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Mangone G, Serranti D, Bartolini E, Vigna V, Mastrangelo G, Ricci S, Trapani S, Azzari C, Resti M, Indolfi G. SNPs of the IFNL favour spontaneous clearance of HCV infection in children. Pediatr Res 2022; 91:1516-1521. [PMID: 33966053 DOI: 10.1038/s41390-021-01557-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 03/08/2021] [Accepted: 03/19/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Both spontaneous and treatment-induced clearance of hepatitis C virus (HCV) in adults have been associated with genetic polymorphisms in the interferon-λ genes. The aim of the present study was to confirm the association between the rs12979860 and evaluate the association between the rs368234815 and the rs4803217 single-nucleotide polymorphisms (SNPs) of the interferon-λ genes and the outcome of the infection in children. METHODS Alleles and genotypes frequencies of 32 children, who presented spontaneous clearance of the virus and 135 children, with viral persistence were compared with ethnically matched controls obtained from the 1000 Genomes Project and the International HapMap Project databases. RESULTS The frequencies of the C/C genotype of rs12979860, the TT/TT of the rs368234815 and the A/C of the rs4803217 were higher in the clearance group than in children with viral persistence (C/C versus T/T + C/T odds ratio (OR): 2.6; 90% confidence intervals (CI): 1.3-5; p = 0.01; TT/TT versus ΔG/TT + ΔG/ΔG OR: 2.8; 90% CI: 1.4-5.5; p = 0.01; and A/A versus A/C OR: 8.3; 90% CI: 1.5-45.9; p = 0.017, respectively) and with the ethnically matched controls. CONCLUSIONS The rs12979860, the rs368234815 and the rs4803217 SNPs are associated with spontaneous clearance of HCV in children. IMPACT Innate immune system response has a key role in the outcome of vertically acquired HCV infection in children. The rs12979860, the rs368234815 and the rs4803217 SNPs are associated with spontaneous clearance of HCV in children. Interferons-λ activate the Janus kinase-Stat pathway, which in turn induces several interferon-stimulated genes, leading to suppression of HCV replication both in vivo and in vitro.
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Affiliation(s)
- Giusi Mangone
- Immunology Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Daniele Serranti
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Elisa Bartolini
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Veronica Vigna
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Greta Mastrangelo
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy.,Department NEUROFARBA, University of Florence, Firenze, Italy
| | - Silvia Ricci
- Department of Health Sciences, University of Florence, Firenze, Italy
| | - Sandra Trapani
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy.,Department of Health Sciences, University of Florence, Firenze, Italy
| | - Chiara Azzari
- Immunology Unit, Meyer Children's University Hospital of Florence, Firenze, Italy.,Department of Health Sciences, University of Florence, Firenze, Italy
| | - Massimo Resti
- Department of Health Sciences, University of Florence, Firenze, Italy
| | - Giuseppe Indolfi
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy. .,Department NEUROFARBA, University of Florence, Firenze, Italy.
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Mylopoulou T, Papadopoulos V, Kassela K, Karakasiliotis I, Souvalidou F, Mimidis P, Veletza S, Mavromara P, Mimidis K. Relationship between antibodies to hepatitis C virus core+1 protein and treatment outcome. Ann Gastroenterol 2018; 31:593-597. [PMID: 30174396 PMCID: PMC6102464 DOI: 10.20524/aog.2018.0290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 06/01/2018] [Indexed: 01/02/2023] Open
Abstract
Background It has been suggested that hepatitis C virus (HCV) core+1 protein plays a crucial role in the viral life cycle, potentially affecting liver cirrhosis and the development of hepatocellular carcinoma. Methods To investigate its relationship with the outcome of HCV standard combination therapy with peginterferon-α plus ribavirin, we screened 139 consecutive HCV patients (119 with chronic HCV infection and 20 who spontaneously cleared HCV) for the presence of anti-core+1 antibodies (Abs). In addition, liver fibrosis was determined by FibroScan in all but one patients. Results Twenty-nine patients were cirrhotic (stiffness >12.5 kPa, F4 METAVIR), all of them with mild liver cirrhosis (Child-Pugh score A). Eighty-six of 139 patients were treatment-experienced with standard combination therapy. Fifty of them had achieved a sustained virological response, while 36 were non-responders. The prevalence of anti-core+1 Abs in patients with chronic HCV infection was 22.69% (27/119 patients): 18% (9/50 patients) in responders and 36.11% (13/36 patients) in non-responders (P=0.050). Five (17.24%) of the 29 cirrhotic patients and 22 (24.72%) of the 89 non-cirrhotic patients were positive for anti-core+1 Abs (P=0.405). Furthermore, the presence of anti-core+1 Abs correlated with the poor response interleukin (IL) 28B genotype TT (P=0.040). No correlation between spontaneous clearance and anti-core+1 Abs was observed (P=0.088). Conclusion The presence of anti-core+1 Abs might be correlated with the poor response IL28B TT genotype and may negatively affect the outcome of standard combination treatments in HCV patients, suggesting that core+1 may play a biological role in the course of HCV infection.
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Affiliation(s)
- Theodora Mylopoulou
- First Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis (Theodora Mylopoulou, Konstantinos Mimidis), Greece
| | | | - Katerina Kassela
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, Athens (Katerina Kassela, Penelope Mavromara), Greece
| | - Ioannis Karakasiliotis
- Laboratory of Medical Biology, Department of Medicine, Democritus University of Thrace, Alexandroupolis (Ioannis Karakasiliotis, Stavroula Veletza), Greece
| | - Fani Souvalidou
- Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis (Fani Souvalidou, Panagiotis Mimidis, Penelope Mavromara), Greece
| | - Panagiotis Mimidis
- Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis (Fani Souvalidou, Panagiotis Mimidis, Penelope Mavromara), Greece
| | - Stavroula Veletza
- Laboratory of Medical Biology, Department of Medicine, Democritus University of Thrace, Alexandroupolis (Ioannis Karakasiliotis, Stavroula Veletza), Greece
| | - Penelope Mavromara
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, Athens (Katerina Kassela, Penelope Mavromara), Greece.,Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis (Fani Souvalidou, Panagiotis Mimidis, Penelope Mavromara), Greece
| | - Konstantinos Mimidis
- First Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis (Theodora Mylopoulou, Konstantinos Mimidis), Greece
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3
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El-Bendary M, Neamatallah M, Elalfy H, Besheer T, El-Setouhy M, Kasim N, Abou El-Khier NT, Kamel E, Eladl AH, El-Waseef A, Abdel-Aziz AAF, Esmat G. Association of interferon gamma gene polymorphism and susceptibility to hepatitis C virus infection in Egyptian patients: A multicenter, family-based study. JGH OPEN 2017; 1:140-147. [PMID: 30483551 PMCID: PMC6207041 DOI: 10.1002/jgh3.12024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 09/17/2017] [Accepted: 10/03/2017] [Indexed: 12/17/2022]
Abstract
Background and Aim Polymorphisms in some genes may influence the persistence of hepatitis C virus (HCV) infection, clinical outcome, HCV replication, and liver damage. This study was conducted to investigate the role of the interferon gamma (IFN‐γ) gene at (+874 T/A, −764 G/C, −179 C/A) single‐nucleotide polymorphisms (SNPs) and its receptor (IFN‐γR2) at (rs 2786067 A/C) SNP in the susceptibility of Egyptian families to HCV infection with high‐resolution techniques. Methods In total, 517 Egyptian families, with 2246 subjects, were recruited to this study from the Upper and Lower Egypt governorates and were classified into three groups: 1034 patients with chronic hepatitis C virus, 108 subjects with spontaneous virus clearance (SVC), and 1104 subjects as a healthy control group. All subjects were genotyped for (+874 T/A, rs2430561, −764 G/C, rs2069707, −179 C/A, rs2069709, and rs 27860067, A/C) SNPs of the IFN‐γ gene using the allelic discrimination real‐time polymerase chain reaction technique and were confirmed using sequence‐based typing. Results The carriage of T allele of (+874) IFN‐γ is a risky allele and was significantly higher in chronic hepatitis C more than other two groups (odds ratio [OR]: 2.6646, P < 0.0002). On the other hand, the C allele of (−764, rs2069707) is a protective allele and was higher in SVC than the other two groups (OR: 0.2709, P < 0.0001). However, both (−179 C/A, rs 2069709) and (rs 27860067, A/C) SNPs are not polymorphic enough to be studied in the Egyptian population. Conclusions HCV infection is associated with the T allele of (+874 rs2430561), while SVC of HCV is associated with the C allele of (−764, rs2069707) of the IFN‐γ gene.
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Affiliation(s)
- Mahmoud El-Bendary
- Tropical Medicine and Hepatology Department, Mansoura Faculty of Medicine Mansoura University Mansoura Egypt
| | - Mustafa Neamatallah
- Medical Biochemistry Department, Mansoura Faculty of Medicine Mansoura University Mansoura Egypt
| | - Hatem Elalfy
- Tropical Medicine and Hepatology Department, Mansoura Faculty of Medicine Mansoura University Mansoura Egypt
| | - Tarek Besheer
- Tropical Medicine and Hepatology Department, Mansoura Faculty of Medicine Mansoura University Mansoura Egypt
| | - Maged El-Setouhy
- Department of Community, Environmental and Occupational Medicine, Ain-Shams Faculty of Medicine Ain-Shams University Cairo Egypt.,Substance Abuse Research Center (SARC) Jazan University Jazan Kingdom of Saudi Arabia
| | - Nihal Kasim
- Biochemistry Department, Faculty of Science Mansoura University Mansoura Egypt
| | - Noha T Abou El-Khier
- Medical Microbiology and Immunology Department, Faculty of Medicine Mansoura University Mansoura Egypt
| | - Emily Kamel
- Public Health and Preventive Medicine Department, Mansoura Faculty of Medicine Mansoura University Mansoura Egypt
| | - Abdel-Hamid Eladl
- Internal Medicine Department, Alazhar Faculty of Medicine Assiut University Assiut Egypt
| | - Ahmad El-Waseef
- Biochemistry Department, Faculty of Science Mansoura University Mansoura Egypt
| | | | - Gamal Esmat
- Tropical Medicine and Hepatology Department, Cairo Faculty of Medicine Cairo University Giza Egypt
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4
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Bioinformatics in translational drug discovery. Biosci Rep 2017; 37:BSR20160180. [PMID: 28487472 PMCID: PMC6448364 DOI: 10.1042/bsr20160180] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 05/04/2017] [Accepted: 05/08/2017] [Indexed: 12/31/2022] Open
Abstract
Bioinformatics approaches are becoming ever more essential in translational drug discovery both in academia and within the pharmaceutical industry. Computational exploitation of the increasing volumes of data generated during all phases of drug discovery is enabling key challenges of the process to be addressed. Here, we highlight some of the areas in which bioinformatics resources and methods are being developed to support the drug discovery pipeline. These include the creation of large data warehouses, bioinformatics algorithms to analyse 'big data' that identify novel drug targets and/or biomarkers, programs to assess the tractability of targets, and prediction of repositioning opportunities that use licensed drugs to treat additional indications.
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5
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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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Kishida Y, Imaizumi N, Tanimura H, Kashiwamura S, Kashiwagi T. A Protease Inhibitor with Induction Therapy with Natural Interferon-β in Patients with HCV Genotype 1b Infection. Int J Mol Sci 2016; 17:350. [PMID: 27005617 PMCID: PMC4813211 DOI: 10.3390/ijms17030350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/19/2016] [Accepted: 02/24/2016] [Indexed: 12/14/2022] Open
Abstract
The restoration of innate immune responses has potential as a novel therapeutic strategy for chronic hepatitis C (CHC). We compared the efficacy and safety of induction therapy (IT) with natural interferon-β (n-IFN-β) followed by pegylated-IFN-α/ribavirin (PR) alone (group A, n = 30) and IT with a protease inhibitor (PI) (simeprevir or vaniprevir)/PR (group B, n = 13) in CHC patients with genotype 1b and high viral loads. During IT with nIFN-β, virologic response rates in group A and group B were 10% and 8% (p = 0.6792) at week 4, 30% and 16% (p = 0.6989) at week 12 and 47% and 20% (p = 0.0887) at week 24 respectively. During and after the treatment with PR alone or PI/PR, virologic response rates in groups A and B were 50% and 82% (p = 0.01535) at week 4, 53% and 91% (p = 0.006745) at week 8, 57% and 91% (p = 0.001126) at week 12, 57% and 100% (p < 0.001845) at the end of the treatment and 57% and 80% (p < 0.005166) after treatment cessation. IT with PI/PR linked to the restoration of innate immune response was tolerated well, overcame virological breakthrough, enhanced early virologic responses, and resulted in a sustained virologic response in difficult-to-treat CHC patients. IT with PI/PR is beneficial for treating difficult-to-treat CHC patients.
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Affiliation(s)
- Yutaka Kishida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Osaka Kaisei Hospital, Osaka City, Osaka 532-0003, Japan.
| | - Naohiko Imaizumi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Osaka Kaisei Hospital, Osaka City, Osaka 532-0003, Japan.
| | - Hirohisa Tanimura
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Osaka Kaisei Hospital, Osaka City, Osaka 532-0003, Japan.
| | - Shinichiro Kashiwamura
- Laboratory of Host Defenses Institute for Advanced Medical Science, Hyogo College of Medicine, Nishinomiya City, Hyogo 668-8501, Japan.
| | - Toru Kashiwagi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Osaka Hospital of Japan Community Healthcare Organization, Osaka city, Osaka 553-0003, Japan.
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7
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Moqueet N, Infante-Rivard C, Platt RW, Young J, Cooper C, Hull M, Walmsley S, Klein MB. Favourable IFNL3 genotypes are associated with spontaneous clearance and are differentially distributed in Aboriginals in Canadian HIV-hepatitis C co-infected individuals. Int J Mol Sci 2015; 16:6496-512. [PMID: 25803108 PMCID: PMC4394544 DOI: 10.3390/ijms16036496] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/13/2015] [Accepted: 03/13/2015] [Indexed: 12/13/2022] Open
Abstract
Canadian Aboriginals are reported to clear Hepatitis C (HCV) more frequently. We tested the association of spontaneous clearance and three single nucleotide polymorphisms (SNPs) near the Interferon-lambda 3 (IFNL3) gene (rs12979860, rs8099917, functional variant rs8103142) and compared the SNP frequencies between HIV-HCV co-infected whites and Aboriginals from the Canadian Co-infection Cohort. HCV treatment-naïve individuals with at least two HCV RNA tests were included (n = 538). A spontaneous clearance case was defined as someone with two consecutive HCV RNA-negative tests, at least six months apart. Data were analyzed using Cox proportional hazards adjusted for sex and ethnicity. Advantageous variants and haplotypes were more common in Aboriginals than Caucasians: 57% vs. 46% had the rs12979860 CC genotype, respectively; 58% vs. 48%, rs8103142 TT; 74% vs. 67%, the rs12979860 C allele; and 67% vs. 64% the TCT haplotype with three favourable alleles. The adjusted Hazard Ratios (95% CI) for spontaneous clearance were: rs12979860: 3.80 (2.20, 6.54); rs8099917: 5.14 (2.46, 10.72); and rs8103142: 4.36 (2.49, 7.62). Even after adjusting for rs12979860, Aboriginals and females cleared HCV more often, HR (95% CI) = 1.53 (0.89, 2.61) and 1.42 (0.79, 2.53), respectively. Our results suggest that favourable IFNL3 genotypes are more common among Aboriginals than Caucasians, and may partly explain the higher HCV clearance rates seen among Aboriginals.
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Affiliation(s)
- Nasheed Moqueet
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC H3A 1A2, Canada.
| | - Claire Infante-Rivard
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC H3A 1A2, Canada.
| | - Robert W Platt
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC H3A 1A2, Canada.
| | - Jim Young
- Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital Basel, Basel 4031, Switzerland.
- Department of Medicine, Division of Infectious Diseases/Chronic Viral Illness Service, Royal Victoria Hospital, McGill University Health Centre, 3650 Saint-Urbain Street, Montreal, QC H2X 2P4, Canada.
| | - Curtis Cooper
- The Ottawa Hospital-Research Institute, Ottawa, ON K1Y 4E9, Canada.
| | - Mark Hull
- BC Centre for Excellence in HIV/AIDS, Vancouver, BC V6Z 1Y6, Canada.
| | - Sharon Walmsley
- Toronto General Research Institute, University Health Network, University of Toronto, Toronto, ON M5G 2M9, Canada.
| | - Marina B Klein
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC H3A 1A2, Canada.
- Department of Medicine, Division of Infectious Diseases/Chronic Viral Illness Service, Royal Victoria Hospital, McGill University Health Centre, 3650 Saint-Urbain Street, Montreal, QC H2X 2P4, Canada.
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8
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Toniutto P, Bitetto D, Falleti E, Vadalà S, Cmet S, Cussigh A, Bulajic M, Zilli M, Fabris C. Biliary strictures after liver transplantation: role of interleukin 28B genotypes in cyclosporine treated. Int J Surg 2014; 12:1082-7. [PMID: 25219480 DOI: 10.1016/j.ijsu.2014.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 09/03/2014] [Indexed: 12/16/2022]
Abstract
INTRODUCTION The role of Interleukin 28B (IL-28B) genetic polymorphisms in influencing the occurrence of biliary complications after liver transplantation has never been evaluated. This study aimed to investigate whether IL-28B rs12979860C/T polymorphisms associate with the occurrence of biliary complications after liver transplantation and if these complications may influence survival. METHODS One hundred seventy one recipients (133 males) who underwent liver transplantation were recruited. To confirm the mechanical etiology of cholestasis, endoscopic cholangio pancreatography, percutaneous and/or trans-Kehr cholangiography or cholangio magnetic resonance were performed. Two main clinical pictures were identified: biliary strictures and biliary leakage. Immunosuppressive therapy was based on cyclosporine (N = 54) or tacrolimus (N = 117), in association with steroids during the first month after operation. IL-28B rs12979860C/T genotypes were detected by means of polymerase chain reaction. RESULTS Forty patients (23.4%) presented anastomotic strictures, 7 (4.1%) non-anastomotic strictures, 10 (5.8%) leakage, 8 (4.7%) leakage plus anastomotic strictures. IL-28B rs12979860C/C genotype in association with cyclosporin was found to be an independent predictor of anastomotic strictures occurrence (p = 0.008). A significant difference in 5 years survival was observed between patients with viral etiology of liver disease experiencing either anastomotic or non-anastomotic strictures (16/23) and the remaining patients (104/112, p = 0.001). CONCLUSIONS In recipients carrying rs12979860 IL-28B C/C genotype the use of cyclosporine seems to contribute to enhance the probability of developing biliary complications which in hepatitis B and C positives appear to reduce patient survival. If confirmed in larger studies the use of cyclosporine in these patients could be revised.
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Affiliation(s)
- Pierluigi Toniutto
- Department of Medical Sciences, Experimental and Clinical, Medical Liver Transplantation Section, Internal Medicine, University of Udine, Udine, Italy.
| | - Davide Bitetto
- Department of Medical Sciences, Experimental and Clinical, Medical Liver Transplantation Section, Internal Medicine, University of Udine, Udine, Italy
| | - Edmondo Falleti
- Department of Medical Sciences, Experimental and Clinical, Medical Liver Transplantation Section, Internal Medicine, University of Udine, Udine, Italy
| | - Salvatore Vadalà
- Department of Surgery, Gastroenterology Unit, Azienda Ospedaliero-Universitaria, Udine, Italy
| | - Sara Cmet
- Department of Medical Sciences, Experimental and Clinical, Medical Liver Transplantation Section, Internal Medicine, University of Udine, Udine, Italy
| | - Annarosa Cussigh
- Department of Medical Sciences, Experimental and Clinical, Medical Liver Transplantation Section, Internal Medicine, University of Udine, Udine, Italy
| | - Milutin Bulajic
- Department of Surgery, Gastroenterology Unit, Azienda Ospedaliero-Universitaria, Udine, Italy
| | - Maurizio Zilli
- Department of Surgery, Gastroenterology Unit, Azienda Ospedaliero-Universitaria, Udine, Italy
| | - Carlo Fabris
- Department of Medical Sciences, Experimental and Clinical, Medical Liver Transplantation Section, Internal Medicine, University of Udine, Udine, Italy
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Indolfi G, Azzari C, Resti M. Polymorphisms in the IFNL3/IL28B gene and hepatitis C: from adults to children. World J Gastroenterol 2014; 20:9245-52. [PMID: 25071317 PMCID: PMC4110554 DOI: 10.3748/wjg.v20.i28.9245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 02/24/2014] [Accepted: 05/23/2014] [Indexed: 02/06/2023] Open
Abstract
The purpose of the present review is to summarise the current knowledge on the association between single nucleotide polymorphisms (SNPs) in the interferon L3 (IFNL3) gene and hepatitis C virus (HCV) infection in children. Many studies in adults have demonstrated that genetic variation in IFNL3 is a strong predictor of the virological response in treatment-naive patients with HCV genotype 1 who were treated with Pegylated-IFN-α and ribavirin. Genetic variation in IFNL3 is also associated with the spontaneous clearance of HCV. Thus far, few paediatric studies have explored the association between variations in the IFNL3 gene and either spontaneous or treatment-induced clearance of HCV. The CC genotype of the rs12979860 SNP is associated with the spontaneous clearance of HCV in children independently of HCV genotype. Four paediatric studies have shown that both the CC genotype of the rs12979860 SNP and the TT genotype of the rs8099917 SNP are associated with the treatment-induced (IFN monotherapy and Pegylated-IFN-α and ribavirin association) clearance of HCV, while the rs12980275 SNP did not affect the virological response. The possible role of IFNL3 gene variation as a pre-treatment and on-treatment predictor of virological response in children is highly attractive but still undetermined. Further paediatric studies are needed to evaluate if testing for SNPs in IFNL3, either alone or together with other predictors of response to treatment, could be used to direct treatment strategies, including an avoidance of unnecessary protease inhibitor therapy and the duration of treatment.
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Nevot M, Boesecke C, Parera M, Andrés C, Franco S, Revollo B, Ingiliz P, Tural C, Clotet B, Rockstroh JK, Martinez MA. Hepatitis C virus NS3/4A quasispecies diversity in acute hepatitis C infection in HIV-1 co-infected patients. J Viral Hepat 2014; 21:e19-28. [PMID: 24674023 DOI: 10.1111/jvh.12254] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The growing number of cases of acute hepatitis C (AHC) infections among human immunodeficiency virus type 1 (HIV-1)-positive men who have sex with men (MSM) in the last 10 years has promoted the search for predictors of AHC clearance as well as for epidemiological networks of viral transmission. We characterized the diversity and catalytic efficiency of HCV NS3/4A protease quasispecies in AHC patients coinfected with HIV-1. Plasma samples obtained at HCV diagnosis from 18 MSM HIV-coinfected patients with AHC were studied. Five HCV monoinfected patient samples with AHC were also investigated. An average of 39 clones from each sample was analysed. The catalytic efficiency of the dominant quasispecies (i.e. the most abundant) from each quasispecies was also assayed for mitochondrial antiviral signalling protein (MAVS) cleavage. Phylogenetic analysis identified two clusters of patients with highly related viruses, suggesting a common source of HCV infection. None of the 18 MSM HIV-coinfected patients spontaneously cleared HCV, although 78% of the treated patients achieved a sustained virological response after early treatment with pegylated interferon (pegIFN) plus ribavirin (RBV). The synonymous-nonsynonymous (ds/dn) mutation ratio, a marker of selective pressure, was higher in AHC compared to 26 HIV-1-infected men with genotype 1a chronic hepatitis C (CHC) (P < 0.0001). NS3/4A proteases from AHC patients also exhibited higher catalytic efficiency compared to CHC patients (P < 0.0001). No differences were found when ds/dn mutation ratios and NS3/4A protease catalytic efficiencies from AHC HIV-coinfected patients were compared with AHC monoinfected patients. The presence of epidemiological networks of HCV transmission was confirmed among HIV-1-positive MSM. In addition, substantial genetic diversity was demonstrated in AHC. NS3/4A protease efficiency cleaving MAVS may be associated with virus transmission and response to pegIFN/RBV treatment.
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Affiliation(s)
- M Nevot
- Fundació irsiCaixa, Hospital Universitari Germans Trias i Pujol, Universitat Autonoma de Barcelona, Badalona, Spain
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11
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Indolfi G, Mangone G, Bartolini E, Nebbia G, Calvo PL, Moriondo M, Tovo PA, de Martino M, Azzari C, Resti M. Comparative analysis of rs12979860 SNP of the IFNL3 gene in children with hepatitis C and ethnic matched controls using 1000 Genomes Project data. PLoS One 2014; 9:e85899. [PMID: 24465773 PMCID: PMC3895017 DOI: 10.1371/journal.pone.0085899] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 12/05/2013] [Indexed: 12/17/2022] Open
Abstract
The rs12979860 single nucleotide polymorphism located on chromosome 19q13.13 near the interferon L3 gene (formerly and commonly known as interleukin 28B gene) has been associated in adults with both spontaneous and treatment induced clearance of hepatitis C virus. Although the exact mechanism of these associations remains unclear, it suggests that variation in genes involved in the immune response against the virus favours viral clearance. Limited and preliminary data are available on this issue in children. The aim of the present study was to evaluate, in a representative cohort of children with perinatal infection, the potential association between rs12979860 single nucleotide polymorphism and the outcome of hepatitis C virus infection. Alleles and genotypes frequencies were evaluated in 30 children who spontaneously cleared the virus and in 147 children with persistent infection and were compared with a population sample of ethnically matched controls with unknown hepatitis C status obtained using the 1000 Genomes Project data. The C allele and the C/C genotype showed greater frequencies in the clearance group (76.7% and 56.7%, respectively) when compared with both children with viral persistence (C allele 56.5%, p = 0.004; C/C genotype 32.7%, p = 0.02) and with the ethnically matched individuals (C allele 59.7%, p = 0.02; C/C genotype 34.7%, p = 0.03). Children with the C/C genotype were 2 times more likely to clear hepatitis C virus relative to children with the C/T and T/T genotypes combined (odds ratio: 2.7; 90% confidence intervals: 1.3-5.8). The present study provides the evidence that the rs12979860 single nucleotide polymorphism influences the natural history of hepatitis C virus in children.
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Affiliation(s)
- Giuseppe Indolfi
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Giusi Mangone
- Immunology Unit and Laboratory, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Elisa Bartolini
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Gabriella Nebbia
- U.O. Pediatria 2, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Pier Luigi Calvo
- Department of Pediatrics, Infectious Diseases Unit, University of Turin, Italy Regina Margherita Children's Hospital, Turin, Italy
| | - Maria Moriondo
- Immunology Unit and Laboratory, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Pier-Angelo Tovo
- Department of Pediatrics, Infectious Diseases Unit, University of Turin, Italy Regina Margherita Children's Hospital, Turin, Italy
| | | | - Chiara Azzari
- Immunology Unit and Laboratory, Meyer Children's University Hospital of Florence, Florence, Italy
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Massimo Resti
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Florence, Italy
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12
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Jouvin-Marche E, Macek Jílková Z, Thelu MA, Marche H, Fugier E, Van Campenhout N, Hoang XS, Marlu A, Sturm N, Callanan M, Leroy V, Zarski JP, Marche PN. Lymphocytes degranulation in liver in hepatitis C virus carriers is associated with IFNL4 polymorphisms and ALT levels. J Infect Dis 2014; 209:1907-15. [PMID: 24415789 DOI: 10.1093/infdis/jiu016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The polymorphisms of IFNL4 are strongly associated with both spontaneous hepatitis C virus (HCV) clearance and response to peg-IFN-α/ribavirin treatment. To further establish the biological effects of the IFNL4 and rs1297860 variations, we studied the activity of liver immune cells. METHODS Fresh liver samples were collected from HCV-infected patients before any treatment and from NASH patients as controls. Degranulation activity of each lymphocyte type was assessed by the surface expression of CD107a. IFNL4 polymorphisms and HCV genotypes were determined. RESULTS In the liver, frequency of CD107a(+) immune cells was significantly higher in HCV patients compared to NASH patients. Higher degranulation activity was observed in lymphocytes of HCV patients with favorable IFNL4 genotypes compared to patients with unfavorable genotypes. Multivariate regression analyses indicated that serum ALT levels were dependent on both Metavir activity score and frequency of CD107a positive NKT cells. The high level of degranulation activity observed before treatment was associated with a high HCV RNA decline at the early stage of peg-IFN-α/ribavirin treatment in patients with favorable genotypes. CONCLUSIONS These data underline that intrahepatic lymphocyte degranulation activity in HCV-infected patients is associated with IFNL4 polymorphisms and contributes to the clearance of HCV in patients with favorable genotypes under antiviral therapy.
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Affiliation(s)
- Evelyne Jouvin-Marche
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine
| | - Zuzana Macek Jílková
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine
| | - Marie-Ange Thelu
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine Pole DiGi-Dune, Centre Hospitalier Universitaire de Grenoble, La Tronche, France
| | - Helene Marche
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine
| | - Emilie Fugier
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine
| | - Nicolas Van Campenhout
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine
| | - Xuan Su Hoang
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine
| | - Alice Marlu
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine Pole DiGi-Dune, Centre Hospitalier Universitaire de Grenoble, La Tronche, France
| | - Nathalie Sturm
- Pole DiGi-Dune, Centre Hospitalier Universitaire de Grenoble, La Tronche, FranceINSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine Pole DiGi-Dune, Centre Hospitalier Universitaire de Grenoble, La Tronche, France
| | - Mary Callanan
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine
| | - Vincent Leroy
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine Pole DiGi-Dune, Centre Hospitalier Universitaire de Grenoble, La Tronche, France
| | - Jean-Pierre Zarski
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine Pole DiGi-Dune, Centre Hospitalier Universitaire de Grenoble, La Tronche, France
| | - Patrice N Marche
- INSERM, U823, Grenoble, France Université Joseph Fourier-Grenoble 1, Faculté de Médecine Pole DiGi-Dune, Centre Hospitalier Universitaire de Grenoble, La Tronche, France
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13
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Stättermayer AF, Strassl R, Maieron A, Rutter K, Stauber R, Strasser M, Beinhardt S, Datz C, Scherzer TM, Steindl-Munda P, Gschwantler M, Trauner M, Hofer H, Ferenci P. Polymorphisms of interferon-λ4 and IL28B - effects on treatment response to interferon/ribavirin in patients with chronic hepatitis C. Aliment Pharmacol Ther 2014; 39:104-11. [PMID: 24205831 DOI: 10.1111/apt.12547] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/15/2013] [Accepted: 10/16/2013] [Indexed: 12/30/2022]
Abstract
BACKGROUND The IL28B genotype in rs12979860 predicts success of peginterferon/ribavirin (PEG/RBV) therapy in patients with chronic hepatitis C (CHC). Recently, a dinucleotide frame shift variant in ss469415590 (TT or ΔG) was described, which generates the novel interferon lambda 4 protein (IFNL4). IFNL4 ss469415590 (ΔG) allele carriers have an impaired clearance of HCV infection and response to IFN-α therapy. In this study, we compared the role of IFNL4 polymorphism with the two commonly used IL28B SNPs rs12979860 and rs8099917 on response to PEG/RBV in patients with CHC. AIM To compare the role of IFNL4 polymorphism with the two commonly used IL28B SNPs rs12979860 and rs8099917 on response to PEG/RBV in patients with CHC. METHODS A total of 754 PEG/RBV patients treated (male/female = 484/270; Caucasians: 98.8%; mean age: 42.8 [CI 95%: 42.0-43.6] y; genotype (GT)1: n = 435, GT2: n = 23, GT3: n = 185, GT4: n = 114) were investigated. Liver fibrosis was assessed by liver biopsy in 456 patients. Single nucleotide polymorphisms (SNPs) in ss469415590, rs12979860 and rs8099917 were analysed by RT-PCR system. RESULTS Of the patients, 12.9% (n = 97) had the ss469415590 ΔG/ΔG genotype (IFNL4), 51.3% (n = 387) were heterozygous (TT/ΔG) and 35.8% (n = 270) had TT/TT. IFNL4 polymorphism was independently associated with SVR in GT1 (OR: 2.539, CI 95%: 1.629-3.021, P < 0.001) and GT4 (OR: 12.573, CI 95%: 3.427-46.133, P < 0.001), but not in GT3 (OR: 1.514, CI 95%: 0.933-2.458, P = 0.093). IFNL4 correlated strongly with rs12979860 (ρ = 0.988, P < 0.001), but only moderately with rs8099917 (ρ = 0.598, P < 0.001). CONCLUSIONS These findings underscore the role of IFNL4 for treatment response in patients with CHC genotypes 1 and 4. However, due to its strong correlation with rs12979860 in IL28B, there is no benefit in additional testing for IFNL4 for treatment prediction in Caucasian patients. By contrast, IFNL4 improves prediction of response to interferon-based therapies, if SNP rs8099917 is used.
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Affiliation(s)
- A F Stättermayer
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
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14
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Ferreira CDS, Abreu RM, da Silva MC, Ferreira AS, Nasser PD, Carrilho FJ, Ono SK. A fast and cost-effective method for identifying a polymorphism of interleukin 28B related to hepatitis C. PLoS One 2013; 8:e78142. [PMID: 24167602 PMCID: PMC3805516 DOI: 10.1371/journal.pone.0078142] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 09/10/2013] [Indexed: 01/01/2023] Open
Abstract
Approximately 170 million people are chronic carriers of hepatitis C virus (HCV). Patients with chronic hepatitis C are currently treated with pegylated interferon and ribavirin (PEG-IFN/RBV). A genome-wide association with PEG-IFN/RBV treatment response and a single nucleotide polymorphism (rs12979860) has been identified near the interleukin 28B gene that encodes interferon-λ-3. In this paper, we describe an innovative, fast, and low-cost multiplex polymerase chain reaction with confronting two-pair primers that detects the rs12979860 polymorphism. The assay is internally controlled and does not require the use of restriction endonucleases or special equipment. Moreover, the assay decreases costs, being about 40% cheaper than direct sequencing methods.
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Affiliation(s)
- Camila da Silva Ferreira
- University of São Paulo School of Medicine, Department of Gastroenterology, São Paulo, SP, Brazil
| | - Rodrigo Martins Abreu
- University of São Paulo School of Medicine, Department of Gastroenterology, São Paulo, SP, Brazil
| | - Marlone Cunha da Silva
- University of São Paulo School of Medicine, Department of Gastroenterology, São Paulo, SP, Brazil
| | - Aline Siqueira Ferreira
- Federal University of Juiz de Fora, Department of Parasitology, Microbiology and Immunology, Institute of Biological Sciences, Juiz de Fora, Minas Gerais, Brazil
| | - Paulo Dominguez Nasser
- University of São Paulo School of Medicine, Department of Gastroenterology, São Paulo, SP, Brazil
| | - Flair José Carrilho
- University of São Paulo School of Medicine, Department of Gastroenterology, São Paulo, SP, Brazil
| | - Suzane Kioko Ono
- University of São Paulo School of Medicine, Department of Gastroenterology, São Paulo, SP, Brazil
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15
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Ko DC, Urban TJ. Understanding human variation in infectious disease susceptibility through clinical and cellular GWAS. PLoS Pathog 2013; 9:e1003424. [PMID: 23935492 PMCID: PMC3731241 DOI: 10.1371/journal.ppat.1003424] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Dennis C Ko
- Department of Molecular Genetics and Microbiology, School of Medicine, Duke University, Durham, North Carolina, United States of
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16
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Rivero-Juarez A, Lopez-Cortes LF, Camacho A, Caruz A, Torres-Cornejo A, Martinez-Dueñas L, Ruiz-Valderas R, Torre-Cisneros J, Gutierrez-Valencia A, Rivero A. The IL28B effect on hepatitis C virus kinetics among HIV patients after the first weeks of pegylated-interferon/ribavirin treatment varies according to hepatitis C virus-1 subtype. AIDS 2013; 27:1941-7. [PMID: 23917425 DOI: 10.1097/qad.0b013e328360ea1e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To evaluate the IL28B effect on hepatitis C virus (HCV) decline during first weeks of treatment according to HCV-1 subtypes. METHODS Patients coinfected with HIV/HCV genotype 1 and naive to peginterferon-alpha-2a and ribavirin (Peg-IFN-alpha-2a/RBV) were included. Plasma HCV-RNA was measured at baseline, and then at weeks 1, 2, and 4. HCV-1 subtype (1a or 1b) was determined. HCV viral decline was analyzed according to HCV-1 subtype between baseline and week 1, week 2 and week 4 of treatment. Additionally, we analyzed the effect of the IL28B (rs12979860) genotype on HCV viral decline with HCV-1a and HCV-1b genotype patients (CC versus non-CC). RESULTS Two hundred and six patients were included in the study, of whom 113 (54.8%) and 93 (45.2%) were infected by HCV-1a and 1b genotypes, respectively. No differences were found between HCV-1 subtypes in terms of HCV viral decline or rapid virological response rate. The effect of the IL28B-CC genotype on HCV viral decline was observed only among patients infected with HCV-1b at all time points analyzed (week 1: CC 1.53 ± 0.33, non-CC 0.27 ± 0.24, P <0.001; week 2: CC 1.81 ± 0.39, non-CC 0.74 ± 0.39, P = 0.002; week 4: CC 2.97 ± 0.53, non-CC 1.2 ± 0.61, P < 0.001). CONCLUSION Our study suggests that the effect associated with the impact of the IL28B-CC genotype on HCV decline during the first weeks of treatment with Peg-IFN-alpha-2a/RBV differs according to HCV-1 subtype and may be limited to HCV-1b patients.
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Affiliation(s)
- Antonio Rivero-Juarez
- aUnidad de Enfermedades Infecciosas, Instituto Maimonides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina Sofia, Cordoba bUnidad Clínica de Enfermedades Infecciosas, Microbiología y Medicina Preventiva, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville cUnidad de Inmunogenética, Faculty of Sciences, Universidad de Jaén, Jaén, Spain
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Lee IC, Lin CH, Huang YH, Huo TI, Su CW, Hou MC, Huang HC, Lee KC, Chan CC, Lin MW, Lin HC, Lee SD. IL28B polymorphism correlates with active hepatitis in patients with HBeAg-negative chronic hepatitis B. PLoS One 2013; 8:e58071. [PMID: 23469142 PMCID: PMC3585285 DOI: 10.1371/journal.pone.0058071] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 01/29/2013] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AIMS The clinical relevance of single nucleotide polymorphisms (SNPs) near the IL28B gene is controversial in patients with hepatitis B virus (HBV) infection. This study aimed to investigate the role of viral and host factors, including IL28B genotypes, in the natural course of chronic hepatitis B (CHB). METHODS The study enrolled consecutive 115 treatment-naive CHB patients. HBV viral loads, genotypes, precore and basal core promotor mutations, serum hepatitis B surface antigen (HBsAg) and interferon-gamma inducible protein 10 (IP-10) levels as well as four SNPs of IL28B were determined. Serial alanine transaminase (ALT) levels in the previous one year before enrollment at an interval of three months were recorded. Factors associated with active hepatitis, defined as persistent ALT >2× upper limit of normal (ULN) or a peak ALT level >5× ULN, were evaluated. RESULTS The prevalence of rs8105790 TT, rs12979860 CC, rs8099917 TT, and rs10853728 CC genotypes were 88.3%, 87.4%, 88.4% and 70.9%, respectively. In HBeAg-positive patients (n = 48), HBV viral load correlated with active hepatitis, while in HBeAg-negative patients (n = 67), rs10853728 CC genotype (p = 0.032) and a trend of higher IP-10 levels (p = 0.092) were associated with active hepatitis. In multivariate analysis, high viral load (HBV DNA >10(8) IU/mL, p = 0.042, odds ratio = 3.946) was significantly associated with HBeAg-positive hepatitis, whereas rs10853728 CC genotype (p = 0.019, odds ratio = 3.927) was the only independent factor associated with active hepatitis in HBeAg-negative population. CONCLUSIONS HBV viral load and IL28B rs10853728 CC genotype correlated with hepatitis activity in HBeAg-positive and HBeAg-negative CHB, respectively. Both viral and host factors play roles in disease activity during different phases of CHB.
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Affiliation(s)
- I-Cheng Lee
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Department of Medicine, National Yang-Ming University Hospital, I-Lan, Taiwan
| | - Chen-Hao Lin
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Yi-Hsiang Huang
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Teh-Ia Huo
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Chien-Wei Su
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Ming-Chih Hou
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Endoscopy Center for Diagnosis and Treatment, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hui-Chun Huang
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Kuei-Chuan Lee
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Che-Chang Chan
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Ming-Wei Lin
- Institute of Public Health, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Han-Chieh Lin
- Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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Duarte-Rojo A, Deneke MG, Charlton MR. Interleukin-28B polymorphism in hepatitis C and liver transplantation. Liver Transpl 2013; 19:49-58. [PMID: 23008132 DOI: 10.1002/lt.23554] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 07/30/2012] [Indexed: 12/15/2022]
Abstract
The discovery of interleukin-28B (IL-28B) single-nucleotide polymorphisms has opened an important new area of research in liver transplantation (LT) for hepatitis C virus (HCV). Both recipient- and donor-derived IL-28B genotypes affect the post-LT treatment response, with sustained virological response (SVR) rates oscillating from >50% in homozygotes for the favorable allele (up to 90% when this is present in both the recipient and the donor) to <15% in homozygotes for the unfavorable allele and from 30% to 50% in heterozygotes. Other key posttransplant outcomes affected by the IL-28B genotype are the time to histological recurrence, HCV RNA and alanine aminotransferase levels, histological variables (including the rate of fibrosis progression), and hepatocellular carcinoma. Interactions between donor and recipient IL-28B genotypes are complex and may affect outcomes not directly related to HCV infections, such as acute cellular rejection (ACR) and metabolic diseases. A preferential allocation system in which livers from donors homozygous for the favorable allele are given to HCV patients might be postulated to improve SVR rates and post-LT outcomes in recipients with HCV infections (a 25% increase in SVR and an 8% decrease in mortality at 5 years). Although negative effects from this are difficult to predict, they could include an accelerated progression of fibrosis in patients with failed HCV eradication and an increase in ACR in non-HCV patients. Our knowledge of the precise role of IL-28B genotypes in the course of post-LT HCV is evolving, but existing knowledge suggests the possibility of exploring strategies that use IL-28B genotyping to reduce the impact of post-LT adverse outcomes.
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Affiliation(s)
- Andres Duarte-Rojo
- Division of Gastroenterology and Hepatology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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