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Hige S, Aoki K, Nakamoto D, Flaherty JF, Botros I, Mizutani H, Ishizaki A, Konishi H, Yuan J, Jinushi M, Ng LJ. Real-world safety and effectiveness of tenofovir alafenamide for 144 weeks in Japanese patients with chronic hepatitis B. J Viral Hepat 2024; 31:165-175. [PMID: 38163911 DOI: 10.1111/jvh.13912] [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: 08/17/2023] [Revised: 11/17/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024]
Abstract
Tenofovir alafenamide (TAF), a prodrug of tenofovir, delivers high levels of active drug to hepatocytes and is given in a lower dose than tenofovir disoproxil fumarate (TDF). TAF reduces viral replication in patients with chronic hepatitis B (CHB) similar to TDF and has shown a lower risk of the renal and bone toxicities associated with TDF use. This post-marketing surveillance study examined the safety and effectiveness of TAF in treatment-naïve and -experienced CHB patients who received TAF for 144 weeks at real-world clinical sites in Japan. Safety assessments included the incidence of adverse drug reactions (ADRs), renal and bone events, and changes in selected laboratory parameters. Effectiveness was based on the proportion of patients with HBV DNA levels below the lower limit of quantitation or <29 IU/mL. This analysis included 580 patients; 18.4% of whom were treatment-naïve. The cumulative incidence of ADRs was 0.21 per 100 person-months, and the incidence of serious ADRs was 0.01 (95% CI, 0.00-0.04) per 100 person-months. There were no ADRs of declines in estimated glomerular filtration rates, renal failure or proximal tubulopathy. The most common ADR was hypophosphataemia in seven (1.2%) patients. Two (0.4%) patients each had decreased blood phosphorus, bone mineral density decreased, dizziness and alopecia. Overall, the proportion of virologically suppressed patients increased from 68.8% at baseline to 97.5% at Week 144. These results confirm the real-world safety and effectiveness of TAF in Japanese patients with CHB and are consistent with the findings of other evaluations of the safety and efficacy of TAF in CHB.
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Affiliation(s)
- Shuhei Hige
- Department of Gastroenterology, Sapporo-Kosei General Hospital, Sapporo, Japan
| | - Kouji Aoki
- Gilead Sciences K.K., Chiyoda-Ku, Tokyo, Japan
| | | | | | - Irina Botros
- Gilead Sciences, Inc., Foster City, California, USA
| | | | | | | | - Jason Yuan
- Gilead Sciences, Inc., Foster City, California, USA
| | | | - Leslie J Ng
- Gilead Sciences, Inc., Foster City, California, USA
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Lai CH, Shi HY, Tsai CE, Yang YC, Chiu SUF. Cost-Utility Analysis of Tenofovir Alafenamide and Entecavir in Chronic Hepatitis B Patients: A Markov Decision Model. Cancers (Basel) 2024; 16:813. [PMID: 38398204 PMCID: PMC10887268 DOI: 10.3390/cancers16040813] [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: 12/08/2023] [Revised: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
From the perspective of health economics, the evaluation of drug-related cost effectiveness and clinical utility is crucial. We conducted a cost-utility analysis of two first-line drugs, tenofovir alafenamide (TAF) and entecavir (ETV), in the treatment of chronic hepatitis B (CHB) patients. We performed inverse probability of treatment weighting (IPTW) to match the independent variables between the two treatment groups. The incremental cost effectiveness ratio (ICER) of the two treatment groups was simulated using a decision tree with the Markov annual-cycle model. A total of 54 patients treated with TAF and 98 with ETV from January 2016 to December 2020 were enrolled. The total medical cost in the TAF group was NT$76,098 less than that in the ETV group, and TAF demonstrated more effectiveness than ETV by 3.19 quality-adjusted life years (QALYs). When the time horizon was set at 30 years, the ICER of the TAF group compared with the ETV group was -NT$23,878 per QALY, suggesting more cost savings for TAF. Additionally, with the application of TAF, over NT$366 million (approximately US$12 million) can be saved annually. TAF demonstrates cheaper medical costs and more favorable clinical QALYs than ETV. To balance health insurance benefits and cost effectiveness, TAF is the optimal treatment for CHB.
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Affiliation(s)
- Chun-Huang Lai
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Municipal United Hospital, Kaohsiung 80457, Taiwan; (C.-H.L.); (C.-E.T.)
- Department of Healthcare Administration and Medical Informatics, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Hon-Yi Shi
- Department of Healthcare Administration and Medical Informatics, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Business Management, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40433, Taiwan
| | - Cheng-En Tsai
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Municipal United Hospital, Kaohsiung 80457, Taiwan; (C.-H.L.); (C.-E.T.)
| | - Yuan-Chieh Yang
- Department of Laboratory Medicine, Kaohsiung Municipal United Hospital, Kaohsiung 80457, Taiwan;
| | - Si-Un Frank Chiu
- Department of Computer Science, Brown University, Providence, RI 02912, USA;
- Department of Economics, Brown University, Providence, RI 02912, USA
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Pan YR, Liu SQ, He YS, Xue Y, Wang J, Huang R, Wu C, Lu JC, Liu LG. Estimated glomerular filtration rate partially recovered in patients without Hypertriglyceridemia during Tenofovir disoproxil fumarate treatment. Ann Med 2023; 55:760-765. [PMID: 36856541 PMCID: PMC9979984 DOI: 10.1080/07853890.2023.2177725] [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] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND Decrease in estimated glomerular filtration rate (eGFR) during Tenofovir disoproxil fumarate (TDF) treatment remains a concern, and few patients experience partial recovery of eGFR. This study aimed to investigate the risk factors for eGFR recovery in patients with and without hypertriglyceridemia. METHODS A total of 203 patients with chronic HBV infection were prospectively recruited and followed up for three years. Data were collected at baseline, first, second, and third years during TDF treatment. RESULTS Most patients achieved normal ALT (80.0% vs. 82.5%) and undetectable HBV DNA (95.0% vs. 95.6%) in both groups (p > 0.05). For patients with hypertriglyceridemia, eGFR and cholesterol did not change significantly during the 3-year follow-up, while triglyceride (TG) decreased significantly in the first year and persisted at a lower level in the subsequent two years. For patients without hypertriglyceridemia, eGFR declined significantly in the first year of treatment, then gradually recovered during the subsequent two years, and eGFR was negatively correlated with TG at the four time points. Fifteen (15/183, 8.2%) patients without hypertriglyceridemia experienced eGFR partial recovery in the third year. Univariate and multivariate analyses showed that baseline eGFR <90 mL/(min·1.73 m2) (p < 0.01; 95% CI: 0.019-0.284) and age (p < 0.01; 95% CI: 0.817-0.960) were independent risk factors for eGFR recovery. CONCLUSION eGFR partially recovered in patients without hypertriglyceridemia during TDF treatment, and TG regulation might be a useful strategy to hinder renal function decline, although larger, confirmatory studies are necessary to validate our findings.Key messagesFor patients with normal triglyceride, eGFR declined significantly at the first year of TDF treatment, then gradually recovered during the subsequent two years, and eGFR was negatively correlated with TG. Baseline eGFR <90 mL/(min·1.73 m2) and age were independent risk factors for eGFR recovery.
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Affiliation(s)
- Ya-Ru Pan
- Changzhou Clinical Medical College, Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Si-Qi Liu
- Changzhou Clinical Medical College, Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Yi-Shan He
- Changzhou Clinical Medical College, Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Yuan Xue
- Changzhou Clinical Medical College, Nanjing Medical University, Changzhou, Jiangsu Province, China.,Institute of Hepatology, The Third People's Hospital of Changzhou, Changzhou, Jiangsu Province, China
| | - Jian Wang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, Nanjing, Jiangsu Province, China
| | - Rui Huang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, Nanjing, Jiangsu Province, China
| | - Chao Wu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, Nanjing, Jiangsu Province, China
| | - Jian-Chun Lu
- Changzhou Clinical Medical College, Nanjing Medical University, Changzhou, Jiangsu Province, China.,Institute of Hepatology, The Third People's Hospital of Changzhou, Changzhou, Jiangsu Province, China
| | - Long-Gen Liu
- Changzhou Clinical Medical College, Nanjing Medical University, Changzhou, Jiangsu Province, China.,Institute of Hepatology, The Third People's Hospital of Changzhou, Changzhou, Jiangsu Province, China
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Profiling of Peripheral TRBV and CD4+CD25+ Treg in CHB Patients with HBeAg SC during TDF Treatment. J Immunol Res 2023; 2023:1914036. [PMID: 36660247 PMCID: PMC9845053 DOI: 10.1155/2023/1914036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/12/2022] [Accepted: 12/20/2022] [Indexed: 01/12/2023] Open
Abstract
Background It is lacking that markers could predict the prognosis of chronic hepatitis B (CHB) subjects during antiviral treatment, and the related cellular immune mechanism is not fully evaluated. Aim To explore the comprehensive profile of T cell receptor β-chain (TRBV) and CD4+CD25+ regulatory T cell (Treg) in peripheral blood of CHB patients with HBeAg seroconverting (SC) during tenofovir disoproxil fumarate (TDF) treatment. Methods The frequency of CD4+CD25high+ Treg and number of skewed TRBV in 20 HBeAg positive patients were determined at baseline and following every 12 weeks during 96-week TDF treatment. The relationship among serum alanine aminotransferase (ALT) level, HBV DNA load, Treg frequency, and the number of skewed TRBV, respectively, was analyzed for CHB patients. Receiver operative characteristic curve was applied to analyze their diagnostic value for HBeAg SC. Results The number of skewed TRBV at week 48, Treg frequency at week 72, and ALT level at baseline could predict the HBeAg SC or non-SC in CHB patients during 96-week TDF treatment. Moreover, the positive correlation between ALT or HBV DNA and Treg levels or skewed TRBVs was significant in the SC group, but not in non-SC. Conclusions The predictive cutoff value of ALT for HBeAg SC was 178 U/L at baseline. Moreover, the ALT, Treg, and TRBV families would be associated with the prognosis and pathogenesis of CHB patients during TDF treatment.
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Action Mechanisms and Scientific Rationale of Using Nasal Vaccine (HeberNasvac) for the Treatment of Chronic Hepatitis B. Vaccines (Basel) 2022; 10:vaccines10122087. [PMID: 36560498 PMCID: PMC9787858 DOI: 10.3390/vaccines10122087] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 11/29/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022] Open
Abstract
Nasvac (HeberNasvac®) is a novel therapeutic vaccine for chronic hepatitis B (CHB). This product is a formulation of the core (HBcAg) and surface (HBsAg) antigens of the hepatitis B virus (HBV), administered by nasal and subcutaneous routes, in a distinctive schedule of immunizations. In the present review article, we discuss the action mechanisms of HeberNasvac, considering the immunological properties of the product and their antigens. Specifically, we discuss the capacity of HBcAg to activate different pathways of innate immunity and the signal transduction after a multi-TLR agonist effect, and we review the results of recent clinical trials and in vitro studies. Aimed at understanding the clinical results of Nasvac and other therapeutic vaccines under development, we discuss the rationale of administering a therapeutic vaccine through the nasal route and also the current alternatives to combine therapeutic vaccines and antivirals (NUCs). We also disclose potential applications of this product in novel fields of immunotherapy.
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Yip TCF, Lai JCT, Liang LY, Hui VWK, Wong VWS, Wong GLH. Risk of HCC in Patients with HBV, Role of Antiviral Treatment. CURRENT HEPATOLOGY REPORTS 2022; 21:76-86. [DOI: 10.1007/s11901-022-00588-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/19/2022] [Indexed: 08/08/2023]
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