighteen patients in group V and 15 patients in group R were analyzed. The mean reduction rate was significantly different in groups V and R (93.3% vs 96.6%, respectively). Post-ESD bleeding was observed in two patients in group R and drug-induced hepatic injury in one patient in group R. Conclusion Rabeprazole facilitated the healing process post-ESD.
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Affiliation(s)
- Hiroyuki Komori
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Hiroya Ueyama
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Akihito Nagahara
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Yoichi Akazawa
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Tsutomu Takeda
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Kohei Matsumoto
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Kenshi Matsumoto
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Daisuke Asaoka
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Mariko Hojo
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Takashi Yao
- 2 Department of Human Pathology, Juntendo University, School of Medicine, Tokyo, Japan
| | - Sumio Watanabe
- 1 Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan
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Miyamoto S, Tsuda M, Kato M, Mabe K, Muto S, Ono S, Shimizu Y, Sakamoto N. Evaluation of gastric acid suppression with vonoprazan using calcium carbonate breath test. J Clin Biochem Nutr 2018; 64:174-179. [PMID: 30936631 PMCID: PMC6436034 DOI: 10.3164/jcbn.18-75] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 08/21/2018] [Indexed: 12/18/2022] Open
Abstract
Vonoprazan, a potassium-competitive acid blocker, is a new class of acid-suppressing agent. The acid-inhibitory effect of vonoprazan has been well-documented. However, there is no report on the extent to which the amount of gastric acid secretion is suppressed, not pH measurement, by the use of vonoprazan. The aim of this study was to evaluate this suppression effect. This was a single-arm, interventional pilot study involving 7 healthy Japanese men. The subjects were administered 20 mg vonoprazan for 6 days. The amount of gastric acid secretion was determined using the calcium carbonate breath test. The acid outputs were defined as the maximum Δ13C‰ (Δ13C max) and area under the curve (AUC) during the 30 min sampling period. The Δ13C max and AUC values significantly decreased on the administration of 20 mg vonoprazan. The AUC dropped by approximately 78% on day 1 and by 84% on day 6 and subsequently returned to the control level after cessation of vonoprazan therapy (reduction by 68% on day 7 and by 42% on day 8). In conclusion, the amount of gastric acid secretion rapidly decreased by the administration of vonoprazan; this inhibitory effect was found to be potent and long-lasting. (UMIN ID: UMIN000025469).
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Affiliation(s)
- Shuichi Miyamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Kita 14, Nishi 5, Kita-ku, Sapporo, Hokkaido 060-8648, Japan
| | - Momoko Tsuda
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Kita 14, Nishi 5, Kita-ku, Sapporo, Hokkaido 060-8648, Japan
| | - Mototsugu Kato
- Department of Gastroenterology, National Hospital Organization Hakodate Hospital, 16-gou, 18-banchi, Kawahara-cho, Hakodate, Hokkaido 041-8512, Japan
| | - Katsuhiro Mabe
- Department of Gastroenterology, National Hospital Organization Hakodate Hospital, 16-gou, 18-banchi, Kawahara-cho, Hakodate, Hokkaido 041-8512, Japan
| | - Shuichi Muto
- Department of Gastroenterology, National Hospital Organization Hokkaido Medical Center, 1-banchi, 1-gou, 5-jo, 7-chome, Yamanote, Nishi-ku, Sapporo, Hokkaido 063-0005, Japan
| | - Shoko Ono
- Division of Endoscopy, Hokkaido University Hospital, Kita 14, Nishi 5, Kita-ku, Sapporo, Hokkaido 060-8648, Japan
| | - Yuichi Shimizu
- Division of Endoscopy, Hokkaido University Hospital, Kita 14, Nishi 5, Kita-ku, Sapporo, Hokkaido 060-8648, Japan
| | - Naoya Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Kita 14, Nishi 5, Kita-ku, Sapporo, Hokkaido 060-8648, Japan
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