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Sasaki R, Meyer K, Moriyama M, Kato N, Yokosuka O, Ray RB, Aurora R, Ray R, Kanda T. Rapid hepatitis C virus clearance by antivirals correlates with immune status of infected patients. J Med Virol 2019; 91:411-418. [PMID: 30192392 DOI: 10.1002/jmv.25310] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 09/04/2018] [Indexed: 12/12/2022]
Abstract
Altered immune parameters associated with hepatitis C virus (HCV) genotype 1b infection and their correlation with virus eradication in direct-acting antivirals (DAA)-treated patients were examined. Thirty-one HCV-infected patients were treated with DAAs for 12 weeks. Pre-DAA-treatment and post-DAA-treatment sera were analyzed for cytokines/chemokines using MILLIPLEX MAP. Serum complement level and antibody neutralization activity were measured separately. Sera from 11 spontaneously cleared HCV subjects were included for comparison. Rapid virological responders (RVR) or end-of-treatment responders (EOTR) were defined as patients with HCV RNA negative at week 4 or positive at week 4 and negative at week 12, respectively. HCV RNA eradication and a decrease in liver fibrosis-related cytokines after treatment were observed when compared with pretreatment sera from RVR and EOTR. In pretreatment sera, interferons and T-helper 1 or 2 cell-associated cytokines/chemokines were significantly higher among RVR as compared with EOTR. Furthermore, serum complement and virus neutralizing antibody levels were higher in pretreatment RVR sera. Eradication of HCV RNA by DAA decreased liver fibrosis-related cytokines. Pretreatment sera from RVR displayed an enhanced cytokine/chemokine, complement and virus neutralizing antibody response as compared with EOTR sera. Our results suggested that enhanced host immune status may play an additive role on HCV RNA clearance by DAA.
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Affiliation(s)
- Reina Sasaki
- Department of Pathology, Saint Louis University, St Louis, Missouri
- Department of Internal Medicine, Saint Louis University, St Louis, Missouri
| | - Keith Meyer
- Department of Internal Medicine, Saint Louis University, St Louis, Missouri
| | - Mitsuhiko Moriyama
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Naoya Kato
- Department of Gastroenterology and Nephrology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Osamu Yokosuka
- Department of Gastroenterology and Nephrology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Ratna B Ray
- Department of Pathology, Saint Louis University, St Louis, Missouri
- Department of Internal Medicine, Saint Louis University, St Louis, Missouri
| | - Rajeev Aurora
- Department of Molecular Microbiology and Immunology, Saint Louis University, St Louis, Missouri
| | - Ranjit Ray
- Department of Internal Medicine, Saint Louis University, St Louis, Missouri
- Department of Molecular Microbiology and Immunology, Saint Louis University, St Louis, Missouri
| | - Tatsuo Kanda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
- Department of Gastroenterology and Nephrology, Graduate School of Medicine, Chiba University, Chiba, Japan
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Provazzi PJS, Rossi LMG, Carneiro BM, Miura VC, Rosa PCR, de Carvalho LR, de Andrade STQ, Fachini RM, Grotto RMT, Silva GF, Valêncio CR, Neto PS, Cordeiro JA, Nogueira ML, Rahal P. Hierarchical assessment of host factors influencing the spontaneous resolution of hepatitis C infection. Braz J Microbiol 2018; 50:147-155. [PMID: 30637644 DOI: 10.1007/s42770-018-0008-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 04/06/2018] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Hepatitis C virus (HCV) infection is associated with chronic liver disease, resulting in cirrhosis and hepatocellular carcinoma. Approximately 20% of HCV infections are spontaneously resolved. Here, we assessed the hierarchical relevance of host factors contributing to viral clearance. METHODS DNA samples from 40 resolved infections and 40 chronic HCV patients paired by age were analyzed. Bivariate analysis was performed to rank the importance of each contributing factor in spontaneous HCV clearance. RESULTS Interestingly, 63.6% of patients with resolved infections exhibited the protective genotype CC for SNP rs12979860. Additionally, 59.3% of patients with resolved infections displayed the protective genotype TT/TT for SNP ss469415590. Moreover, a ranking of clearance factors was estimated. In order of importance, the IL28B CC genotype (OR 0.197, 95% CI 0.072-0.541) followed by the INFL4 TT/TT genotype (OR 0.237, 95% CI 0.083-0.679), and female gender (OR 0.394, 95% CI 0.159-0.977) were the main predictors for clearance of HCV infection. CONCLUSIONS HCV clearance is multifactorial and the contributing factors display a hierarchical order. Identifying all elements playing role in HCV clearance is of the most importance for HCV-related disease management. Dissecting the relevance of each contributing factor will certainly improve our understanding of the pathogenesis of HCV infection.
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Affiliation(s)
| | | | - Bruno Moreira Carneiro
- Department of Biology, São Paulo State University - UNESP, São José do Rio Preto, SP, 15054-000, Brazil
| | - Valeria Chamas Miura
- Department of Biology, São Paulo State University - UNESP, São José do Rio Preto, SP, 15054-000, Brazil
| | | | | | | | - Roberta Maria Fachini
- Department of Hepatology, São José do Rio Preto Medical School, São José do Rio Preto, SP, 15090-000, Brazil
| | | | - Giovanni Faria Silva
- Department of Internal Medicine, São Paulo State University - UNESP, Botucatu, SP, 18618-970, Brazil
| | - Carlos Roberto Valêncio
- Department of Computer Science and Statistics, São Paulo State University - UNESP, São José do Rio Preto, SP, 15054-000, Brazil
| | - Paulo Scarpelini Neto
- Department of Computer Science and Statistics, São Paulo State University - UNESP, São José do Rio Preto, SP, 15054-000, Brazil
| | - José Antonio Cordeiro
- Department of Computer Science and Statistics, São Paulo State University - UNESP, São José do Rio Preto, SP, 15054-000, Brazil
| | - Mauricio Lacerda Nogueira
- Laboratory of Virology, São José do Rio Preto Medical School, São José do Rio Preto, SP, 15090-000, Brazil
| | - Paula Rahal
- Department of Biology, São Paulo State University - UNESP, São José do Rio Preto, SP, 15054-000, Brazil.
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Huang P, Yao Y, Yue M, Tian T, Chen H, Chen M, Wang J, Zhang Y, Yu R. Genetic variants in interferon-λ 4 influences HCV clearance in Chinese Han population. Sci Rep 2017; 7:42408. [PMID: 28186161 PMCID: PMC5301237 DOI: 10.1038/srep42408] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/09/2017] [Indexed: 12/16/2022] Open
Abstract
Recent many studies indicated a novel dinucleotide variant in ss469415590 (TT vs. ΔG) of interferon-λ 4 (IFNL4) gene strongly associated with hepatitis C virus clearance. To evaluate the impact and clinical usefulness of IFNL4 ss469415590 genotype on predicting both spontaneous HCV clearance and response to therapy in Chinese population, we genotyped 795 chronic HCV carriers, 460 subjects with HCV natural clearance and 362 patients with pegylated interferon-α and ribavirin (PEG IFN-α/RBV) treatment. IFNL4 ss469415590 variant genotypes significantly decreased host HCV clearance, both spontaneous (dominant model: OR = 0.50, 95% CI = 0.36-0.71) and IFN-α induced (dominant model: OR = 0.32, 95% CI = 0.18-0.56). Multivariate stepwise analysis indicated that ss469415590, rs12979860, the level of baseline HCV RNA and platelet were as independent predictors for sustained virological response (SVR). But the area under the ROC curve (AUC) was only 0.58 for ss469415590, and it was elevated to 0.71 by adding rs12979860, baseline HCV RNA and platelet in the prediction model of SVR. Therefore, these findings underscore that although genetic factors of host and pathogen were commonly important during HCV clearance, ss469415590 may be also a strongly predictive marker in the Chinese population.
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Affiliation(s)
- Peng Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Yinan Yao
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Ming Yue
- Department of Infectious Diseases, the People’s Hospital of Jiangsu Province, Nanjing 210029, China
| | - Ting Tian
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Hongbo Chen
- Department of Infectious Diseases, the Jurong Peoples’ Hospital, Jurong 212400, China
| | - Mingzhu Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Jie Wang
- School of Nursing, Nanjing Medical University, Nanjing 211166, China
| | - Yun Zhang
- Huadong Research Institute for Medicine and Biotechnics, No. 293 Zhongshan East Road, Nanjing 210002, Jiangsu, China
| | - Rongbin Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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Pouryasin M, Sharafi H, Behnava B, Alavian SM, Keshvari M, Pouryasin A. A Simple PCR-RFLP Method for Genotyping of IFNL4 rs368234815 Polymorphism in Patients With Chronic Hepatitis C. Lab Med 2017; 48:51-56. [PMID: 28057801 DOI: 10.1093/labmed/lmw060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The IFNL4 rs368234815 polymorphism plays a prominent role in spontaneous and treatment-induced clearance of hepatitis C virus (HCV) infection. This study aimed to develop a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method for assessment of rs368234815 polymorphism. METHODS We genotyped the rs368234815 polymorphism in 87 patients with chronic HCV by PCR sequencing and PCR-RFLP methods, simultaneously. RESULTS Genotyping of IFNL4 rs368234815 via PCR-RFLP was concordant with PCR sequencing in all 87 individuals (100%). The analytical sensitivity and specificity of the developed PCR-RFLP method for genotyping of rs368234815 polymorphism were each 100%. Among these patients with chronic HCV, the frequency of rs368234815 TT/TT, TT/ΔG, and ΔG/ΔG were 44.8%, 37.9%, and 17.3%, respectively. CONCLUSIONS The PCR-RFLP method that we developed is accurate, rapid, inexpensive, and easy to perform for genotyping of the IFNL4 rs368234815 polymorphism. This method can be used for clinical and research work.
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Affiliation(s)
- Mohammad Pouryasin
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Armin Pathobiology Laboratory, Tehran, Iran
| | - Heidar Sharafi
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Armin Pathobiology Laboratory, Tehran, Iran.,Middle East Liver Diseases (MELD) Center, Tehran, Iran
| | - Bita Behnava
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Middle East Liver Diseases (MELD) Center, Tehran, Iran
| | - Seyed Moayed Alavian
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Middle East Liver Diseases (MELD) Center, Tehran, Iran
| | - Maryam Keshvari
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Ali Pouryasin
- Armin Pathobiology Laboratory, Tehran, Iran, .,Department of Biology, Arsanjan Branch, Islamic Azad University, Arsanjan, Iran
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Gonzalez-Aldaco K, Rebello Pinho JR, Roman S, Gleyzer K, Fierro NA, Oyakawa L, Ramos-Lopez O, Ferraz Santana RA, Sitnik R, Panduro A. Association with Spontaneous Hepatitis C Viral Clearance and Genetic Differentiation of IL28B/IFNL4 Haplotypes in Populations from Mexico. PLoS One 2016; 11:e0146258. [PMID: 26741362 PMCID: PMC4704808 DOI: 10.1371/journal.pone.0146258] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 12/15/2015] [Indexed: 12/13/2022] Open
Abstract
AIM To analyze the genetic heterogeneity of the Amerindian and admixed population (Mestizos) based on the IL28B (rs12979860, rs8099917) and IFNL4 (rs368234815) haplotypes, and their association with spontaneous clearance (SC) and liver damage in patients with hepatitis C infection from West Mexico. METHODS A total of 711 subjects from West Mexico (181 Amerindians and 530 Mestizos) were studied for the prevalence of IL28B (rs12979860C/T, rs8099917G/T) and IFNL4 (rs368234815∆G/TT) genotypes. A case-control study was performed in 234 treatment-naïve HCV Mestizos (149 chronic hepatitis C and 85 with SC) for the association of haplotypes with SC and liver damage. A real-time PCR assay was used for genotyping, and transitional elastography staged liver damage. RESULTS Significant Fst-values indicated differentiation between the studied populations. The frequencies of the protective C, T, TT alleles were significantly lower in the Amerindians than in Mestizos (p<0.05). The r2 measure of linkage disequilibrium was significant for all variants and the T/G/ΔG risk haplotype predominated in Amerindians and secondly in Mestizos. The protective C/T/TT haplotype was associated with SC (OR = 0.46, 95% IC 0.22-0.95, p = 0.03) and less liver damage (OR = 0.32, 95% IC 0.10-0.97, p = 0.04) in chronic patients. The Structure software analysis demonstrated no significant differences in ancestry among SC and chronic patients. CONCLUSIONS West Mexico's population is genetically heterogeneous at the IL28B/IFNL4 polymorphisms. The T/G/ΔG high-risk haplotype predominated in Amerindians and the beneficial alternative haplotype in Mestizos. The C/T/TT haplotype was associated with SC and less liver damage in chronically infected Mestizo patients.
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Affiliation(s)
- Karina Gonzalez-Aldaco
- Department of Molecular Biology in Medicine, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara, Jalisco Mexico and Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - João R. Rebello Pinho
- Albert Einstein Medicina Diagnóstica, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
- Laboratorio de Gastroenterologia e Hepatologia Tropical. Instituto de Medicina Tropical, Departamento de Gastroenterologia, Faculdade da Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Sonia Roman
- Department of Molecular Biology in Medicine, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara, Jalisco Mexico and Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Ketti Gleyzer
- Departamento de Patologia Clínica e Anatomia Patológica, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Nora A. Fierro
- Department of Molecular Biology in Medicine, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara, Jalisco Mexico and Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Leticia Oyakawa
- Albert Einstein Medicina Diagnóstica, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Omar Ramos-Lopez
- Department of Molecular Biology in Medicine, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara, Jalisco Mexico and Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Rubia A. Ferraz Santana
- Albert Einstein Medicina Diagnóstica, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Roberta Sitnik
- Albert Einstein Medicina Diagnóstica, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Arturo Panduro
- Department of Molecular Biology in Medicine, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara, Jalisco Mexico and Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
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Kanda T, Nakamoto S, Sasaki R, Nakamura M, Yasui S, Haga Y, Ogasawara S, Tawada A, Arai M, Mikami S, Imazeki F, Yokosuka O. Sustained Virologic Response at 24 Weeks after the End of Treatment Is a Better Predictor for Treatment Outcome in Real-World HCV-Infected Patients Treated by HCV NS3/4A Protease Inhibitors with Peginterferon plus Ribavirin. Int J Med Sci 2016; 13:310-5. [PMID: 27076789 PMCID: PMC4829545 DOI: 10.7150/ijms.14953] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 03/15/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Direct-acting antiviral agents against HCV with or without peginterferon plus ribavirin result in higher eradication rates of HCV and shorter treatment duration. We examined which is better for predicting persistent virologic response, the assessment of serum HCV RNA at 12 or 24 weeks after the end of treatment for predicting sustained virologic response (SVR12 or SVR24, respectively) in patients treated by HCV NS3/4A protease inhibitors with peginterferon plus ribavirin. METHODS In all, 149 Japanese patients infected with HCV genotype 1b treated by peginterferon plus ribavirin with telaprevir or simeprevir were retrospectively analyzed: 59 and 90 patients were treated with telaprevir- and simeprevir-including regimens, respectively. HCV RNA was measured by TaqMan HCV Test, version 2.0, real-time PCR assay. SVR12 or SVR24, respectively, was defined as HCV RNA negativity at 12 or 24 weeks after ending treatment. RESULTS Total SVR rates were 78.0% and 66.7% in the telaprevir and simeprevir groups, respectively. In the telaprevir group, all 46 patients with SVR12 finally achieved SVR24. In the simeprevir group, 60 (93.8%) of the total 64 patients with SVR12 achieved SVR24, with the other 4 patients all being previous-treatment relapsers. CONCLUSIONS SVR12 was suitable for predicting persistent virologic response in almost all cases. In simeprevir-including regimens, SVR12 could not always predict persistent virologic response. Clinicians should use SVR24 for predicting treatment outcome in the use of HCV NS3/4A protease inhibitors with peginterferon plus ribavirin for any group of real-world patients chronically infected with HCV.
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Affiliation(s)
- Tatsuo Kanda
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Shingo Nakamoto
- 2. Department of Molecular Virology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Reina Sasaki
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masato Nakamura
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Shin Yasui
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yuki Haga
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Sadahisa Ogasawara
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Akinobu Tawada
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Makoto Arai
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | | | - Fumio Imazeki
- 4. Safety and Health Organization, Chiba University, Chiba, Japan
| | - Osamu Yokosuka
- 1. Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
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Wu Q, Wang C, Chen EQ, Tang H, Li ZZ, Lei XZ. Interferon Lambda 4 Polymorphism Predicts Sustained Viral Response in Hepatitis C Virus Patients Irrespective of Hepatitis C Virus Genotypes, Ethnicity or Treatment Regimen: Results From a Meta-Analysis. HEPATITIS MONTHLY 2015; 15:e32707. [PMID: 26977165 PMCID: PMC4774144 DOI: 10.5812/hepatmon.32707] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 10/30/2015] [Accepted: 11/01/2015] [Indexed: 02/05/2023]
Abstract
CONTEXT There is growing evidence that interferon lambda 4 (IFNL4) polymorphism is related to sustained virological response (SVR) in hepatitis C virus (HCV) infection. We analyzed the relationship between IFNL4 (rs368234815) polymorphism and SVR in dual- and triple- therapy in HCV genotype 1, 2, 3 and 4 infected Asian, Caucasian and African patients. EVIDENCE ACQUISITION We performed a systematic search of PubMed, Medline, Embase, EBSCO and Web of Science databases up to July 2015. Data of qualified studies were analyzed using the meta-analysis method in Stata 12.0 software. RESULTS Ten studies involving 4765 patients were included in the analysis. Of overall studies, SVR was more frequent in TT/TT genotype compared to TT /ΔG+ΔG /ΔG (OR = 4.439, 95% CI: 3.410 - 5.778). Genotype stratification analyses revealed rs368234815 TT/ TT was associated with higher SVR in G1, G2/3 and G4 HCV patients (ORG1 = 4.661, 95% CI: 3.937 - 5.518; ORG2/3 = 1.896, 95% CI: 1.265 - 2.841; ORG4 = 6.074; 95% CI: 3.129 - 11.788). Ethnicity stratification analyses of G1 patients showed that SVR was more frequent with TT/ TT genotype in Asians (OR= 8.245, 95% CI: 5.475 - 12.416), Caucasians (OR = 4.166, 95% CI: 3.441 - 5.042) and Africans (SVR: 37.5% vs 17.0%, P = 0.017). Moreover, similar results presented in therapy stratification analyses both in patients with dual-therapy (OR = 3.857; 95% CI: 3.288 - 4.524) or triple-therapy (OR = 8.119; 95% CI: 4.942 - 13.340). CONCLUSIONS Favorable IFNL4 rs368234815 genotype is a strong predictor of SVR in HCV patients, irrespective of HCV genotypes, ethnicity or treatment regimen. Thus, detection for IFNL4 rs368234815 polymorphism may be beneficial to guide the clinician in the individualization of therapy and design.
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Affiliation(s)
- Qin Wu
- Department of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Cong Wang
- Department of Nursing, West China Hospital, Sichuan University, Chengdu, China
| | - En Qiang Chen
- Department of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Tang
- Department of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Zhen Zhen Li
- West China School of Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Xue Zhong Lei
- Department of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
- Corresponding Author: Xue Zhong Lei, Department of Infectious Diseases, West China Hospital, Sichuan University, P. O. Box: 610041, Chengdu, China. Tel: +86-2885423346, Fax: +86-2885423052, E-mail:
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Kanda T, Nakamoto S, Yokosuka O. Is the use of IL28B genotype justified in the era of interferon-free treatments for hepatitis C? World J Virol 2015; 4:178-184. [PMID: 26279979 PMCID: PMC4534809 DOI: 10.5501/wjv.v4.i3.178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 06/25/2015] [Accepted: 07/23/2015] [Indexed: 02/05/2023] Open
Abstract
In 2009, several groups reported that interleukin-28B (IL28B) genotypes are associated with the response to peginterferon plus ribavirin therapy for chronic hepatitis C virus (HCV) infection in a genome-wide association study, although the mechanism of this association is not yet well understood. However, in recent years, tremendous progress has been made in the treatment of HCV infection. In Japan, some patients infected with HCV have the IL28B major genotype, which may indicate a favorable response to interferon-including regimens; however, certain patients within this group are also interferon-intolerant or ineligible. In Japan, interferon-free 24-wk regimens of asunaprevir and daclatasvir are now available for HCV genotype 1b-infected patients who are interferon-intolerant or ineligible or previous treatment null-responders. The treatment response to interferon-free regimens appears better, regardless of IL28B genotype. Maybe other interferon-free regimens will widely be available soon. In conclusion, although some HCV-infected individuals have IL28B favorable alleles, importance of IL28B will be reduced with availability of oral interferon free regimen.
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