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Matsumoto H, Kobayashi N, Shinoda S, Goto A, Kaneko A, Fukuda N, Kamimaki C, Kubo S, Watanabe K, Horita N, Hara Y, Ishikawa Y, Kaneko T. Regional differences in epidermal growth factor receptor-tyrosine kinase inhibitor therapy in lung cancer treatment using a national database in Japan. Sci Rep 2023; 13:5208. [PMID: 36997606 PMCID: PMC10063675 DOI: 10.1038/s41598-023-31856-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/18/2023] [Indexed: 04/01/2023] Open
Abstract
Epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) are extensively used in the treatment of non-small cell lung cancer (NSCLC); hence, equal access to them is important. Therefore, this study aimed to identify regional differences in the prescription of EGFR-TKIs and the factors contributing to these differences. In this ecological study, we collected data using the National Database Open Data and the National Cancer Registry. The standardized claim ratio (SCR) was used as an indicator of the number of EGFR-TKI prescriptions. Additionally, we examined the association between SCR and various factors to identify the factors associated with this difference. The average SCR for the top three provinces was 153.4, while the average for the bottom three provinces was 61.6. Multivariate analysis used for evaluating the association of SCR with variables revealed that the number of designated cancer hospitals and radiation therapies were independent factors associated with the SCR of EGFR-TKIs. There were significant regional differences in the prescriptions of EGFR-TKIs in Japan based on the number of coordinated designated cancer hospitals and the number of patients receiving radiotherapy alone. These findings emphasize the need to implement policies to increase the number of hospitals to reduce regional differences.
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Affiliation(s)
- Hiromi Matsumoto
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Nobuaki Kobayashi
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
| | - Satoru Shinoda
- Department of Biostatistics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Japan
| | - Atsushi Goto
- Department of Health Data Science, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Japan
| | - Ayami Kaneko
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Nobuhiko Fukuda
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Chisato Kamimaki
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Sousuke Kubo
- Respiratory Disease Center, Yokohama City University Medical Center, 4-27 Urahunecho, Minami-ku, Yokohama, Japan
| | - Keisuke Watanabe
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Nobuyuki Horita
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Yu Hara
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Yoshihiro Ishikawa
- Department of Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Japan
| | - Takeshi Kaneko
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
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Atsumi T, Asakura E, Doi M, Sawant R, Kawaguchi I, Sasaki N, Liew D. Number needed to treat and cost per responder of Janus kinase inhibitors approved for the treatment of moderate-to-severe rheumatoid arthritis in Japan. Mod Rheumatol 2023; 33:54-63. [PMID: 35141743 DOI: 10.1093/mr/roac015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/20/2021] [Accepted: 01/27/2022] [Indexed: 01/07/2023]
Abstract
OBJECTIVE This study evaluated the effectiveness and cost-effectiveness of baricitinib, tofacitinib, and upadacitinib regimens, compared to conventional synthetic disease-modifying antirheumatic drug (csDMARD) alone, among Japanese patients with moderate-to-severe rheumatoid arthritis (RA) inadequately responsive to csDMARD, measured in terms of number needed to treat (NNT) and cost per responder (CPR). METHODS Efficacy data were derived from two recent network meta-analyses among global and Japanese population. The cost perspective was that of the Japanese Health Service. Both NNT and CPR were based on disease activity score for 28 joints with C-reactive protein (DAS28-CRP) remission and American College of Rheumatology (ACR) 20/50/70 at 12 and 24 weeks. RESULTS Over 12 weeks, the median NNT and the median CPR to achieve DAS28-CRP remission were 4.3 and JPY 1,799,696 [USD 16,361], respectively, for upadacitinib 15 mg + csDMARD. The equivalent results were 6.0 and JPY 2,691,684 [USD 24,470] for baricitinib 4 mg + csDMARD and 5.6 and JPY 2,507,152 [USD 22,792] for tofacitinib 5 mg + csDMARD. Similar rankings were observed at 24 weeks and for other outcomes. CONCLUSIONS Upadacitinib 15 mg was associated with the lowest NNT and CPR among the three Janus kinase inhibitors used in treatment regimens for Japanese patients with moderate-to-severe RA inadequately responsive to csDMARD.
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Affiliation(s)
- Tatsuya Atsumi
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Eri Asakura
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | | | | | | | | | - Danny Liew
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
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Takagi M, Atsumi T, Matsuno H, Tamura N, Fujii T, Okamoto N, Takahashi N, Nakajima A, Nakajima A, Tsujimoto N, Nishikawa A, Ishii T, Takeuchi T, Kuwana M. Safety and Effectiveness of Baricitinib for Rheumatoid Arthritis in Japanese Clinical Practice: 24-Week Results of All-Case Post-Marketing Surveillance. Mod Rheumatol 2022:6657693. [PMID: 35932218 DOI: 10.1093/mr/roac089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/27/2022] [Accepted: 08/06/2022] [Indexed: 11/14/2022]
Abstract
OBJECTIVES To assess safety and effectiveness of baricitinib treatment for rheumatoid arthritis (RA) in real-world clinical practice. METHODS This ongoing all-case post-marketing surveillance study (starting September 2017) includes all patients with RA treated with baricitinib in Japan. Safety and effectiveness (disease activity) were assessed for 24 weeks. RESULTS Safety analyses to February 2021 included 4731 patients (initial baricitinib dose: 4 mg/day, n=3058; 2 mg/day, n=1661; other, n=12); 1059 (22.38%) were ≥75 years, and 3362 (71.06%) previously received biologic therapy. Overall observational period was 1863.14 patient-years; 1174 (24.82%) patients discontinued baricitinib before Week 24, mostly for lack of effectiveness (n=478; 10.10%). Adverse events occurred in 1271 (26.87%) patients (serious: 203 [4.29%]; death: 18 [0.38%]). The incidence of herpes zoster, hepatic function disorder, and serious infection was 3.09%, 2.77%, and 1.90%, respectively. Malignancy occurred in 17 patients (0.36%) and major adverse cardiovascular events in seven patients (0.15%). Among patients with effectiveness data, at least 26.57% (Boolean) achieved remission at Week 24. CONCLUSIONS This large nationwide surveillance study evaluated the safety and effectiveness of 24 weeks of baricitinib for RA in real-world clinical practice. Continued surveillance of long-term safety is ongoing.
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Affiliation(s)
- Michiaki Takagi
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Tatsuya Atsumi
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | | | - Naoto Tamura
- Department of Internal Medicine and Rheumatology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Takao Fujii
- Department of Rheumatology and Clinical Immunology, Wakayama Medical University, Wakayama, Japan
| | - Nami Okamoto
- Department of Pediatrics, School of Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Nobunori Takahashi
- Department of Orthopaedics/Rheumatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Ayako Nakajima
- Center for Rheumatic Diseases, Mie University Hospital, Tsu, Japan
| | | | | | | | | | - Masataka Kuwana
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan
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Okui T, Park J. Analysis of the regional difference in the number of multi-drug prescriptions and its predictors in Japan, 2015-2018. BMC Res Notes 2021; 14:367. [PMID: 34544503 PMCID: PMC8454144 DOI: 10.1186/s13104-021-05787-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/14/2021] [Indexed: 11/29/2022] Open
Abstract
Objective Polypharmacy and multi-drug prescription are major public health problems in Japan, but only a few studies have investigated the regional differences. By revealing regional differences in the multi-drug prescriptions, we can infer regions with high rates of multimorbidity or inappropriate prescribing. This study revealed regional differences in multi-drug prescriptions (the number of simultaneous prescriptions of seven or more internal medicines) and investigated the factors affecting the difference using the National Database of Health Insurance Claims and Specific Health Checkups of Japan data. Results The standardized claim ratio (SCR) of the number of multi-drug prescriptions, which corrected the difference in sex and age distribution of prefectures, varied depending on prefectures. A panel data analysis investigating the association between the SCR and explanatory variables (Medical institutions, socioeconomic factors, and physical characteristics of people in prefectures) revealed that the number of public assistance recipients per 1,000 persons was positively and significantly associated with the SCR (Standardized partial regression coefficient = 0.244, p-value = 0.038). In conclusion, regional differences in the number of the multi-drug prescriptions were revealed in Japan, suggesting that public assistance recipients tend to experience multi-drug prescriptions. Supplementary Information The online version contains supplementary material available at 10.1186/s13104-021-05787-2.
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Affiliation(s)
- Tasuku Okui
- Medical Information Center, Kyushu University Hospital, Maidashi 3-1-1 Higashi-ku, Fukuoka City, Fukuoka Prefecture, 812-8582, Japan.
| | - Jinsang Park
- Department of Pharmaceutical Sciences, International University of Health and Welfare, Fukuoka, Japan
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