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Kamal S, Shahzad A, Rehman K, Tariq K, Akash MSH, Imran M, Assiri MA. Therapeutic Intervention of Serine Protease Inhibitors against Hepatitis C Virus. Curr Med Chem 2024; 31:2052-2072. [PMID: 37855348 DOI: 10.2174/0109298673234823230921090431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 05/12/2023] [Accepted: 05/23/2023] [Indexed: 10/20/2023]
Abstract
Hepatitis C virus (HCV) is a globally prevalent and hazardous disorder that is responsible for inducing several persistent and potentially fatal liver diseases. Current treatment strategies offer limited efficacy, often accompanied by severe and debilitating adverse effects. Consequently, there is an urgent and compelling need to develop novel therapeutic interventions that can provide maximum efficacy in combating HCV while minimizing the burden of adverse effects on patients. One promising target against HCV is the NS3-4A serine protease, a complex composed of two HCV-encoded proteins. This non-covalent heterodimer is crucial in the viral life cycle and has become a primary focus for therapeutic interventions. Although peginterferon, combined with ribavirin, is commonly employed for HCV treatment, its efficacy is hampered by significant adverse effects that can profoundly impact patients' quality of life. In recent years, the development of direct-acting antiviral agents (DAAs) has emerged as a breakthrough in HCV therapy. These agents exhibit remarkable potency against the virus and have demonstrated fewer adverse effects when combined with other DAAs. However, it is important to note that there is a potential for developing resistance to DAAs due to alterations in the amino acid position of the NS3-4A protease. This emphasizes the need for ongoing research to identify strategies that can minimize the emergence of resistance and ensure long-term effectiveness. While the combination of DAAs holds promise for HCV treatment, it is crucial to consider the possibility of drug-drug interactions. These interactions may occur when different DAAs are used concurrently, potentially compromising their therapeutic efficacy. Therefore, carefully evaluating and monitoring potential drug interactions are vital to optimize treatment outcomes. In the pursuit of novel therapeutic interventions for HCV, the field of computational biology and bioinformatics has emerged as a valuable tool. These advanced technologies and methodologies enable the development and design of new drugs and therapeutic agents that exhibit maximum efficacy, reduced risk of resistance, and minimal adverse effects. By leveraging computational approaches, researchers can efficiently screen and optimize potential candidates, accelerating the discovery and development of highly effective treatments for HCV, treatments.
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Affiliation(s)
- Shagufta Kamal
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Asif Shahzad
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Kanwal Rehman
- Department of Pharmacy, The Women University, Multan, Pakistan
| | - Komal Tariq
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | | | - Muhammad Imran
- Research center for Advanced Materials Science (RCAMS), King Khalid University, Abha, Saudi Arabia
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Mohammed Ali Assiri
- Research center for Advanced Materials Science (RCAMS), King Khalid University, Abha, Saudi Arabia
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, Saudi Arabia
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2
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The European Prevalence of Resistance Associated Substitutions among Direct Acting Antiviral Failures. Viruses 2021; 14:v14010016. [PMID: 35062220 PMCID: PMC8781716 DOI: 10.3390/v14010016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Approximately 71 million people are still in need of direct-acting antiviral agents (DAAs). To achieve the World Health Organization Hepatitis C elimination goals, insight into the prevalence and influence of resistance associated substitutions (RAS) is of importance. Collaboration is key since DAA failure is rare and real-life data are scattered. We have established a European collaboration, HepCare, to perform in-depth analysis regarding RAS prevalence, patterns, and multiclass occurrence. Methods: Data were extracted from the HepCare cohort of patients who previously failed DAA therapy. Geno—and subtypes were provided by submitters and mostly based on in-house assays. They were reassessed using the Comet HCV subtyping tool. We considered RAS to be relevant if they were associated with DAA failure in vivo previously reported in literature. Results: We analyzed 938 patients who failed DAA therapy from ten different European countries. There were 239 genotypes (GT) 1a, 380 GT1b, 19 GT2c, 205 GT3a, 14 GT4a, and 68 GT4d infections. Several unusual subtypes (n = 15) (GT1b/g/l, GT3b, GT4k/n/r/t) were present. RAS appeared in over 80% of failures and over a quarter had three or more RAS. Multiclass RAS varied over target region and genotype between 0–48%. RAS patterns such as the Q30R + L31M and Q30R + Y93H in GT1a, the L31V + Y93H and L31V + Y93H for GT1b, and A30K + L31M and A30K/V + Y93H for GT3a all occurred with a prevalence below 5%. Conclusion: RAS occur frequently after DAA failures and follow a specific genotype and drug related pattern. Interpretation of the influence of RAS on retreatment is challenging due to various patterns, patients’ characteristics, and previous treatment history. Moving towards HCV elimination, an ongoing resistance surveillance is essential to track the presence of RAS, RAS patterns and gather data for a re-treatment algorithm.
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Stanciu C, Muzica CM, Girleanu I, Cojocariu C, Sfarti C, Singeap AM, Huiban L, Chiriac S, Cuciureanu T, Trifan A. An update on direct antiviral agents for the treatment of hepatitis C. Expert Opin Pharmacother 2021; 22:1729-1741. [PMID: 33896315 DOI: 10.1080/14656566.2021.1921737] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: The development of direct-acting antiviral (DAA) agents for the treatment of hepatitis C virus (HCV) infection has completely transformed the management of this disease. The advantages of using DAA therapies include high efficacy (sustained virological response (SVR) rate >95%) with minimal side effects, good tolerability, easy drug administration (once daily oral dosing), and short duration of treatment (8-12 weeks). This transformative nature of DAA therapy underpins the goal of the World Health Organization to eliminate HCV infection as a public health threat by 2030.Areas covered: This review seeks to address the current status of DAA therapies, including recent developments, current limitations, and future challenges.Expert opinion: The current DAA regimens, with their high effectiveness and safety profiles, have changed patient perception of HCV infection from a disease that requires complex evaluation and long-term monitoring to a disease that can be cured after one visit to the general practitioner. Despite the remarkably high success rate of DAAs, few patients (4-5%) fail to obtain SVR even after treatment. Five years ahead, the landscape of HCV treatment will undoubtedly continue to evolve, and more pan-genotypic treatment options will be available to all patients.
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Affiliation(s)
- Carol Stanciu
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Cristina Maria Muzica
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Irina Girleanu
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Camelia Cojocariu
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Catalin Sfarti
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Ana-Maria Singeap
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Laura Huiban
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Stefan Chiriac
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Tudor Cuciureanu
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
| | - Anca Trifan
- Department of Gastroenterology, Grigore T. Popa University of Medicine and Pharmacy, ST. SpiridonEmergency Hospital, Iasi, Romania
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Lopez Luis BA, Angulo-Medina L, Rodriguez-Diaz R, Soto-Ramírez LE. Baseline Hepatitis C Virus NS5A Resistance-Associated Polymorphisms in Patients With and Without Human Immunodeficiency Virus Coinfection in Mexico. Microb Drug Resist 2021; 27:1195-1202. [PMID: 33794105 DOI: 10.1089/mdr.2020.0436] [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] [Indexed: 12/29/2022] Open
Abstract
Objective: We aimed to evaluate the frequency and associated factors of baseline NS5A resistance-associated substitutions (RASs) in patients coinfected with human immunodeficiency virus (HIV) and hepatitis C virus (HCV) monoinfection with genotype 1b (GT1b) or genotype 1a (GT1a). Moreover, we performed a phylogenetic analysis to evaluate the pattern of clustering among samples of patients with RASs. Results: Fifty-five patients were infected with GT1a, of whom 44 (80%) were HIV-infected patients. RAS prevalence in GT1a was 14% (6/44) and distributed as follows: 5 (11%) harbored M28V and 1 (2%) A92T. Twenty-four patients were infected with HCV GT1b, of whom only 5 (21%) were HIV coinfected; RASs were found in 17/24 (71%) patients, as follows: Y93H+F37L+Q54H (1/24), Y93H+F37L (1/24), P58S (1/24), L31F+F37L (1/24), F37L+H/Q54H (3/24), and F37L (10/24). Only GT1b was significantly associated with RASs (adjusted odds ratio 16.37; 95% confidence interval 2.74-97.48; p = 0.002) in the multivariate analysis. A cluster of sequences from HIV/HCV GT1a patients was found; however, we did not find phylogenetic relationships among sequences with NS5A RASs. Conclusions: In our population of HCV-infected patients, the frequency of NS5A RASs at baseline was somewhat similar to the previously reported worldwide rate. HCV GT1b showed the most significant association with harboring of NS5A RASs. Of note, despite there being clusters among sequences of HIV-coinfected patients, NS5A RASs were not transmitted.
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Affiliation(s)
- Bruno Ali Lopez Luis
- Laboratory of Molecular Virology, Department of Infectious Diseases, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Luis Angulo-Medina
- Laboratory of Molecular Virology, Department of Infectious Diseases, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Roberto Rodriguez-Diaz
- Laboratory of Molecular Virology, Department of Infectious Diseases, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Luis Enrique Soto-Ramírez
- Laboratory of Molecular Virology, Department of Infectious Diseases, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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Lee DH, Ryu SH, Myung HJ, Shin YJ, Lee SH, Park TY, Moon JS. Retreatment of Chronic Hepatitis C Failed to Daclatasvir Plus Asunaprevir by Other Direct-acting Antivirals. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2021; 77:88-91. [PMID: 33633000 DOI: 10.4166/kjg.2020.145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/22/2020] [Accepted: 12/22/2020] [Indexed: 12/12/2022]
Abstract
The pegylated interferon plus ribavirin combination therapy has been used as the primary treatment for chronic hepatitis C (CHC) but fails to produce a sustained viral response (SVR) in many patients. In recent years, the treatment of CHC has been rapidly changing because of the introduction of direct-acting antivirals (DAAs), which have a high cure rate. However, retreatment of patients after failure of the first DAA therapy is difficult. We report two rare cases of CHC that showed acquired SVR with other DAA combinations after failure to daclatasvir and asunaprevir.
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Affiliation(s)
- Dong Hoon Lee
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Soo Hyung Ryu
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Hee Jun Myung
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Yun Jae Shin
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Si Hyeong Lee
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Tae Young Park
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Jeong Seop Moon
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
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Itakura J, Kurosaki M, Kakizaki S, Amano K, Nakayama N, Inoue J, Endo T, Marusawa H, Hasebe C, Joko K, Wada S, Akahane T, Koushima Y, Ogawa C, Kanto T, Mizokami M, Izumi N. Features of resistance-associated substitutions after failure of multiple direct-acting antiviral regimens for hepatitis C. JHEP Rep 2020; 2:100138. [PMID: 32817930 PMCID: PMC7424232 DOI: 10.1016/j.jhepr.2020.100138] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 05/29/2020] [Accepted: 06/05/2020] [Indexed: 02/06/2023] Open
Abstract
Background & Aims We aimed to clarify the features of resistance-associated substitutions (RASs) after failure of multiple interferon (IFN)-free regimens in HCV genotype 1b infections. Methods A total of 1,193 patients with HCV for whom direct-acting antiviral (DAA) treatment had failed were enrolled from 67 institutions in Japan. The RASs in non-structural protein (NS)3, NS5A, and NS5B were determined by population sequencing. Results Failure of 1, 2, and 3 regimens was observed in 1,101; 80; and 12 patients, respectively. Among patients with failure of 1 regimen, Y56H and D168V in NS3 were more frequently detected after failure of paritaprevir, whereas D168E was more frequently detected after failure of regimens including asunaprevir. R30H and L31-RAS in NS5A were frequently detected after failure of regimens including daclatasvir. The prevalence of Y93-RAS was high irrespective of the regimen. S282T RAS in NS5B was detected in 3.9% of ledipasvir/sofosbuvir failures. The prevalence of D168-RAS increased significantly according to the number of failed regimens (p <0.01), which was similar to that seen with L31-RAS and Y93-RAS. The prevalence of patients with RASs in either NS3 or NS5A, or in both, increased significantly with increasing numbers of failed regimens. The P32del, which is unique to patients for whom DAA had failed, was linked to the absence of Y93H, the presence of L31F, and previous exposure to IFN plus protease inhibitor regimens. Conclusions Failure of multiple DAA regimens can lead to the generation of multiple RASs in the NS3 and NS5A regions of the HCV 1b genome. These mutations contribute to viral resistance to multiple treatment regimens and, therefore, should be considered during decision making for treatment of chronic HCV. Lay summary Resistance-associated substitutions (RAS) in the genome of the hepatitis C virus are 1 of the major causes for failed treatment. We investigated RASs after failure of various treatments for chronic hepatitis C, and found that more complicated RASs accumulated in the viral genome with successive failed treatments. The highly resistant P32del RAS at NS5A region was uniquely found in patients for whom DAA treatments had failed, and was linked to the presence and absence of specific RASs.
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Key Words
- ALT, alanine aminotransferase
- AST, aspartate transaminase
- ASV, asunaprevir
- BCV, beclabuvir
- CT, computed tomography
- DAA, direct-acting antiviral
- DCV, daclatasvir
- Direct acting antiviral
- EBR, elbasvir
- FIB-4, Fibrosis-4
- GLE, glecaprevir
- GZR, grazoprevir
- Hepatitis C virus
- IFN, interferon
- LDV, ledipasvir
- MRI, magnetic resonance imaging
- OBV, ombitasvir
- OR, odds ratio
- P32del
- PI, protease inhibitor
- PIB, pibrentasvir
- PTV/r, paritaprevir/ritonavir
- RAS, resistance-associated substitutions
- RBV, ribavirin
- Resistance-associated substitution
- SOF, sofosbuvir
- SVR, sustained virological response
- VEL, velpatasvir
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Affiliation(s)
- Jun Itakura
- Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Musashino, Tokyo, Japan.,Japanese Red Cross liver Study Group
| | - Masayuki Kurosaki
- Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Musashino, Tokyo, Japan.,Japanese Red Cross liver Study Group
| | - Satoru Kakizaki
- Department of Gastroenterology and Hepatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Keisuke Amano
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Nobuaki Nakayama
- Department of Gastroenterology & Hepatology, Faculty of Medicine, Saitama Medical University, Iruma-Gun, Saitama, Japan
| | - Jun Inoue
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tetsu Endo
- Department of Gastroenterology and Hematology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Hiroyuki Marusawa
- Japanese Red Cross liver Study Group.,Department of Gastroenterology and Hepatology, Osaka Red Cross Hospital, Osaka, Japan
| | - Chitomi Hasebe
- Japanese Red Cross liver Study Group.,Department of Gastroenterology, Japanese Red Cross Asahikawa Hospital, Asahikawa, Hokkaido, Japan
| | - Kouji Joko
- Japanese Red Cross liver Study Group.,Center for Liver-Biliary-Pancreatic Disease, Matsuyama Red Cross Hospital, Matsuyama, Ehime, Japan
| | - Shuichi Wada
- Japanese Red Cross liver Study Group.,Department of Gastroenterology and Hepatology, Nagano Red Cross Hospital, Nagano, Japan
| | - Takehiro Akahane
- Japanese Red Cross liver Study Group.,Department of Gastroenterology and Hepatology, Ishinomaki Red Cross Hospital, Ishinomaki, Miyagi, Japan
| | - Youhei Koushima
- Japanese Red Cross liver Study Group.,Department of Gastroenterology and Hepatology, Saitama Red Cross Hospital, Saitama, Japan
| | - Chikara Ogawa
- Japanese Red Cross liver Study Group.,Department of Gastroenterology and Hepatology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa, Japan
| | - Tatsuya Kanto
- Department of Liver Disease, Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Chiba, Japan
| | - Masashi Mizokami
- Department of Genome Medical Sciences Project, Research Institute, National Center for Global Health and Medicine, Ichikawa, Chiba, Japan
| | - Namiki Izumi
- Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Musashino, Tokyo, Japan.,Japanese Red Cross liver Study Group
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Factors Influencing the Prevalence of Resistance-Associated Substitutions in NS5A Protein in Treatment-Naive Patients with Chronic Hepatitis C. Biomedicines 2020; 8:biomedicines8040080. [PMID: 32272736 PMCID: PMC7235841 DOI: 10.3390/biomedicines8040080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/24/2020] [Accepted: 04/05/2020] [Indexed: 12/12/2022] Open
Abstract
Direct-acting antivirals (DAAs) revolutionized treatment of hepatitis C virus (HCV) infection. Resistance-associated substitutions (RASs) present at the baseline impair response to DAA due to rapid selection of resistant HCV strains. NS5A is indispensable target of the current DAA treatment regimens. We evaluated prevalence of RASs in NS5A in DAA-naïve patients infected with HCV 1a (n = 19), 1b (n = 93), and 3a (n = 90) before systematic DAA application in the territory of the Russian Federation. Total proportion of strains carrying at least one RAS constituted 35.1% (71/202). In HCV 1a we detected only M28V (57.9%) attributed to a founder effect. Common RASs in HCV 1b were R30Q (7.5%), L31M (5.4%), P58S (4.4%), and Y93H (5.4%); in HCV 3a, A30S (31.0%), A30K (5.7%), S62L (8.9%), and Y93H (2.2%). Prevalence of RASs in NS5A of HCV 1b and 3a was similar to that worldwide, including countries practicing massive DAA application, i.e., it was not related to treatment. NS5A with and without RASs exhibited different co-variance networks, which could be attributed to the necessity to preserve viral fitness. Majority of RASs were localized in polymorphic regions subjected to immune pressure, with selected substitutions allowing immune escape. Altogether, this explains high prevalence of RAS in NS5A and low barrier for their appearance in DAA-inexperienced population.
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Rabaan AA, Al-Ahmed SH, Bazzi AM, Alfouzan WA, Alsuliman SA, Aldrazi FA, Haque S. Overview of hepatitis C infection, molecular biology, and new treatment. J Infect Public Health 2019; 13:773-783. [PMID: 31870632 DOI: 10.1016/j.jiph.2019.11.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 07/08/2019] [Accepted: 11/18/2019] [Indexed: 12/13/2022] Open
Abstract
The World Health Organization estimates that 71 million people worldwide have chronic hepatitis C viral infection. A major challenge is overall lack of public awareness of hepatitis C, particularly among infected people of their infection status. Chronic hepatitis C infection is associated with advanced liver disease, is the main cause of hepatocellular carcinoma and causes many extra-hepatic manifestations. The existence of seven viral genotypes complicates targeting of treatment. Recent years have seen the approval of many direct acting antivirals targeted at hepatitis C virus non-structural proteins. These have revolutionized therapy as they allow achievement of extremely high sustained virologic responses. Of great significance is the development of pan-genotypic drug combinations, including the NS3/4A-NS5A inhibitor combinations sofosbuvir-velpatasvir and glecaprevir-pibrentasvir. However, resistance-associated mutations can result in failure of these treatments in a small number of patients. This, combined with the high costs of treatment, highlights the importance of continued research into effective anti-hepatitis C therapies, for example aimed at viral entry. Recent developments include identification of the potential of low-cost anti-histamines for repurposing as inhibitors of hepatitis C viral entry. In this review we focus on molecular biology of hepatitis C virus, and the new developments in hepatitis C treatment.
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Affiliation(s)
- Ali A Rabaan
- Molecular Diagnostic Laboratory, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia.
| | - Shamsah H Al-Ahmed
- Specialty Paediatric Medicine, Qatif Central Hospital, Qatif, Saudi Arabia
| | - Ali M Bazzi
- Microbiology Laboratory, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Wadha A Alfouzan
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait; Faculty of Medicine, Kuwait University, Dasma 35153, Kuwait
| | - Shahab A Alsuliman
- Internal Medicine and Infectious Disease Department, Dammam Medical Complex, Dammam, Saudi Arabia
| | - Fatimah A Aldrazi
- Infection Control Department, Dammam Medical Complex, Dammam, Saudi Arabia
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Saudi Arabia
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9
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Jensen SB, Fahnøe U, Pham LV, Serre SBN, Tang Q, Ghanem L, Pedersen MS, Ramirez S, Humes D, Pihl AF, Filskov J, Sølund CS, Dietz J, Fourati S, Pawlotsky J, Sarrazin C, Weis N, Schønning K, Krarup H, Bukh J, Gottwein JM. Evolutionary Pathways to Persistence of Highly Fit and Resistant Hepatitis C Virus Protease Inhibitor Escape Variants. Hepatology 2019; 70:771-787. [PMID: 30964552 PMCID: PMC6772116 DOI: 10.1002/hep.30647] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 04/03/2019] [Indexed: 12/26/2022]
Abstract
Protease inhibitors (PIs) are important components of treatment regimens for patients with chronic hepatitis C virus (HCV) infection. However, emergence and persistence of antiviral resistance could reduce their efficacy. Thus, defining resistance determinants is highly relevant for efforts to control HCV. Here, we investigated patterns of PI resistance-associated substitutions (RASs) for the major HCV genotypes and viral determinants for persistence of key RASs. We identified protease position 156 as a RAS hotspot for genotype 1-4, but not 5 and 6, escape variants by resistance profiling using PIs grazoprevir and paritaprevir in infectious cell culture systems. However, except for genotype 3, engineered 156-RASs were not maintained. For genotypes 1 and 2, persistence of 156-RASs depended on genome-wide substitution networks, co-selected under continued PI treatment and identified by next-generation sequencing with substitution linkage and haplotype reconstruction. Persistence of A156T for genotype 1 relied on compensatory substitutions increasing replication and assembly. For genotype 2, initial selection of A156V facilitated transition to 156L, persisting without compensatory substitutions. The developed genotype 1, 2, and 3 variants with persistent 156-RASs had exceptionally high fitness and resistance to grazoprevir, paritaprevir, glecaprevir, and voxilaprevir. A156T dominated in genotype 1 glecaprevir and voxilaprevir escape variants, and pre-existing A156T facilitated genotype 1 escape from clinically relevant combination treatments with grazoprevir/elbasvir and glecaprevir/pibrentasvir. In genotype 1 infected patients with treatment failure and 156-RASs, we observed genome-wide selection of substitutions under treatment. Conclusion: Comprehensive PI resistance profiling for HCV genotypes 1-6 revealed 156-RASs as key determinants of high-level resistance across clinically relevant PIs. We obtained in vitro proof of concept for persistence of highly fit genotype 1-3 156-variants, which might pose a threat to clinically relevant combination treatments.
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Affiliation(s)
- Sanne Brun Jensen
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Ulrik Fahnøe
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Long V. Pham
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Stéphanie Brigitte Nelly Serre
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Qi Tang
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Lubna Ghanem
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Martin Schou Pedersen
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Department of Clinical MicrobiologyCopenhagen University HospitalHvidovreDenmark
| | - Santseharay Ramirez
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Daryl Humes
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Anne Finne Pihl
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Jonathan Filskov
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Christina Søhoel Sølund
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Department of Infectious DiseasesCopenhagen University HospitalHvidovreDenmark
| | - Julia Dietz
- Department of Internal Medicine 1University Hospital Frankfurt, and German Center for Infection Research, External Partner SiteFrankfurtGermany
| | - Slim Fourati
- National Reference Center for Viral Hepatitis B, C and D, Department of VirologyHenri Mondor Hospital, University of Paris‐Est, and INSERM U955CréteilFrance
| | - Jean‐Michel Pawlotsky
- National Reference Center for Viral Hepatitis B, C and D, Department of VirologyHenri Mondor Hospital, University of Paris‐Est, and INSERM U955CréteilFrance
| | - Christoph Sarrazin
- Department of Internal Medicine 1University Hospital Frankfurt, and German Center for Infection Research, External Partner SiteFrankfurtGermany
- Medizinische Klinik II, St. Josefs‐HospitalWiesbadenGermany
| | - Nina Weis
- Department of Infectious DiseasesCopenhagen University HospitalHvidovreDenmark
- Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Kristian Schønning
- Department of Clinical MicrobiologyCopenhagen University HospitalHvidovreDenmark
- Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Henrik Krarup
- Department of Molecular DiagnosticsAalborg University HospitalAalborgDenmark
| | - Jens Bukh
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Judith Margarete Gottwein
- Copenhagen Hepatitis C Program (CO‐HEP), Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, and Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
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Doncheva NT, Domingues FS, McGivern DR, Shimakami T, Zeuzem S, Lengauer T, Lange CM, Albrecht M, Welsch C. Near-Neighbor Interactions in the NS3-4A Protease of HCV Impact Replicative Fitness of Drug-Resistant Viral Variants. J Mol Biol 2019; 431:2354-2368. [PMID: 31051172 DOI: 10.1016/j.jmb.2019.04.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/10/2019] [Accepted: 04/23/2019] [Indexed: 12/24/2022]
Abstract
A variety of amino acid substitutions in the NS3-4A protease of the hepatitis C virus lead to protease inhibitor (PI) resistance. Many of these significantly impair the replication fitness of the resistant variants in a genotype- and subtype-dependent manner, a critical factor in determining the probability with which resistant variants will persist. However, the underlying molecular mechanisms are unknown. Here, we present a novel residue-interaction network approach to determine how near-neighbor interactions of PI resistance mutations in NS3-4A can impact protease functional sites dependent on their genomic background. We constructed subtype-specific consensus residue networks for subtypes 1a and 1b from protease structure ensembles combined with biological properties of protein residues and evolutionary amino acid conservation. By applying local and global network topology analysis and visual exploration, we characterize PI resistance-associated sites and outline differences in near-neighbor interactions. We find local residue-interaction patterns and features at protease functional sites that are subtype specific. The noncovalent bonding patterns indicate higher fitness costs conferred by PI resistance mutations in a subtype 1b genomic background and explain the prevalence of Q80K and R155K in subtype 1a. Based on local residue interactions, we predict a subtype-specific role for the protease residue NS3-Q80 in molecular mechanisms related to the assembly of infectious virus particles that is supported by experimental data on the capacity of Q80K variants to replicate and produce infectious virus in subtype 1a and 1b cell culture.
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Affiliation(s)
- Nadezhda T Doncheva
- Department of Computational Biology and Applied Algorithmics, Max Planck Institute for Informatics, Saarbrücken, Germany; Graduate School of Computer Science, Saarland University, Saarbrücken, Germany
| | | | - David R McGivern
- Division of Infectious Diseases, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Stefan Zeuzem
- Department of Internal Medicine 1, Goethe University Hospital Frankfurt, Frankfurt a.M., Germany
| | - Thomas Lengauer
- Department of Computational Biology and Applied Algorithmics, Max Planck Institute for Informatics, Saarbrücken, Germany
| | - Christian M Lange
- Department of Internal Medicine 1, Goethe University Hospital Frankfurt, Frankfurt a.M., Germany
| | - Mario Albrecht
- Institute for Knowledge Discovery, Graz University of Technology, Graz, Austria
| | - Christoph Welsch
- Department of Computational Biology and Applied Algorithmics, Max Planck Institute for Informatics, Saarbrücken, Germany; Department of Internal Medicine 1, Goethe University Hospital Frankfurt, Frankfurt a.M., Germany.
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11
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Atsukawa M, Tsubota A, Toyoda H, Takaguchi K, Kondo C, Okubo T, Hiraoka A, Michitaka K, Fujioka S, Uojima H, Watanabe T, Ikeda H, Asano T, Ishikawa T, Matsumoto Y, Abe H, Kato K, Tsuji K, Ogawa C, Shimada N, Iio E, Mikami S, Tanaka Y, Kumada T, Iwakiri K. Efficacy and safety of elbasvir/grazoprevir for Japanese patients with genotype 1b chronic hepatitis C complicated by chronic kidney disease, including those undergoing hemodialysis: A post hoc analysis of a multicenter study. J Gastroenterol Hepatol 2019; 34:364-369. [PMID: 30144366 DOI: 10.1111/jgh.14447] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/19/2018] [Accepted: 08/06/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIM This study aimed to evaluate the efficacy and safety of elbasvir/grazoprevir in genotype 1b chronic hepatitis C Japanese patients with chronic kidney disease (CKD), including those undergoing hemodialysis. METHODS This post hoc analysis of a multicenter, retrospective study included patients who had received elbasvir/grazoprevir. CKD was defined by an estimated glomerular filtration rate (eGFR) < 60 mL/min/1.73 m2 . The sustained virologic response (SVR) rate and frequency of treatment-emergent adverse events were assessed in patients with CKD. RESULTS The study population comprised 155 men and 182 women. The median eGFR level at baseline was 69.6 mL/min/1.73 m2 (range, 3.0-128.5 mL/min/1.73 m2 ). Among the 337 patients, 109 (32.3%) had CKD: 72, 14, and 23 (including 20 hemodialysis) had CKD stages 3, 4, and 5, respectively. The SVR rates according to the baseline CKD stages were 98.1% (51/52) in stage 1, 98.3% (173/176) in stage 2, 93.9% (46/49) in stage 3a, 100% (23/23) in stage 3b, 100% (14/14) in stage 4, and 100% (23/23) in stage 5. All 20 patients undergoing hemodialysis achieved SVR. There was no significant decrease from baseline in the median eGFR level throughout the treatment period among the patients with CKD. The incidence of treatment-emergent adverse events was 6.4% (7/109) among the patients with CKD and 9.7% (22/228) among the patients without CKD (not significant, P = 0.323). CONCLUSIONS The present study demonstrated that elbasvir and grazoprevir are highly effective and safe for genotype 1b chronic hepatitis C Japanese patients with CKD, including those undergoing hemodialysis.
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Affiliation(s)
- Masanori Atsukawa
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Nippon Medical School, Tokyo, Japan
| | - Akihito Tsubota
- The Core Research Facilities for Basic Science, The Jikei University School of Medicine, Tokyo, Japan
| | - Hidenori Toyoda
- Department of Gastroenterology, Ogaki Municipal Hospital, Ogaki, Japan
| | - Koichi Takaguchi
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - Chisa Kondo
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Nippon Medical School, Tokyo, Japan
| | - Tomomi Okubo
- Department of Gastroenterology, Nippon Medical School Chiba Hokusoh Hospital, Inzai, Japan
| | - Atsushi Hiraoka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Kojiro Michitaka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Shinichi Fujioka
- Department of Gastroenterology, Okayama Saiseikai General Hospital, Okayama, Japan
| | - Haruki Uojima
- Department of Gastroenterology, Internal Medicine, Kitasato University School of Medicine, Sagamihara, Japan
| | - Tsunamasa Watanabe
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Hiroki Ikeda
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Toru Asano
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
| | - Toru Ishikawa
- Department of Hepatology, Saiseikai Niigata Daini Hospital, Niigata, Japan
| | - Yoshihiro Matsumoto
- The Core Research Facilities for Basic Science, The Jikei University School of Medicine, Tokyo, Japan
| | - Hiroshi Abe
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Shinmatusdo Central General Hospital, Matsudo, Japan
| | - Keizo Kato
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Shinmatusdo Central General Hospital, Matsudo, Japan
| | - Kunihiko Tsuji
- Center of Gastroenterology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Chikara Ogawa
- Department of Gastroenterology and Hepatology, Takamatsu Red Cross Hospital, Takamatsu, Japan
| | - Noritomo Shimada
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Otakanomori Hospital, Kashiwa, Japan
| | - Etsuko Iio
- Department of Virology and Liver Unit, Nagoya City University, Nagoya, Japan
| | - Shigeru Mikami
- Department of Internal Medicine, Division of Gastroenterology, Kikkoman General Hospital, Noda, Japan
| | - Yasuhito Tanaka
- Department of Virology and Liver Unit, Nagoya City University, Nagoya, Japan
| | - Takashi Kumada
- Department of Gastroenterology, Ogaki Municipal Hospital, Ogaki, Japan
| | - Katsuhiko Iwakiri
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Nippon Medical School, Tokyo, Japan
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12
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Walker A, Ennker KS, Kaiser R, Lübke N, Timm J. A pan-genotypic Hepatitis C Virus NS5A amplification method for reliable genotyping and resistance testing. J Clin Virol 2019; 113:8-13. [PMID: 30771598 DOI: 10.1016/j.jcv.2019.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 01/15/2019] [Accepted: 01/29/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND Chronic infection with the Hepatitis C Virus (HCV) is associated with the risk of progressive liver disease. Although, HCV treatment options and viral cure rates have tremendously increased over the last decade, all currently licensed combination therapies contain inhibitors of the replication complex NS5A. Resistance-associated substitutions (RAS) in NS5A can limit the efficacy of therapy; however, resistance testing is routinely not recommended for all patients. Notably, pan-genotypic combinations have been approved, however the correct identification of the HCV genotype is still required for treatment decisions and is a good predictor for treatment success. OBJECTIVE The aim of this study was the establishment of a pan-genotypic NS5A amplification method for reliable genotyping and simultaneous resistance testing in a fast and cheap routine diagnostic setup. STUDY DESIGN Pan-genotypic degenerated nested PCR primer were designed and tested in 262 HCV-patients. The collection included samples from genotypes 1-7 and the median viral load was 1.07 × 106 IU/ml (range 248-21 × 106 IU/ml). RESULTS Amplification of the expected 747bp fragment was successful in 257 of 262 (98.1%) samples including samples <1000 IU/ml. The direct comparison of the genotype information obtained with core sequencing to those obtained by NS5A prediction showed high concordance (97.3%) and discrepancies occurred only for relatively rare subtypes. Resistance analysis using Geno2Pheno[HCV] showed NS5A-RAS in 23 of 257 (8.9%) of samples. CONCLUSIONS We successfully developed a routine diagnostic method for pan-genotypic amplification of NS5A. This amplicon can be used for simultaneous genotyping and resistance testing for enhancing and improving routine HCV diagnostic.
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Affiliation(s)
- Andreas Walker
- Institute of Virology, Heinrich-Heine-University, University Hospital, Düsseldorf, Germany.
| | - Kim Sophie Ennker
- Institute of Virology, Heinrich-Heine-University, University Hospital, Düsseldorf, Germany
| | - Rolf Kaiser
- Institute of Virology, University of Cologne, Cologne, Germany
| | - Nadine Lübke
- Institute of Virology, Heinrich-Heine-University, University Hospital, Düsseldorf, Germany
| | - Jörg Timm
- Institute of Virology, Heinrich-Heine-University, University Hospital, Düsseldorf, Germany
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Abstract
The advent of direct-acting antivirals (DAAs) has brought about a sudden renaissance in the treatment of chronic hepatitis C virus (HCV) infection with SVR rates now routinely >90%. However, due to the error-prone nature of the HCV RNA polymerase, resistance-associated substitutions (RASs) to DAAs may be present at baseline and can result in a significant effect on treatment outcomes and hamper the achievement of sustained virologic response. By further understanding the patterns and nature of these RASs, it is anticipated that the incidence of treatment failure will continue to decrease in frequency with the development of drug regimens with increasing potency, barrier to resistance, and genotypic efficacy. This review summarizes our current knowledge of RASs associated with HCV infection as well as the clinical effect of RASs on treatment with currently available DAA regimens.
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Affiliation(s)
- Darrick K Li
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Raymond T Chung
- Liver Center and Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
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14
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Esposito I, Marciano S, Haddad L, Galdame O, Franco A, Gadano A, Flichman D, Trinks J. Prevalence and Factors Related to Natural Resistance-Associated Substitutions to Direct-Acting Antivirals in Patients with Genotype 1 Hepatitis C Virus Infection. Viruses 2018; 11:E3. [PMID: 30577623 PMCID: PMC6356817 DOI: 10.3390/v11010003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/14/2018] [Accepted: 12/19/2018] [Indexed: 02/06/2023] Open
Abstract
This study aimed to assess the prevalence of natural resistance-associated substitutions (RASs) to NS3, NS5A and NS5B inhibitors in 86 genotype 1 Hepatitis C Virus (HCV)-infected patients from Buenos Aires, Argentina, and to determine their effect on therapy outcome. Additionally, virological, clinical and host genetic factors were explored as predictors of the presence of baseline RASs. NS3 RASs (39.2%) were more prevalent than NS5A RASs (25%) and NS5B RASs (8.9%). In the three regions, the frequencies of RASs were significantly higher in HCV-1b than in HCV-1a. The prevalence of Y93H, L159F and Q80K were 1.3%, 6.3% and 2.5%, respectively. IFNL3 CC genotype was identified as an independent predictor of the presence of baseline RASs in NS5A and NS3 genes (p = 0.0005 and p = 0.01, respectively). Sustained virologic response was achieved by 93.3% of the patients after receiving direct-acting antivirals (DAAs), although 48.7% of them showed baseline RASs related to the DAA-regimen. Notably, the prevalence of clinically relevant RASs in the three genes was lower than that observed around the world. The baseline presence of RASs in both subtypes did not appear to affect therapy outcome. These results support the need to evaluate resistance patterns in each particular country since RASs´ prevalence significantly vary worldwide.
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Affiliation(s)
- Isabella Esposito
- Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), CONICET, Instituto Universitario del Hospital Italiano (IUHI), Hospital Italiano (HIBA), C1199ACL Buenos Aires, Argentina.
| | - Sebastián Marciano
- Sección de Hepatología, Servicio de Clínica Médica, Hospital Italiano de Buenos Aires, C1199ABB Buenos Aires, Argentina.
- Departamento de Investigación, Hospital Italiano de Buenos Aires, C1199ABB Buenos Aires, Argentina.
| | - Leila Haddad
- Sección de Hepatología, Servicio de Clínica Médica, Hospital Italiano de Buenos Aires, C1199ABB Buenos Aires, Argentina.
| | - Omar Galdame
- Sección de Hepatología, Servicio de Clínica Médica, Hospital Italiano de Buenos Aires, C1199ABB Buenos Aires, Argentina.
| | - Alejandra Franco
- Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), CONICET, Instituto Universitario del Hospital Italiano (IUHI), Hospital Italiano (HIBA), C1199ACL Buenos Aires, Argentina.
| | - Adrián Gadano
- Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), CONICET, Instituto Universitario del Hospital Italiano (IUHI), Hospital Italiano (HIBA), C1199ACL Buenos Aires, Argentina.
- Sección de Hepatología, Servicio de Clínica Médica, Hospital Italiano de Buenos Aires, C1199ABB Buenos Aires, Argentina.
- Departamento de Investigación, Hospital Italiano de Buenos Aires, C1199ABB Buenos Aires, Argentina.
| | - Diego Flichman
- Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, C1113AAD Buenos Aires, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), C1425FQB Buenos Aires, Argentina.
| | - Julieta Trinks
- Instituto de Medicina Traslacional e Ingeniería Biomédica (IMTIB), CONICET, Instituto Universitario del Hospital Italiano (IUHI), Hospital Italiano (HIBA), C1199ACL Buenos Aires, Argentina.
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15
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Loggi E, Vukotic R, Andreone P. Managing HCV treatment failure and the potential of resistance testing in informing second-line therapy options. Expert Rev Anti Infect Ther 2018; 16:833-838. [PMID: 30336699 DOI: 10.1080/14787210.2018.1538783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Direct acting antivirals have completely changed the landscape of the treatment of chronic hepatitis C. The management of the few patients who relapse to direct acting antivirals requires a careful analysis of the chances to achieve therapeutic success with a second antiviral course. In this context, the usefulness of viral resistances testing, able to detect resistance-associated substitutions in the viral sequence, is at present a matter of debate. Areas covered: The role of resistance associated substitutions is examined through the evaluation of the data from clinical trials that have assessed the impact of viral resistances on the treatment outcome. Special attention has been paid on the data from re-treatment studies. Expert commentary: The treatment failure in chronic hepatitis C is still a possible event. Therefore, additional real-world clinical data on relapse rates and on the relapse management are welcome to definitely address the clinical guidelines. At present, the testing of viral resistances is an exquisite tool for the choice of the re-treatment schedule. In the near future, widespread use of the most recently registered direct acting antivirals with high barrier to resistance will probably weaken the need of resistance testing as a support in clinical decisions.
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Affiliation(s)
- Elisabetta Loggi
- a Dipartimento di Scienze Mediche e Chirurgiche, Centro Studi e Ricerca sulle Epatiti , Università di Bologna , Bologna , Italy
| | - Ranka Vukotic
- a Dipartimento di Scienze Mediche e Chirurgiche, Centro Studi e Ricerca sulle Epatiti , Università di Bologna , Bologna , Italy
| | - Pietro Andreone
- a Dipartimento di Scienze Mediche e Chirurgiche, Centro Studi e Ricerca sulle Epatiti , Università di Bologna , Bologna , Italy
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16
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Wei L, Omata M, Lim YS, Xie Q, Hou JL, Jia J, Hedskog C, Martin R, Doehle B, Yang J, De-Oertel S, Massetto B, Kersey K, Brainard DM, Svarovskaia E, Mo H, Han KH, Mizokami M, Duan Z. HCV phylogenetic signature and prevalence of pretreatment NS5A and NS5B NI-Resistance associated substitutions in HCV-Infected patients in Mainland China. Antiviral Res 2018; 158:178-184. [DOI: 10.1016/j.antiviral.2018.08.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 06/13/2018] [Accepted: 08/01/2018] [Indexed: 01/15/2023]
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17
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Miyasaka A, Yoshida Y, Yoshida T, Murakami A, Abe K, Ohuchi K, Kawakami T, Watanabe D, Hoshino T, Sawara K, Takikawa Y. The Real-world Efficacy and Safety of Ombitasvir/Paritaprevir/Ritonavir for Hepatitis C Genotype 1. Intern Med 2018; 57:2807-2812. [PMID: 29780135 PMCID: PMC6207834 DOI: 10.2169/internalmedicine.0810-18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Objective There are few reports on the outcomes of 12-week paritaprevir, ombitasvir, and ritonavir (PTV/OBV/r) treatment in real-world clinical settings. We aimed to evaluate the efficacy and safety of 12-week treatment with ritonavir-boosted paritaprevir and ombitasvir in patients with hepatitis C virus (HCV) genotype 1 infection in a real-world setting. Methods Fifty-eight patients with chronic hepatitis or compensated hepatic cirrhosis and genotype-1 HCV infection were treated with PTV/OBV/r and followed for 24 weeks after the completion of treatment in 10 centers in northern Tohoku. The efficacy and safety of this 12-week treatment regimen was analyzed. Results Among the 58 treated patients, 18 (31%) had compensated liver cirrhosis, while 11 (19%) patients had experienced treatment failure with another treatment regimen. NS5A resistance-associated variants (RAVs) were detected at baseline in 3 patients (5.2%), including Y93H in two patients and L31M in two patients. One patient had NS5A RAVs at both positions 93 and 31. The overall sustained virological response (SVR) 24 rate was 96.6%. Three patients with NS5A RAVs also achieved an SVR24. The SVR24 rate was not significantly affected by age, sex, prior treatment, prior history of HCC, or liver stiffness. The mean alanine aminotransferase (ALT) levels decreased significantly during this treatment. Adverse events occurred in 15 patients (26%), 26% of which were grade 1 or 2. No severe adverse events occurred. Conclusion In this real-world study, 12-week PTV/OBV/r treatment was effective and safe for treating patients with HCV-1 infection who had chronic hepatitis or compensated hepatic cirrhosis.
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Affiliation(s)
- Akio Miyasaka
- Division of Hepatology, Department of Internal Medicine, Iwate Medical University School of Medicine, Japan
| | - Yuichi Yoshida
- Division of Hepatology, Department of Internal Medicine, Iwate Medical University School of Medicine, Japan
| | | | - Akihiko Murakami
- Department of Gastroenterology, Iwate Prefectural Miyako Hospital, Japan
| | | | | | | | - Daisuke Watanabe
- Department of Gastroenterology, Noshiro Yamamoto Medical Association Hospital, Japan
| | - Takao Hoshino
- Department of Gastroenterology, Akita Kosei Medical Center, Japan
| | - Kei Sawara
- Division of Hepatology, Department of Internal Medicine, Iwate Medical University School of Medicine, Japan
- Department of Gastroenterology, Iwate Prefectural Kamaishi Hospital, Japan
| | - Yasuhiro Takikawa
- Division of Hepatology, Department of Internal Medicine, Iwate Medical University School of Medicine, Japan
- Department of Hepatology, San-ai Hospital, Japan
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18
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Sharafi H, Alavian SM. Hepatitis C resistance to NS5A inhibitors: Is it going to be a problem? World J Hepatol 2018; 10:543-548. [PMID: 30310532 PMCID: PMC6177567 DOI: 10.4254/wjh.v10.i9.543] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/19/2018] [Accepted: 08/04/2018] [Indexed: 02/06/2023] Open
Abstract
Treatment of hepatitis C virus (HCV) infection has evolved greatly through the recent decade. The availability of direct-acting antiviral agents (DAAs) targeting the functional proteins of HCV has resulted in the introduction of DAA-based combination therapies, providing an optimal rate of treatment success. Among the DAAs, NS5A inhibitors are used in most of the introduced and approved HCV antiviral regimens. Resistance-associated substitutions (RASs) are amino acid substitutions in HCV protein sequences that result in decreased antiviral efficacy of the HCV DAAs. Among the HCV RASs, the NS5A RASs were found to effectively modify and decrease treatment response to NS5A inhibitor-containing regimens. As a baseline predictor of treatment response, NS5A RAS draws attention for pretreatment testing in targeted patient groups. Given NS5A RASs are either naturally-occurring or DAA-selected, the application of NS5A RAS testing can be considered in two settings of NS5A inhibitor-naïve patients and NS5A inhibitor-experienced patients. Less than 5% of NS5A inhibitor-naïve patients harbor naturally-occurring NS5A RAS with high resistance level (> 100X resistance fold-change). In NS5A inhibitor-naïve patients, NS5A RAS testing accompanied by treatment optimization cannot increase treatment response more than 2%-3%, while in NS5A inhibitor-experienced patients, > 75% are found to have NS5A RASs > 100X and NS5A RAS testing in this group of patients seems to be reasonable. This editorial will address the debate on the application of NS5A RAS testing and will discuss if the NS5A RAS testing has any role in clinical management of hepatitis C.
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Affiliation(s)
- Heidar Sharafi
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran 1435915371, Iran
- Middle East Liver Diseases Center, Tehran 1415513651, Iran.
| | - Seyed Moayed Alavian
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran 1435915371, Iran
- Middle East Liver Diseases Center, Tehran 1415513651, Iran
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19
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Sagnelli E, Starace M, Minichini C, Pisaturo M, Macera M, Sagnelli C, Coppola N. Resistance detection and re-treatment options in hepatitis C virus-related chronic liver diseases after DAA-treatment failure. Infection 2018; 46:761-783. [DOI: 10.1007/s15010-018-1188-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022]
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20
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Knops E, Sierra S, Kalaghatgi P, Heger E, Kaiser R, Kalinina OV. Epistatic Interactions in NS5A of Hepatitis C Virus Suggest Drug Resistance Mechanisms. Genes (Basel) 2018; 9:E343. [PMID: 29986475 PMCID: PMC6071292 DOI: 10.3390/genes9070343] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/29/2018] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) causes a major health burden and can be effectively treated by direct-acting antivirals (DAAs). The non-structural protein 5A (NS5A), which plays a role in the viral genome replication, is one of the DAAs’ targets. Resistance-associated viruses (RAVs) harbouring NS5A resistance-associated mutations (RAMs) have been described at baseline and after therapy failure. A mutation from glutamine to arginine at position 30 (Q30R) is a characteristic RAM for the HCV sub/genotype (GT) 1a, but arginine corresponds to the wild type in the GT-1b; still, GT-1b strains are susceptible to NS5A-inhibitors. In this study, we show that GT-1b strains with R30Q often display other specific NS5A substitutions, particularly in positions 24 and 34. We demonstrate that in GT-1b secondary substitutions usually happen after initial R30Q development in the phylogeny, and that the chemical properties of the corresponding amino acids serve to restore the positive charge in this region, acting as compensatory mutations. These findings may have implications for RAVs treatment.
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Affiliation(s)
- Elena Knops
- Institute of Virology, University of Cologne, 50935 Cologne, Germany.
| | - Saleta Sierra
- Institute of Virology, University of Cologne, 50935 Cologne, Germany.
- German Center for Infection Research (DZIF)-Cologne-Bonn Partner Site, 50935 Cologne, Germany.
| | - Prabhav Kalaghatgi
- Department of Computational Biology and Applied Algorithmics, Max Planck Institute for Informatics, 66123 Saarbrücken, Germany.
- German Center for Infection Research (DZIF)-Saarbrücken Partner Site, 66123 Saarbrücken, Germany.
| | - Eva Heger
- Institute of Virology, University of Cologne, 50935 Cologne, Germany.
| | - Rolf Kaiser
- Institute of Virology, University of Cologne, 50935 Cologne, Germany.
- German Center for Infection Research (DZIF)-Cologne-Bonn Partner Site, 50935 Cologne, Germany.
| | - Olga V Kalinina
- Department of Computational Biology and Applied Algorithmics, Max Planck Institute for Informatics, 66123 Saarbrücken, Germany.
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21
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Kozuka R, Hai H, Motoyama H, Hagihara A, Fujii H, Uchida-Kobayashi S, Morikawa H, Enomoto M, Murakami Y, Kawada N, Tamori A. The presence of multiple NS5A RASs is associated with the outcome of sofosbuvir and ledipasvir therapy in NS5A inhibitor-naïve patients with chronic HCV genotype 1b infection in a real-world cohort. J Viral Hepat 2018; 25:535-542. [PMID: 29274188 DOI: 10.1111/jvh.12850] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 11/22/2017] [Indexed: 02/06/2023]
Abstract
It is unclear whether multiple nonstructural (NS) 5A resistance-associated substitutions (RASs) correlate with the outcome of sofosbuvir (SOF) and ledipasvir (LDV) therapy. We investigated the effects of multiple NS5A RASs in NS5A inhibitor-naïve patients with chronic hepatitis C virus genotype 1b infection treated with SOF/LDV. In 313 patients treated with SOF/LDV, we assessed the effects of multiple NS5A RASs on the sustained virological response (SVR). RASs at L28, R30, L31, Q54, P58, Q62, A92, and Y93 in the NS5A region were examined by direct sequencing. The prevalence of RASs was as follows: 2.6% at L28, 8.7% at R30, 6.1% at L31, 48.7% at Q54, 9.9% at P58, 9.9% at Q62, 5.1% at A92, 13.8% at Y93, and 19.2% at L31 or Y93. A total of 133 patients had no RASs. SVR was achieved in 98.7% of the patients. SVR rates significantly differed between patients with and without the L31 or Y93 RAS (93.0% [53/57] vs 100% [250/250], P = .0011). In addition, among patients with the L31 or Y93 RAS, 29.8%, 45.6% and 24.6% had one, two and three or more NS5A RASs, respectively. The SVR rate was significantly lower in patients with the L31 or Y93 RAS with more than three NS5A RASs compared to those with fewer than three NS5A RASs (71.4% [10/14] vs 100% [43/43], P = .0025). Although the prevalence of multiple NS5A RASs at baseline was low in NS5A inhibitor-naïve patients, the presence of multiple NS5A RASs was associated with the effectiveness of SOF/LDV therapy.
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Affiliation(s)
- R Kozuka
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Hai
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Motoyama
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - A Hagihara
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Fujii
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - S Uchida-Kobayashi
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Morikawa
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Enomoto
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Y Murakami
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - N Kawada
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - A Tamori
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
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22
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Uemura H, Uchida Y, Kouyama JI, Naiki K, Yamaba S, Fuchigami A, Saito Y, Shiokawa K, Fujii Y, Uchiya H, Nakazawa M, Ando S, Nakao M, Motoya D, Sugawara K, Inao M, Imai Y, Nakayama N, Tomiya T, Mochida S. Retreatment with sofosbuvir/ledipasvir with or without lead-in interferon-β injections in patients infected with genotype 1b hepatitis C virus after unsuccessful daclatasvir/asunaprevir therapy. Hepatol Res 2018; 48:233-243. [PMID: 28884930 DOI: 10.1111/hepr.12980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/17/2017] [Accepted: 09/03/2017] [Indexed: 12/13/2022]
Abstract
AIM To improve the therapeutic efficacy of sofosbuvir/ledipasvir (SOF/LDV) for the retreatment of patients after daclatasvir/asunaprevir (DCV/ASV), a customized therapy with or without lead-in interferon (IFN)-β injections was formulated according to the types of resistance-associated substitutions (RAS) in the non-structural protein (NS)5A region of genotype 1b hepatitis C virus (HCV). METHODS Thirty-three patients failing prior DCV/ASV received SOF/LDV for 12 weeks. Patients with HCV carrying unfavorable NS5A-RAS and/or those previously treated with simeprevir were given lead-in IFN-β injections twice a day for 2 weeks; sequential changes in the NS5A-RAS during the injection period were evaluated using deep sequencing. RESULTS Lead-in injections were not undertaken in 27 patients; a sustained viral response (SVR) was achieved in 26 patients, while viral relapse occurred in 1 patient with HCV carrying NS5A-L28M/R30H/Y93H mutations. Among the 6 patients receiving lead-in injections, viral relapse occurred in 2 patients who had an unfavorable IFN-λ3-related gene single nucleotide polymorphism allele; both patients had been previously treated with simeprevir, and HCV carrying NS5A-L31V/Y93H mutations had emerged after DCV/ASV. Deep sequencing revealed no changes in the NS5A-RAS profiles during the lead-in injection period in either patient. In contrast, in a patient with a favorable allele who was infected with similar unfavorable HCV strains, NS5A-L31/Y93 wild-type strains appeared during the injection period, enabling an SVR. CONCLUSION Using customized therapies based on the NS5A-RAS profiles, a high SVR rate was obtained after SOF/LDV in patients failing prior DCV/ASV. Lead-in IFN-β injections did not improve the efficacy in patients with HCV carrying unfavorable NS5A-RAS except in those with a favorable IFN-λ3-related gene allele.
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Affiliation(s)
- Hayato Uemura
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Yoshihito Uchida
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Jun-Ichi Kouyama
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Kayoko Naiki
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Shinpei Yamaba
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Akira Fuchigami
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Yoichi Saito
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Keisuke Shiokawa
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Yohei Fujii
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Hiroshi Uchiya
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Manabu Nakazawa
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Satsuki Ando
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Masamitsu Nakao
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Daisuke Motoya
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Kayoko Sugawara
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Mie Inao
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Yukinori Imai
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Nobuaki Nakayama
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Tomoaki Tomiya
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Satoshi Mochida
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
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23
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Liu CH, Liu CJ, Su TH, Yang HC, Hong CM, Tseng TC, Chen PJ, Chen DS, Kao JH. Real-world effectiveness and safety of paritaprevir/ritonavir, ombitasvir, and dasabuvir with or without ribavirin for patients with chronic hepatitis C virus genotype 1b infection in Taiwan. J Gastroenterol Hepatol 2018; 33:710-717. [PMID: 28762541 DOI: 10.1111/jgh.13912] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/18/2017] [Accepted: 07/25/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND AIM The real-world effectiveness and safety of paritaprevir/ritonavir, ombitasvir, and dasabuvir (PrOD) remain limited for East Asian hepatitis C virus genotype 1b (HCV-1b) patients. The study aimed to evaluate the antiviral responses of PrOD-based regimens for HCV-1b patients in Taiwan. METHODS The study performed a retrospective analysis of 103 HCV-1b patients receiving PrOD with or without ribavirin (RBV) for 12 weeks. Data were analyzed to assess the on-treatment and off-therapy HCV viral load and on-treatment adverse events. The pre-specified characteristics related to sustained virologic response 12 weeks off therapy (SVR12 ) were compared. RESULTS At treatment week 4, 100 of 102 patients (98.0%) had serum HCV RNA level < 25 IU/mL. The SVR12 was achieved in 101 of 103 patients (98.1%, [95% confidence interval: 93.2-99.5%]). All except one (99.0%) patients tolerated treatment well without treatment interruption. One cirrhotic patient discontinued treatment at week 1 due to hepatic decompensation. Twenty-four patients (23.3%) had ≥ grade 2 elevation in total bilirubin levels, and 21 of them (87.5%) had indirect type hyperbilirubinemia. The stratified SVR12 rates were comparable in terms of sex, age, body mass index, prior treatment experience, hepatitis B virus surface antigen status, RBV usage, baseline and week 2 viral load, renal function, and hepatic fibrosis stage. CONCLUSIONS Paritaprevir/ritonavir, ombitasvir, and dasabuvir with or without RBV are efficacious and generally well tolerated for treatment of HCV-1b patients in Taiwan.
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Affiliation(s)
- Chen-Hua Liu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Yun-Lin Branch, Douliou, Taiwan
| | - Chun-Jen Liu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Tung-Hung Su
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Hung-Chih Yang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Microbiology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chun-Ming Hong
- Department of Traumatology, National Taiwan University Hospital, Taipei, Taiwan
| | - Tai-Chung Tseng
- National Taiwan University Hospital, Jinshan Branch, New Taipei City, Taiwan
| | - Pei-Jer Chen
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ding-Shinn Chen
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Jia-Horng Kao
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
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24
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Sorbo MC, Cento V, Di Maio VC, Howe AYM, Garcia F, Perno CF, Ceccherini-Silberstein F. Hepatitis C virus drug resistance associated substitutions and their clinical relevance: Update 2018. Drug Resist Updat 2018. [PMID: 29525636 DOI: 10.1016/j.drup.2018.01.004] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nowadays, due to the development of potent Direct-Acting Antiviral Agents (DAAs) that specifically target NS3, NS5A and NS5B viral proteins, several new and highly efficacious options to treat chronic Hepatitis C virus (HCV) infection are available. The natural presence of resistance associated substitutions (RASs), as well as their rapid emergence during incomplete drug-pressure, are intrinsic characteristics of HCV that greatly affect treatment outcome and the chances to achieve a virolgical cure. To date, a high number of RASs in NS3, NS5A, and NS5B have been associated in vivo and/or in vitro with reduced susceptibility to DAAs, but no comprehensive RASs list is available. This review thus provides an updated, systematic overview of the role of RASs to currently approved DAAs or in phase II/III of clinical development against HCV-infection, discriminating their impact in different HCV-genotypes and DAAs, providing assistance for a fruitful use of HCV resistance testing in clinical practice.
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Affiliation(s)
- Maria C Sorbo
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy
| | - Valeria Cento
- Residency program in Microbiology and Virology, Università degli Studi di Milano. Milan, Italy.
| | - Velia C Di Maio
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy
| | - Anita Y M Howe
- Centre for Excellence in HIV/AIDS, St Paul's Hospital, Vancouver, BC, Canada
| | - Federico Garcia
- Clinical Microbiology Service, Hospital Universitario San Cecilio, Granada, Spain
| | - Carlo F Perno
- Department of Oncology and Oncohematology, Università degli Studi di Milano. Milan, Italy.
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25
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Krishnan P, Schnell G, Tripathi R, Beyer J, Reisch T, Dekhtyar T, Irvin M, Xie W, Fu B, Burroughs M, Redman R, Kumada H, Chayama K, Collins C, Pilot-Matias T. Integrated Resistance Analysis of CERTAIN-1 and CERTAIN-2 Studies in Hepatitis C Virus-Infected Patients Receiving Glecaprevir and Pibrentasvir in Japan. Antimicrob Agents Chemother 2018; 62:e02217-17. [PMID: 29180522 PMCID: PMC5786793 DOI: 10.1128/aac.02217-17] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 11/19/2017] [Indexed: 02/06/2023] Open
Abstract
Glecaprevir and pibrentasvir are hepatitis C virus (HCV) pangenotypic inhibitors targeting NS3/4A protease and NS5A, respectively. This once-daily, fixed-dose combination regimen demonstrated high sustained virologic response 12 weeks postdosing (SVR12) rates in CERTAIN-1 and CERTAIN-2 studies in Japanese HCV-infected patients, with a low virologic failure rate (1.2%). There were no virologic failures among direct-acting antiviral (DAA)-treatment-naive genotype 1a (GT1a) (n = 4)-, GT1b (n = 128)-, and GT2 (n = 97)-infected noncirrhotic patients treated for 8 weeks or among GT1b (n = 38)- or GT2 (n = 20)-infected patients with compensated cirrhosis treated for 12 weeks. Two of 33 DAA-experienced and 2 of 12 GT3-infected patients treated for 12 weeks experienced virologic failure. Pooled resistance analysis, grouped by HCV subtype, treatment duration, prior treatment experience, and cirrhosis status, was conducted. Among DAA-naive GT1b-infected patients, the baseline prevalence of NS3-D168E was 1.2%, that of NS5A-L31M was 3.6%, and that of NS5A-Y93H was 17.6%. Baseline polymorphisms in NS3 or NS5A were less prevalent in GT2, with the exception of the common L/M31 polymorphism in NS5A. Among DAA-experienced GT1b-infected patients (30/32 daclatasvir plus asunaprevir-experienced patients), the baseline prevalence of NS3-D168E/T/V was 48.4%, that of NS5A-L31F/I/M/V was 81.3%, that of the NS5A P32deletion was 6.3%, and that of NS5A-Y93H was 59.4%. Common baseline polymorphisms in NS3 and/or NS5A had no impact on treatment outcomes in GT1- and GT2-infected patients; the impact on GT3-infected patients could not be assessed due to the enrollment of patients infected with diverse subtypes and the limited number of patients. The glecaprevir-pibrentasvir combination regimen allows a simplified treatment option without the need for HCV subtyping or baseline resistance testing for DAA-naive GT1- or GT2-infected patients. (The CERTAIN-1 and CERTAIN-2 studies have been registered at ClinicalTrials.gov under identifiers NCT02707952 and NCT02723084, respectively.).
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Affiliation(s)
- Preethi Krishnan
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Gretja Schnell
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Rakesh Tripathi
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Jill Beyer
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Thomas Reisch
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Tatyana Dekhtyar
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Michelle Irvin
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Wangang Xie
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | - Bo Fu
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | | | - Rebecca Redman
- Research and Development, AbbVie Inc., North Chicago, Illinois, USA
| | | | - Kazuaki Chayama
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima, Japan
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26
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Integrated Resistance Analysis of CERTAIN-1 and CERTAIN-2 Studies in Hepatitis C Virus-Infected Patients Receiving Glecaprevir and Pibrentasvir in Japan. Antimicrob Agents Chemother 2018. [PMID: 29180522 DOI: 10.1128/aac.02217-17:] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Glecaprevir and pibrentasvir are hepatitis C virus (HCV) pangenotypic inhibitors targeting NS3/4A protease and NS5A, respectively. This once-daily, fixed-dose combination regimen demonstrated high sustained virologic response 12 weeks postdosing (SVR12) rates in CERTAIN-1 and CERTAIN-2 studies in Japanese HCV-infected patients, with a low virologic failure rate (1.2%). There were no virologic failures among direct-acting antiviral (DAA)-treatment-naive genotype 1a (GT1a) (n = 4)-, GT1b (n = 128)-, and GT2 (n = 97)-infected noncirrhotic patients treated for 8 weeks or among GT1b (n = 38)- or GT2 (n = 20)-infected patients with compensated cirrhosis treated for 12 weeks. Two of 33 DAA-experienced and 2 of 12 GT3-infected patients treated for 12 weeks experienced virologic failure. Pooled resistance analysis, grouped by HCV subtype, treatment duration, prior treatment experience, and cirrhosis status, was conducted. Among DAA-naive GT1b-infected patients, the baseline prevalence of NS3-D168E was 1.2%, that of NS5A-L31M was 3.6%, and that of NS5A-Y93H was 17.6%. Baseline polymorphisms in NS3 or NS5A were less prevalent in GT2, with the exception of the common L/M31 polymorphism in NS5A. Among DAA-experienced GT1b-infected patients (30/32 daclatasvir plus asunaprevir-experienced patients), the baseline prevalence of NS3-D168E/T/V was 48.4%, that of NS5A-L31F/I/M/V was 81.3%, that of the NS5A P32deletion was 6.3%, and that of NS5A-Y93H was 59.4%. Common baseline polymorphisms in NS3 and/or NS5A had no impact on treatment outcomes in GT1- and GT2-infected patients; the impact on GT3-infected patients could not be assessed due to the enrollment of patients infected with diverse subtypes and the limited number of patients. The glecaprevir-pibrentasvir combination regimen allows a simplified treatment option without the need for HCV subtyping or baseline resistance testing for DAA-naive GT1- or GT2-infected patients. (The CERTAIN-1 and CERTAIN-2 studies have been registered at ClinicalTrials.gov under identifiers NCT02707952 and NCT02723084, respectively.).
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27
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Malta F, Gaspareto KV, Lisboa-Neto G, Carrilho FJ, Mendes-Correa MC, Pinho JRR. Prevalence of naturally occurring NS5A resistance-associated substitutions in patients infected with hepatitis C virus subtype 1a, 1b, and 3a, co-infected or not with HIV in Brazil. BMC Infect Dis 2017; 17:716. [PMID: 29132303 PMCID: PMC5683373 DOI: 10.1186/s12879-017-2817-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 11/05/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Non-structural 5A protein (NS5A) resistance-associated substitutions (RASs) have been identified in patients infected with hepatitis C virus (HCV), even prior to exposure to direct-acting antiviral agents (DAAs). Selection for these variants occurs rapidly during treatment and, in some cases, leads to antiviral treatment failure. DAAs are currently the standard of care for hepatitis C treatment in many parts of the world. Nevertheless, in Brazil, the prevalence of pre-existing NS5A RASs is largely unknown. In this study, we evaluated the frequency of naturally occurring NS5A RASs in Brazilian patients infected with HCV as either a monoinfection or coinfection with human immunodeficiency virus (HIV). METHODS Direct Sanger sequencing of the NS5A region was performed in 257 DAA-naïve patients chronically infected with HCV (156 monoinfected with HCV and 101 coinfected with HIV/HCV). RESULTS The frequencies of specific RASs in monoinfected patients were 14.6% for HCV GT-1a (M28 V and Q30H/R), 6.0% for GT-1b (L31F/V and Y93H), and 22.6% for GT-3a (A30K and Y93H). For HIV/HCV-coinfected patients, the frequencies of RAS were 3.9% for GT-1a (M28 T and Q30H/R), and 11.1% for GT-1b (Y93H); no RASs were found in GT-3a sequences. CONCLUSIONS Substitutions that may confer resistance to NS5A inhibitors exist at baseline in Brazilian DAA-naïve patients infected with HCV GT-1a, -1b, and -3a. Standardization of RAS definitions is needed to improve resistance analyses and to facilitate comparisons of substitutions reported across studies worldwide. Therapeutic strategies should be optimized to efficiently prevent DAA treatment failure due to selection for RASs, especially in difficult-to-cure patients.
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Affiliation(s)
- Fernanda Malta
- Institute of Tropical Medicine, LIM-07, University of São Paulo, Av. Dr. Enéas Carvalho Aguiar, 500 – 2nd floor IMT-II, São Paulo, SP 05403-000 Brazil
- Department of Gastroenterology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Karine Vieira Gaspareto
- Institute of Tropical Medicine, LIM-07, University of São Paulo, Av. Dr. Enéas Carvalho Aguiar, 500 – 2nd floor IMT-II, São Paulo, SP 05403-000 Brazil
- Department of Gastroenterology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Gaspar Lisboa-Neto
- Department of Infectious Diseases, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Flair José Carrilho
- Department of Gastroenterology, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Maria Cássia Mendes-Correa
- Department of Infectious Diseases, University of São Paulo School of Medicine, São Paulo, Brazil
- Institute of Tropical Medicine, LIM-52, University of São Paulo, São Paulo, SP Brazil
| | - João Renato Rebello Pinho
- Institute of Tropical Medicine, LIM-07, University of São Paulo, Av. Dr. Enéas Carvalho Aguiar, 500 – 2nd floor IMT-II, São Paulo, SP 05403-000 Brazil
- Department of Gastroenterology, University of São Paulo School of Medicine, São Paulo, Brazil
- Hospital Israelita Albert Einstein, São Paulo, Brazil
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28
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Spengler U. Direct antiviral agents (DAAs) - A new age in the treatment of hepatitis C virus infection. Pharmacol Ther 2017; 183:118-126. [PMID: 29024739 DOI: 10.1016/j.pharmthera.2017.10.009] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hepatitis C virus (HCV) is a global health problem, because infection frequently leads to chronic hepatitis C eventually progressing to liver cirrhosis and liver cancer. Improved insights into the HCV replication cycle and the role of HCV non-structural proteins have recently enabled to identify drugs directly acting on specific HCV target structures. Agents from three drug classes have been developed and approved by the health authorities. Combinations of two or more drugs from different classes achieve high (>90%) HCV clearance rates and are well tolerated. This interferon-free DAA (direct antiviral agent) therapy has revolutionized antiviral therapy in hepatitis C so that successful hepatitis C treatment can be offered to virtually all patients irrespective of their co-morbidity. This review provides an overview over currently approved regimens and outlines their use in clinical practice. In addition potential short-comings of the current therapeutic options such as drug-drug interactions and selection of viral resistance are addressed. DAA combination therapy has the potential to obtain global control over hepatitis C. However, easy access to DAAs, availability of reliable HCV diagnostics, and affordable costs remain still important goals, which must be reached to globally eliminate hepatitis C.
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Affiliation(s)
- Ulrich Spengler
- Department of Internal Medicine 1, Rheinische Friedrich-Wilhelms-University of Bonn, Bonn, Germany.
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29
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Zeuzem S, Mizokami M, Pianko S, Mangia A, Han KH, Martin R, Svarovskaia E, Dvory-Sobol H, Doehle B, Hedskog C, Yun C, Brainard DM, Knox S, McHutchison JG, Miller MD, Mo H, Chuang WL, Jacobson I, Dore GJ, Sulkowski M. NS5A resistance-associated substitutions in patients with genotype 1 hepatitis C virus: Prevalence and effect on treatment outcome. J Hepatol 2017; 66:910-918. [PMID: 28108232 DOI: 10.1016/j.jhep.2017.01.007] [Citation(s) in RCA: 166] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 12/22/2016] [Accepted: 01/04/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS The efficacy of NS5A inhibitors for the treatment of patients chronically infected with hepatitis C virus (HCV) can be affected by the presence of NS5A resistance-associated substitutions (RASs). We analyzed data from 35 phase I, II, and III studies in 22 countries to determine the pretreatment prevalence of various NS5A RASs, and their effect on outcomes of treatment with ledipasvir-sofosbuvir in patients with genotype 1 HCV. METHODS NS5A gene deep sequencing analysis was performed on samples from 5397 patients in Gilead clinical trials. The effect of baseline RASs on sustained virologic response (SVR) rates was assessed in the 1765 patients treated with regimens containing ledipasvir-sofosbuvir. RESULTS Using a 15% cut-off, pretreatment NS5A and ledipasvir-specific RASs were detected in 13% and 8% of genotype 1a patients, respectively, and in 18% and 16% of patients with genotype 1b. Among genotype 1a treatment-naïve patients, SVR rates were 91% (42/46) vs. 99% (539/546) for those with and without ledipasvir-specific RASs, respectively. Among treatment-experienced genotype 1a patients, SVR rates were 76% (22/29) vs. 97% (409/420) for those with and without ledipasvir-specific RASs, respectively. Among treatment-naïve genotype 1b patients, SVR rates were 99% for both those with and without ledipasvir-specific RASs (71/72 vs. 331/334), and among treatment-experienced genotype 1b patients, SVR rates were 89% (41/46) vs. 98% (267/272) for those with and without ledipasvir-specific RASs, respectively. CONCLUSIONS Pretreatment ledipasvir-specific RASs that were present in 8-16% of patients have an impact on treatment outcome in some patient groups, particularly treatment-experienced patients with genotype 1a HCV. LAY SUMMARY The efficacy of treatments using NS5A inhibitors for patients with chronic hepatitis C virus (HCV) infection can be affected by the presence of NS5A resistance-associated substitutions (RASs). We reviewed results from 35 clinical trials where patients with genotype 1 HCV infection received treatments that included ledipasvir-sofosbuvir to determine how prevalent NS5A RASs are in patients at baseline, and found that ledipasvir-specific RASs were present in 8-16% of patients prior to treatment and had a negative impact on treatment outcome in subset of patient groups, particularly treatment-experienced patients with genotype 1a HCV.
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Affiliation(s)
| | | | - Stephen Pianko
- Monash Health and Monash University, Melbourne, Australia
| | - Alessandra Mangia
- IRCCS Hospital 'Casa Sollievo della Sofferenza', San Giovanni Rotondo, Italy
| | - Kwang-Hyub Han
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ross Martin
- Gilead Sciences, Inc., Foster City, CA, United States
| | | | | | - Brian Doehle
- Gilead Sciences, Inc., Foster City, CA, United States
| | | | - Chohee Yun
- Gilead Sciences, Inc., Foster City, CA, United States
| | | | - Steven Knox
- Gilead Sciences, Inc., Foster City, CA, United States
| | | | | | - Hongmei Mo
- Gilead Sciences, Inc., Foster City, CA, United States
| | - Wan-Long Chuang
- Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ira Jacobson
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Gregory J Dore
- The Kirby Institute, University of New South Wales, Sydney, Australia
| | - Mark Sulkowski
- Johns Hopkins University School of Medicine, Baltimore, MD, United States
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30
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Mo H, Hedskog C, Lawitz E, Brainard DM, Yang J, Delaney W, Worth A, Miller MD. Antiviral response and resistance analysis of treatment-naïve HCV infected patients receiving multiple doses of the NS3 protease inhibitor GS-9256. Antiviral Res 2017; 140:151-157. [PMID: 28132867 DOI: 10.1016/j.antiviral.2017.01.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 01/23/2017] [Indexed: 01/14/2023]
Abstract
The NS3 protease inhibitor (PI) GS-9256 has demonstrated antiviral activity in a monotherapy study and in combination with other DAAs for treatment of chronic hepatitis C virus (HCV) infection. The resistance profile of GS-9256 was investigated in a phase 1 monotherapy study of patients with HCV genotype (GT) 1 infection. No PI resistance associated substitutions (RASs) at positions 36, 155, 156, 168 and 170 were observed at baseline by population sequencing (15% cutoff) in the 54 patients enrolled in the study, however the PI RAS Q80K were detected in 41% of patients at baseline. In patients who received 75 mg of the investigational protease inhibitor (PI) GS-9256 BID, 300 mg of GS-9256 QD and 200 mg of GS-9256 BID for three days, NS3 RASs (A156V, R155K, D168G/E/N/V) were observed in 9/21, 3/7 and 8/8 post-treatment, respectively. Q80K was not selected in any patients post-treatment. The mean maximal viral load response was -3.0 ± 0.42 log10 IU/mL HCV RNA in the 200 mg BID cohort. In more than 50% of the patients with RASs detected at Day 4, mutations were no longer detectable by population sequencing at Day 14. One patient had the R155K mutation persist to Week 24. Phenotypic analyses showed that substitutions at R155, A156 and D168 significantly reduced susceptibility to GS-9256. In conclusion, NS3 PI RASs were rapidly selected in the majority of patients receiving GS-9256 as monotherapy, despite undetectable levels at baseline. The R155, A156 and D168 substitutions identified in patients confer reduced susceptibility to GS-9256 and other PIs in vitro.
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Affiliation(s)
- Hongmei Mo
- Gilead Sciences Inc, Foster City, CA, USA.
| | | | - Eric Lawitz
- Texas Liver Institute, University of Texas Health Science Center, San Antonio, TX, USA
| | | | - Jenny Yang
- Gilead Sciences Inc, Foster City, CA, USA
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31
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Gozlan Y, Ben-Ari Z, Moscona R, Shirazi R, Rakovsky A, Kabat A, Veizman E, Berdichevski T, Weiss P, Cohen-Ezra O, Lurie Y, Gafanovich I, Braun M, Cohen-Naftaly M, Shlomai A, Shibolet O, Zigmond E, Zuckerman E, Carmiel-Haggai M, Nimer A, Hazzan R, Maor Y, Kitay-Cohen Y, Shemer-Avni Y, Kra-Oz Z, Schreiber L, Peleg O, Sierra S, Harrigan PR, Mendelson E, Mor O. HCV genotype-1 subtypes and resistance-associated substitutions in drug-naive and in direct-acting antiviral treatment failure patients. Antivir Ther 2017; 22:431-441. [PMID: 28067632 DOI: 10.3851/imp3123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Direct-acting antiviral (DAA) treatment regimens and response rates of patients with HCV genotype-1 (GT1) are currently considered subtype-dependent. Identification of clinically relevant resistance-associated substitutions (RASs) in the NS3 and NS5A proteins at baseline and in DAA failures, may also impact clinical decisions. METHODS In a multicentre cohort study (n=308), NS3 or NS5B sequencing (n=248) was used to discriminate between GT1 subtypes. The correlation between baseline NS3 and NS5A RASs on the 12-week sustained virological response (SVR12) rates of 160 of the patients treated with second-generation DAAs was also assessed. Post-treatment resistance analysis was performed on samples from 58 patients exhibiting DAA virological failure. RESULTS GT1a, GT1b and GT1d subtypes were identified in 23.0%, 75.4% and 1.2% of tested samples. GT1b was most prevalent (97.7%, 128/131) among patients born in the former Soviet Union. The Q80K NS3 RAS was identified in 17.5% (10/57) of the GT1a carriers, most of whom were Israeli-born. NS3 and NS5A baseline RASs showed a negligible correlation with SVR12 rates. Treatment-emergent RASs were observed among 8.9% (4/45) and 76.9% (10/13) of first- and second-generation DAA failures, respectively, with D168V/E (NS3), Y93H and L31M (NS5A) being the most prevalent mutations. CONCLUSIONS NS3 sequencing analysis can successfully discriminate between GT1 subtypes and identify NS3 amino acid substitutions. While pre-treatment NS3 and NS5A RASs marginally affect second-generation DAA SVR12 rates, post-treatment resistance analysis should be considered prior to re-therapy.
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Affiliation(s)
- Yael Gozlan
- Central Virology Laboratory, Ministry of Health, Sheba Medical Center, Ramat-Gan, Israel
| | - Ziv Ben-Ari
- Liver Disease Center, Sheba Medical Center, Ramat-Gan, Israel.,The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Roy Moscona
- Central Virology Laboratory, Ministry of Health, Sheba Medical Center, Ramat-Gan, Israel
| | - Rachel Shirazi
- Central Virology Laboratory, Ministry of Health, Sheba Medical Center, Ramat-Gan, Israel
| | - Aviya Rakovsky
- Central Virology Laboratory, Ministry of Health, Sheba Medical Center, Ramat-Gan, Israel
| | - Arij Kabat
- Central Virology Laboratory, Ministry of Health, Sheba Medical Center, Ramat-Gan, Israel
| | - Ella Veizman
- Liver Disease Center, Sheba Medical Center, Ramat-Gan, Israel
| | | | - Peretz Weiss
- Liver Disease Center, Sheba Medical Center, Ramat-Gan, Israel
| | | | - Yoav Lurie
- Liver Unit, Shaare Zedek Medical Center, Jerusalem, Israel
| | | | - Marius Braun
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Liver Institute, Rabin Medical Center, Petah-Tikva, Israel
| | - Michal Cohen-Naftaly
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Liver Institute, Rabin Medical Center, Petah-Tikva, Israel
| | - Amir Shlomai
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Liver Institute, Rabin Medical Center, Petah-Tikva, Israel
| | - Oren Shibolet
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Gastroenterology, Tel-Aviv Medical Center, Tel Aviv, Israel
| | - Ehud Zigmond
- The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Gastroenterology, Tel-Aviv Medical Center, Tel Aviv, Israel
| | | | - Michal Carmiel-Haggai
- Liver Unit, Galilee Medical Center, Naharya, Israel.,Faculty of Medicine in the Galilee, Bar-Ilan University, Ramat-Gan, Israel
| | - Assy Nimer
- Faculty of Medicine in the Galilee, Bar-Ilan University, Ramat-Gan, Israel.,Internal Medicine Department, Galilee Medical Center, Naharya, Israel
| | - Rawi Hazzan
- Liver Unit, Haemek Medical Center, Afula, Israel
| | - Yaakov Maor
- Division of Gastroenterology, Kaplan Health Sciences Centre, Department of Medicine, Faculty of Medicine, Hebrew University, Rehovot, Israel
| | - Yona Kitay-Cohen
- Gastroenterology and Hepatology Institute, Meir Medical Center, Kfar Saba, Israel
| | | | - Zipi Kra-Oz
- Virology Laboratory, Rambam Medical Center, Haifa, Israel
| | | | | | - Saleta Sierra
- Institute of Virology, University of Cologne, Cologne, Germany
| | | | - Ella Mendelson
- Central Virology Laboratory, Ministry of Health, Sheba Medical Center, Ramat-Gan, Israel.,School of Public Health, Tel Aviv University, Tel Aviv, Israel
| | - Orna Mor
- Central Virology Laboratory, Ministry of Health, Sheba Medical Center, Ramat-Gan, Israel
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32
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Iio E, Shimada N, Abe H, Atsukawa M, Yoshizawa K, Takaguchi K, Eguchi Y, Nomura H, Kuramitsu T, Kang JH, Matsui T, Hirashima N, Tsubota A, Kusakabe A, Hasegawa I, Miyaki T, Shinkai N, Fujiwara K, Nojiri S, Tanaka Y. Efficacy of daclatasvir/asunaprevir according to resistance-associated variants in chronic hepatitis C with genotype 1. J Gastroenterol 2017; 52:94-103. [PMID: 27236547 DOI: 10.1007/s00535-016-1225-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/11/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND The present study explored the treatment outcome of daclatasvir (DCV) and asunaprevir (ASV) therapy combining oral direct-acting antiviral agents (DAAs) for chronic hepatitis C (HCV) including liver cirrhosis according to resistance-associated variants (RAVs) in NS3/NS5A region. METHODS Overall, 641 patients enrolled in Japan with HCV-1b received DCV and ASV for 24 weeks. Baseline drug-resistant mutations L31F/I/M/V, Q54H, P58S, A92K, and Y93H in the HCV NS5A region and V36A, T54A/S, Q80K/L/R, R155K/T/Q, A156S/V/T, and D168A/E/H/T/V in the HCV NS3/4A region were assessed by direct sequencing. RESULTS Overall, 86.9 % (543/625) of patients had SVR12, which was significantly higher in NS5A 93Y (wild) (88.3 %) compared with NS5A 93H at baseline (48.0 %), indicating the SVR12 rate was significantly lower in patients with 93H mutations. Additionally, 66.7 % (18/27) of patients with prior triple therapy including simeprevir (SMV) failure had virological failure. The virological failure rate of DCV/ASV therapy after SMV failure was significantly higher in those with preexisting NS3/4A 168 substitutions compared with without substitutions at baseline [84.2 % (16/19) vs. 28.6 % (2/7), p = 0.014]. The number of patients with multiple RAVs or deletions in NS5A increased from 0 to 85 % in failed patients. Alanine aminotransferase elevation was a frequent adverse event causing discontinuation of DCV/ASV therapy, although 87.5 % (14/16) patients achieved SVR12, subsequently. CONCLUSIONS History of SMV therapy and pre-existing NS5A Y93H were associated with virological failure of DCV/ASV therapy, resulting in the emergence of multiple RAVs. Patients with RAVs at baseline should be assessed to optimize future DAA therapies.
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Affiliation(s)
- Etsuko Iio
- Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho, Nagoya, Aichi, Japan
| | | | - Hiroshi Abe
- Jikei University School of Medicine Katsushika Medical Center, Tokyo, Japan
| | | | | | | | | | | | | | | | | | - Noboru Hirashima
- National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | | | | | - Izumi Hasegawa
- Japan Community Health Care Organization, Chukyo Hospital, Nagoya, Japan
| | | | - Noboru Shinkai
- Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho, Nagoya, Aichi, Japan
| | - Kei Fujiwara
- Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho, Nagoya, Aichi, Japan
| | - Shunsuke Nojiri
- Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho, Nagoya, Aichi, Japan
| | - Yasuhito Tanaka
- Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho, Nagoya, Aichi, Japan.
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33
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Lim SG, Aghemo A, Chen PJ, Dan YY, Gane E, Gani R, Gish RG, Guan R, Jia JD, Lim K, Piratvisuth T, Shah S, Shiffman ML, Tacke F, Tan SS, Tanwandee T, Win KM, Yurdaydin C. Management of hepatitis C virus infection in the Asia-Pacific region: an update. Lancet Gastroenterol Hepatol 2016; 2:52-62. [PMID: 28404015 DOI: 10.1016/s2468-1253(16)30080-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/05/2016] [Accepted: 08/10/2016] [Indexed: 12/12/2022]
Abstract
The Asia-Pacific region has disparate hepatitis C virus (HCV) epidemiology, with prevalence ranging from 0·1% to 4·7%, and a unique genotype distribution. Genotype 1b dominates in east Asia, whereas in south Asia and southeast Asia genotype 3 dominates, and in Indochina (Vietnam, Cambodia, and Laos), genotype 6 is most common. Often, availability of all-oral direct-acting antivirals (DAAs) is delayed because of differing regulatory requirements. Ideally, for genotype 1 infections, sofosbuvir plus ledipasvir, sofosbuvir plus daclatasvir, or ombitasvir, paritaprevir, and ritonavir plus dasabuvir are suitable. Asunaprevir plus daclatasvir is appropriate for compensated genotype 1b HCV if baseline NS5A mutations are absent. For genotype 3 infections, sofosbuvir plus daclatasvir for 24 weeks or sofosbuvir, daclatasvir, and ribavirin for 12 weeks are the optimal oral therapies, particularly for patients with cirrhosis and those who are treatment experienced, whereas sofosbuvir, pegylated interferon, and ribavirin for 12 weeks is an alternative regimen. For genotype 6, sofosbuvir plus pegylated interferon and ribavirin, sofosbuvir plus ledipasvir, or sofosbuvir plus ribavirin for 12 weeks are all suitable. Pegylated interferon plus ribavirin has been replaced by sofosbuvir plus pegylated interferon and ribavirin, and all-oral therapies where available, but cost and affordability remain a major issue because of the absence of universal health coverage. Few patients have been treated because of multiple barriers to accessing care. HCV in the Asia-Pacific region is challenging because of the disparate epidemiology, poor access to all-oral therapy because of availability, cost, or regulatory licensing. Until these problems are addressed, the burden of disease is likely to remain high.
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Affiliation(s)
- Seng Gee Lim
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore, Singapore.
| | - Alessio Aghemo
- UOC Gastroenterologia ed Epatologia, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Pei-Jer Chen
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University School of Medicine, Taipei, Taiwan
| | - Yock Young Dan
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore, Singapore
| | - Edward Gane
- New Zealand Liver Transplant Unit, Auckland City Hospital, Auckland, New Zealand
| | - Rino Gani
- Hepatology Division, Department of Internal Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Robert G Gish
- Stanford University Hospitals and Clinics, Palo Alto, CA, USA
| | - Richard Guan
- Department of Gastroenterology, Mount Elizabeth Medical Centre, Singapore, Singapore
| | - Ji Dong Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Xicheng, Beijing, China
| | - Kieron Lim
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore, Singapore
| | - Teerha Piratvisuth
- NKC Institute of Gastroenterology and Hepatology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Samir Shah
- Department of Hepatology, Institute of Liver Disease, HPB Surgery and Transplant, Global Hospital, Parel, Mumbai, India
| | | | - Frank Tacke
- Department of Medicine III, University Hospital Aachen, Aachen, Germany
| | - Soek Siam Tan
- Department of Hepatology, Selayang Hospital, Selangor, Malaysia
| | - Tawesak Tanwandee
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok-noi, Bangkok, Thailand
| | | | - Cihan Yurdaydin
- Department of Gastroenterology, University of Ankara Medical School, Ankara, Turkey
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Craxì A, Perno CF, Viganò M, Ceccherini-Silberstein F, Petta S. From current status to optimization of HCV treatment: Recommendations from an expert panel. Dig Liver Dis 2016; 48:995-1005. [PMID: 27388261 DOI: 10.1016/j.dld.2016.06.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/22/2016] [Accepted: 06/08/2016] [Indexed: 02/06/2023]
Abstract
Chronic hepatitis C virus (HCV) infection is a major public health problem at a global level, causing an enormous burden of hepatic and extra-hepatic morbidity and mortality. Treatment of chronic HCV (CHC) has been revolutionized in the last few years by the introduction of highly effective and well tolerated direct acting antiviral agents (DAAs) able to achieve >90% rates of sustained virological response (SVR) in many groups of patients, including those previously excluded from interferon-based regimens. For such reason interferon-free regimens are now the treatments of choice for all patients. Successful anti-HCV treatment can stop liver disease progression and can solve the HCV-related extra hepatic manifestations, eventually reducing both liver-related and overall mortality. Together with the rapidly accumulating data about the evolution of treatment landscape, different guidelines from national and international Liver Scientific Societies have been published until today. However, these recommendations may not be applied worldwide as, due to high treatment costs, most of them identify as priority groups only patients with advanced liver disease. Moreover some types of patients pose clinical management problems for which even the guidelines do not always provide useful answers. With the aim of treatment optimization by filling some of the gaps of the current guidelines and addressing the remaining unmet needs in practice, a group of Italian experts, experienced on treatment of HCV infection, met in Stresa in February 2016. The summary of all the considerations arising from this two-day meeting and the final statements are reported in this position paper.
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Affiliation(s)
- Antonio Craxì
- Department of Gastroenterology, DiBiMIS, University of Palermo, Palermo, Italy
| | - Carlo Federico Perno
- Virology Unit, Department of Experimental Medicine and Surgery, "Tor Vergata" University of Rome, Rome, Italy
| | - Mauro Viganò
- Hepatology Unit, Ospedale San Giuseppe, University of Milan, Milan, Italy
| | | | - Salvatore Petta
- Department of Gastroenterology, DiBiMIS, University of Palermo, Palermo, Italy
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35
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Frequency of Natural Resistance within NS5a Replication Complex Domain in Hepatitis C Genotypes 1a, 1b: Possible Implication of Subtype-Specific Resistance Selection in Multiple Direct Acting Antivirals Drugs Combination Treatment. Viruses 2016; 8:91. [PMID: 27023593 PMCID: PMC4848586 DOI: 10.3390/v8040091] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 03/02/2016] [Accepted: 03/22/2016] [Indexed: 12/11/2022] Open
Abstract
Different HCV subtypes may naturally harbor different resistance selection to anti-NS5a inhibitors. 2761 sequences retrieved from the Los Alamos HCV database were analyzed in the NS5a domain 1, the target of NS5a inhibitors. The NS5a resistance-associated polymorphisms (RAPs) were more frequently detected in HCV G1b compared to G1a. The prevalence of polymorphisms associated with cross-resistance to compounds in clinical use (daclatasvir, DCV, ledipasvir, LDV, ombitasvir, and OMV) or scheduled to come into clinical use in the near future (IDX719, elbasvir, and ELV) was higher in G1b compared to G1a (37/1552 (2.4%) in 1b sequences and 15/1209 (1.2%) in 1a isolates, p = 0.040). Interestingly, on the basis of the genotype-specific resistance pattern, 95 (6.1%) G1b sequences had L31M RAP to DCV/IDX719, while 6 sequences of G1a (0.5%) harbored L31M RAP, conferring resistance to DCV/LDV/IDX719/ELV (p < 0.0001). Finally, 28 (2.3%) G1a and none of G1b isolates harbored M28V RAP to OMV (p < 0.0001). In conclusion, the pattern of subtype-specific resistance selection in the naturally occurring strains may guide the treatment option in association with direct acting antivirals (DAAs) targeting different regions, particularly in patients that are difficult to cure, such as those with advanced liver disease or individuals who have failed previous DAAs.
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