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Asahina Y, Liu CJ, Gane E, Itoh Y, Kawada N, Ueno Y, Youn J, Wang CY, Llewellyn J, Matsuda T, Gaggar A, Mo H, Dvory-Sobol H, Crans G, Chuang WL, Chen PJ, Enomoto N. Twelve weeks of ledipasvir/sofosbuvir all-oral regimen for patients with chronic hepatitis C genotype 2 infection: Integrated analysis of three clinical trials. Hepatol Res 2020; 50:1109-1117. [PMID: 32614468 DOI: 10.1111/hepr.13546] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/29/2020] [Accepted: 06/19/2020] [Indexed: 02/06/2023]
Abstract
AIM The combination of ledipasvir and sofosbuvir (LDV/SOF) has been approved for the treatment of various hepatitis C virus (HCV) genotypes across many countries. This article presents an integrated analysis of three prospective phase II/III trials in the Asia-Pacific region to evaluate the efficacy and safety of 12 weeks of LDV/SOF in HCV genotype 2 patients without cirrhosis or with compensated cirrhosis. METHODS A total of 200 patients were included in the integrated analysis. The primary end-point was the rate of sustained virologic response for 12 weeks after the end of therapy (SVR12), analyzed by fibrosis stage, treatment history, HCV genotype subtype, and presence of baseline resistance-associated substitutions (RAS). Safety was evaluated by adverse events and laboratory abnormalities. RESULTS Twelve weeks of treatment with LDV/SOF was associated with high SVR12 rates (overall 98%) in patients with genotype 2 HCV, irrespective of fibrosis stage, treatment history, genotype 2 subtype, and presence of baseline non-structural protein 5A resistance-associated substitution (NS5A RAS), and LDV/SOF was well tolerated. CONCLUSIONS Twelve weeks of treatment with LDV/SOF provides a highly effective and safe treatment for patients with genotype 2 HCV, including those with advanced fibrosis. As a ribavirin-free and protease inhibitor-free regimen with minimal on-treatment monitoring requirements, LDV/SOF can potentially play a crucial role in achieving the WHO's goal of HCV elimination.
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Affiliation(s)
- Yasuhiro Asahina
- Department of Gastroenterology and Hepatology, Department of Liver Disease Control, Tokyo Medical and Dental University, Tokyo, Japan
| | - Chun-Jen Liu
- Department of Internal Medicine and Hepatitis Research Center, National Taiwan University College of Medicine and Hospital, Taipei City, Taiwan
| | - Edward Gane
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Yoshito Itoh
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Norifumi Kawada
- Department of Hepatology, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Yoshiyuki Ueno
- Department of Gastroenterology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Jin Youn
- Gilead Sciences, Foster City, California, USA
| | | | | | | | - Anuj Gaggar
- Gilead Sciences, Foster City, California, USA
| | - Hongmei Mo
- Gilead Sciences, Foster City, California, USA
| | | | | | - Wan-Long Chuang
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung City, Taiwan
| | - Pei-Jer Chen
- Department of Internal Medicine and Hepatitis Research Center, National Taiwan University College of Medicine and Hospital, Taipei City, Taiwan
| | - Nobuyuki Enomoto
- First Department of Internal Medicine, Gastroenterology and Hepatology, University of Yamanashi, Yamanashi, Japan
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The change in the nationwide seroprevalence of hepatitis C virus and the status of linkage to care in South Korea from 2009 to 2015. Hepatol Int 2019; 13:599-608. [PMID: 31432446 DOI: 10.1007/s12072-019-09975-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 07/29/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Hepatitis C virus (HCV) requires epidemiological monitoring to estimate its disease burden and to develop countermeasures. This study aimed to investigate the difference between the 2015 and 2009 nationwide anti-HCV seroprevalence and to determine linkage to care estimates in South Korea. METHODS A total 268,422 examinees ≥ 20 years old were included in 2015 from 33 medical institutions nationwide. Electronically extracted data were retrospectively analyzed to calculate the age-, sex-, and area-adjusted anti-HCV prevalence. Seroprevalence in 2015 was measured using the same method as that in 2009. For anti-HCV-positive subjects, medical records were reviewed to see whether HCV RNA testing or antiviral treatment was performed. RESULTS Adjusted anti-HCV prevalence was 0.60% (95% confidence interval, 0.57-0.63) based on general Korean population in 2015. It showed an increasing trend according to age; 0.23% in thirties, 0.38% in forties, 0.63% in fifties, 1.08% in sixties, and 1.65% in those aged ≥ 70 years. From 2009 to 2015, the adjusted anti-HCV prevalence decreased by 30%, with odds ratio of 0.70 (95% CI 0.70-0.71). There was significant intranational regional variation and changing pattern of seroprevalence. Among 1359 anti-HCV-positive subjects, HCV RNA test was performed in 60% and 25.4% had positivity. Treatment-initiated and cured rates in 2015 were 18.5% and 10.9%, respectively. CONCLUSIONS Anti-HCV prevalence in South Korea was 0.6% in 2015, showing a 30% decrease from that in 2009. Although the HCV RNA testing rate was increased since 2009, this remains suboptimal. Moreover, the treatment uptake rate should be improved in South Korea.
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Al Bayyat G, Arreaza-Kaufman D, Venkateswaran N, Galor A, Karp CL. Update on pharmacotherapy for ocular surface squamous neoplasia. EYE AND VISION 2019; 6:24. [PMID: 31417938 PMCID: PMC6689886 DOI: 10.1186/s40662-019-0150-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/21/2019] [Indexed: 12/31/2022]
Abstract
The most frequently encountered non-pigmented tumor of the ocular surface is ocular surface squamous neoplasia (OSSN). Over the past two decades, the pharmacological management of OSSN has grown, with topical 5-fluorouracil, mitomycin, and interferon alpha 2b all being successfully used to treat this disease. Other agents, such as anti-vascular endothelial growth factor (VEGF), retinoic acid, cidofovir and Aloe vera, have less frequently been used in the treatment of OSSN. This review will discuss these pharmacologic agents, summarizing available data and presenting the approach to the treatment of these tumors.
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Affiliation(s)
- Ghada Al Bayyat
- 1Bascom Palmer Eye Institute, University of Miami, 900 NW 17th Street, Miami, FL 33136 USA
| | - Dan Arreaza-Kaufman
- 1Bascom Palmer Eye Institute, University of Miami, 900 NW 17th Street, Miami, FL 33136 USA
| | - Nandini Venkateswaran
- 1Bascom Palmer Eye Institute, University of Miami, 900 NW 17th Street, Miami, FL 33136 USA
| | - Anat Galor
- 1Bascom Palmer Eye Institute, University of Miami, 900 NW 17th Street, Miami, FL 33136 USA.,Miami Veterans Hospital, Miami, FL 33125 USA
| | - Carol L Karp
- 1Bascom Palmer Eye Institute, University of Miami, 900 NW 17th Street, Miami, FL 33136 USA
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Chung W, Kim KA, Jang ES, Ki M, Choi HY, Jeong SH. Cost-effectiveness of sofosbuvir plus ribavirin therapy for hepatitis C virus genotype 2 infection in South Korea. J Gastroenterol Hepatol 2019; 34:776-783. [PMID: 30462841 DOI: 10.1111/jgh.14554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 11/12/2018] [Accepted: 11/14/2018] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM For genotype 2 chronic hepatitis C (CHC), the efficacy and safety of sofosbuvir plus ribavirin therapy (SOF + RBV) was better than pegylated interferon plus ribavirin therapy (PR) at a greater drug cost. This study investigated the cost-effectiveness of SOF + RBV compared with PR for treatment-naïve genotype 2 CHC in South Korea. METHODS Using a decision analytic Markov model, a cost-effectiveness analysis comparing SOF + RBV with PR or no treatment for treatment-naïve genotype 2 CHC was performed with probabilistic and deterministic sensitivity analyses from the payer's perspective in 2017. Three cohorts of patients aged 40-49, 50-59, and 60-69 years were simulated to progress through the fibrosis stages F0-F4 to end-stage liver disease, hepatocellular carcinoma, or death. Published and calculated data on the clinical efficacy of the regimen, health-related quality of life, costs, and transition probabilities were used. RESULTS While the incremental cost-effectiveness ratio for PR was dominant over no treatment, the incremental cost-effectiveness ratios for SOF + RBV were $20 058 for the patients in their 40s, $19 662 for those in their 50s, and $22 278 for those in their 60s compared with PR. Probabilistic sensitivity analysis indicated an 89.0% probability for the SOF + RBV to be cost-effective at a willingness to pay of $29 754.4 (per-capita gross domestic product in 2017) for the patients in their 40s and 94.1% and 89.1% for the patients in their 50s and 60s, respectively. CONCLUSIONS The SOF + RBV is a cost-effective option for genotype 2 treatment-naïve CHC patients, especially for the patients with liver cirrhosis in Korea.
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Affiliation(s)
- Wankyo Chung
- Department of Public Health Science and Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Kyung-Ah Kim
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Gyeonggi, Korea
| | - Eun Sun Jang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggi, Korea
| | - Moran Ki
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Gyeonggi, Korea
| | - Hwa Young Choi
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Gyeonggi, Korea
| | - Sook-Hyang Jeong
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggi, Korea
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Kim KA, Chung W, Choi HY, Ki M, Jang ES, Jeong SH. Cost-effectiveness and health-related outcomes of screening for hepatitis C in Korean population. Liver Int 2019; 39:60-69. [PMID: 29998565 DOI: 10.1111/liv.13930] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 06/12/2018] [Accepted: 06/25/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND/AIM In the era of direct-acting antivirals (DAA), active screening for hidden hepatitis C virus (HCV) infection is important for HCV elimination. This study estimated the cost-effectiveness and health-related outcomes of HCV screening and DAA treatment of a targeted population in Korea, where anti-HCV prevalence was 0.6% in 2015. METHODS A Markov model simulating the natural history of HCV infection was used to examine the cost-effectiveness of two strategies: no screening vs screening and DAA treatment. Screening was performed by integration of the anti-HCV test into the National Health Examination Program. From a healthcare system's perspective, the cost-utility and the impact on HCV-related health events of one-time anti-HCV screening and DAA treatment in Korean population aged 40-65 years was analysed with a lifetime horizon. RESULTS The HCV screening and DAA treatment strategy increased quality-adjusted life years (QALY) by 0.0015 at a cost of $11.27 resulting in an incremental cost-effectiveness ratio (ICER) of $7435 per QALY gained compared with no screening. The probability of the screening strategy to be cost-effective was 98.8% at a willingness-to-pay of $27 205. Deterministic sensitivity analyses revealed the ICERs were from $4602 to $12 588 and sensitive to screening costs, discount rates and treatment acceptability. Moreover, it can prevent 32 HCV-related deaths, 19 hepatocellular carcinomas and 15 decompensated cirrhosis per 100 000 screened persons. CONCLUSIONS A one-time HCV screening and DAA treatment of a Korean population aged 40-65 years would be highly cost-effective, and significantly reduce the HCV-related morbidity and mortality compared with no screening.
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Affiliation(s)
- Kyung-Ah Kim
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Wankyo Chung
- Department of Public Health Science, Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Hwa Young Choi
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Moran Ki
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Eun Sun Jang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Sook-Hyang Jeong
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
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C Pak S, Alastal Y, Khan Z, Darr U. Viral Hepatitis in South Korea. Euroasian J Hepatogastroenterol 2017; 7:163-165. [PMID: 29201801 PMCID: PMC5670262 DOI: 10.5005/jp-journals-10018-1240] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 07/19/2017] [Indexed: 12/27/2022] Open
Abstract
In South Korea (S. Korea), viral hepatitis is a major public health burden. Advances in healthcare policy, evidence-based medicine, and therapeutic strategies in S. Korea have brought a rapid change in the sociodemographic and clinical characteristics of viral hepatitis. This review discusses the innovative approaches that S. Korea has taken to curb the epidemic of viral hepatitis. In addition, the efficacy of various preventive and therapeutic modalities is discussed. This review aims to provide a brief overview to guide future research direction and healthcare policy changes. How to cite this article: Pak SC, Alastal Y, Khan Z, Darr U. Viral Hepatitis in South Korea. Euroasian J Hepato-Gastroenterol 2017;7(2):163-165.
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Affiliation(s)
- Stella C Pak
- Department of Medicine, University of Toledo Medical Center, Toledo, Ohio, USA
| | - Yaseen Alastal
- Department of Medicine, University of Toledo Medical Center, Toledo, Ohio, USA
| | - Zubair Khan
- Department of Medicine, University of Toledo Medical Center, Toledo, Ohio, USA
| | - Umar Darr
- Department of Medicine, University of Toledo Medical Center, Toledo, Ohio, USA
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Jeong SH, Jang ES, Choi HY, Kim KA, Chung W, Ki M. Current status of hepatitis C virus infection and countermeasures in South Korea. Epidemiol Health 2017; 39:e2017017. [PMID: 28774165 PMCID: PMC5543292 DOI: 10.4178/epih.e2017017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Accepted: 04/13/2017] [Indexed: 01/19/2023] Open
Abstract
Hepatitis C virus (HCV) infection is a major cause of liver cirrhosis, hepatocellular carcinoma, and liver-related mortality. The new antiviral drugs against HCV, direct acting antivirals, result in >90% cure rate. This review aimed to summarize the current prevalence, clinical characteristics, outcomes, and treatment response associated with HCV infection, and countermeasures for optimal HCV control in South Korea. Based on a literature review, the current anti-HCV prevalence in the Korean population is 0.6 to 0.8%, with increasing prevalence according to age. The major HCV genotypes in Korean patients were genotype 1b and genotype 2. Successful antiviral treatment leads to significantly reduced liver related complications and mortality. However, only about one third of the individuals with HCV infection seem to be managed under the current national health insurance system, suggesting a remarkable rate of underdiagnoses and subsequent loss of opportunity to cure. A recent study in South Korea showed that targeted population screening for HCV infection is cost-effective. To prevent recently developed clusters of HCV infection in some clinics, mandatory surveillance rather than sentinel surveillance for HCV infection is required and governmental countermeasures to prevent reuse of syringes or other medical devises, and public education should be maintained. Moreover, one-time screening for a targeted population should be considered and a cost-effectiveness study supporting an optimal screening strategy is warranted.
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Affiliation(s)
- Sook-Hyang Jeong
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Eun Sun Jang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Hwa Young Choi
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Kyung-Ah Kim
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Wankyo Chung
- Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Moran Ki
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
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