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Nan Y, Garay OU, Lu X, Zhang Y, Xie L, Niu Z, Chen W. Early-stage hepatocellular carcinoma screening in patients with chronic hepatitis B in China: a cost-effectiveness analysis. J Comp Eff Res 2024; 13:e230146. [PMID: 38415341 PMCID: PMC11044951 DOI: 10.57264/cer-2023-0146] [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: 09/25/2023] [Accepted: 02/12/2024] [Indexed: 02/29/2024] Open
Abstract
Aim: To evaluate the cost-effectiveness of seven screening strategies for chronic hepatitis B (CHB) patients in China. Methods: A discrete event simulation model combining a decision tree and Markov structure was developed to simulate a CHB cohort aged ≥40 years on a lifetime horizon and evaluate the costs and health outcomes (quality-adjusted life years [QALYs] gained) of ultrasonography (US), alpha-fetoprotein (AFP), protein induced by vitamin K absence-II (PIVKA-II), AFP+US, AFP+PIVKA-II, GAAD (a diagnostic algorithm based on gender and age combined with results of AFP and PIVKA-II) and GAAD+US. Epidemiologic, clinical performance, utility and cost data were obtained from the literature, expert interviews and real-world data. Uncertainties on key parameters were explored through deterministic and probabilistic sensitivity analyses (DSA and PSA). Results: Compared with other strategies, GAAD+US detected the most HCC patients at early stage, and GAAD was the screening strategy with the lowest average cost per HCC case diagnosed. Using 3× China's 2022 GDP per capita ($38,233.34) as the threshold, the three strategies of US, GAAD and GAAD+US formed a cost-effectiveness frontier. Screening with US, GAAD, or GAAD+US was associated with costs of $6110.46, $7622.05 and $8636.32, and QALYs of 13.18, 13.48 and 13.52, respectively. The ICER of GAAD over US was $4993.39/QALY and the ICER of GAAD+US over GAAD was $26,691.45/QALY, which was less than 3× GDP per capita. Both DSA and PSA proved the stability of the results. Conclusion: GAAD+US was the most cost-effective strategy for early HCC diagnosis among CHB patients which could be considered as the liver cancer screening scheme for the high-risk population in China.
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Affiliation(s)
- Yuemin Nan
- Department of Traditional & Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang, 050051, China
| | | | - Xianzhong Lu
- Roche Diagnostics (Shanghai) Co., Ltd, Shanghai, 200335, China
| | - Yue Zhang
- Roche Diagnostics (Shanghai) Co., Ltd, Shanghai, 200335, China
| | - Li Xie
- Yidu Cloud (Beijing) Technology Co., Ltd, Beijing, 100083, China
| | - Zhongyi Niu
- Yidu Cloud (Beijing) Technology Co., Ltd, Beijing, 100083, China
| | - Wen Chen
- School of Public Health, Fudan University, Shanghai, 200032, China
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Nguyen LBL, Lemoine M, Ndow G, Ward ZJ, Hallet TB, D'Alessandro U, Thursz M, Nayagam S, Shimakawa Y. Treat All versus targeted strategies to select HBV-infected people for antiviral therapy in The Gambia, west Africa: a cost-effectiveness analysis. Lancet Glob Health 2024; 12:e66-e78. [PMID: 38097300 DOI: 10.1016/s2214-109x(23)00467-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 12/18/2023]
Abstract
BACKGROUND Global elimination of hepatitis B virus (HBV) requires expanded uptake of antiviral therapy, potentially by simplifying testing algorithms, especially in resource-limited countries. We evaluated the effectiveness, cost-effectiveness, and budget impact of three strategies that determine eligibility for anti-HBV treatment, as compared with the WHO 2015 treatment eligibility criteria, in The Gambia. METHODS We developed a microsimulation model of natural history using data from the Prevention of Liver Fibrosis and Cancer in Africa programme (known as PROLIFICA) in The Gambia, for an HBV-infected cohort of individuals aged 20 years. The algorithms included in the model were a conventional strategy using the European Association for the Study of the Liver (EASL) 2017 criteria, a simplified algorithm using hepatitis B e antigen and alanine aminotransferase (the Treatment Eligibility in Africa for the Hepatitis B Virus [TREAT-B] score), a Treat All approach for all HBV-infected individuals, and the WHO 2015 criteria. Outcomes to measure effectiveness were disability-adjusted life years (DALYs) and years of life saved (YLS), which were used to calculate incremental cost-effectiveness ratios (ICERs) with the WHO 2015 criteria as the base-case scenario. Costs were assessed from a modified social perspective. A budget impact analysis was also done. We tested the robustness of results with a range of sensitiviy analyses including probabilistic sensitivity analysis. FINDINGS Compared with the WHO criteria, TREAT-B resulted in 4877 DALYs averted and Treat All resulted in 9352 DALYs averted, whereas the EASL criteria led to an excess of 795 DALYs. TREAT-B was cost-saving, whereas the ICER for Treat All (US$2149 per DALY averted) was higher than the cost-effectiveness threshold for The Gambia (0·5 times the country's gross domestic product per capita: $352). These patterns did not change when YLS was the outcome. In a modelled cohort of 5000 adults (aged 20 years) with chronic HBV infection from The Gambia, the 5-year budget impact was $1·14 million for Treat All, $0·66 million for TREAT-B, $1·03 million for the WHO criteria, and $1·16 million for the EASL criteria. Probabilistic sensitivity analysis indicated that among the Treat All, EASL, and TREAT-B algorithms, Treat All would become the most preferred strategy only with a willingness-to-pay threshold exceeding approximately $72 000 per DALY averted or $110 000 per YLS. INTERPRETATION Although the Treat All strategy might be the most effective, it is unlikely to be cost-effective in The Gambia. A simplified strategy such as TREAT-B might be a cost-saving alternative. FUNDING UK Research and Innovation (Medical Research Council). TRANSLATION For the French translation of the abstract see Supplementary Materials section.
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Affiliation(s)
- Liem B Luong Nguyen
- Institut Pasteur, Université Paris Cité, Unité d'Épidémiologie des Maladies Émergentes, Paris, France; CIC Cochin Pasteur, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Maud Lemoine
- Department of Metabolism, Digestion and Reproduction, Division of Digestive Disease, Liver Unit, St Mary's Hospital, Imperial College London, UK; Medical Research Council Unit, London School of Hygiene & Tropical Medicine, Fajara, The Gambia
| | - Gibril Ndow
- Department of Metabolism, Digestion and Reproduction, Division of Digestive Disease, Liver Unit, St Mary's Hospital, Imperial College London, UK; Medical Research Council Unit, London School of Hygiene & Tropical Medicine, Fajara, The Gambia
| | - Zachary J Ward
- Center for Health Decision Science, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Timothy B Hallet
- Medical Research Council Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
| | - Umberto D'Alessandro
- Medical Research Council Unit, London School of Hygiene & Tropical Medicine, Fajara, The Gambia
| | - Mark Thursz
- Department of Metabolism, Digestion and Reproduction, Division of Digestive Disease, Liver Unit, St Mary's Hospital, Imperial College London, UK
| | - Shevanthi Nayagam
- Department of Metabolism, Digestion and Reproduction, Division of Digestive Disease, Liver Unit, St Mary's Hospital, Imperial College London, UK; Medical Research Council Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
| | - Yusuke Shimakawa
- Institut Pasteur, Université Paris Cité, Unité d'Épidémiologie des Maladies Émergentes, Paris, France.
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Li R, Lin X, Wang JY, Wang X, Lu J, Liu Y, Cao Z, Ren S, Ma L, Jin Y, Zheng S, Hu Z, Wang L, Chen X. Cost-effectiveness of combination antiviral treatment with extended duration for hepatitis B e antigen (HBeAg)-negative chronic hepatitis B in China. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1365. [PMID: 34733917 PMCID: PMC8506536 DOI: 10.21037/atm-21-1666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 07/23/2021] [Indexed: 12/30/2022]
Abstract
Background Hepatitis B surface antigen clearance or seroconversion is rarely achieved for patients using nucleoside analogs or pegylated interferon alpha monotherapy approaches. Several recent studies have confirmed the benefit of a combination of these two approaches for selected chronic hepatitis B patients. However, few reports have investigated long-term outcomes or health economic evaluation for hepatitis B surface antigen clearance. The aim of this study was to perform a cost-effectiveness analysis of the long-term use of this combination strategy among selected hepatitis B e antigen-negative patients. Methods Drawing on experience in China, we used a Markov model to simulate disease progression among a population of hepatitis B e antigen-negative chronic hepatitis B patients with surface antigen levels of ≤1,000 IU/mL through a discrete series of health states. We compared nucleoside analog monotherapy to the combination strategy over a prolonged period. We measured lifetime costs, quality-adjusted life-years and incremental cost-effectiveness ratios. Results The combination therapy produced 15.8 quality-adjusted life-years, and cost US dollars (USD) 45,032 per patient. The monotherapy gave 13.9 quality-adjusted life-years, and had a cost of USD 52,064. The incremental cost-effectiveness ratio of the monotherapy (USD −3,755 per quality-adjusted life-year) did not obtain extended dominance over combination therapy. The most cost-effective option was combination therapy among patients with hepatitis B surface antigen levels of ≤10 IU/mL, which had the lowest calculated cost of USD 35,318 and most quality-adjusted life-years (16.7). Conclusions A long-term combination treatment strategy for selected hepatitis B e antigen-negative chronic hepatitis B patients may prolong quality-adjusted life-years compared with nucleoside analog monotherapy. Chronic hepatitis B patients with a hepatitis B surface antigen level of ≤10 IU/mL were the most cost-effective population under this strategy.
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Affiliation(s)
- Runqin Li
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Xiao Lin
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Jing-Yue Wang
- Division of Hepatology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Xiaomo Wang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Junfeng Lu
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Yali Liu
- The Third Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Zhenhuan Cao
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Shan Ren
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Lina Ma
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Yi Jin
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Sujun Zheng
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Zhongjie Hu
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Li Wang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Xinyue Chen
- The First Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
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Qama A, Allard N, Cowie B, Davis JS, Davies J. Hepatitis B in the Northern Territory: insights into the changing epidemiology of an ancient condition. Intern Med J 2021; 51:910-922. [PMID: 32975893 PMCID: PMC8362129 DOI: 10.1111/imj.15069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 09/04/2020] [Accepted: 09/10/2020] [Indexed: 01/04/2023]
Abstract
Background Aboriginal and Torres Strait Islander people are disproportionately affected by hepatitis B virus (HBV) infection. A proposed mismatch between standard vaccines and the HBV/C4 sub‐genotype prevalent in Aboriginal people in the Northern Territory (NT) may reduce vaccine effectiveness. Aims To determine HBV prevalence in the NT by Indigenous status and to explore patterns of immunity following implementation of universal vaccination, using a large longitudinal diagnostic dataset. Methods A retrospective analysis of all available HBV serology results in the NT from 1991 to 2011 was conducted, with HBV prevalence and vaccination status analysed according to adigenous status, age and sex using individuals' patterns of HBsAg, anti‐HBs and anti‐HBc serology over repeated tests. Results 100 790 individuals were tested (33.4% Indigenous) between 1991 and 2011 (26.1% of the 2011 NT population), with a total of 211 802 tests performed. In 2011, the proportion of HBV positive individuals in the NT was 3.17% (5.22% in Indigenous populations) compared to previous 2011 estimates of 1.70% (3.70% in Indigenous populations). The vaccine failure rate was lower than expected with only one presumed vaccinated person subsequently developing HBsAg positivity (0.02%). Evidence of suboptimal vaccine efficacy by breakthrough anti‐HBc positivity in vaccinated individuals was demonstrated in 3.1% of the vaccinated cohort, of which 86.4% identified as Indigenous (HR 1.17). No difference in HBeAg positivity or seroconversion was observed between Indigenous and non‐Indigenous individuals living with CHB. Conclusions The burden of CHB in Indigenous people in the NT has previously been underestimated. A higher HBV prevalence in the NT than described in previous cross‐sectional studies was found, including a higher prevalence in Indigenous people. Evidence of suboptimal vaccine efficacy was demonstrated predominantly in Indigenous individuals.
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Affiliation(s)
- Ashleigh Qama
- WHO Collaborating Centre for Viral Hepatitis, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.,Department of Medicine (RMH), University of Melbourne, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Nicole Allard
- WHO Collaborating Centre for Viral Hepatitis, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.,Department of Medicine (RMH), University of Melbourne, Royal Melbourne Hospital, Parkville, Victoria, Australia.,cohealth, Parkville, Victoria, Australia
| | - Benjamin Cowie
- WHO Collaborating Centre for Viral Hepatitis, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.,Department of Medicine (RMH), University of Melbourne, Royal Melbourne Hospital, Parkville, Victoria, Australia.,Victorian Infectious Diseases Service, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Joshua S Davis
- Global and Tropical Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia.,Division of Medicine, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Jane Davies
- Global and Tropical Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia.,The Infectious Diseases Department, Royal Darwin Hospital, Darwin, Northern Territory, Australia
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Ending risk-group HBV vaccination for MSM after the introduction of universal infant HBV vaccination: A mathematical modelling study. Vaccine 2021; 39:2867-2875. [PMID: 33896665 DOI: 10.1016/j.vaccine.2021.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Risk-group HBV vaccination for men who have sex with men (MSM) was introduced in the Netherlands in 2002, followed by universal infant vaccination in 2011, that will enable termination of risk-group vaccination over time. The introduction of pre-exposure prophylaxis (PrEP) for HIV prevention might result in increased HBV testing and vaccination against HBV. The aim of this study was to investigate the impact of the transition from risk-group to universal HBV vaccination, accounting for improvements in HBV testing and treatment, as well as the introduction of PrEP. METHODS We developed a mathematical model for HBV transmission among MSM. Universal vaccination was modelled by assigning some MSM (5-15% in 2028 increasing to 80-90% in 2033 and thereafter) to be vaccinated when they become sexually active. We investigated different scenarios assuming 0.5% extra vaccination rate and 0.5% extra testing rate due to PrEP consultations; and 5% of HIV-negative MSM on PrEP, that will reduce the probability of HBV acquisition by 88%. RESULTS Universal vaccination resulted in a reduction of 24% (interquartile range; 22-25%) of the total number of HBV infections among MSM estimated to occur from 2020 to 2070. With universal vaccination, terminating risk-group vaccination in 2030 or 2040 resulted in 30% or 10% more HBV infections over 2020-2070, respectively, compared to continuation of risk-group vaccination until 2070. With PrEP and continued risk-group vaccination, the total number of HBV infections over 2020-2070 was reduced by 13%. CONCLUSIONS Universal HBV vaccination can lead to a major reduction in HBV incidence among MSM in the future. The reduction becomes smaller when ending risk-group HBV vaccination, but larger by PrEP use for HIV prevention. Efforts to keep high levels of HBV vaccination, testing, and treatment have to be continued in the coming decades in order to eliminate HBV as a health threat for MSM.
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Wu S, Ai H, Zhang K, Yun H, Xie F. Long Non-Coding RNA EGOT Promotes the Malignant Phenotypes of Hepatocellular Carcinoma Cells and Increases the Expression of HMGA2 via Down-Regulating miR-33a-5p. Onco Targets Ther 2019; 12:11623-11635. [PMID: 32021242 PMCID: PMC6942514 DOI: 10.2147/ott.s218308] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/25/2019] [Indexed: 12/28/2022] Open
Abstract
Background Chronic hepatitis C virus (HCV) infection is an important risk factor for hepatocellular carcinoma (HCC). EGOT is a long non-coding RNA (lncRNA) induced after HCV infection that increases viral replication by antagonizing the antiviral response. Interestingly, EGOT also acts as a crucial regulator in multiple cancers. However, its role in HCC remains unclear. Methods Real-time PCR (RT-PCR) was used to detect the expression of EGOT in HCC samples and cell lines. CCK-8 assay and colony formation assay were performed to evaluate the effect of EGOT on proliferation. Scratch healing assay and transwell assay were used to detect the changes of migration and invasion. Flow cytometry was used to detect the effect of EGOT on apoptosis. Interaction between EGOT and miR-33a-5p was determined by bioinformatics analysis, RT-PCR, and dual-luciferase reporter assay. Western blot was used to confirm that high mobility group protein A2 (HMGA2) could be modulated by EGOT. Results Compared with normal liver tissues, the expression level of EGOT in HCC tissues was significantly up-regulated. EGOT markedly regulated viability, migration and invasion of HCC cells. The expression level of EGOT was negatively correlated the expression level of miR-33a-5p. It is also confirmed that EGOT could specifically bind to miR-33a-5p and could reduce its expression, in turn, up-regulate the expression of HMGA2. Conclusion Our data imply that EGOT may be a novel therapeutic target for HCC, and highlights the key role of EGOT/miR-33a-5p/HMGA2 in the progression of this deadly disease.
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Affiliation(s)
- Shimin Wu
- Center for Clinical Laboratory, General Hospital of the Yangtze River Shipping, Wuhan Brain Hospital, Wuhan 430030, People's Republic of China
| | - Hongwu Ai
- Center for Clinical Laboratory, Wuhan Kangjian Maternal and Infant Hospital, Wuhan 430050, People's Republic of China
| | - Kehui Zhang
- Wuhan Center for Clinical Laboratory, Wuhan Fourth Hospital, Wuhan 430030, People's Republic of China.,Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430032, People's Republic of China
| | - Hao Yun
- Wuhan Center for Clinical Laboratory, Wuhan Fourth Hospital, Wuhan 430030, People's Republic of China.,Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430032, People's Republic of China
| | - Fei Xie
- Wuhan Center for Clinical Laboratory, Wuhan Fourth Hospital, Wuhan 430030, People's Republic of China.,Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430032, People's Republic of China
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Yin XR, Liu ZH, Liu J, Liu YY, Xie L, Tao LB, Jia JD, Cui FQ, Zhuang GH, Hou JL. First line nucleos(t)ide analog monotherapy is more cost-effective than combination strategies in hepatitis B e antigen-positive chronic hepatitis B patients in China. Chin Med J (Engl) 2019; 132:2315-2324. [PMID: 31567376 PMCID: PMC6819033 DOI: 10.1097/cm9.0000000000000445] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Nucleos(t)ide analog (NA) in combination with peginterferon (PegIFN) therapy in patients with hepatitis B e antigen (HBeAg)-positive chronic hepatitis B (CHB) shows better effectiveness than NA monotherapy in hepatitis B surface antigen loss, termed "functional cure," based on previous published studies. However, it is not known which strategy is more cost-effective on functional cure. The aim of this study was to analyze the cost-effectiveness of first-line monotherapies and combination strategies in HBeAg-positive CHB patients in China from a social perspective. METHODS A Markov model was developed with functional cure and other five states including CHB, compensated cirrhosis, decompensated cirrhosis, hepatocellular carcinoma, and death to assess the cost-effectiveness of seven representative treatment strategies. Entecavir (ETV) monotherapy and tenofovir disoproxil fumarate (TDF) monotherapy served as comparators, respectively. RESULTS In the two base-case analysis, compared with ETV, ETV generated the highest costs with $44,210 and the highest quality-adjusted life-years (QALYs) with 16.78 years. Compared with TDF, treating CHB patients with ETV and NA - PegIFN strategies increased costs by $7639 and $6129, respectively, gaining incremental QALYs by 2.20 years and 1.66 years, respectively. The incremental cost-effectiveness ratios were $3472/QALY and $3692/QALY, respectively, which were less than one-time gross domestic product per capita. One-way sensitivity analysis and probabilistic sensitivity analyses showed the robustness of the results. CONCLUSION Among seven treatment strategies, first-line NA monotherapy may be more cost-effective than combination strategies in HBeAg-positive CHB patients in China.
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Affiliation(s)
- Xue-Ru Yin
- Hepatology Unit, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zhi-Hong Liu
- Hepatology Unit, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jing Liu
- Health Economics Research Institute, Sun Yat-Sen University, Guangzhou, Guangdong 510085, China
| | - Yuan-Yuan Liu
- Hepatology Unit, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Li Xie
- Department of Epidemiology and Biostatistics, School of Public Health, Xi’an Jiao Tong University Health Science Center, Xi’an, Shaanxi 710061, China
| | - Li-Bo Tao
- Health Economics Research Institute, Sun Yat-Sen University, Guangzhou, Guangdong 510085, China
| | - Ji-Dong Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Fu-Qiang Cui
- School of Public Health, Peking University, Beijing 100191, China
| | - Gui-Hua Zhuang
- School of Public Health, Xi’an Jiao Tong University Health Science Center, Xi’an, Shaanxi 710061, China
| | - Jin-Lin Hou
- Hepatology Unit, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
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Zhang Z, Li J, Wang P, He T, Ouyang Y, Huang Y. Nomogram for cirrhosis in patients with chronic hepatitis B: A simple self-assessed scale for individual risk of cirrhosis. Sci Rep 2017; 7:17493. [PMID: 29235488 PMCID: PMC5727495 DOI: 10.1038/s41598-017-17685-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 11/29/2017] [Indexed: 12/26/2022] Open
Abstract
The aim of this retrospective study was to establish a simple self-assessed scale for individual risk of cirrhosis in patients with chronic hepatitis B. A total of 1808 consecutive patients were enrolled and analyzed. According to the results of multivariate logistic regression analysis, a simple nomogram was calculated for cirrhosis. The area under receiver operating characteristic curves (AUROCs) were calculated to compare the diagnostic accuracy of nomogram with aspartate aminotransferase to platelet ratio index (APRI), fibrosis index based on the four factors (FIB-4), and S index. The AUROCs of nomogram for cirrhosis were 0.807 (adjusted AUROC 0.876) in model group and 0.794 (adjusted AUROC0.866) in validation group. DeLong's test and Brier Score further demonstrated that nomogram was superior to APRI, FIB-4 and S index in both model group and validation group. The patients with nomogram <0.07 could be defined as low risk group with cirrhosis prevalence lower than 4.3% (17/397). The patients with nomogram >0.52 could be defined as high risk group with cirrhosis prevalence higher than 73.0% (119/163). In conclusion, as a self-assessed style, simple, non-invasive, economical, convenient, and repeatable scale, nomogram is suitable to serve as a massive health screening tool for cirrhosis in CHB patients and further external validation is needed.
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Affiliation(s)
- Zhiqiao Zhang
- Department of Infectious Diseases, Shunde Hospital of Southern Medical University, Shunde, Guangdong, China
| | - Jing Li
- Department of Infectious Diseases, Shunde Hospital of Southern Medical University, Shunde, Guangdong, China
| | - Peng Wang
- Department of Infectious Diseases, Shunde Hospital of Southern Medical University, Shunde, Guangdong, China.
| | - Tingshan He
- Department of Infectious Diseases, Shunde Hospital of Southern Medical University, Shunde, Guangdong, China
| | - Yanling Ouyang
- Department of Infectious Diseases, Shunde Hospital of Southern Medical University, Shunde, Guangdong, China
| | - Yiyan Huang
- Department of Infectious Diseases, Shunde Hospital of Southern Medical University, Shunde, Guangdong, China
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Cost-Effectiveness Comparison Between the Response-Guided Therapies and Monotherapies of Nucleos(t)ide Analogues for Chronic Hepatitis B Patients in China. Clin Drug Investig 2017; 37:233-247. [PMID: 27928739 DOI: 10.1007/s40261-016-0486-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVE Nucleos(t)ide analogue (NA) monotherapies are typically used as the primary treatment for chronic hepatitis B (CHB) patients, including lamivudine (LAM), telbivudine (TBV), adefovir (ADV), entecavir (ETV) and tenofovir (TDF). For high-resistance NAs (LAM, TBV, ADV), they can generate excellent clinical outcomes by using response-guided therapy; however, their pharmacoeconomic profiles remain unclear in China. We aimed to evaluate the cost effectiveness between response-guided therapies and monotherapies of NAs for Chinese hepatitis B e-antigen (HBeAg)-positive and -negative CHB patients. METHODS We constructed a Markov model to simulate CHB progression associated with 12 treatment strategies using effectiveness and cost data from the published literature. We measured the lifetime costs, quality adjusted life-years (QALYs) and incremental cost-effectiveness ratios (ICERs). One-way sensitivity (especially to extend the range of the TDF price) and probabilistic sensitivity analyses were used to explore the uncertainties of the model. RESULTS For both HBeAg-positive and -negative patients, no treatment strategy generated the lowest lifetime costs (US$31,185-US$31,338) and QALYs (7.54-7.58). ETV and TDF monotherapies were not dominated by other treatments, whereas, the ICER of ETV monotherapy was the lowest (US$6112/QALY-US$8533/QALY). For each high-resistance NA, compared with its monotherapy, the ICERs of its response-guided therapies were below the willingness-to-pay threshold of US$22,833/QALY. Additionally, TDF monotherapy was the preferred treatment when its price dropped to US$1820/year or lower. CONCLUSION Among 12 treatment strategies evaluated, ETV monotherapy is the most cost-effective treatment for treatment-naive CHB patients in China. The response-guided therapies of high-resistance NAs are more cost-effective than their monotherapies.
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Raffetti E, Fattovich G, Donato F. Incidence of hepatocellular carcinoma in untreated subjects with chronic hepatitis B: a systematic review and meta-analysis. Liver Int 2016; 36:1239-51. [PMID: 27062182 DOI: 10.1111/liv.13142] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 03/31/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS In the natural history of hepatitis B virus (HBV) chronic infection, the hepatocellular carcinoma (HCC) risk is unclear. We assessed incidence and predictors of HCC by a systematic review and meta-analysis. METHODS We included longitudinal studies and randomized controlled trials assessing HCC incidence in untreated patients with HBV chronic infection. Incidence rates and their 95% confidence intervals were extracted by each study and pooled together in random effects models. RESULTS Sixty-six studies were included with a total of 347 859 patients. According to liver disease status, the summary incidence rates were in Europe, North America and East Asia, respectively: (a) asymptomatic carriers: 0.07 (95% confidence interval: 0.05-0.09), 0.19 (0.07-0.31) and 0.42 (0.21-0.63) per 100 person-years, respectively; (b) inactive carriers: 0.03 (0.0-0.10), 0.17 (0.02-0.62) and 0.06 (0.02-0.10), respectively; (c) chronic hepatitis: 0.12 (0.0-0.27), 0.48 (0.22-0.91) and 0.49 (0.32-0.66), respectively; (d) compensated cirrhosis (Child-Pugh A): 2.03 (1.30-2.77), 2.89 (1.23-4.55) and 3.37 (2.48-4.26) respectively. Multivariate meta-regression showed a significant increase in incidence rates for age, and for status of a symptomatic carrier, chronic hepatitis and compensated cirrhosis compared to inactive carrier, but not for geographical area after adjusting for age. An increase in the incidence rates was also observed for alcohol intake ≥60 g/dl, HBV genotype C with respect to B and HBV-DNA serum levels >2000 IU/ml, in Asian studies. CONCLUSIONS Hepatocellular carcinoma risk in untreated subjects with HBV chronic infection is strongly related with age and liver disease status.
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Affiliation(s)
- Elena Raffetti
- Unit of Hygiene, Epidemiology and Public Health, University of Brescia, Brescia, Italy
| | | | - Francesco Donato
- Unit of Hygiene, Epidemiology and Public Health, University of Brescia, Brescia, Italy
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11
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Nayagam S, Conteh L, Sicuri E, Shimakawa Y, Suso P, Tamba S, Njie R, Njai H, Lemoine M, Hallett TB, Thursz M. Cost-effectiveness of community-based screening and treatment for chronic hepatitis B in The Gambia: an economic modelling analysis. Lancet Glob Health 2016; 4:e568-78. [PMID: 27443782 DOI: 10.1016/s2214-109x(16)30101-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 05/05/2016] [Accepted: 05/23/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND Despite the high burden of hepatitis B virus (HBV) infection in sub-Saharan Africa, absence of widespread screening and poor access to treatment leads to most people remaining undiagnosed until later stages of disease when prognosis is poor and treatment options are limited. We examined the cost-effectiveness of community-based screening and early treatment with antiviral therapy for HBV in The Gambia. METHODS In this economic evaluation, we combined a decision tree with a Markov state transition model to compare a screen and treat intervention consisting of adult community-based screening using a hepatitis B surface antigen (HBsAg) rapid test and subsequent HBV antiviral therapy versus current practice, in which there is an absence of publicly provided screening or treatment for HBV. We used data from the PROLIFICA study to parameterise epidemiological, primary screening, and cost information, and other model parameter inputs were obtained from a literature search. Outcome measures were cost per disability-adjusted life-year (DALY) averted; cost per life-year saved; and cost per quality-adjusted life-year (QALY) gained. We calculated the incremental cost-effectiveness ratios (ICERs) between current practice and the screen and treat intervention. Costs were assessed from a health provider perspective. Costs (expressed in 2013 US$) and health outcomes were discounted at 3% per year. FINDINGS In The Gambia, where the prevalence of HBsAg is 8·8% in people older than 30 years, adult screening and treatment for HBV has an incremental cost-effectiveness ratio (ICER) of $540 per DALY averted, $645 per life-year saved, and $511 per QALY gained, compared with current practice. These ICERs are in line with willingness-to-pay levels of one times the country's gross domestic product per capita ($487) per DALY averted, and remain robust over a wide range of epidemiological and cost parameter inputs. INTERPRETATION Adult community-based screening and treatment for HBV in The Gambia is likely to be a cost-effective intervention. Higher cost-effectiveness might be achievable with targeted facility-based screening, price reductions of drugs and diagnostics, and integration of HBV screening with other public health interventions. FUNDING European Commission.
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Affiliation(s)
- Shevanthi Nayagam
- Division of Digestive Diseases, St Mary's Hospital, Imperial College, London, UK; Department of Infectious Disease Epidemiology, School of Public Health, Imperial College, London, UK.
| | - Lesong Conteh
- Health Economics Group, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College, London, UK
| | - Elisa Sicuri
- Health Economics Group, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College, London, UK; ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - Yusuke Shimakawa
- Medical Research Council Laboratories, The Gambia Unit, Fajara, The Gambia; Unité d'Épidémiologie des Maladies Émergentes, Institut Pasteur, Paris, France
| | - Penda Suso
- Medical Research Council Laboratories, The Gambia Unit, Fajara, The Gambia
| | - Saydiba Tamba
- Medical Research Council Laboratories, The Gambia Unit, Fajara, The Gambia
| | - Ramou Njie
- International Agency for Research on Cancer (IARC), Lyon, France
| | - Harr Njai
- Medical Research Council Laboratories, The Gambia Unit, Fajara, The Gambia
| | - Maud Lemoine
- Division of Digestive Diseases, St Mary's Hospital, Imperial College, London, UK; Medical Research Council Laboratories, The Gambia Unit, Fajara, The Gambia
| | - Timothy B Hallett
- Department of Infectious Disease Epidemiology, School of Public Health, Imperial College, London, UK
| | - Mark Thursz
- Division of Digestive Diseases, St Mary's Hospital, Imperial College, London, UK
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12
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Ke W, Zhang C, Liu L, Gao Y, Yao Z, Ye X, Zhou S, Yang Y. Cost-effectiveness analysis of tenofovir disoproxil fumarate for treatment of chronic hepatitis B in China. Hepatol Int 2016; 10:924-936. [PMID: 27271357 DOI: 10.1007/s12072-016-9741-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 05/17/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND Tenofovir disoproxil fumarate (TDF) is newly available for treatment of chronic hepatitis B patients in China. To date, no study has been conducted to examine the cost-effectiveness of this treatment. The aim of this study was to estimate the cost-effectiveness of TDF versus four oral nucleos(t)ide analogs [lamivudine (LAM), adefovir (ADV), telbivudine (LdT), and entecavir (ETV)] and from a pharmacoeconomic perspective to assess current drug pricing for TDF. METHODS Based on Chinese healthcare perspectives, a Markov model was applied to simulate the lifetime (40-year time span) costs and quality-adjusted life-years (QALYs) for five different monotherapy strategies. Two kinds of rescue combination strategies (base-case: LAM + ADV then ETV + ADV; alternative: directly using ETV + ADV) were separately considered for treatment of patients refractory to monotherapy. Model parameters (including disease transition, cost, and utility) were obtained from previous Chinese population studies. Both branded and generic drugs were separately analyzed. Study model uncertainties were assessed by one-way and probabilistic sensitivity analyses. Two-way sensitivity analysis was used to explore uncertainties between efficacy and price of TDF. RESULTS In the base-case analysis, the lowest lifetime cost and the best cost-effectiveness ratio were obtained by ETV, which was considered the reference treatment. LAM, ADV, and LdT treatments had significantly greater costs and lower efficacies. Compared to ETV, TDF was more effective but also more expensive. The incremental cost-effectiveness ratios of TDF versus ETV were much higher than the willing-to-pay threshold of $20,466 US dollars (USD) per QALY gained (3 × gross domestic product per capita of China, 2014). TDF would be the most cost-effective strategy if the annual cost did not exceed $2260 USD and $1600 USD for branded and generic drugs, respectively. CONCLUSIONS For Chinese chronic hepatitis B patients, ETV is still the most cost-effective strategy over TDF and other nucleos(t)ide analogs, with a threshold of $20,466 USD/QALY gained.
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Affiliation(s)
- Weixia Ke
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
| | - Chi Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
| | - Li Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
| | - Yanhui Gao
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
| | - Zhenjiang Yao
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
| | - Xiaohua Ye
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
| | - Shudong Zhou
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
| | - Yi Yang
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China.
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13
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Xu Y, Wu XN, Shi YW, Wei W, Yang AT, Sun YM, Zhao WS, You H. Baseline Hepatitis B Virus DNA Level is a Promising Factor for Predicting the 3 (rd) Month Virological Response to Entecavir Therapy: A Study of Strict Defined Hepatitis B virus Induced Cirrhosis. Chin Med J (Engl) 2016; 128:1867-72. [PMID: 26168824 PMCID: PMC4717924 DOI: 10.4103/0366-6999.160488] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Cirrhosis is a common complication of chronic hepatitis B. It remains unclear if viral and biochemical parameters at baseline affect virological response to entecavir and therefore warrant investigation. In the present study, we aimed to evaluate the efficacy of entecavir therapy by monitoring virological response at the end of the 3 rd month of treatment and try to figure out whether baseline factors could help predict it in a cohort of hepatitis B virus (HBV) compensated cirrhosis patients and to determine the cut-off value of a predicting parameter. METHODS A total of 91 nucleos(t)ide-naïve patients with HBV induced cirrhosis (compensatory stage) were enrolled in a prospective cohort. HBV DNA and alanine aminotransferase (ALT) were tested at baseline and monitored every 3-6 months after starting therapy. RESULTS Of all 91 patients, the median follow-up time was 12 (9-24) months. Overall, 64 patients (70.3%) achieved virological response in the 3 rd month. Univariate analysis showed that the 3 rd month virological response can be predicted by baseline HBV DNA levels (P < 0.001, odds ratio [OR]: 2.13, 95% confidence interval [CI]: 1.44-3.15), ALT value (P = 0.023, OR: 1.01, 95% CI: 1.00-1.01) and hepatitis B e antigen (HBeAg) negativity (P = 0.016, OR: 0.30, 95% CI: 0.11-0.80). Multiple regression analysis showed baseline HBV DNA level was the only parameter related to full virological response. Higher baseline HBV DNA strata indicated a higher probability that HBV DNA remains detectable at the 3 rd month (P = 0.001). Area under receiver operating characteristic curve for determining the 3 rd month virological response by baseline HBV DNA was 77.6% (95% CI: 66.7-85.2%), with a best cut-off value of 5.8 log 10 . CONCLUSIONS Baseline HBV DNA, HBeAg negativity, and ALT were independent factors contributing to virological response at the 3 rd month. Further, multiple regression showed that HBV DNA level was the only parameter predicting full virological response as early as the 3 rd month, in this cirrhosis cohort.
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Affiliation(s)
| | | | | | | | | | | | | | - Hong You
- Department of Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Diseases, Beijing 100050, China
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14
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Zhang C, Ke W, Liu L, Gao Y, Yao Z, Ye X, Zhou S, Yang Y. Cost-effectiveness comparison of lamivudine plus adefovir combination treatment and nucleos(t)ide analog monotherapies in Chinese chronic hepatitis B patients. Drug Des Devel Ther 2016; 10:897-910. [PMID: 27041994 PMCID: PMC4780199 DOI: 10.2147/dddt.s98200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND/AIM Lamivudine (LAM) plus adefovir (ADV) combination therapy is clinically efficacious for treating chronic hepatitis B (CHB) patients in China, but no pharmacoeconomic evaluations of this strategy are available. The aim of this study was to examine the cost-effectiveness of LAM plus ADV combination treatment compared with five other nucleos(t)ide analog monotherapies (LAM, ADV, telbivudine [TBV], entecavir [ETV], and tenofovir [TDF]). METHODS To simulate the lifetime (40-year time span) costs and quality-adjusted life-years (QALYs) for different therapy options, a Markov model that included five initial monotherapies and LAM plus ADV combination as an initial treatment was developed. Two kinds of rescue combination strategies (base-case: LAM + ADV then ETV + ADV; alternative: direct use of ETV + ADV) were considered separately for treating patients refractory to initial therapy. One-way and probabilistic sensitivity analyses were used to explore model uncertainties. RESULTS In base-case analysis, ETV had the lowest lifetime cost and served as the reference therapy. Compared to the reference, LAM, ADV, and TBV had higher costs and lower efficacy, and were completely dominated by ETV. LAM plus ADV combination therapy or TDF was more efficacious than ETV, but also more expensive. Although the incremental cost-effectiveness ratios of combination therapy or TDF were both higher than the willingness-to-pay threshold of $20,466/QALY gained for the reference treatment, in an alternative scenario analysis LAM plus ADV combination therapy would be the preferable treatment option. CONCLUSION ETV and LAM plus ADV combination therapy are both cost-effective strategies for treating Chinese CHB patients.
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Affiliation(s)
- Chi Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Weixia Ke
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Li Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Yanhui Gao
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Zhenjiang Yao
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Xiaohua Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Shudong Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
| | - Yi Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, Guangdong, People’s Republic of China
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15
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Tu T, Calabro SR, Lee A, Maczurek AE, Budzinska MA, Warner FJ, McLennan SV, Shackel NA. Hepatocytes in liver injury: Victim, bystander, or accomplice in progressive fibrosis? J Gastroenterol Hepatol 2015; 30:1696-704. [PMID: 26239824 DOI: 10.1111/jgh.13065] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 07/26/2015] [Indexed: 12/11/2022]
Abstract
Chronic liver disease causes significant morbidity and mortality through progressive fibrosis, cirrhosis, and liver cancer. The classical theory of fibrogenesis has hepatic stellate cells (HSCs) as the principal and only significant source of abnormal extracellular matrix (ECM). Further, HSCs have the major role in abnormal ECM turnover. It is the death of hepatocytes, as the initial target of injury, that initiates a sequence of events including the recruitment of inflammatory cells and activation of HSCs. Following this initial response, the ongoing insult to hepatocytes is regarded as perpetuating injury, but otherwise, hepatocytes are regarded as "victims" and "bystanders" in progressive fibrosis. Recent developments, however, challenge this view and suggest the concept of the hepatocyte being an active participant in liver injury. It is clear now that hepatocytes undergo phenotypic changes, adapt to injury, and react to the altered microenvironment. In this review, we describe studies showing that hepatocytes contribute to progressive fibrosis by direct manipulation of the surrounding ECM and through signaling to effector cells, particularly HSCs and intrahepatic immune cells. Together, these findings suggest an active "accomplice" role for the hepatocyte in progressive liver fibrosis and highlight novel pathways that could be targeted for development of future anti-fibrotic therapies.
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Affiliation(s)
- Thomas Tu
- Liver Injury and Cancer, Centenary Institute, Sydney, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Sarah R Calabro
- Liver Injury and Cancer, Centenary Institute, Sydney, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Aimei Lee
- Liver Injury and Cancer, Centenary Institute, Sydney, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Annette E Maczurek
- Liver Injury and Cancer, Centenary Institute, Sydney, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Magdalena A Budzinska
- Liver Injury and Cancer, Centenary Institute, Sydney, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Fiona J Warner
- Liver Injury and Cancer, Centenary Institute, Sydney, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Susan V McLennan
- Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia.,Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Nicholas A Shackel
- Liver Injury and Cancer, Centenary Institute, Sydney, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia.,A. W. Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
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16
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Zhang C, Ke W, Gao Y, Zhou S, Liu L, Ye X, Yao Z, Yang Y. Cost-effectiveness analysis of antiviral therapies for hepatitis B e antigen-positive chronic hepatitis B patients in China. Clin Drug Investig 2015; 35:197-209. [PMID: 25672930 DOI: 10.1007/s40261-015-0273-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND OBJECTIVE Several antiviral therapies are now available for patients with chronic hepatitis B (CHB), but the most cost-effective strategy for Chinese patients is unclear. The aim of this study was to estimate the long-term cost effectiveness of the antiviral treatments (lamivudine, adefovir, telbivudine and entecavir) for hepatitis B e antigen (HBeAg)-positive CHB patients in China. METHODS A Markov model was used to simulate the life-time (41-year time span) costs and effectiveness associated with antiviral treatments from the perspective of Chinese healthcare. Relative model parameters were derived from Chinese population studies. Costs and effectiveness were discounted at 5 %. The highest retail prices for generic and branded drug prices were also considered. Probabilistic sensitivity analysis and one-way sensitivity analysis were used to explore model uncertainties. RESULTS In the base-case analysis, the least quality-adjusted life years (QALYs) were obtained with adefovir as the reference strategy. Lamivudine generated the highest incremental cost-effectiveness ratio (ICER), with an additional US$35,000 needed to gain one additional QALY for generic drugs and US$36,000 for branded drugs. Entecavir had the lowest ICER of US$7,600 and US$9,100, respectively. The projected 10-year cumulative incidences of compensated cirrhosis, decompensated cirrhosis, hepatocellular carcinoma (HCC) and mortality for entecavir were lower than the other strategies. In probabilistic sensitivity analyses, entecavir was the preferred option at a threshold of US$18,924 per QALY. CONCLUSIONS In patients with HBeAg-positive CHB in China, entecavir is a cost-effective option compared with other therapies for CHB.
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Affiliation(s)
- Chi Zhang
- Department of Epidemiology and Biostatistics and Guangdong Key Lab of Molecular Epidemiology, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310, Guangdong, China
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17
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Tong MJ, Huynh TT, Siripongsakun S, Chang PW, Tong LT, Ha YP, Mena EA, Weissman MF. Predicting clinical outcomes in patients with HBsAg-positive chronic hepatitis. Hepatol Int 2015. [PMID: 26219830 DOI: 10.1007/s12072-015-9651-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND AIMS The progression of HBsAg-positive chronic hepatitis is insidious and unpredictable. Identification of factors leading to either a benign or more serious clinical outcome may assist in decision making for antiviral therapy. METHODS From 1989 to 1998, 130 untreated patients with chronic hepatitis were enrolled in a prospective study and followed every 3-6 months with liver and virologic tests, platelet counts and alpha-fetoprotein (AFP) measurements. RESULTS During a mean follow-up of 107 ± 86 months, 16 (12.3 %) chronic hepatitis patients progressed to cirrhosis (annual rate 1.4 %), and 23 (17.7 %) reverted to being inactive carriers (annual rate 2.1 %). Compared to baseline values, chronic hepatitis patients who progressed to cirrhosis exhibited declines in mean platelet counts (225.7-195.2 mm(3), p = 0.008-0.04) during the first 4 years of follow-up, while those who reverted to being inactive carriers had substantial reductions in mean levels of AST (83.5-27.2 u/l, p < 0.001-0.002) and ALT (100.2-29.2 u/l, p < 0.001-0.007). In addition, during spontaneous alanine aminotransferase (ALT) flares, patients progressing to cirrhosis had concomitant elevations of AFP levels, while patients who became inactive carriers maintained normal AFP values during ALT flares (13.45 vs. 4.65 ng/ml, p = 0.001). These AFP differences during episodes of ALT flares were similarly observed when analyzed in two separate cohorts of cirrhosis and inactive carrier patients. CONCLUSION Patients with chronic hepatitis who progressed to cirrhosis exhibited declines in platelet counts and had AFP elevations during ALT flares. To prevent progression, serial measurements of these parameters during the chronic hepatitis stage will assist in identifying patients requiring antiviral therapy.
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Affiliation(s)
- Myron John Tong
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA.
- Division of Digestive Diseases, The Pfleger Liver Institute, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
| | - Thatcher Thi Huynh
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA
| | - Surachate Siripongsakun
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA.
- Division of Digestive Diseases, The Pfleger Liver Institute, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
- Chulabhorn Hospital, Bangkok, Thailand.
| | - Patrick Weijen Chang
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA
| | - Lori Terese Tong
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA
| | - Yen Phi Ha
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA
| | - Edward Alphonso Mena
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA
| | - Matthew Frank Weissman
- Liver Center, Huntington Medical Research Institutes, 660 South Fair Oaks Avenue, Pasadena, CA, 91105, USA
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Tantai N, Chaikledkaew U, Tanwandee T, Werayingyong P, Teerawattananon Y. A cost-utility analysis of drug treatments in patients with HBeAg-positive chronic hepatitis B in Thailand. BMC Health Serv Res 2014; 14:170. [PMID: 24731689 PMCID: PMC3996169 DOI: 10.1186/1472-6963-14-170] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 04/09/2014] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Only lamivudine has been included for patients with chronic hepatitis B (CHB) in the National List of Essential Drugs (NLED), a pharmaceutical reimbursement list in Thailand. There have also been no economic evaluation studies of CHB drug treatments conducted in Thailand yet. In order to fill this gap in policy research, the objective of this study was to compare the cost-utility of each drug therapy (Figure 1) with palliative care in patients with HBeAg-positive CHB. METHODS A cost-utility analysis using an economic evaluation model was performed to compare each drug treatment for HBeAg-positive CHB patients. A Markov model was used to estimate the relevant costs and health outcomes during a lifetime horizon based on a societal perspective. Direct medical costs, direct non-medical costs, and indirect costs were included, and health outcomes were denoted in life years (LYs) and quality-adjusted life years (QALYs). The results were presented as an incremental cost effectiveness ratio (ICER) in Thai baht (THB) per LY or QALY gained. One-way sensitivity and probabilistic sensitivity analyses were applied to investigate the effects of model parameter uncertainties. RESULTS The ICER values of providing generic lamivudine with the addition of tenofovir when drug resistance occurred, generic lamivudine with the addition of tenofovir based on the road map guideline, and tenofovir monotherapy were -14,000 (USD -467), -8,000 (USD -267) , and -5,000 (USD -167) THB per QALY gained, respectively. However, when taking into account all parameter uncertainties in the model, providing generic lamivudine with the addition of tenofovir when drug resistance occurred (78% and 75%) and tenofovir monotherapy (18% and 24%) would yield higher probabilities of being cost-effective at the societal willingness to pay thresholds of 100,000 (USD 3,333) and 300,000 (USD 10,000) THB per QALY gained in Thailand, respectively. CONCLUSIONS Based on the policy recommendations from this study, the Thai government decided to include tenofovir into the NLED in addition to generic lamivudine which is already on the list. Moreover, the results have shown that the preferred treatment regimen involves using generic lamivudine as the first-line drug with tenofovir added if drug resistance occurs in HBeAg-positive CHB patients.
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Affiliation(s)
- Narisa Tantai
- Department of Pharmacy, Faculty of Medicine, Siriraj Hospital, 2 Prannok Road, Siriraj, Bangkoknoi, Bangkok 10700, Thailand
- Social and Administrative Pharmacy Excellence Research (SAPER) Unit, Department of Pharmacy, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayudthaya Road, Payathai, Ratchathewi, Bangkok 10400, Thailand
- Health Intervention and Technology Assessment Program (HITAP), 6th floor, 6th Building, Department of Health, Ministry of Public Health, Tiwanon Road, Muang, Nonthaburi 11000, Thailand
| | - Usa Chaikledkaew
- Social and Administrative Pharmacy Excellence Research (SAPER) Unit, Department of Pharmacy, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayudthaya Road, Payathai, Ratchathewi, Bangkok 10400, Thailand
- Health Intervention and Technology Assessment Program (HITAP), 6th floor, 6th Building, Department of Health, Ministry of Public Health, Tiwanon Road, Muang, Nonthaburi 11000, Thailand
| | - Tawesak Tanwandee
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Siriraj Hospital, 2 Prannok Road, Siriraj, Bangkoknoi, Bangkok 10700, Thailand
| | - Pitsaphun Werayingyong
- Health Intervention and Technology Assessment Program (HITAP), 6th floor, 6th Building, Department of Health, Ministry of Public Health, Tiwanon Road, Muang, Nonthaburi 11000, Thailand
| | - Yot Teerawattananon
- Health Intervention and Technology Assessment Program (HITAP), 6th floor, 6th Building, Department of Health, Ministry of Public Health, Tiwanon Road, Muang, Nonthaburi 11000, Thailand
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19
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Calvaruso V, Craxì A. Regression of fibrosis after HBV antiviral therapy. Is cirrhosis reversible? Liver Int 2014; 34 Suppl 1:85-90. [PMID: 24373083 DOI: 10.1111/liv.12395] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Long-lasting HBV-DNA suppression is considered to be the best surrogate end-point of antiviral therapy in patients with hepatitis B virus (HBV) related chronic hepatitis or cirrhosis, and it is a prerequisite to prevent liver-related complications and improve survival. Treatment with oral antiviral drugs in patients with HBV cirrhosis is effective in restoring liver function and improving survival even in those with decompensated cirrhosis. These agents are generally well-tolerated for long-term treatment, and several evidences have demonstrated that they are able to reverse liver fibrosis and prevent the occurrence of HCC.
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Affiliation(s)
- Vincenza Calvaruso
- Gastroenterology and Hepatology Unit, University of Palermo, Palermo, Italy
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20
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Srivastava M, Rungta S, Dixit VK, Shukla SK, Singh TB, Jain AK. Predictors of survival in hepatitis B virus related decompensated cirrhosis on tenofovir therapy: an Indian perspective. Antiviral Res 2013; 100:300-5. [PMID: 24012998 DOI: 10.1016/j.antiviral.2013.08.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 08/21/2013] [Accepted: 08/27/2013] [Indexed: 12/12/2022]
Abstract
Decompensated cirrhosis has low survival rate compared to compensated state. Effective viral suppression due to antiviral therapy (tenofovir) has been shown to slow disease progression and may delay the burden of liver transplantation. We aimed to evaluate the usefulness of various prognostic indicators in predicting the 24-months survival in HBV related decompensated cirrhosis after tenofovir therapy and to evaluate the post-treatment outcome. Ninety-six HBV related decompensated patients on antiviral (tenofovir) therapy were prospectively studied for 24months survival and mortality. Cutoff levels for several prognostic indicators were generated by ROC. Prediction of overall probability of mortality was also calculated. The overall probability of survival observed at 12months was 0.947 whereas at 24months it was found to be 0.833. According to Cox proportional hazards model, the univariate analysis revealed cutoff of >7.4logcopies/ml for HBV DNA, >1.2mg/dl for serum creatinine, >3.7mg/dl for total bilirubin, ⩽0.75 for platelets count, >10 for CTP and >20 for MELD as predictors of poor survival. Multivariate analysis showed MELD score of >20 was the most robust predictor of mortality, with 58 times higher risk (HR: 58.73, p<0.001). Post-treatment response with tenofovir for 24months significantly improved the hepatic functions and reverses decompensation and showed incredible efficacy in improvement of hepatic functional status with reduced viremia in a great majority of decompensated cirrhosis subjects having high MELD and HBV DNA level.
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Affiliation(s)
- Manjita Srivastava
- Department of Gastroenterology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, U.P., India
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21
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A Novel Estimation of the Impact of Treatment with Entecavir on Long-Term Mortality, Morbidity, and Health Care Costs of Chronic Hepatitis B in China. Value Health Reg Issues 2013; 2:48-56. [PMID: 29702852 DOI: 10.1016/j.vhri.2013.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Health care decision makers are increasingly concerned about the value of chronic hepatitis B (CHB) treatments in China. This analysis aims at estimating the relative value of entecavir as a first-line option at treatment initiation and for different treatment durations from a holistic perspective. METHODS CHB was simulated by using a Markov disease transition model with disease states based on available natural history data. The model assumed 5-year treatment duration with entecavir, lamivudine, telbivudine, and adefovir based on published clinical data. The speed of disease progression varies by viral load and hepatitis B "e" antigen status. Direct medical costs included medication and management of liver complications. The primary output was the estimated cost savings of entecavir per patient per day versus the comparator. RESULTS For treatment duration of 5 years and a follow-up period of 30 years, entecavir treatment was translated into specific patient benefit of an estimated cost saving of $2.69 per day compared with no treatment. In addition, long-term usage of entecavir resulted in daily $2.33 and $1.73 cost saving compared with short-term usage (1-year and 2-year, respectively). Among available treatment options in China, entecavir treatment exhibited about $0.90 to $1.81 daily cost saving versus the comparators. The detailed daily cost saving of entecavir is summarized as follows-entecavir versus lamivudine: $1.81, entecavir versus telbivudine: $0.90, entecavir versus adefovir: $2.02, and entecavir versus generic adefovir: $1.37. CONCLUSIONS Long-term usage of entecavir exhibits the characteristics of a favorable CHB treatment, which translates into economic value as opposed to either no treatment or alternative strategies.
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22
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Guan R, Lui HF. Treatment of hepatitis B in decompensated liver cirrhosis. Int J Hepatol 2011; 2011:918017. [PMID: 21994876 PMCID: PMC3170850 DOI: 10.4061/2011/918017] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 04/19/2011] [Indexed: 12/12/2022] Open
Abstract
Chronic hepatitis B infection progresses from an asymptomatic persistently infected state to chronic hepatitis, cirrhosis, decompensated liver disease, and/or hepatocellular carcinoma. About 3% of patients with chronic hepatitis develop cirrhosis yearly, and about 5% of individuals with hepatitis B cirrhosis become decompensated annually. The outcome for patients with decompensated cirrhosis is bleak. Lamivudine, the first oral antiviral agent available for hepatitis B treatment is safe and effective and can improve or stabilize liver disease in patients with advanced cirrhosis and viraemia. Viral resistance restricts its prolonged use. Entecavir and tenofovir are newer agents with excellent resistance profile to date. These and some other antiviral agents are being investigated for optimal use in this rather challenging patient group.
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Affiliation(s)
- Richard Guan
- Mount Elizabeth Hospital and Medical Centre, Singapore 228510
| | - Hock Foong Lui
- Gleneagles Hospital and Medical Centre, Singapore 258500
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23
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Eckman MH, Kaiser TE, Sherman KE. The cost-effectiveness of screening for chronic hepatitis B infection in the United States. Clin Infect Dis 2011; 52:1294-306. [PMID: 21540206 PMCID: PMC3097367 DOI: 10.1093/cid/cir199] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 02/02/2011] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Hepatitis B virus (HBV) continues to cause significant morbidity and mortality in the United States. Current guidelines suggest screening populations with a prevalence of ≥2%. Our objective was to determine whether this screening threshold is cost-effective and whether screening lower-prevalence populations might also be cost-effective. METHODS We developed a Markov state transition model to examine screening of asymptomatic outpatients in the United States. The base case was a 35-year-old man living in a region with an HBV infection prevalence of 2%. Interventions (versus no screening) included screening for Hepatitis B surface antigen followed by treatment of appropriate patients with (1) pegylated interferon-α2a for 48 weeks, (2) a low-cost nucleoside or nucleotide agent with a high rate of developing viral resistance for 48 weeks, (3) prolonged treatment with low-cost, high-resistance nucleoside or nucleotide, or (4) prolonged treatment with a high-cost nucleoside or nucleotide with a low rate of developing viral resistance. Effectiveness was measured in quality-adjusted life years (QALYs) and costs in 2008 US dollars. RESULTS Screening followed by treatment with a low-cost, high-resistance nucleoside or nucleotide was cost-effective ($29,230 per QALY). Sensitivity analyses revealed that screening costs <$50,000 per QALY in extremely low-risk populations unless the prevalence of chronic HBV infection is <.3%. CONCLUSIONS The 2% threshold for prevalence of chronic HBV infection in current Centers for Disease Control and Prevention/US Public Health Service screening guidelines is cost-effective. Furthermore, screening of adults in the United States in lower-prevalence populations (eg, as low as .3%) also is likely to be cost-effective, suggesting that current health policy should be reconsidered.
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Affiliation(s)
- Mark H Eckman
- Division of General Internal Medicine and the Center for Clinical Effectiveness, Ohio, USA.
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24
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Shih STF, Crowley S, Sheu JC. Cost-effectiveness analysis of a two-stage screening intervention for hepatocellular carcinoma in Taiwan. J Formos Med Assoc 2010; 109:39-55. [PMID: 20123585 DOI: 10.1016/s0929-6646(10)60020-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND/PURPOSE Hepatocellular carcinoma (HCC) has been the leading cause of cancer death in Taiwan since the 1980s. A two-stage screening intervention was introduced in 1996 and has been implemented in a limited number of hospitals. The present study assessed the costs and health outcomes associated with the introduction of screening intervention, from the perspective of the Taiwanese government. The cost-effectiveness analysis aimed to assist informed decision making by the health authority in Taiwan. METHODS A two-phase economic model, 1-year decision analysis and a 60-year Markov simulation, was developed to conceptualize the screening intervention within current practice, and was compared with opportunistic screening alone. Incremental analyses were conducted to compare the incremental costs and outcomes associated with the introduction of the intervention. Sensitivity analyses were performed to investigate the uncertainties that surrounded the model. RESULTS The Markov model simulation demonstrated an incremental cost-effectiveness ratio (ICER) of NT$498,000 (US$15,600) per life-year saved, with a 5% discount rate. An ICER of NT$402,000 (US$12,600) per quality-adjusted life-year was achieved by applying utility weights. Sensitivity analysis showed that excess mortality reduction of HCC by screening and HCC incidence rates were the most influential factors on the ICERs. Scenario analysis also indicated that expansion of the HCC screening intervention by focusing on regular monitoring of the high-risk individuals could achieve a more favorable result. CONCLUSION Screening the population of high-risk individuals for HCC with the two-stage screening intervention in Taiwan is considered potentially cost-effective compared with opportunistic screening in the target population of an HCC endemic area.
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Affiliation(s)
- Sophy Ting-Fang Shih
- Deakin Health Economics, Public Health Research Policy and Evaluation Cluster, Deakin University, Victoria, Australia.
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Nguyen VTT, Law MG, Dore GJ. Hepatitis B-related hepatocellular carcinoma: epidemiological characteristics and disease burden. J Viral Hepat 2009; 16:453-63. [PMID: 19302335 DOI: 10.1111/j.1365-2893.2009.01117.x] [Citation(s) in RCA: 221] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Worldwide, 350 million people are chronically infected with hepatitis B virus (HBV) who are at greater risk of hepatocellular carcinoma (HCC) compared with uninfected people. The relative risks of HCC among people infected with HBV ranges from 5 to 49 in case-control studies and from 7 to 98 in cohort studies. More than 50% of HCC cases worldwide and 70-80% of HCC cases in highly HBV endemic regions are attributable to HBV. Incidence of HCC (per 100,000 person/year) among people with chronic HBV infection ranges from 400 to 800 in male and from 120 to 180 in female. Factors associated with increased risk of HCC include demographic characteristics (male sex and older age), lifestyles (heavy alcohol consumption and smoking), viral factors (genotype C, D F, high level of HBV DNA, core/precore mutation) and clinical factors (cirrhosis, elevated alpha-fetoprotein (AFP) and alanine aminotransferase (ALT)). HBV-related HCC has extremely poor prognosis with median survival less than 16 months. Survival rates of HBV-related HCC ranged from 36% to 67% after 1 year and from 15% to 26% after 5 year of diagnosis. Older age, liver function impairment, vascular invasion, tumour aggressiveness and elevated AFP are associated with HCC survival. Global burden of HBV-related liver disease is still a major challenge for public health in the 21st century. While decreases in incidence of HBV infection have been observed in birth cohorts following the introduction of universal infant HBV vaccination programme, HBV-related HCC incidence in is projected to increase for at least two decades because of the high prevalence of chronic HBV infection and prolonged latency to HCC development. To reduce HBV-related HCC continued expansion of universal infant HBV vaccination is required along with antiviral therapy targeted to those individuals at highest risk of HCC. Broad public health strategies should include routine testing to identify chronic HBV infection, improved health infrastructures including human resource to provide diagnosis and treatment assessment.
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Affiliation(s)
- V T T Nguyen
- School of Public Health and Community Medicine, The University of New South Wales, Sydney, Australia.
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26
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Tong MJ, Hsien C, Song JJ, Kao JH, Sun HE, Hsu L, Han SH, Durazo FA, Saab S, Blatt LM. Factors associated with progression to hepatocellular carcinoma and to death from liver complications in patients with HBsAg-positive cirrhosis. Dig Dis Sci 2009; 54:1337-46. [PMID: 19242792 DOI: 10.1007/s10620-009-0747-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2008] [Accepted: 01/27/2009] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIMS Hepatitis B viral markers and liver tests were used as predictors for development of hepatocellular carcinoma and progression to end-stage liver disease in 128 cirrhosis patients with hepatitis B. RESULTS During a median follow-up of 63.5 months, 28 patients (21.9%) developed HCC and 36 (28.1%) died from non-HCC liver deaths. By multivariate analysis, independent predictors of HCC development and their hazard ratios were high alfa-fetoprotein (HR2.83, 95% CI 1.60-5.00, P = 0.0003), negative HBeAg (HR2.33, 95% CI 1.04-5.29, P = 0.04), and low alanine aminotransferase value (HR1.42, 95% CI 1.08-1.89, P = 0.02). Independent predictors of non-HCC liver deaths were HBeAg positivity (HR3.39, 95% CI 1.16-9.93, P = 0.02), decrease albumin (HR1.61, 95% CI 0.99-2.63, P = 0.05), decrease platelet count (HR2.54, 95% CI 1.03-6.25, P = 0.04), high ALT value (HR1.22, 95% CI 1.03-1.43, P = 0.02), and onset of encephalopathy (HR3.34, 95% CI 1.21-9.27, P = 0.02). CONCLUSIONS HBeAg negativity, elevated AFP, and low ALT values predicted HCC development, while HBeAg positivity, abnormal liver tests, and low platelet counts identified patients with non-HCC liver deaths.
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Affiliation(s)
- Myron John Tong
- The Pfleger Liver Institute, Division of Digestive Diseases, David Geffen School of Medicine, University of California in Los Angeles, Los Angeles, CA, USA.
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27
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Han Y, Tang Q, Zhu W, Zhang X, You L. Clinical, biochemical, immunological and virological profiles of, and differential diagnosis between, patients with acute hepatitis B and chronic hepatitis B with acute flare. J Gastroenterol Hepatol 2008; 23:1728-33. [PMID: 18823435 DOI: 10.1111/j.1440-1746.2008.05600.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIM In areas with high or intermediate endemicity for chronic hepatitis B virus (HBV) infection, it is difficult to distinguish acute hepatitis B (AHB) from chronic hepatitis B with an acute flare (CHB-AF) in patients whose prior history of HBV infection has been unknown. The present study aimed to screen laboratory parameters other than immunoglobulin M antibody to hepatitis B core antigen (IgM anti-HBc) to discriminate between the two conditions. METHODS A retrospective and prospective study was conducted in patients first presenting clinically as HBV-related acute hepatitis to sort out acute self-limited hepatitis B (ASL-HB). Then, clinical and laboratory profiles were compared between patients with ASL-HB and CHB-AF. Parameters closely associated with ASL-HB were chosen to evaluate sensitivity, specificity, accuracy, positive predictive values and negative predictive values for diagnosing AHB. RESULTS There were significant differences between patients with ASL-HB and CHB-AF in relation to clinical and laboratory aspects, with many outstanding differences in levels of serum HBV-DNA, hepatitis B e antigen (HBeAg) and alpha-fetoprotein (AFP) as well as IgM anti-HBc. In particular, there was a greater difference between the two groups in low levels of HBeAg (ratio of the optical density of the sample to the cut-off value [S/CO] <20) than in negativity for HBeAg (42.7% and 13.5% vs 49.3% and 45.9%). 1:10 000 IgM anti-HBc had a sensitivity and specificity of 96.2% and 93.1%, respectively, for predicting ASL-HB. Combining it with AFP, HBeAg or HBV-DNA could improve diagnostic power. A combination of IgM anti-HBc, HBV-DNA and HBeAg had a predictive value of 98.9% and a negative predictive value of 100.0%, similar to that of a combination of IgM anti-HBc and HBV-DNA. Adding AFP to the combinations of IgM anti-HBc and HBV-DNA or HBeAg could further heighten the positive predictive value. The positive predictive value and negative predictive value of the combination of IgM anti-HBc, HBV-DNA and AFP were both 100.0%. CONCLUSIONS (i) There are significant differences with respect to clinical, biochemical, immunological and virological aspects between ASL-HB and CHB-AF. (ii) Of several diagnostic combinations, IgM anti-HBc jointing HBV-DNA is most effective and most practicable in distinguishing ASL-HB from CHB-AF. (iii) A low HBeAg level is more useful than negative HBeAg in differential diagnosis between ASL-HB and CHB-AF. (iv) In those patients with a high level of IgM anti-HBc, serum AFP level >10x upper reference limit could rule out a probability of ASL-HB.
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Affiliation(s)
- Yongnian Han
- Research Unit of Liver Disease, Shanghai No. 8 People's Hospital, Shanghai, China.
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28
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Fattovich G, Bortolotti F, Donato F. Natural history of chronic hepatitis B: special emphasis on disease progression and prognostic factors. J Hepatol 2008; 48:335-52. [PMID: 18096267 DOI: 10.1016/j.jhep.2007.11.011] [Citation(s) in RCA: 902] [Impact Index Per Article: 56.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The natural history of chronic hepatitis B virus (HBV) infection and disease is complex and highly variable. We review the natural history of chronic hepatitis B with emphasis on the rates of disease progression and factors influencing the course of the liver disease. Chronic hepatitis B is characterized by an early replicative phase (HBeAg positive chronic hepatitis) and a late low or non-replication phase with HBeAg seroconversion and liver disease remission (inactive carrier state). Most patients become inactive carriers after spontaneous HBeAg seroconversion with good prognosis, but progression to HBeAg negative chronic hepatitis due to HBV variants not expressing HBeAg occurs at a rate of 1-3 per 100 person years following HBeAg seroconversion. The incidence of cirrhosis appears to be about 2-fold higher in HBeAg negative compared to HBeAg positive chronic hepatitis. In the cirrhotic patient the 5-year cumulative risk of developing hepatocellular carcinoma is 17% in East Asia and 10% in the Western Europe and the United States and the 5-year liver related death rate is 15% in Europe and 14% in East Asia. There is a growing understanding of viral, host and environmental factors influencing disease progression, which ultimately could improve the management of chronic hepatitis B.
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Affiliation(s)
- Giovanna Fattovich
- Department of Surgical and Gastroenterological Sciences, University of Verona, Piazzale L.A. Scuro, 10, Verona 37134, Italy.
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Alam S, Ahmad N, Mustafa G, Alam K, Khan M. Characteristics of treatment naïve chronic hepatitis B in Bangladesh: younger populations are more affected; HBeAg-negatives are more advanced. Saudi J Gastroenterol 2008; 14:15-9. [PMID: 19568488 PMCID: PMC2702890 DOI: 10.4103/1319-3767.37796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Accepted: 09/29/2007] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND/AIM Bangladesh is a densely populated country with intermediate endemicity for chronic hepatitis B (CHB). The aim of the present study was to evaluate the biochemical, virological and histological character of CHB patients and to examine the relationship between these indices. MATERIALS AND METHODS One thousand and twenty-two patients of CHB fulfilled our inclusion criteria. Inclusion criteria were (1) HBsAg positive for at least 6 months, (2) HBeAg-positive or negative and (3) hepatitis B virus (HBV) DNA positive. Patients with detectable antibodies to human immunodeficiency virus (HIV), hepatitis Delta virus (HDV) or hepatitis C virus (HCV), with previous antiviral treatment, overt cirrhosis and hepatocellular carcinoma, were excluded. Of these, 191 patients were randomly selected for liver biopsy and were evaluated for analysis. RESULTS In the 191 patients, male to female ratio was 4.6:1; age distribution was 26.5 +/- 8.5 (mean +/- standard deviation) years. One hundred and seventy-eight (93.2%) patients were under 40 years. Sixty-eight (35.6%) patients were HBeAg-negative, had less DNA load, and were significantly older, more fibrotic and cirrhotic (P < 0.001). Correlation was not found between DNA level and histological activity. Histological activity was not correlated with ALT level in HBeAg-positive patients (P < 0.001). CONCLUSION CHB affects the younger population in Bangladesh. HBeAg-positive CHB was associated with more fibrosis and cirrhosis. Serum HBV DNA levels do not correlate with the severity of histological lesions in all patients. Evaluation by liver biopsy remains gold standard for taking decision of treatment.
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Affiliation(s)
- Shanhinul Alam
- Department of Hepatology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh.
| | - Nooruddin Ahmad
- Department of Hepatology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - Golam Mustafa
- Department of Hepatology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - Khorshed Alam
- Department of Hepatology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - Mobin Khan
- Department of Hepatology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
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The Jade Ribbon Campaign: A Model Program for Community Outreach and Education to Prevent Liver Cancer in Asian Americans. J Immigr Minor Health 2007; 11:281-90. [DOI: 10.1007/s10903-007-9094-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Accepted: 10/04/2007] [Indexed: 12/12/2022]
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Cadranel JF, Lahmek P, Causse X, Bellaiche G, Bettan L, Fontanges T, Medini A, Henrion J, Chousterman M, Condat B, Hervio P, Periac P, Eugène C, Moindrot H, Grasset D, Nouel O, Pilette C, Szostak-Talbodec N, Cayla JM, Si-Ahmed SN, Dumouchel P, Pariente A, Lesgourgues B, Denis J. Epidemiology of chronic hepatitis B infection in France: risk factors for significant fibrosis--results of a nationwide survey. Aliment Pharmacol Ther 2007; 26:565-76. [PMID: 17661760 DOI: 10.1111/j.1365-2036.2007.03400.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Epidemiological data concerning hepatitis B are scarce in France. AIM To describe epidemiological, clinical, virological and histological features of HBsAg-positive patients followed at non-academic hospitals in France. METHODS Clinical, biological, virological and histological data of all HBsAg-positive consecutive patients observed from April 1, 2001 to May 31, 2002 in participating centres were recorded prospectively. Multivariate analyses of factors associated with significant fibrosis and cirrhosis were performed. RESULTS Nearly 1166 HBsAg-positive patients were seen in the 58 centres: 671 males and 495 females from metropolitan France (32%) and from outside metropolitan France (68%); mean age 41 +/- 15 years. Twenty-nine percent of patients were probable HBsAg inactive carriers, while 50% had chronic hepatitis; 43% of these were HBeAg-positive and 57% HBeAg-negative. Liver biopsy had been performed in 558 (51%) patients; 205 (17.6%) patients had cirrhosis. By multivariate analysis, factors associated with significant fibrosis were: age >40 years (P < 0.05), HBeAg-negative status (P < 0.02) and histological activity (P < 0.0001). Factors associated with cirrhosis: age (P < 0.0001), platelet count <150 000/mm(3) (P < 0.0001) and viral co-infection (P < 0.03). CONCLUSION HBV infection represents a significant workload for hepatogastroenterologists at non-academic hospitals in France.
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Affiliation(s)
- J-F Cadranel
- Hepato-gastroenterology and Diabetology Section, Centre Hospitalier Laennec, 60109 Creil, France.
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Iloeje UH, Yang HI, Jen CL, Su J, Wang LY, You SL, Chen CJ. Risk and predictors of mortality associated with chronic hepatitis B infection. Clin Gastroenterol Hepatol 2007; 5:921-31. [PMID: 17678844 DOI: 10.1016/j.cgh.2007.06.015] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS The study objective was to determine the risk of all-cause and cause-specific mortality as well as to examine the predictors of mortality in chronic hepatitis B infection. METHODS We performed a prospective cohort study of 23,820 persons (age, 30-65 y) recruited between 1991 and 1992 and followed up through 2004 from 7 townships in Taiwan. The main outcomes were all-cause and liver-related mortality rates. Mortality analyses used time-to-events methods, and survival curves were derived by the Kaplan-Meier method. Cox proportional hazard models were used to estimate multivariable-adjusted hazard ratios. RESULTS There were 1814 deaths during a mean follow-up period of 12.5 years (282,323.7 person-years of follow-up evaluation). Persons positive for hepatitis B surface antigen (HBsAg) had significantly (P < .01) higher adjusted hazard ratios for all causes of mortality (1.7; 95% confidence interval [CI], 1.5-1.9), liver cancer mortality (22.4; 95% CI, 15.2-32.9), and chronic liver disease and cirrhosis mortality (5.4; 95% CI, 3.5-8.4). When compared with HBsAg-negative persons, hepatitis B virus (HBV)-infected persons with HBV DNA levels less than 10(4) had a high risk of hepatocellular carcinoma mortality (4.4; 95% CI, 2.4-8.2). In HBsAg-positive persons, the mortality rate increased with cohort entry serum HBV DNA level. Liver cancer mortality ranged from 72.8 per 100,000 person-years for subjects with HBV DNA levels less than 300 copies/mL to 815.6 per 100,000 person-years for those with HBV DNA levels of 1 million copies/mL or greater. Chronic liver disease and cirrhosis deaths ranged from 9.1 to 267.4 per 100,000 person-years. CONCLUSIONS Chronic HBV infection is associated with significant preventable excess mortality risk. This mortality risk is correlated strongly with the level of viral replication among other factors.
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Affiliation(s)
- Uchenna H Iloeje
- Global Epidemiology and Outcomes Research, Pharmaceutical Research Institute, Bristol-Myers Squibb Company Wallington, Connecticut, USA
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Amin J, Law MG, Bartlett M, Kaldor JM, Dore GJ. Causes of death after diagnosis of hepatitis B or hepatitis C infection: a large community-based linkage study. Lancet 2006; 368:938-45. [PMID: 16962883 DOI: 10.1016/s0140-6736(06)69374-4] [Citation(s) in RCA: 196] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Hepatitis B and hepatitis C virus infections are common causes of death related to liver disease. In this large study, we aimed to investigate all cause mortality of the viruses in a community-based setting. METHODS In the study population, 39,109 people had hepatitis B, 75,834 had hepatitis C, and 2604 had hepatitis B and hepatitis C co-infection, notified to the New South Wales state health department, Australia, between 1990 and 2002. Their data were probabilistically linked to the National Death Index. Standardised mortality ratios for all causes of death were calculated and adjusted for age, sex, and calendar year. RESULTS The number of deaths identified by the linkage were 1233 (3.2%) for hepatitis B, 4008 (5.3)% for hepatitis C, and 186 (7.1)% for hepatitis B and C co-infection. Raised risk of liver-related death (standardised mortality ratios 12.2, 95% CI 10.7-13.9; 16.8, 15.4-18.3, and 32.9, 23.1-46.7, for hepatitis B, hepatitis C, and hepatitis B and C co-infected patients, respectively) and drug-induced death (1.4, 1.0-2.0; 19.3, 18.1-20.5; and 24.7, 18.2-33.5, respectively) were detected. In people with hepatitis C, raised risk of dying from drug-related causes was significantly greater than from liver-related causes (p=0.012), with the greatest excess risk in women aged 15-24 years (56.9, 39.2-79.9). INTERPRETATION All groups had increased risk of liver-related death compared with the standard population, with the greatest excess in people diagnosed with hepatitis B and hepatitis C co-infection. Our data highlight that young people with hepatitis C and with co-infection face a higher mortality risk from continued drug use than from their infection, whereas the main cause of hepatitis B death was liver related.
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Affiliation(s)
- Janaki Amin
- National Centre in HIV Epidemiology and Clinical Research, University of New South Wales, NSW 2010, Australia.
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Zarski JP, Marcellin P, Leroy V, Trepo C, Samuel D, Ganne-Carrie N, Barange K, Canva V, Doffoel M, Cales P. Characteristics of patients with chronic hepatitis B in France: predominant frequency of HBe antigen negative cases. J Hepatol 2006; 45:355-60. [PMID: 16750585 DOI: 10.1016/j.jhep.2006.03.007] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2005] [Revised: 02/23/2006] [Accepted: 03/06/2006] [Indexed: 12/17/2022]
Abstract
BACKGROUND/AIMS An increasing prevalence of HBe antigen (HBeAg) negative chronic hepatitis B has been recently reported in many countries. The aim of this study was to analyze the frequency and the characteristics of HBeAg-negative as compared with HBeAg-positive chronic hepatitis B in France. METHODS Eight hundred and sixty-five patients with histologically proven chronic hepatitis B seen in 26 University centers were included. The proportion with HBeAg-negative chronic hepatitis B was 72% and higher in patients born in Africa, Middle East, Eastern, and Southern Europe than in those of French or Asian origin. HBeAg-negative patients were significantly older (p<0.001) and had lower ALT levels and HBV DNA serum levels (p<0.01) than HBeAg-positive patients. An unknown source of infection was more prevalent in HBeAg-negative patients (p<0.05). Fibrosis score (p<0.05) and proportion of cirrhosis (p<0.01) were significantly higher in HBeAg-negative patients. Age older than 50 years, male gender and viral load lower than 5 logs10 copies/mL were independently associated with cirrhosis. RESULTS HBeAg-negative chronic hepatitis B is predominant in France. This observation is important for an optimized clinical management and future therapeutic trials in chronic hepatitis B.
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Affiliation(s)
- Jean-Pierre Zarski
- Département d'Hépato-gastroentérologie, CHU de Grenoble-BP 217-38043 Grenoble CEDEX 9, France.
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Kanwal F, Farid M, Martin P, Chen G, Gralnek IM, Dulai GS, Spiegel BMR. Treatment alternatives for hepatitis B cirrhosis: a cost-effectiveness analysis. Am J Gastroenterol 2006; 101:2076-89. [PMID: 16968510 DOI: 10.1111/j.1572-0241.2006.00769.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Hepatitis B virus (HBV) patients with cirrhosis are at risk for developing costly, morbid, or mortal events, and therefore need highly effective therapies. Lamivudine is effective but is limited by viral resistance. In contrast, adefovir and entecavir have lower viral resistance, but are more expensive. The most cost-effective approach is uncertain. METHODS We evaluated the cost-effectiveness of six strategies in HBV cirrhosis: (1) No HBV treatment ("do nothing"), (2) lamivudine monotherapy, (3) adefovir monotherapy, (4) lamivudine with crossover to adefovir on resistance ("adefovir salvage"), (5) entecavir monotherapy, or (6) lamivudine with crossover to entecavir on resistance ("entecavir salvage"). The primary outcome was the incremental cost per quality-adjusted life-year (QALY) gained. RESULTS The "do nothing" strategy was least effective yet least expensive. Compared with "do nothing," using adefovir cost an incremental US dollars 19,731. Entecavir was more effective yet more expensive than adefovir, and cost an incremental US dollars 25,626 per QALY gained versus adefovir. Selecting between entecavir versus adefovir was highly dependent on the third-party payer's "willingess-to-pay" (e.g., 45% and 60% of patients fall within budget if willing-to-pay US dollars 10K and US dollars 50K per QALY gained for entecavir, respectively). Both lamivudine monotherapy and the "salvage" strategies were not cost-effective. However, between the two salvage strategies, "adefovir salvage" was more effective and less expensive than "entecavir salvage." CONCLUSION Both entecavir and adefovir are cost-effective in patients with HBV cirrhosis. Choosing between adefovir and entecavir is highly dependent on available budgets. In patients with HBV cirrhosis with previous lamivudine resistance, "adefovir salvage" appears more effective and less expensive than "entecavir salvage."
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Affiliation(s)
- Fasiha Kanwal
- Division of Gastroenterology, VA Greater Los Angeles Healthcare System, Los Angeles, California 90073, USA
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Lin X, Robinson NJ, Thursz M, Rosenberg DM, Weild A, Pimenta JM, Hall AJ. Chronic hepatitis B virus infection in the Asia-Pacific region and Africa: review of disease progression. J Gastroenterol Hepatol 2005; 20:833-43. [PMID: 15946129 DOI: 10.1111/j.1440-1746.2005.03813.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Countries in the the Asia-Pacific region and Africa tend to have the highest prevalence of hepatitis B infection worldwide. Hepatitis B infection progresses from an asymptomatic persistently infected status to chronic hepatitis B, cirrhosis, decompensated liver disease and/or hepatocellular carcinoma. The aim of this review was to summarize rates and risk factors for progression between disease states in the Asia-Pacific region and Africa. A literature search was conducted employing MEDLINE and EMBASE (1975-2003) using the following key words: hepatitis B, natural history, disease progression, cirrhosis, hepatocellular carcinoma, mortality, Africa and the Asia-Pacific region. Bibliographies of articles reviewed were also searched. Ranges for annual progression rates were: (i) asymptomatic persistent infection to chronic hepatitis B, 0.84-2.7%; (ii) chronic hepatitis B to cirrhosis, 1.0-2.4%; and (iii) cirrhosis to hepatocellular carcinoma, 3.0-6.6%. Patients with asymptomatic persistent infection and chronic hepatitis B had relatively low 5-year mortality rates (<4%); rates (>50%) were much higher in patients with decompensated liver disease and hepatocellular carcinoma. No data were found for progression rates in African populations. Hepatitis B e antigen was a risk factor for chronic hepatitis B, and bridging hepatic necrosis in chronic hepatitis B increased the risk of cirrhosis. Risk factors for hepatocellular carcinoma included cirrhosis, co-infection with hepatitis C virus, and genetic and environmental factors. In this review, wide ranges of disease progression estimates are documented, emphasizing the need for further studies, particularly in Africa, where progression rates are largely not available. Summarizing information on factors associated with disease progression should assist in focusing efforts to arrest the disease process in those at most risk.
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Affiliation(s)
- Ximin Lin
- Department of Epidemiology, School of Public Health, Fudan University Medical Center, Shanghai, China
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