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Khattak A, Vongsavath T, Haque L, Narwan A, Gish RG. The Forgotten Virus, Hepatitis D: A Review of Epidemiology, Diagnosis, and Current Treatment Strategies. J Clin Exp Hepatol 2024; 14:101395. [PMID: 38617106 PMCID: PMC11015125 DOI: 10.1016/j.jceh.2024.101395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 03/05/2024] [Indexed: 04/16/2024] Open
Abstract
Hepatitis D virus (HDV) is an RNA subvirus that infects patients with co-existing hepatitis B virus (HBV) infections. HDV burden is estimated to be approximately 15-20 million people worldwide. Despite HDV severity, screening for HDV remains inadequate. HDV screening would benefit from a revamped approach that automatically reflexes testing when individuals are diagnosed with HBV if HBsAg-positive, to total anti-HDV, and then to quantitative HDV-RNA polymerase chain reaction (PCR) rather than only testing those at high risk sequentially. There are no current treatments in the United States that are Food and Drug Administration (FDA)-approved for the treatment of HDV; however, bulevirtide (BLV) is approved in the European Union conditionally and is under review with the United States FDA. Current treatment strategies in many countries are centered on the use of pegylated-interferon-alfa-2a (PEG-IFNa-2a). There are other therapies in development globally that have shown promise, including BLV, pegylated-interferon-lambda (PEG-IFN-lambda), and lonafarnib (LNF). LNF has shown substantial response in the LOWR trials. BLV is a well-tolerated drug, but it is not finite therapy and has shown significant on-treatment responses in the MYR clinical trials, and the FDA cited concerns with the manufacturing and patient preparation of the drug that have delayed approval. The PDUFA date for BLV in the United States is mid-2024. Current studies with both BLV and LNF are limited in providing sustained virological response (SVR); future trials will need to demonstrate more substantial SVR with possible triple combination trials as options.
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Affiliation(s)
- Adam Khattak
- Department of Internal Medicine, Kirk Kerkorian School of Medicine at University of Nevada, Las Vegas, NV, USA
| | - Tahne Vongsavath
- Department of Internal Medicine, Kirk Kerkorian School of Medicine at University of Nevada, Las Vegas, NV, USA
| | - Lubaba Haque
- Department of Internal Medicine, Kirk Kerkorian School of Medicine at University of Nevada, Las Vegas, NV, USA
| | - Amrit Narwan
- Department of Internal Medicine, Kirk Kerkorian School of Medicine at University of Nevada, Las Vegas, NV, USA
| | - Robert G. Gish
- Department of Internal Medicine, Kirk Kerkorian School of Medicine at University of Nevada, Las Vegas, NV, USA
- Hepatitis B Foundation, Doylestown, PA, USA
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Degasperi E, Anolli MP, Lampertico P. Advances in hepatitis delta research: emerging insights and future directions. Sex Transm Infect 2024:sextrans-2023-056098. [PMID: 38914473 DOI: 10.1136/sextrans-2023-056098] [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: 03/23/2024] [Accepted: 05/31/2024] [Indexed: 06/26/2024] Open
Abstract
OBJECTIVES Hepatitis delta virus (HDV) is a defective virus needing the envelope provided by hepatitis B virus (HBV) in order to enter liver cells and propagate. Chronic HDV infection is considered the most severe viral hepatitis, resulting in accelerated fibrosis progression until cirrhosis and its complications (hepatocellular carcinoma, liver decompensation) compared with HBV mono-infected patients. Off-label treatment with interferon has represented the only treatment option in the last 40 years, resulting in suboptimal virological response rates and being limited by safety issues especially in patients with advanced cirrhosis. Recently, the first HBV-HDV entry inhibitor Bulevirtide (BLV) has been approved by the European Medicines Agency (EMA) for treatment of chronic compensated HDV. METHODS This review summarises most recent updates on HDV epidemiology, diagnosis and treatment, with a special focus both on clinical trials and real-life studies about BLV. An overview on new HDV compounds under development is also provided. RESULTS BLV, the HBV-HDV entry inhibitor, has shown promising safety and efficacy data in clinical trials and in real-life studies, also in patients with advanced cirrhosis and portal hypertension. However, according to EMA label treatment is currently intended long-term until clinical benefit and predictors of responses are still undefined. The potential combination with PegIFNα seems to increase virological and clinical responses. New compounds are under development or in pipeline for treatment of HDV. CONCLUSION After more than 40 years since HDV discovery, new treatment options are currently available to provide efficient strategies for chronic hepatitis Delta.
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Affiliation(s)
- Elisabetta Degasperi
- Division of Gastroenterology and Hepatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Lombardia, Italy
| | - Maria Paola Anolli
- Division of Gastroenterology and Hepatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Lombardia, Italy
| | - Pietro Lampertico
- Division of Gastroenterology and Hepatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Lombardia, Italy
- CRC 'A. M. and A. Migliavacca' Center for Liver Disease, Department of Pathophysiology and Transplantation, University of Milan, Milano, Italy
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Terrault N. Treatment of Hepatitis D - A Future Role for Combination Therapy. N Engl J Med 2024. [PMID: 38842503 DOI: 10.1056/nejme2406180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Affiliation(s)
- Norah Terrault
- From the Keck School of Medicine, University of Southern California, Los Angeles
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Wedemeyer H, Aleman S, Brunetto M, Blank A, Andreone P, Bogomolov P, Chulanov V, Mamonova N, Geyvandova N, Morozov V, Sagalova O, Stepanova T, Berger A, Ciesek S, Manuilov D, Mercier RC, Da BL, Chee GM, Li M, Flaherty JF, Lau AH, Osinusi A, Schulze Zur Wiesch J, Cornberg M, Zeuzem S, Lampertico P. Bulevirtide monotherapy in patients with chronic HDV: Efficacy and safety results through week 96 from a phase 3 randomized trial. J Hepatol 2024:S0168-8278(24)00333-7. [PMID: 38734383 DOI: 10.1016/j.jhep.2024.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/15/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024]
Abstract
BACKGROUND & AIMS Bulevirtide (BLV), a first-in-class entry inhibitor, is approved in Europe for the treatment of chronic hepatitis delta (CHD). BLV monotherapy was superior to delayed treatment at week (W) 48, the primary efficacy endpoint, in the MYR301 study (NCT03852719). Here, we assessed if continued BLV therapy until W96 would improve virologic and biochemical response rates, particularly among patients who did not achieve virologic response at W24. METHODS In this ongoing, open-label, randomized phase 3 study, patients with CHD (N = 150) were randomized (1:1:1) to treatment with BLV 2 (n = 49) or 10 mg/day (n = 50), each for 144 weeks, or to delayed treatment for 48 weeks followed by BLV 10 mg/day for 96 weeks (n = 51). Combined response was defined as undetectable hepatitis delta virus (HDV) RNA or a decrease in HDV RNA by ≥2 log10 IU/mL from baseline and alanine aminotransferase (ALT) normalization. Other endpoints included virologic response, ALT normalization, and change in HDV RNA. RESULTS Of 150 patients, 143 (95%) completed 96 weeks of the study. Efficacy responses were maintained and/or improved between W48 and W96, with similar combined, virologic, and biochemical response rates between BLV 2 and 10 mg. Of the patients with a suboptimal early virologic response at W24, 43% of non-responders and 82% of partial responders achieved virologic response at W96. Biochemical improvement often occurred independent of virologic response. Adverse events (AEs) were mostly mild, with no serious AEs related to BLV. CONCLUSIONS Virologic and biochemical responses were maintained and/or increased with longer-term BLV therapy, including in those with suboptimal early virologic response. BLV monotherapy for CHD was safe and well tolerated through W96. IMPACT AND IMPLICATIONS In July 2023, bulevirtide was fully approved for the treatment of chronic hepatitis delta (CHD) in Europe based on clinical study results from up to 48 weeks of treatment. Understanding the efficacy and safety of bulevirtide over the longer term is important for healthcare providers. In this analysis, we demonstrate that bulevirtide monotherapy for 96 weeks in patients with CHD was associated with continued improvements in combined, virologic, and biochemical responses as well as liver stiffness from week 48 at both the 2-mg and 10-mg doses. Patients with suboptimal virologic responses to bulevirtide at week 24 also benefited from continued therapy, with the majority achieving virologic response or biochemical improvement by week 96. CLINICAL TRIALS GOV IDENTIFIER NCT03852719.
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Affiliation(s)
- Heiner Wedemeyer
- Medizinische Hochschule Hannover, Klinik für Gastroenterologie, Hepatologie, Infektiologie und Endokrinologie, Hannover, Germany.
| | - Soo Aleman
- Karolinska University Hospital/Karolinska Institute, Department of Infectious Diseases, Stockholm, Sweden
| | - Maurizia Brunetto
- University Hospital of Pisa, Hepatology Unit, Reference Center of the Tuscany Region for Chronic Liver Disease and Cancer, Pisa, Italy; University of Pisa, Department of Clinical and Experimental Medicine, Pisa, Italy
| | - Antje Blank
- Heidelberg University Medical Faculty, Heidelberg University Hospital, Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg, Germany
| | - Pietro Andreone
- University of Modena and Reggio Emilia, Internal Medicine, Baggiovara Hospital, Modena, Italy
| | - Pavel Bogomolov
- State Budgetary Institution of Health Care of Moscow Region, Moscow Regional Research Clinical Institute Named After M.F. Vladimirsky, Moscow, Russian Federation
| | - Vladimir Chulanov
- FSBI National Research Medical Center for Phthisiopulmonology and Infectious Diseases of the Ministry of Health of the Russian Federation, Moscow, Russian Federation
| | - Nina Mamonova
- FSBI National Research Medical Center for Phthisiopulmonology and Infectious Diseases of the Ministry of Health of the Russian Federation, Moscow, Russian Federation
| | | | | | - Olga Sagalova
- Federal State-Funded Institution of Higher Education, South Ural State Medical University of Ministry of Health of the Russian Federation, Chelyabinsk, Russian Federation
| | | | - Annemarie Berger
- Institute for Medical Virology, German Centre for Infection Research, External Partner Site Frankfurt, University Hospital, Goethe University, Frankfurt am Main, Germany
| | - Sandra Ciesek
- Institute for Medical Virology, German Centre for Infection Research, External Partner Site Frankfurt, University Hospital, Goethe University, Frankfurt am Main, Germany
| | | | | | - Ben L Da
- Gilead Sciences, Foster City, CA, United States
| | | | - Mingyang Li
- Gilead Sciences, Foster City, CA, United States
| | | | | | - Anu Osinusi
- Gilead Sciences, Foster City, CA, United States
| | - Julian Schulze Zur Wiesch
- Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik Studienambulanz Hepatologie, Hamburg, Germany
| | - Markus Cornberg
- Medizinische Hochschule Hannover, Klinik für Gastroenterologie, Hepatologie, Infektiologie und Endokrinologie, Hannover, Germany
| | - Stefan Zeuzem
- University Hospital Frankfurt, Department of Medicine, Frankfurt am Main, Germany
| | - Pietro Lampertico
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; CRC A. M. and A. Migliavacca Center for Liver Disease, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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Kushner T, Andrews RR. Addressing hepatitis delta in primary care practices in the US: a narrative review. Curr Med Res Opin 2024; 40:813-820. [PMID: 38487951 DOI: 10.1080/03007995.2024.2318004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 02/07/2024] [Indexed: 04/16/2024]
Abstract
OBJECTIVE Infection with the hepatitis delta virus (HDV), a unique RNA virus that requires hepatitis B virus (HBV) antigens for its assembly, replication, and transmission, causes severe viral hepatitis. Compared to HBV monoinfection, HDV infection increases the risk of severe liver disease, necessity for liver transplant, and mortality. Global HDV prevalence estimates vary from 5% to 15% among persons with HBV, but screening guidelines for HDV are inconsistent; some recommend risk-based screening, while others recommend universal screening for all people with HBV. Among primary care providers (PCPs) in the US, there is a lack of awareness and/or insufficient adherence to current recommendations for the screening of HDV infection and management of chronic HDV. METHODS Publications were obtained by conducting literature searches between July and August 2022 using the PubMed database and by manual searches of the retrieved literature for additional references. Information was synthesized to highlight HDV screening and management strategies for PCPs. Best practices for PCPs based on current guidelines and comanagement strategies for patients with HBV and HDV infection were summarized. RESULTS We recommend universal screening for HDV in patients positive for hepatitis B surface antigen. Confirmed HDV infection should prompt evaluation by a liver specialist, if available, with whom the PCP can comanage the patient. PCPs should counsel patients on the expected course of the disease, lifestyle factors that may influence liver health, need for consistent disease monitoring and follow-up, and risk of disease transmission. Screening is suggested for sexual partners, household contacts, and family members, with HBV immunization recommended for those found to be susceptible. There are currently no US Food and Drug Administration-approved therapies for HDV infection; thus, management is limited to treatments for chronic HBV infection plus long-term monitoring of liver health. CONCLUSIONS PCPs can be a valuable point of care for patients to access HDV/HBV screening, HBV immunization, and education, and can comanage patients with HBV and/or HDV infection.
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Affiliation(s)
- Tatyana Kushner
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Souleiman R, Cornberg M. [Diagnosis and treatment of viral hepatitis B and D in 2024]. INNERE MEDIZIN (HEIDELBERG, GERMANY) 2024; 65:296-307. [PMID: 38418664 DOI: 10.1007/s00108-024-01671-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/25/2024] [Indexed: 03/02/2024]
Abstract
Despite the availability of vaccines, hepatitis B remains a significant cause of fulminant hepatitis, liver cirrhosis and hepatocellular carcinoma worldwide. The increase in reported hepatitis B cases in Germany is attributed to factors such as immigration and the hepatitis B surface antigen (HBsAg) screening introduced in 2020 as part of health check-ups. The indication for treatment depends on various factors, including the level of hepatitis B virus (HBV) DNA and inflammatory activity. Nucleos(t)ide analogues are the preferred treatment option, but functional cure, defined as HBsAg loss, is rare. In principle, treatment with nucleos(t)ide analogues should usually be discontinued after loss of HBsAg, but can be stopped earlier under certain conditions and is currently the subject of ongoing research. Pregnancy and immunosuppression in the context of hepatitis B require special attention. In addition, a possible hepatitis D virus co-infection must always be taken into account, which is why every HBsAg-positive person should be tested for anti-HDV. Since 2020, the entry inhibitor bulevirtide has become a new treatment option alongside pegylated interferon alfa, which represents a significant advance in the treatment landscape.
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Affiliation(s)
- Roni Souleiman
- Klinik für Gastroenterologie, Hepatologie, Infektiologie, und Endokrinologie, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Deutschland
- Zentrum für Individualisierte Infektionsmedizin (CiiM), Hannover, Deutschland
- Partnerstandort Hannover-Braunschweig, Deutsches Zentrum für Infektionsforschung (DZIF), Hannover, Deutschland
| | - Markus Cornberg
- Klinik für Gastroenterologie, Hepatologie, Infektiologie, und Endokrinologie, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Deutschland.
- Zentrum für Individualisierte Infektionsmedizin (CiiM), Hannover, Deutschland.
- Partnerstandort Hannover-Braunschweig, Deutsches Zentrum für Infektionsforschung (DZIF), Hannover, Deutschland.
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Lam R, Lim JK. Advances in discovery of novel investigational agents for functional cure of chronic hepatitis B: A comprehensive review of phases II and III therapeutic agents. World J Hepatol 2024; 16:331-343. [PMID: 38577537 PMCID: PMC10989302 DOI: 10.4254/wjh.v16.i3.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/23/2024] [Accepted: 02/29/2024] [Indexed: 03/27/2024] Open
Abstract
Chronic hepatitis B virus (HBV) infection affects over 295 million people globally and an estimated 1.6 million people in the United States. It is associated with significant morbidity and mortality due to cirrhosis, liver failure, and liver cancer. Antiviral therapy with oral nucleos(t)ide analogues is associated with high rates of virologic suppression, which in turn has been associated with a decreased risk of liver complications. However, current antiviral regimens are limited by concerns with adverse effects, adherence, resistance, long-term treatment, and ongoing risk for liver events. Novel investigational agents are currently in development and are targeted at achieving functional cure with sustained hepatitis B surface antigen (HBsAg) loss and suppression of HBV DNA. Herein we review key evidence from phases II and III trials defining the efficacy and safety profiles for key investigational agents for functional cure of chronic hepatitis B, including core/capsid inhibitors, entry inhibitors, RNA interference (siRNA/ASO), HBsAg inhibitors, Toll-like receptor agonists, checkpoint inhibitors, and therapeutic vaccines.
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Affiliation(s)
- Robert Lam
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, United States
| | - Joseph K Lim
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, United States.
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Dietz-Fricke C, Degasperi E, Jachs M, Maasoumy B, Reiter FP, Geier A, Grottenthaler JM, Berg CP, Sprinzl K, Zeuzem S, Gödiker J, Schlevogt B, Herta T, Wiegand J, Soffredini R, Wedemeyer H, Deterding K, Reiberger T, Lampertico P. Safety and efficacy of off-label bulevirtide monotherapy in patients with HDV with decompensated Child-B cirrhosis-A real-world case series. Hepatology 2024:01515467-990000000-00803. [PMID: 38478755 DOI: 10.1097/hep.0000000000000847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 02/25/2024] [Indexed: 04/21/2024]
Abstract
BACKGROUND AND AIMS Chronic hepatitis D is the most debilitating form of viral hepatitis frequently progressing to cirrhosis and subsequent decompensation. However, the HDV entry inhibitor bulevirtide is only approved for antiviral treatment of patients with compensated disease. We aimed for the analysis of real-world data on the off-label use of bulevirtide in the setting of decompensated liver cirrhosis. APPROACH AND RESULTS We conducted a retrospective study in patients with HDV with decompensated liver disease at German, Austrian, and Italian centers. We included 19 patients (47% male, mean age: 51 years) with liver cirrhosis Child-Pugh B. The median MELD score was 12 (range 9-17) at treatment initiation. The median observation period was 41 weeks. Virologic response was achieved in 74% and normal alanine aminotransferase was observed in 74%. The combined response was achieved by 42%. The most relevant adverse events included self-limited alanine aminotransferase flares, an asymptomatic increase in bile acids, and the need for liver transplantation. Despite bile acid increases, adverse events were considered unrelated. Clinical and laboratory improvement from Child-Pugh B to A occurred in 47% (n = 9/19). Improvements in the amount of ascites were observed in 58% of the patients initially presenting with ascites (n = 7/12). CONCLUSIONS This report on off-label bulevirtide treatment in patients with decompensated HDV cirrhosis shows similar virologic and biochemical response rates as observed in compensated liver disease. Significant improvements were observed in surrogates of hepatic function and portal hypertension. However, this improvement was not seen in all patients. Controlled trials are needed to confirm the safety and efficacy of bulevirtide in decompensated HDV cirrhosis.
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Affiliation(s)
- Christopher Dietz-Fricke
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Elisabetta Degasperi
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Mathias Jachs
- Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Benjamin Maasoumy
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Florian P Reiter
- Department of Medicine II, Division of Hepatology, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Andreas Geier
- Department of Medicine II, Division of Hepatology, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Julia M Grottenthaler
- Department of Gastroenterology, Gastrointestinal Oncology, Hepatology, Infectiology, and Geriatrics, University Hospital Tuebingen, Tuebingen, Germany
| | - Christoph P Berg
- Department of Gastroenterology, Gastrointestinal Oncology, Hepatology, Infectiology, and Geriatrics, University Hospital Tuebingen, Tuebingen, Germany
| | - Kathrin Sprinzl
- Department of Internal Medicine I, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Stefan Zeuzem
- Department of Internal Medicine I, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Juliana Gödiker
- Department of Medicine B, University Hospital Muenster, Muenster, Germany
| | - Bernhard Schlevogt
- Department of Medicine B, University Hospital Muenster, Muenster, Germany
- Department of Gastroenterology, Medical Center Osnabrueck, Osnabrueck, Germany
| | - Toni Herta
- Department of Medicine II, Division of Hepatology, Leipzig University Medical Center, Leipzig, Germany
- Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Campus Charité Mitte, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes Wiegand
- Department of Medicine II, Division of Hepatology, Leipzig University Medical Center, Leipzig, Germany
- Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Campus Charité Mitte, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Roberta Soffredini
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
- D-SOLVE Consortium, a EU Horizon Europe funded project (No 101057917)
- Excellence Cluster Resist, Hannover Medical School, Germany
- German Centre for Infection Research (DZIF), Hannover-Braunschweig, Germany
| | - Katja Deterding
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Thomas Reiberger
- Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Pietro Lampertico
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, CRC "A. M. and A. Migliavacca" Center for Liver Disease, University of Milan, Milan, Italy
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Gigi E, Lagopoulos V, Liakos A. Management of autoimmune hepatitis induced by hepatitis delta virus. World J Gastroenterol 2024; 30:799-805. [PMID: 38516234 PMCID: PMC10950643 DOI: 10.3748/wjg.v30.i8.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/02/2024] [Accepted: 01/30/2024] [Indexed: 02/26/2024] Open
Abstract
Approximately 12-72 million people worldwide are co-infected with hepatitis B virus (HBV) and hepatitis delta virus (HDV). This concurrent infection can lead to several severe outcomes with hepatic disease, such as cirrhosis, fulminant hepatitis, and hepatocellular carcinoma, being the most common. Over the past few decades, a correlation between viral hepatitis and autoimmune diseases has been reported. Furthermore, autoantibodies have been detected in the serum of patients co-infected with HBV/HDV, and autoimmune features have been reported. However, to date, very few cases of clinically significant autoimmune hepatitis (AIH) have been reported in patients with HDV infection, mainly in those who have received treatment with pegylated interferon. Interestingly, there are some patients with HBV infection and AIH in whom HDV infection is unearthed after receiving treatment with immunosuppressants. Consequently, several questions remain unanswered with the challenge to distinguish whether it is autoimmune or "autoimmune-like" hepatitis being the most crucial. Second, it remains uncertain whether autoimmunity is induced by HBV or delta virus. Finally, we investigated whether the cause of AIH lies in the previous treatment of HDV with pegylated interferon. These pressing issues should be elucidated to clarify whether new antiviral treatments for HDV, such as Bulevirtide or immu-nosuppressive drugs, are more appropriate for the management of patients with HDV and AIH.
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Affiliation(s)
- Eleni Gigi
- Hepatology Unit, The Second Internal Medicine Department, Aristotle University Medical School, Hippokrateio General Hospital, Thessaloniki 54642, Greece
| | - Vasileios Lagopoulos
- Department of Surgical, AHEPA General Hospital of Thessaloniki, Thessaloniki 54636, Greece
| | - Aris Liakos
- Clinical Research and Evidence-Based Medicine Unit, Second Medical Department, Hippokratio General Hospital, Aristotle University Thessaloniki, Thessaloniki 54642, Greece
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10
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Gopalakrishna H, Mironova M, Dahari H, Koh C, Heller T. Advances and Challenges in Managing Hepatitis D Virus: Evolving Strategies. CURRENT HEPATOLOGY REPORTS 2024; 23:32-44. [PMID: 38533303 PMCID: PMC10965034 DOI: 10.1007/s11901-024-00643-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 01/14/2024] [Indexed: 03/28/2024]
Abstract
Purpose of Review Hepatitis D Virus (HDV), although a small defective virus, poses a substantial public health challenge due to lack of awareness, underrecognized prevalence, and limited treatment options. Universal HDV screening within hepatitis B virus (HBV) cohorts is essential to address this issue. Despite its aggressive nature, effective HDV therapies have remained elusive for over four decades. Recent Findings Advances in understanding HDV's biology and clinical behavior offer potential therapeutic breakthroughs, fostering optimism. As insights grow, effective and targeted therapies are being developed to improve HDV management. Summary This review delves into HDV's intricate structure and biology, highlighting formidable hurdles in antiviral development. It emphasizes the importance of widespread screening, exploring noninvasive diagnostics, and examining current and emerging innovative therapeutic strategies. Moreover, the review explores models for monitoring treatment response. In essence, this review simplifies the complexities of effectively combating HDV.
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Affiliation(s)
- Harish Gopalakrishna
- Liver Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Maria Mironova
- Liver Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Harel Dahari
- The Program for Experimental & Theoretical Modeling, Division of Hepatology, Department of Medicine, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Christopher Koh
- Liver Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Theo Heller
- Liver Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
- Translational Hepatology Section, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 10 Center Drive, Building 10, Room 4-5722, Bethesda, MD 20892-1800, USA
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Hu JL, Huang AL. Classifying hepatitis B therapies with insights from covalently closed circular DNA dynamics. Virol Sin 2024; 39:9-23. [PMID: 38110037 PMCID: PMC10877440 DOI: 10.1016/j.virs.2023.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 12/13/2023] [Indexed: 12/20/2023] Open
Abstract
The achievement of a functional cure for chronic hepatitis B (CHB) remains limited to a minority of patients treated with currently approved drugs. The primary objective in developing new anti-HBV drugs is to enhance the functional cure rates for CHB. A critical prerequisite for the functional cure of CHB is a substantial reduction, or even eradication of covalently closed circular DNA (cccDNA). Within this context, the changes in cccDNA levels during treatment become as a pivotal concern. We have previously analyzed the factors influencing cccDNA dynamics and introduced a preliminary classification of hepatitis B treatment strategies based on these dynamics. In this review, we employ a systems thinking perspective to elucidate the fundamental aspects of the HBV replication cycle and to rationalize the classification of treatment strategies according to their impact on the dynamic equilibrium of cccDNA. Building upon this foundation, we categorize current anti-HBV strategies into two distinct groups and advocate for their combined use to significantly reduce cccDNA levels within a well-defined timeframe.
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Affiliation(s)
- Jie-Li Hu
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Chongqing Medical University, Chongqing, 400016, China.
| | - Ai-Long Huang
- Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, Chongqing Medical University, Chongqing, 400016, China.
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12
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Yu D, Wagner S, Schütz M, Jeon Y, Seo M, Kim J, Brückner N, Kicuntod J, Tillmanns J, Wangen C, Hahn F, Kaufer BB, Neipel F, Eickhoff J, Klebl B, Nam K, Marschall M. An Antiherpesviral Host-Directed Strategy Based on CDK7 Covalently Binding Drugs: Target-Selective, Picomolar-Dose, Cross-Virus Reactivity. Pharmaceutics 2024; 16:158. [PMID: 38399219 PMCID: PMC10892818 DOI: 10.3390/pharmaceutics16020158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/12/2024] [Accepted: 01/18/2024] [Indexed: 02/25/2024] Open
Abstract
The repertoire of currently available antiviral drugs spans therapeutic applications against a number of important human pathogens distributed worldwide. These include cases of the pandemic severe acute respiratory coronavirus type 2 (SARS-CoV-2 or COVID-19), human immunodeficiency virus type 1 (HIV-1 or AIDS), and the pregnancy- and posttransplant-relevant human cytomegalovirus (HCMV). In almost all cases, approved therapies are based on direct-acting antivirals (DAAs), but their benefit, particularly in long-term applications, is often limited by the induction of viral drug resistance or side effects. These issues might be addressed by the additional use of host-directed antivirals (HDAs). As a strong input from long-term experiences with cancer therapies, host protein kinases may serve as HDA targets of mechanistically new antiviral drugs. The study demonstrates such a novel antiviral strategy by targeting the major virus-supportive host kinase CDK7. Importantly, this strategy focuses on highly selective, 3D structure-derived CDK7 inhibitors carrying a warhead moiety that mediates covalent target binding. In summary, the main experimental findings of this study are as follows: (1) the in vitro verification of CDK7 inhibition and selectivity that confirms the warhead covalent-binding principle (by CDK-specific kinase assays), (2) the highly pronounced antiviral efficacies of the hit compounds (in cultured cell-based infection models) with half-maximal effective concentrations that reach down to picomolar levels, (3) a particularly strong potency of compounds against strains and reporter-expressing recombinants of HCMV (using infection assays in primary human fibroblasts), (4) additional activity against further herpesviruses such as animal CMVs and VZV, (5) unique mechanistic properties that include an immediate block of HCMV replication directed early (determined by Western blot detection of viral marker proteins), (6) a substantial drug synergism in combination with MBV (measured by a Loewe additivity fixed-dose assay), and (7) a strong sensitivity of clinically relevant HCMV mutants carrying MBV or ganciclovir resistance markers. Combined, the data highlight the huge developmental potential of this host-directed antiviral targeting concept utilizing covalently binding CDK7 inhibitors.
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Affiliation(s)
- DongHoon Yu
- Qurient Co., Ltd., C-Dong, 242 Pangyo-ro, C801 Bundang-gu, Seongnam-si 13487, Republic of Korea
| | - Sabrina Wagner
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Martin Schütz
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Yeejin Jeon
- Qurient Co., Ltd., C-Dong, 242 Pangyo-ro, C801 Bundang-gu, Seongnam-si 13487, Republic of Korea
| | - Mooyoung Seo
- Qurient Co., Ltd., C-Dong, 242 Pangyo-ro, C801 Bundang-gu, Seongnam-si 13487, Republic of Korea
| | - Jaeseung Kim
- Qurient Co., Ltd., C-Dong, 242 Pangyo-ro, C801 Bundang-gu, Seongnam-si 13487, Republic of Korea
| | - Nadine Brückner
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Jintawee Kicuntod
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Julia Tillmanns
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Christina Wangen
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Friedrich Hahn
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Benedikt B. Kaufer
- Institute of Virology, Freie Universität Berlin, Robert-von-Ostertag-Straße 7–13, 14163 Berlin, Germany
| | - Frank Neipel
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
| | - Jan Eickhoff
- Lead Discovery Center GmbH, Otto-Hahn-Straße 15, 44227 Dortmund, Germany
| | - Bert Klebl
- Lead Discovery Center GmbH, Otto-Hahn-Straße 15, 44227 Dortmund, Germany
- The Norwegian College of Fishery Science UiT, Arctic University of Norway, 9037 Tromsø, Norway
| | - Kiyean Nam
- Qurient Co., Ltd., C-Dong, 242 Pangyo-ro, C801 Bundang-gu, Seongnam-si 13487, Republic of Korea
| | - Manfred Marschall
- Institute for Clinical and Molecular Virolosgy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schlossgarten 4, 91054 Erlangen, Germany
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Abstract
Importance Hepatitis D virus (HDV) infection occurs in association with hepatitis B virus (HBV) infection and affects approximately 12 million to 72 million people worldwide. HDV causes more rapid progression to cirrhosis and higher rates of hepatocellular carcinoma than HBV alone or hepatitis C virus. Observations HDV requires HBV to enter hepatocytes and to assemble and secrete new virions. Acute HDV-HBV coinfection is followed by clearance of both viruses in approximately 95% of people, whereas HDV superinfection in an HBV-infected person results in chronic HDV-HBV infection in more than 90% of infected patients. Chronic hepatitis D causes more rapidly progressive liver disease than HBV alone. Approximately 30% to 70% of patients with chronic hepatitis D have cirrhosis at diagnosis and more than 50% die of liver disease within 10 years of diagnosis. However, recent studies suggested that progression is variable and that more than 50% of people may have an indolent course. Only approximately 20% to 50% of people infected by hepatitis D have been diagnosed due to lack of awareness and limited access to reliable diagnostic tests for the HDV antibody and HDV RNA. The HBV vaccine prevents HDV infection by preventing HBV infection, but no vaccines are available to protect those with established HBV infection against HDV. Interferon alfa inhibits HDV replication and reduces the incidence of liver-related events such as liver decompensation, hepatocellular carcinoma, liver transplant, or mortality from 8.5% per year to 3.3% per year. Adverse effects from interferon alfa such as fatigue, depression, and bone marrow suppression are common. HBV nucleos(t)ide analogues, such as entecavir or tenofovir, are ineffective against HDV. Phase 3 randomized clinical trials of bulevirtide, which blocks entry of HDV into hepatocytes, and lonafarnib, which interferes with HDV assembly, showed that compared with placebo or observation, these therapies attained virological and biochemical response in up to 56% of patients after 96 weeks of bulevirtide monotherapy and 19% after 48 weeks of lonafarnib, ritonavir, and pegylated interferon alfa treatment. Conclusions and Relevance HDV infection affects approximately 12 million to 72 million people worldwide and is associated with more rapid progression to cirrhosis and liver failure and higher rates of hepatocellular carcinoma than infection with HBV alone. Bulevirtide was recently approved for HDV in Europe, whereas pegylated interferon alfa is the only treatment available in most countries.
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Affiliation(s)
- Francesco Negro
- Division of Gastroenterology and Hepatology, Geneva University Hospitals, Geneva, Switzerland
| | - Anna S Lok
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor
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14
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Groth C, Maric J, Garcés Lázaro I, Hofman T, Zhang Z, Ni Y, Keller F, Seufert I, Hofmann M, Neumann-Haefelin C, Sticht C, Rippe K, Urban S, Cerwenka A. Hepatitis D infection induces IFN-β-mediated NK cell activation and TRAIL-dependent cytotoxicity. Front Immunol 2023; 14:1287367. [PMID: 38143742 PMCID: PMC10739304 DOI: 10.3389/fimmu.2023.1287367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/23/2023] [Indexed: 12/26/2023] Open
Abstract
Background and aims The co-infection of hepatitis B (HBV) patients with the hepatitis D virus (HDV) causes the most severe form of viral hepatitis and thus drastically worsens the course of the disease. Therapy options for HBV/HDV patients are still limited. Here, we investigated the potential of natural killer (NK) cells that are crucial drivers of the innate immune response against viruses to target HDV-infected hepatocytes. Methods We established in vitro co-culture models using HDV-infected hepatoma cell lines and human peripheral blood NK cells. We determined NK cell activation by flow cytometry, transcriptome analysis, bead-based cytokine immunoassays, and NK cell-mediated effects on T cells by flow cytometry. We validated the mechanisms using CRISPR/Cas9-mediated gene deletions. Moreover, we assessed the frequencies and phenotype of NK cells in peripheral blood of HBV and HDV superinfected patients. Results Upon co-culture with HDV-infected hepatic cell lines, NK cells upregulated activation markers, interferon-stimulated genes (ISGs) including the death receptor ligand tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), produced interferon (IFN)-γ and eliminated HDV-infected cells via the TRAIL-TRAIL-R2 axis. We identified IFN-β released by HDV-infected cells as an important enhancer of NK cell activity. In line with our in vitro data, we observed activation of peripheral blood NK cells from HBV/HDV co-infected, but not HBV mono-infected patients. Conclusion Our data demonstrate NK cell activation in HDV infection and their potential to eliminate HDV-infected hepatoma cells via the TRAIL/TRAIL-R2 axis which implies a high relevance of NK cells for the design of novel anti-viral therapies.
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Affiliation(s)
- Christopher Groth
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Jovana Maric
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Irene Garcés Lázaro
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Tomáš Hofman
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Zhenfeng Zhang
- Department of Infectious Diseases, Molecular Virology, Heidelberg University, Heidelberg, Germany
| | - Yi Ni
- Department of Infectious Diseases, Molecular Virology, Heidelberg University, Heidelberg, Germany
- German Center for Infection Research Deutsches Zentrum für Infektionsforschung (DZFI) - Heidelberg Partner Site, Heidelberg, Germany
| | - Franziska Keller
- Department of Medicine II (Gastroenterology, Hepatology, Endocrinology and Infectious Diseases), Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Isabelle Seufert
- Division of Chromatin Networks, German Cancer Research Center Deutsches Krebsforschungszentrum (DKFZ) and Bioquant, Heidelberg, Germany
| | - Maike Hofmann
- Department of Medicine II (Gastroenterology, Hepatology, Endocrinology and Infectious Diseases), Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Christoph Neumann-Haefelin
- Department of Medicine II (Gastroenterology, Hepatology, Endocrinology and Infectious Diseases), Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Carsten Sticht
- Medical Research Center, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Karsten Rippe
- Division of Chromatin Networks, German Cancer Research Center Deutsches Krebsforschungszentrum (DKFZ) and Bioquant, Heidelberg, Germany
| | - Stephan Urban
- Department of Infectious Diseases, Molecular Virology, Heidelberg University, Heidelberg, Germany
- German Center for Infection Research Deutsches Zentrum für Infektionsforschung (DZFI) - Heidelberg Partner Site, Heidelberg, Germany
| | - Adelheid Cerwenka
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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15
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Sandmann L, Berg T, Deterding K, Fischer N, Hinrichsen H, Petersen J, Tacke F, Cornberg M. Addendum „Antivirale Therapie der chronischen Hepatitis-D-Virusinfektion“ zur S3-Leitlinie „Prophylaxe, Diagnostik und Therapie der Hepatitis-B-Virusinfektion“ der Deutschen Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS). ZEITSCHRIFT FUR GASTROENTEROLOGIE 2023; 61:1635-1653. [PMID: 38081179 DOI: 10.1055/a-2181-3046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Affiliation(s)
- Lisa Sandmann
- Klinik für Gastroenterologie, Hepatologie, Infektiologie und Endokrinologie, Medizinische Hochschule Hannover, Hannover, Deutschland
- D-SOLVE Consortium, Horizon Europe Project, partner-site Medizinische Hochschule Hannover, Hannover, Deutschland
| | - Thomas Berg
- Bereich Hepatologie, Medizinische Klinik II, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Katja Deterding
- Klinik für Gastroenterologie, Hepatologie, Infektiologie und Endokrinologie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - Nadine Fischer
- Deutsche Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS), Berlin, Deutschland
| | | | - Jörg Petersen
- IFI Institut für Interdisziplinäre Medizin an der Asklepios Klinik St Georg, Hamburg, Deutschland
| | - Frank Tacke
- Medizinische Klinik m. S. Hepatologie und Gastroenterologie, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Markus Cornberg
- Klinik für Gastroenterologie, Hepatologie, Infektiologie und Endokrinologie, Medizinische Hochschule Hannover, Hannover, Deutschland
- Centre for individualised infection Medicine (CiiM), Hannover, Deutschland
- Deutsches Zentrum für Infektionsforschung (DZIF), partner-site Hannover-Braunschweig, Deutschland
- D-SOLVE Consortium, Horizon Europe Project, partner-site Medizinische Hochschule Hannover, Hannover, Deutschland
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16
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Sandmann L, Berg T, Deterding K, Fischer N, Hinrichsen H, Petersen J, Tacke F, Cornberg M. Antiviral Therapy of Chronic Hepatitis D Virus Infection - Addendum to the S3 Guideline "Prophylaxis, Diagnosis and Therapy of Hepatitis B Virus Infection" of the German Society for Gastroenterology, Digestive and Metabolic Diseases (DGVS). ZEITSCHRIFT FUR GASTROENTEROLOGIE 2023; 61:e715-e732. [PMID: 38081178 DOI: 10.1055/a-2181-3345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Affiliation(s)
- Lisa Sandmann
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
- D-SOLVE Consortium, Horizon Europe Project, partner-site Hannover Medical School, Germany
| | - Thomas Berg
- Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Leipzig, Germany
| | - Katja Deterding
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Nadine Fischer
- German Society for Gastroenterology, Digestive and Metabolic Diseases (DGVS), Berlin, Germany
| | | | - Jörg Petersen
- IFI Institute for Interdisciplinary Medicine at Asklepios Klinik St Georg, Hamburg, Germany
| | - Frank Tacke
- Department of Hepatology and Gastroenterology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Markus Cornberg
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
- Centre for individualised infection Medicine (CiiM), Hannover, Germany
- German Center for Infection Research (DZIF), partner-site Hannover-Braunschweig, Germany
- D-SOLVE Consortium, Horizon Europe Project, partner-site Hannover Medical School, Germany
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17
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Korkmaz P, Asan A, Karakeçili F, Tekin S, Demirtürk N. New Treatment Options in Chronic Hepatitis B: How Close Are We to Cure? INFECTIOUS DISEASES & CLINICAL MICROBIOLOGY 2023; 5:267-280. [PMID: 38633851 PMCID: PMC10986727 DOI: 10.36519/idcm.2023.265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/18/2023] [Indexed: 04/19/2024]
Abstract
Hepatitis B virus (HBV) infection is the leading cause of chronic liver disease worldwide. HBV-infected patients are at a lifetime risk of developing liver cirrhosis and hepatocellular carcinoma (HCC). Today, pegylated interferon (Peg-IFN) and nucleos(t)ide analogs (NAs) are used in the treatment of patients with chronic hepatitis B (CHB). Both treatment options have limitations. Despite effective viral suppression, NAs have little effect on covalently closed circular DNA (cccDNA), the stable episomal form of the HBV genome in hepatocytes. Therefore, the cure rate with NAs is low, and long-term treatment is required. Although the cure rate is better with Peg-IFN, it is difficult to tolerate due to drug side effects. Therefore, new treatment options are needed in the treatment of HBV infection. We can group new treatments under two headings: those that interfere with the viral life cycle and spread and those that modulate the immune response. Clinical studies show that combinations of treatments that directly target the viral life cycle and treatments that regulate the host immune system will be among the important treatment strategies in the future. As new direct-acting antiviral (DAA) and immunomodulatory therapies continue to emerge and evolve, functional cures in HBV treatment may be an achievable goal.
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Affiliation(s)
- Pınar Korkmaz
- Department of Infectious Diseases and Clinical Microbiology, Kütahya Health Sciences University School of Medicine, Kütahya, Türkiye
| | - Ali Asan
- Department of Infectious Diseases and Clinical Microbiology, Bursa Health Sciences University School of Medicine, Bursa, Türkiye
| | - Faruk Karakeçili
- Department of Infectious Diseases and Clinical Microbiology, Erzincan Binali Yıldırım University School of Medicine, Erzincan, Türkiye
| | - Süda Tekin
- Department of Infectious Diseases and Clinical Microbiology, Koç University School of Medicine, İstanbul, Türkiye
| | - Neşe Demirtürk
- Department of Infectious Diseases and Clinical Microbiology, Afyonkarahisar Health Sciences University, School of Medicine, Afyonkarahisar, Türkiye
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18
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Becker P, Naughton F, Brotherton D, Pacheco-Gomez R, Beckstein O, Cameron AD. Mechanism of substrate binding and transport in BASS transporters. eLife 2023; 12:RP89167. [PMID: 37963091 PMCID: PMC10645422 DOI: 10.7554/elife.89167] [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] [Indexed: 11/16/2023] Open
Abstract
The bile acid sodium symporter (BASS) family transports a wide array of molecules across membranes, including bile acids in humans, and small metabolites in plants. These transporters, many of which are sodium-coupled, have been shown to use an elevator mechanism of transport, but exactly how substrate binding is coupled to sodium ion binding and transport is not clear. Here, we solve the crystal structure at 2.3 Å of a transporter from Neisseria meningitidis (ASBTNM) in complex with pantoate, a potential substrate of ASBTNM. The BASS family is characterised by two helices that cross-over in the centre of the protein in an arrangement that is intricately held together by two sodium ions. We observe that the pantoate binds, specifically, between the N-termini of two of the opposing helices in this cross-over region. During molecular dynamics simulations the pantoate remains in this position when sodium ions are present but is more mobile in their absence. Comparison of structures in the presence and absence of pantoate demonstrates that pantoate elicits a conformational change in one of the cross-over helices. This modifies the interface between the two domains that move relative to one another to elicit the elevator mechanism. These results have implications, not only for ASBTNM but for the BASS family as a whole and indeed other transporters that work through the elevator mechanism.
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Affiliation(s)
- Patrick Becker
- School of Life Sciences, University of WarwickCoventryUnited Kingdom
| | - Fiona Naughton
- Department of Physics, Arizona State UniversityTempeUnited States
| | | | | | - Oliver Beckstein
- Department of Physics, Arizona State UniversityTempeUnited States
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19
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Ghany MG, Buti M, Lampertico P, Lee HM. Guidance on treatment endpoints and study design for clinical trials aiming to achieve cure in chronic hepatitis B and D: Report from the 2022 AASLD-EASL HBV-HDV Treatment Endpoints Conference. J Hepatol 2023; 79:1254-1269. [PMID: 37377088 DOI: 10.1016/j.jhep.2023.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 04/14/2023] [Indexed: 06/29/2023]
Abstract
Representatives from academia, industry, regulatory agencies, and patient advocacy groups convened under the American Association for the Study of Liver Diseases (AASLD) and the European Association for the Study of the Liver (EASL) in June 2022 with the primary goal of achieving consensus on chronic HBV and HDV treatment endpoints to guide clinical trials aiming to "cure" HBV and HDV. Conference participants reached an agreement on some key points. The preferred primary endpoint for phase II/III trials evaluating finite treatments for chronic hepatitis B (CHB) is a "functional" cure, defined as sustained HBsAg loss and HBV DNA less than the lower limit of quantitation (LLOQ) 24 weeks off-treatment. An alternate endpoint would be "partial cure" defined as sustained HBsAg level <100 IU/mL and HBV DNA
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Affiliation(s)
- Marc G Ghany
- Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA.
| | - Maria Buti
- Liver Unit, Vall d'Hebron University Hospital and CIBEREHD del Instituto Carlos III, Barcelona, Spain
| | - Pietro Lampertico
- Division of Gastroenterology and Hepatology, Milan, Italy; CRC "A. M. and A. Migliavacca" Center for Liver Disease, Milan, Italy
| | - Hannah M Lee
- Department of Gastroenterology, Hepatology and Nutrition, Stravitz Sanyal Institute for Liver Disease and Metabolic Health, Virginia Commonwealth University, Richmond, Virginia, USA
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20
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Mateo R, Xu S, Shornikov A, Yazdi T, Liu Y, May L, Han B, Han D, Martin R, Manhas S, Richards C, Marceau C, Aeschbacher T, Chang S, Manuilov D, Hollnberger J, Urban S, Asselah T, Abdurakhmanov D, Lampertico P, Maiorova E, Mo H. Broad-spectrum activity of bulevirtide against clinical isolates of HDV and recombinant pan-genotypic combinations of HBV/HDV. JHEP Rep 2023; 5:100893. [PMID: 37929228 PMCID: PMC10622701 DOI: 10.1016/j.jhepr.2023.100893] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/20/2023] [Accepted: 08/07/2023] [Indexed: 11/07/2023] Open
Abstract
Background & Aims Bulevirtide (BLV) is a small lipopeptide agent that specifically binds to the sodium taurocholate cotransporting polypeptide (NTCP) bile salt transporter and HBV/HDV receptor on the surface of human hepatocytes and inhibits HDV and HBV entry. As a satellite virus of HBV, HDV virions are formed after assembly of HDV RNA with the HBV envelope proteins (HBsAg). Because both viruses exist as eight different genotypes, this creates a potential for high diversity in the HBV/HDV combinations. To investigate the sensitivity of various combinations of HBV/HDV genotypes to BLV, clinical and laboratory strains were assessed. Methods For the laboratory strains, the different envelopes from HBV genotypes A through H were combined with HDV genotypes 1-8 in cotransfection assays. Clinical plasma isolates were obtained from clinical studies and academic collaborations to maximise the diversity of HBV/HDV genotypes tested. Results The mean BLV EC50 against HDV laboratory strains ranged from 0.44 to 0.64 nM. Regardless of HBV and HDV genotypes, the clinical isolates showed similar sensitivities to BLV with mean values that ranged from 0.2 to 0.73 nM. Conclusions These data support the use of BLV in patients infected with any HBV/HDV genotypes. Impact and implications This study describes the potent activity of BLV against multiple laboratory strains spanning all HBV/HDV A-H/1-8 genotype combinations and the most diverse collection of HDV clinical samples tested to date, including HBV/HDV genotype combinations less frequently observed in the clinic. Overall, all isolates and laboratory strains displayed similar in vitro nanomolar sensitivity to BLV. This broad-spectrum antiviral activity of BLV has direct implications on potential simplified treatment for any patient infected with HDV, regardless of genotype, and supports the new 2023 EASL Clinical Practice Guidelines on HDV that recommend antiviral treatment for all patients with CHD.
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Affiliation(s)
| | - Simin Xu
- Gilead Sciences Inc., Foster City, CA, USA
| | | | | | - Yang Liu
- Gilead Sciences Inc., Foster City, CA, USA
| | | | - Bin Han
- Gilead Sciences Inc., Foster City, CA, USA
| | - Dong Han
- Gilead Sciences Inc., Foster City, CA, USA
| | | | | | | | | | | | | | | | - Julius Hollnberger
- Department of Infectious Diseases, Molecular Virology, University Hospital Heidelberg, Heidelberg, Germany
- German Center for Infection Research (DZIF), Heidelberg Partner Site, Heidelberg, Germany
| | - Stephan Urban
- Department of Infectious Diseases, Molecular Virology, University Hospital Heidelberg, Heidelberg, Germany
- German Center for Infection Research (DZIF), Heidelberg Partner Site, Heidelberg, Germany
| | - Tarik Asselah
- Université de Paris-Cité, Centre de Recherche sur l'Inflammation, INSERM UMR 1149, Hôpital Beaujon, Department of Hepatology, AP-HP, Clichy, France
| | | | - Pietro Lampertico
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- CRC 'A. M. and A. Migliavacca' Center for Liver Disease, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | | | - Hongmei Mo
- Gilead Sciences Inc., Foster City, CA, USA
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21
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Abstract
Hepatitis delta virus (HDV) only infects patients with hepatitis B virus (HBV) due to its reliance on HBV surface proteins to form its envelope. With shared routes of transmission, HDV coinfection is estimated to occur in 15% of patients with HIV and HBV. However, HDV is often underdiagnosed and may be missed particularly in people living with HIV (PLWH) who are already on antiretroviral therapy with anti-HBV activity and coincidental HBV suppression. At the same time, HDV causes the most severe form of chronic viral hepatitis and leads to faster progression of liver disease and hepatocellular carcinoma. Thus, increased recognition and effective treatment are paramount, and as novel treatment options approach global markets, the study of their efficacy in PLWH should be pursued.
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Affiliation(s)
- Debra W Yen
- Division of Digestive Diseases, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Vicente Soriano
- Health Sciences School & Medical Center, Universidad Internacional La Rioja (UNIR), Madrid, Spain
| | - Pablo Barreiro
- Public Health Regional Laboratory, Hospital Isabel Zendal, Universidad Rey Juan Carlos, Madrid, Spain
| | - Kenneth E Sherman
- Division of Digestive Diseases, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
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22
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Wedemeyer H, Lampertico P. Bulevirtide for Chronic Hepatitis D. Reply. N Engl J Med 2023; 389:1248. [PMID: 37754294 DOI: 10.1056/nejmc2309033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
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23
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Lampertico P, Degasperi E, Sandmann L, Wedemeyer H. Hepatitis D virus infection: Pathophysiology, epidemiology and treatment. Report from the first international delta cure meeting 2022. JHEP Rep 2023; 5:100818. [PMID: 37593170 PMCID: PMC10428117 DOI: 10.1016/j.jhepr.2023.100818] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/03/2023] [Accepted: 05/24/2023] [Indexed: 08/19/2023] Open
Abstract
Chronic infection with hepatitis delta virus (HDV) affects between 12-20 million people worldwide and represents the most severe form of viral hepatitis, leading to accelerated liver disease progression, cirrhosis and its complications, such as end-stage-liver disease and hepatocellular carcinoma. From the discovery of HDV in 1977 by Prof. Mario Rizzetto, knowledge on the HDV life cycle and mechanisms of viral spread has expanded. However, little is still known about the natural history of the disease, host-viral interactions, and the role of the immune system in HDV persistence. Diagnosis of HDV is still challenging due to a lack of standardised assays, while accurate viral load quantification is needed to assess response and endpoints of antiviral treatment. Until recently, interferon has represented the only treatment option in patients with chronic hepatitis delta; however, it is associated with low efficacy and a high burden of side effects. The discovery of the entry inhibitor bulevirtide has represented a breakthrough in HDV treatment, by demonstrating high rates of viral suppression in phase II and III trials, results which have been confirmed in real-world settings and in patients with compensated advanced liver disease. In the meantime, other compounds (i.e. lonafarnib, new anti-hepatitis B virus drugs) are under development to provide alternative or combined strategies for HDV cure. The first international Delta Cure meeting was organised in Milan in October 2022 with the aim of sharing and disseminating the latest data; this review summarises key takeaway messages from state-of-the-art lectures and research data on HDV.
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Affiliation(s)
- Pietro Lampertico
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- CRC “A. M. and A. Migliavacca” Center for Liver Disease, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Elisabetta Degasperi
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Lisa Sandmann
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
- Excellence Cluster RESIST, Excellence Initiative Hannover Medical School, Germany
- German Center for Infection Research (DZIF), Hannover-Braunschweig, Germany
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
- Excellence Cluster RESIST, Excellence Initiative Hannover Medical School, Germany
- German Center for Infection Research (DZIF), Hannover-Braunschweig, Germany
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24
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Wedemeyer H, Leus M, Battersby TR, Glenn J, Gordien E, Kamili S, Kapoor H, Kessler HH, Lenz O, Lütgehetmann M, Mixson-Hayden T, Simon CO, Thomson M, Westman G, Miller V, Terrault N, Lampertico P. HDV RNA assays: Performance characteristics, clinical utility, and challenges. Hepatology 2023:01515467-990000000-00551. [PMID: 37640384 DOI: 10.1097/hep.0000000000000584] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 06/15/2023] [Indexed: 08/31/2023]
Abstract
Coinfection with HBV and HDV results in hepatitis D, the most severe form of chronic viral hepatitis, frequently leading to liver decompensation and HCC. Pegylated interferon alpha, the only treatment option for chronic hepatitis D for many years, has limited efficacy. New treatments are in advanced clinical development, with one recent approval. Diagnosis and antiviral treatment response monitoring are based on detection and quantification of HDV RNA. However, the development of reliable HDV RNA assays is challenged by viral heterogeneity (at least 8 different genotypes and several subgenotypes), intrahost viral diversity, rapid viral evolution, and distinct secondary structure features of HDV RNA. Different RNA extraction methodologies, primer/probe design for nucleic acid tests, lack of automation, and overall dearth of standardization across testing laboratories contribute to substantial variability in performance characteristics of research-based and commercial HDV RNA assays. A World Health Organization (WHO) standard for HDV RNA, available for about 10 years, has been used by many laboratories to determine the limit of detection of their assays and facilitates comparisons of RNA levels across study centers. Here we review challenges for robust pan genotype HDV RNA quantification, discuss particular clinical needs and the importance of reliable HDV RNA quantification in the context of drug development and patient monitoring. We summarize distinct technical features and performance characteristics of available HDV RNA assays. Finally, we provide considerations for the use of HDV RNA assays in the context of drug development and patient monitoring.
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Affiliation(s)
- Heiner Wedemeyer
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
- Excellence Cluster RESIST, Hannover Medical School, Hannover, Germany
- D-SOLVE: EU-funded Network on Individualized Management of Hepatitis D
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Braunschweig, Germany
| | - Mitchell Leus
- Forum for Collaborative Research, School of Public Health, University of California, Berkeley, Washington DC Campus, Washington, District of Columbia, USA
| | | | - Jeffrey Glenn
- Departments of Medicine (Division of Gastroenterology and Hepatology) and Microbiology & Immunology, Stanford University School of Medicine, Stanford, California, USA
| | - Emmanuel Gordien
- Laboratoire de microbiologie clinique, Centre National de Référence pour les virus des hépatites B, C et Delta, Hôpital Avicenne Assistance Publique - Hôpitaux de Paris, Bobigny, France
| | - Saleem Kamili
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Hema Kapoor
- Ex Quest Diagnostics, HK Healthcare Consultant LLC, Secaucus, New Jersey, USA
| | - Harald H Kessler
- Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, Graz, Austria
| | - Oliver Lenz
- Clinical Microbiology and Immunology, Janssen Pharmaceutica NV, Beerse, Belgium
| | - Marc Lütgehetmann
- Institute for Microbiology, Virology and Hygiene, University Medical Center Hamburg Eppendorf (UKE), Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg, Lübeck, Kiel, Germany
| | - Tonya Mixson-Hayden
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Christian O Simon
- Clinical Development and Medical Affairs, Roche Diagnostics Solutions, Rotkreuz, Switzerland
| | - Michael Thomson
- Division of Antivirals, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Gabriel Westman
- Swedish Medical Products Agency, Uppsala, Sweden
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Veronica Miller
- Forum for Collaborative Research, School of Public Health, University of California, Berkeley, Washington DC Campus, Washington, District of Columbia, USA
| | - Norah Terrault
- Division of Gastrointestinal and Liver Diseases, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Pietro Lampertico
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, CRC "A. M. and A. Migliavacca" Center for Liver Disease, University of Milan, Milan, Italy
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25
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Becker P, Naughton FB, Brotherton DH, Pacheco-Gomez R, Beckstein O, Cameron AD. Mechanism of substrate binding and transport in BASS transporters. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.02.543391. [PMID: 37645971 PMCID: PMC10461908 DOI: 10.1101/2023.06.02.543391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The Bile Acid Sodium Symporter (BASS) family transports a wide array of molecules across membranes, including bile acids in humans, and small metabolites in plants. These transporters, many of which are sodium-coupled, have been shown to use an elevator mechanism of transport, but exactly how substrate binding is coupled to sodium ion binding and transport is not clear. Here we solve the crystal structure at 2.3 Å of a transporter from Neisseria Meningitidis (ASBTNM) in complex with pantoate, a potential substrate of ASBTNM. The BASS family is characterised by two helices that cross-over in the centre of the protein in an arrangement that is intricately held together by two sodium ions. We observe that the pantoate binds, specifically, between the N-termini of two of the opposing helices in this cross-over region. During molecular dynamics simulations the pantoate remains in this position when sodium ions are present but is more mobile in their absence. Comparison of structures in the presence and absence of pantoate demonstrates that pantoate elicits a conformational change in one of the cross-over helices. This modifies the interface between the two domains that move relative to one another to elicit the elevator mechanism. These results have implications, not only for ASBTNM but for the BASS family as a whole and indeed other transporters that work through the elevator mechanism.
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Affiliation(s)
- Patrick Becker
- School of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
| | | | - Deborah H. Brotherton
- School of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
| | | | - Oliver Beckstein
- Department of Physics, Arizona State University, Tempe, AZ 85287
| | - Alexander D. Cameron
- School of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
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26
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Majeed NA, Hitawala AA, Heller T, Koh C. Diagnosis of HDV: From virology to non-invasive markers of fibrosis. Liver Int 2023; 43 Suppl 1:31-46. [PMID: 36621853 PMCID: PMC10329733 DOI: 10.1111/liv.15515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 11/25/2022] [Accepted: 01/04/2023] [Indexed: 01/10/2023]
Abstract
Hepatitis D viral infection in humans is a disease that requires the establishment of hepatitis B, relying on hepatitis B surface Ag and host cellular machinery to replicate and propagate the infection. Since its discovery in 1977, substantial progress has been made to better understand the hepatitis D viral life cycle, pathogenesis and modes of transmission along with expanding on clinical knowledge related to prevention, diagnosis, monitoring and treatment. The availability of serologic diagnostic assays for hepatitis D infection has evolved over time with current widespread availability, improved detection and standardized reporting. With human migration, the epidemiology of hepatitis D infection has changed over time. Thus, the ability to use diagnostic assays remains essential to monitor the global impact of hepatitis D infection. Separately, while liver biopsy remains the gold standard for the staging of this rapidly progressive and severe form of chronic viral hepatitis, there is an unmet need for clinical monitoring of chronic hepatitis D infection for management of progressive disease. Thus, exploration of the utility of non-invasive fibrosis markers in hepatitis D is ongoing. In this review, we discuss the virology, the evolution of diagnostics and the development of non-invasive markers for the detection and monitoring of fibrosis in patients with hepatitis D infection.
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Affiliation(s)
- Nehna Abdul Majeed
- Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Asif A Hitawala
- Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Theo Heller
- Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Christopher Koh
- Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
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27
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Metin O, Zeybel M, Yurdaydin C. Treatment endpoints for chronic hepatitis D. Liver Int 2023; 43 Suppl 1:60-68. [PMID: 36196680 DOI: 10.1111/liv.15447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/20/2022] [Accepted: 10/03/2022] [Indexed: 02/13/2023]
Abstract
Management of chronic hepatitis D (CHD) has entered a new era. In this new era, the virus entry inhibitor bulevirtide has received conditional approval as a treatment for compensated CHD. Three phase 3 studies with two new compounds are ongoing for the treatment of CHD. In this context, surrogate markers of treatment efficacy have been well defined for chronic hepatitis B (CHB) (7) and chronic hepatitis C (8) but not for CHD. The aim of this review is to give a perspective on treatment endpoints in CHD. For this, we took guidance from CHB studies and tried to make suggestions which differed according to finite versus prolonged treatment durations and also took into account the different characteristics of the new compounds.
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Affiliation(s)
- Olga Metin
- Department of Gastroenterology, Prof. Cemil Taşçioğlu City Hospital, Istanbul, Turkey
| | - Müjdat Zeybel
- Department of Gastroenterology and Hepatology, Koç University Medical School, Istanbul, Turkey
| | - Cihan Yurdaydin
- Department of Gastroenterology and Hepatology, Koç University Medical School, Istanbul, Turkey
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28
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Jachs M, Panzer M, Hartl L, Schwarz M, Balcar L, Camp JV, Munda P, Mandorfer M, Trauner M, Aberle SW, Zoller H, Reiberger T, Ferenci P. Long-term follow-up of patients discontinuing bulevirtide treatment upon long-term HDV-RNA suppression. JHEP Rep 2023; 5:100751. [PMID: 37360907 PMCID: PMC10285645 DOI: 10.1016/j.jhepr.2023.100751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 03/17/2023] [Indexed: 06/28/2023] Open
Abstract
Background & Aims Bulevirtide (BLV) is a novel antiviral drug licensed for the treatment of chronic hepatitis D. Data on the safety and efficacy of stopping BLV therapy upon long-term HDV-RNA suppression are scarce. Methods A total of seven patients (age, 31-68 years, four with cirrhosis) included in a prospective Austrian HDV registry discontinued BLV treatment (duration, 46-141 weeks) upon long-term HDV suppression (HDV-RNA negativity, 12-69 weeks). Pegylated interferon-ɑ2a was used in combination with BLV in two patients. HDV-RNA, alanine aminotransferase, and quantitative HBsAg levels were closely monitored during treatment-free follow-up. Results The seven patients were followed up for 14 to 112 weeks. Six patients completed ≥24 weeks of follow-up. HDV-RNA became detectable again in three patients within 24 weeks, whereas one additional patient showed an HDV-RNA relapse after almost 1 year. All patients who relapsed at any point had undergone BLV monotherapy. Meanwhile, HDV-RNA remained undetectable in two patients who were treated with BLV + pegylated interferon-ɑ2a. Only one patient showed significant alanine aminotransferase increases within 24 weeks of follow-up. BLV was reintroduced in three patients after 13-62 BLV-free weeks and was well tolerated, and all patients achieved virologic response again. Conclusions BLV discontinuation upon long-term HDV-RNA suppression seems safe. Retreatment with BLV was effective in case of virologic relapse. These findings are within a limited number of patients, and future studies are needed to define stopping rules and further investigate the safety of stopping BLV. Impact and Implications Limited data exist on stopping bulevirtide (BLV) treatment in patients who achieve long-term HDV-RNA suppression. In a small cohort of seven Austrian patients discontinuing BLV therapy, HDV-RNA relapses were observed in four patients during long-term follow-up, whereas significant alanine aminotransferase increases were recorded in only one. Retreatment with BLV was effective in relapsers. The safety and efficacy of stopping BLV needs to be further studied in larger cohorts.
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Affiliation(s)
- Mathias Jachs
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | - Marlene Panzer
- Department of Medicine I and Christian Doppler Laboratory on Iron and Phosphate Biology, Medical University of Innsbruck, Innsbruck, Austria
| | - Lukas Hartl
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | - Michael Schwarz
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | - Lorenz Balcar
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | - Jeremy V. Camp
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Petra Munda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | - Mattias Mandorfer
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | | | - Heinz Zoller
- Department of Medicine I and Christian Doppler Laboratory on Iron and Phosphate Biology, Medical University of Innsbruck, Innsbruck, Austria
| | - Thomas Reiberger
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Rare Liver Disease (RALID) Center of the European Reference Network for Rare Hepatological Diseases (ERN RARE-LIVER), Medical University Vienna, Vienna, Austria
| | - Peter Ferenci
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
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29
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Pearlman B. Hepatitis Delta Infection: A Clinical Review. Semin Liver Dis 2023; 43:293-304. [PMID: 37473778 PMCID: PMC10620035 DOI: 10.1055/a-2133-8614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
First discovered over 40 years ago, the hepatitis delta virus (HDV) is a unique RNA virus, requiring hepatitis B virus (HBV) antigens for its assembly, replication, and transmission. HBV and HDV can be acquired at the same time (coinfection) or HDV infection can occur in persons with chronic HBV (superinfection). Screening guidelines for HDV are inconsistent. While some guidelines recommend universal screening for all people with HBV, others recommend risk-based screening. Estimates of the global HDV prevalence range from 4.5 to 14.6% among persons with HBV; thus, there may be up to 72 million individuals with HDV worldwide. HDV is the most severe form of viral hepatitis. Compared to HBV monoinfection, HDV coinfection increases the risk of cirrhosis, hepatocellular carcinoma, hepatic decompensation, mortality, and necessity for liver transplant. Despite the severity of HDV, there are few treatment options. Pegylated interferon (off-label use) has long been the only available treatment, although bulevirtide is conditionally approved in some European countries. There are many potential treatments in development, but as yet, there are few effective and safe therapies for HDV infection. In conclusion, given the severity of HDV disease and the paucity of treatments, there is a great unmet need for HDV therapies.
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Affiliation(s)
- Brian Pearlman
- Department of Internal Medicine, Wellstar Atlanta Medical Center, Medical College of Georgia, Emory School of Medicine, Atlanta, Georgia
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30
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Brunetto MR, Ricco G, Negro F, Wedemeyer H, Yurdaydin C, Asselah T, Papatheodoridis G, Gheorghe L, Agarwal K, Farci P, Buti M. EASL Clinical Practice Guidelines on hepatitis delta virus. J Hepatol 2023; 79:433-460. [PMID: 37364791 DOI: 10.1016/j.jhep.2023.05.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 05/01/2023] [Indexed: 06/28/2023]
Abstract
Hepatitis D virus (HDV) is a defective virus that requires the hepatitis B virus to complete its life cycle and cause liver damage in humans. HDV is responsible for rare acute and chronic liver diseases and is considered the most aggressive hepatitis virus. Acute infection can cause acute liver failure, while persistent infection typically causes a severe form of chronic hepatitis which is associated with rapid and frequent progression to cirrhosis and its end-stage complications, hepatic decompensation and hepatocellular carcinoma. Major diagnostic and therapeutic innovations prompted the EASL Governing Board to commission specific Clinical Practice Guidelines on the identification, virologic and clinical characterisation, prognostic assessment, and appropriate clinical and therapeutic management of HDV-infected individuals.
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31
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Maasoumy B, Lampertico P. Hepatitis Delta: Ready for primetime? Liver Int 2023; 43 Suppl 1:1-4. [PMID: 37658668 DOI: 10.1111/liv.15679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 09/03/2023]
Affiliation(s)
- Benjamin Maasoumy
- Department of Gastroenterology, Hepatology, Infectious Diseases and Endocrinology, Hannover Medical School, Hannover, Germany
- German Centre for Infection Research (DZIF), Braunschweig, Germany
| | - Pietro Lampertico
- Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- CRC "A. M. and A. Migliavacca" Center for Liver Disease, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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32
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Bhatti TK, Singal AK, Kwo PY. Viral Hepatitis and Acute-on-Chronic Liver Failure. Clin Liver Dis 2023; 27:617-630. [PMID: 37380286 DOI: 10.1016/j.cld.2023.03.006] [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: 06/30/2023]
Abstract
Acute-on-chronic liver failure (ACLF) is a potentially reversible syndrome that develops in patients with cirrhosis or with underlying chronic liver disease (CLD) and is characterized by acute decompensation, organ failure, and high short-term mortality. Hepatitis A and hepatitis E are major causes of ACLF. Hepatitis B may also cause ACLF through a flare of hepatitis B, acute infection, or reactivation. Besides supportive care, nucleoside/nucleotide analog therapy should also be initiated in this setting. Nonhepatotropic viruses may rarely also cause ACLF with the severe acute respiratory syndrome coronavirus 2 virus recently being identified with poorer outcomes in those with underlying CLD.
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Affiliation(s)
| | - Ashwani K Singal
- University of SD Sanford School of Medicine, Sioux Falls, SD, USA
| | - Paul Y Kwo
- Stanford University School of Medicine, Palo Alto, CA, USA.
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33
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Affiliation(s)
- Tarik Asselah
- From Université de Paris-Cité, Hôpital Beaujon, Department of Hepatology, Assistance Publique-Hôpitaux de Paris, and INSERM Unité Mixte de Recherche 1149, Clichy, France (T.A.); and the Department of Medical Sciences, University of Turin, Turin, Italy (M.R.)
| | - Mario Rizzetto
- From Université de Paris-Cité, Hôpital Beaujon, Department of Hepatology, Assistance Publique-Hôpitaux de Paris, and INSERM Unité Mixte de Recherche 1149, Clichy, France (T.A.); and the Department of Medical Sciences, University of Turin, Turin, Italy (M.R.)
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34
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Wedemeyer H, Aleman S, Brunetto MR, Blank A, Andreone P, Bogomolov P, Chulanov V, Mamonova N, Geyvandova N, Morozov V, Sagalova O, Stepanova T, Berger A, Manuilov D, Suri V, An Q, Da B, Flaherty J, Osinusi A, Liu Y, Merle U, Schulze Zur Wiesch J, Zeuzem S, Ciesek S, Cornberg M, Lampertico P. A Phase 3, Randomized Trial of Bulevirtide in Chronic Hepatitis D. N Engl J Med 2023; 389:22-32. [PMID: 37345876 DOI: 10.1056/nejmoa2213429] [Citation(s) in RCA: 57] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Abstract
BACKGROUND Coinfection with hepatitis D virus (HDV) accelerates the progression of liver disease associated with chronic hepatitis B. Bulevirtide inhibits the entry of HDV into hepatocytes. METHODS In this ongoing phase 3 trial, patients with chronic hepatitis D, with or without compensated cirrhosis, were randomly assigned, in a 1:1:1 ratio, to receive bulevirtide subcutaneously at 2 mg per day (2-mg group) or 10 mg per day (10-mg group) for 144 weeks or to receive no treatment for 48 weeks followed by bulevirtide subcutaneously at 10 mg per day for 96 weeks (control group). Patients will complete 96 weeks of additional follow-up after the end of treatment. The primary end point was a combined response at week 48 of an undetectable HDV RNA level, or a level that decreased by at least 2 log10 IU per milliliter from baseline, and normalization of the alanine aminotransferase (ALT) level. The key secondary end point was an undetectable HDV RNA level at week 48, in a comparison between the 2-mg group and the 10-mg group. RESULTS A total of 49 patients were assigned to the 2-mg group, 50 to the 10-mg group, and 51 to the control group. A primary end-point response occurred in 45% of patients in the 2-mg group, 48% in the 10-mg group, and 2% in the control group (P<0.001 for the comparison of each dose group with the control group). The HDV RNA level at week 48 was undetectable in 12% of patients in the 2-mg group and in 20% in the 10-mg group (P = 0.41). The ALT level normalized in 12% of patients in the control group, 51% in the 2-mg group (difference from control, 39 percentage points [95% confidence interval {CI}, 20 to 56]), and 56% in the 10-mg group (difference from control, 44 percentage points [95% CI, 26 to 60]). Loss of hepatitis B virus surface antigen (HBsAg) or an HBsAg level that decreased by at least 1 log10 IU per milliliter did not occur in the bulevirtide groups by week 48. Headache, pruritus, fatigue, eosinophilia, injection-site reactions, upper abdominal pain, arthralgia, and asthenia were more common in the 2-mg and 10-mg groups combined than in the control group. No treatment-related serious adverse events occurred. Dose-dependent increases in bile acid levels were noted in the 2-mg and 10-mg groups. CONCLUSIONS After 48 weeks of bulevirtide treatment, HDV RNA and ALT levels were reduced in patients with chronic hepatitis D. (Funded by Gilead Sciences; MYR 301 ClinicalTrials.gov number, NCT03852719.).
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Affiliation(s)
- Heiner Wedemeyer
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Soo Aleman
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Maurizia Rossana Brunetto
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Antje Blank
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Pietro Andreone
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Pavel Bogomolov
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Vladimir Chulanov
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Nina Mamonova
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Natalia Geyvandova
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Viacheslav Morozov
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Olga Sagalova
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Tatyana Stepanova
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Annemarie Berger
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Dmitry Manuilov
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Vithika Suri
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Qi An
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Ben Da
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - John Flaherty
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Anu Osinusi
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Yang Liu
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Uta Merle
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Julian Schulze Zur Wiesch
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Stefan Zeuzem
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Sandra Ciesek
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Markus Cornberg
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
| | - Pietro Lampertico
- From Medizinische Hochschule Hannover, Excellence Cluster RESIST, and D-SOLVE Consortium (H.W., M.C.), Hannover, German Center for Infection Research (DZIF) Partner Site Hannover-Braunschweig, Braunschweig (H.W., M.C.), Clinical Pharmacology and Pharmacoepidemiology and DZIF Partner Site Heidelberg (A. Blank) and the Department of Internal Medicine IV (U.M.), Heidelberg University Hospital, Heidelberg, the Institute of Medical Virology (A. Berger, S.C.), the Department of Internal Medicine, University Hospital Frankfurt (S.Z.), DZIF (S.C.), and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP (S.C.), Frankfurt, and Universitätsklinikum Hamburg-Eppendorf, Medizinische Klinik, and DZIF, Hamburg-Lübeck-Borstel-Riems, Hamburg (J.S.W.) - all in Germany; the Department of Infectious Diseases, Karolinska University Hospital, Karolinska Institutet, Stockholm (S.A.); the Department of Clinical and Experimental Medicine, University of Pisa, and the Hepatology Unit, Pisa University Hospital, Pisa (M.R.B.), the Division of Internal Medicine, University of Modena and Reggio Emilia, Modena (P.A.), and the Division of Gastroenterology and Hepatology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, CRC "A. M. and A. Migliavacca" Center for Liver Disease, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (P.L.) - all in Italy; M.F. Vladimirsky Moscow Regional Research and Clinical Institute (P.B.), National Medical Research Center of Tuberculosis and Infectious Diseases, Ministry of Health (V.C.), Sechenov University (V.C.), and the Clinic of Modern Medicine (T.S.), Moscow, the National Medical Research Center of Physiopulmonology and Infectious Diseases, Yekaterinburg (N.M.), Stavropol Regional Clinical Hospital, Stavropol (N.G.), Hepatolog, Samara (V.M.), and Southern Ural State Medical University, Chelyabinsk (O.S.) - all in Russia; and Gilead Sciences, Foster City, CA (D.M., V.S., Q.A., B.D., J.F., A.O., Y.L.)
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35
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Feld JJ, Lok AS, Zoulim F. New Perspectives on Development of Curative Strategies for Chronic Hepatitis B. Clin Gastroenterol Hepatol 2023; 21:2040-2050. [PMID: 37080262 DOI: 10.1016/j.cgh.2023.02.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/24/2023] [Accepted: 02/28/2023] [Indexed: 04/22/2023]
Abstract
A functional cure of chronic hepatitis B defined as sustained hepatitis B surface antigen loss after finite course of therapy is rarely achieved with current therapy but is the goal of novel treatments. Understanding the virological and immunological mechanisms of hepatitis B virus persistence has enabled the identification of novel treatment targets, drug discovery, and the evaluation of novel agents in clinical trials. Lessons were learned from early phase 1 and phase 2 trials regarding the antiviral activity and safety profile of these agents. There is a strong rationale to combine agents to reduce viral replication, reduce viral antigen load, invigorate immune responses, and induce specific adaptive immune responses. Nucleos(t)ide analogs will likely remain an essential backbone of future combinations to control viral replication and prevent resistance to antiviral drugs. In this review, we discuss perspectives on approaches to achieving functional cure, with a review of virological and immunological strategies, highlighting challenges and unresolved questions with the various attempts to achieve cure, as well as exploring alternative endpoints such as partial cure and new noninvasive viral and immunological biomarkers to stratify patients and predict/monitor antiviral response.
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Affiliation(s)
- Jordan J Feld
- Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, Ontario, Canada.
| | - Anna S Lok
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan
| | - Fabien Zoulim
- INSERM Unit 1052 - Cancer Research Center of Lyon, Lyon Hepatology Institute, Hospices Civils de Lyon, Université Claude Bernard Lyon 1, Lyon, France
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36
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Olsen K, Mahgoub S, Al-Shakhshir S, Algieder A, Atabani S, Bannaga A, Elsharkawy AM. Recent treatment advances and practical management of hepatitis D virus. Clin Med (Lond) 2023; 23:403-408. [PMID: 38614656 PMCID: PMC10541033 DOI: 10.7861/clinmed.2022-0556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
Abstract
Hepatitis D virus (HDV), also referred to as hepatitis delta virus, is the smallest virus capable of causing human disease. It is unable to replicate on its own and can only propagate in the presence of hepatitis B virus (HBV). Infection with both HBV and HDV frequently results in more severe disease than HBV alone, with higher instances of cirrhosis, liver failure and hepatocellular carcinoma (HCC). Thus, there is a need for effective treatment for HDV; however, currently approved treatment options are very limited both in terms of their efficacy and availability. This makes the management of HDV a challenge for physicians. In this review, we look at the background, diagnosis and treatment of HDV, informed by our hospital data, to set out the optimal management of HDV; we also explore novel treatment options for this disease.
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Affiliation(s)
- Kathryn Olsen
- Liver Unit, Queen Elizabeth Hospital Birmingham, Birmingham, UK
| | - Sara Mahgoub
- Liver Unit, Queen Elizabeth Hospital Birmingham, Birmingham, UK
| | | | - Akram Algieder
- Liver Unit, Queen Elizabeth Hospital Birmingham, Birmingham, UK
| | | | - Ayman Bannaga
- Queen Elizabeth Hospital Birmingham, Birmingham, UK.
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Xu HY, Yang JO, Chen PH, Han SHB. Bulevirtide and emerging drugs for the treatment of hepatitis D. Expert Opin Biol Ther 2023; 23:1245-1253. [PMID: 37853604 DOI: 10.1080/14712598.2023.2273260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023]
Abstract
INTRODUCTION Hepatitis delta virus (HDV) causes acute and chronic liver disease that requires the co-infection of the Hepatitis B virus and can lead to significant morbidity and mortality. Bulevirtide is a recently introduced entry inhibitor drug that acts on the sodium taurocholate cotransporting peptide, thereby preventing viral entry to target cells in chronic HDV infection. The mainstay of chronic HDV therapy prior to bulevirtide was interferon alpha, which has an undesirable side effect profile. AREAS COVERED We review bulevirtide data from recent clinical trials in Europe and the United States. Challenges to development and implementation of bulevirtide are discussed. Additionally, we review ongoing trials of emerging drugs for HDV, such as pegylated interferon lambda and lonafarnib. EXPERT OPINION Bulevirtide represents a major shift in treatment for chronic HDV, for which there is significant unmet need. Trials that compared bulevirtide in combination with interferon alpha vs interferon alpha monotherapy demonstrated significant increase in virologic response. Overall, treatment with different doses of bulevirtide were comparable. Bulevirtide was generally well tolerated, and no serious adverse events occurred. Understanding the true prevalence of HDV, as well as continued studies of emerging drugs will prove valuable to the larger goal of eradication of Hepatitis D.
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Affiliation(s)
- Helen Y Xu
- Department of Medicine, UCLA Health, Los Angeles, CA, USA
| | - Jamie O Yang
- Department of Medicine, UCLA Health, Los Angeles, CA, USA
| | - Phillip H Chen
- Clinical Fellow in Gastroenterology, Department of Gastroenterology, UCLA Health, Los Angeles, CA, USA
| | - Steven-Huy B Han
- Pfleger Liver Institute, UCLA Health, 200 Medical Plaza, Los Angeles, CA, USA
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Deterding K, Xu C, Port K, Dietz-Fricke C, Xun J, Maasoumy B, Cornberg M, Wedemeyer H. Bile acid increase during bulevirtide treatment of hepatitis D is not associated with a decline in HDV RNA. J Viral Hepat 2023; 30:597-606. [PMID: 36924318 DOI: 10.1111/jvh.13831] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/27/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023]
Abstract
Bulevirtide (BLV) is an entry inhibitor blocking entry of HBsAg into hepatocytes by interfering with the bile acid transporter Na+-taurocholate co-transporting polypeptide. We here investigated if bile acid levels before or during BLV treatment would correlate with HDV RNA declines. We studied 20 patients with compensated HDV infection receiving a daily dose of 2 mg bulevirtide subcutaneously qd for at least 24 weeks. ALT levels improved in all patients including 13/20 patients showing normal ALT values at treatment Week 24. An HDV RNA drop of at least 50% was evident in 20/20 patients at Week 24 including 10 patients showing a ≥ 2 log HDV RNA decline. Elevated bile acid levels were detected already before treatment in 10 patients and further increased during BLV administration with different kinetics. Baseline bile acids were associated with higher transient elastography values (p = .0029) and evidence of portal hypertension (p = .0004). Bile acid levels before treatment were associated with HDV RNA declines throughout therapy, but not at Week 24 (rho = -0.577; p = .0078; rho = -0.635, p = .0026; rho = -0.577, p = .0077; rho = -0.519, p = .0191; rho = -0.564, p = .0119 and rho = -0.393, p = .087 at treatment Weeks 2, 8, 12, 16, 20 and 24, respectively). However, bile acid increases during treatment were not associated with HDV RNA or ALT declines at any of the time points. BLV-induced increases in bile salts do not correlate with HDV RNA declines suggesting that the inhibitory effects of BLV on NTCP differ between blocking bile acid transport and hindering HBsAg entry. If baseline bile salt levels could be useful to predict virological response remains to be confirmed.
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Affiliation(s)
- Katja Deterding
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Chengjian Xu
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
- Center for Individualized Infection Medicine, CiiM, a joint venture between Hannover Medical School and the Helmholtz Center for Infection Research, Hannover, Germany
- TWINCORE, a joint venture between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany
| | - Kerstin Port
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Christopher Dietz-Fricke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Jiang Xun
- Center for Individualized Infection Medicine, CiiM, a joint venture between Hannover Medical School and the Helmholtz Center for Infection Research, Hannover, Germany
- TWINCORE, a joint venture between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany
| | - Benjamin Maasoumy
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
- German Centre for Infection Research (DZIF), Hannover-Braunschweig, Germany
| | - Markus Cornberg
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
- Center for Individualized Infection Medicine, CiiM, a joint venture between Hannover Medical School and the Helmholtz Center for Infection Research, Hannover, Germany
- TWINCORE, a joint venture between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany
- German Centre for Infection Research (DZIF), Hannover-Braunschweig, Germany
- D-SOLVE consortium, an EU Horizon Europe funded project (No 101057917)
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
- TWINCORE, a joint venture between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany
- D-SOLVE consortium, an EU Horizon Europe funded project (No 101057917)
- Excellence Cluster Resist, Hannover Medical School, Hannover, Germany
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Hermanussen L, Lampalzer S, Bockmann JH, Ziegler AE, Piecha F, Dandri M, Pischke S, Haag F, Lohse AW, Lütgehetmann M, Weiler-Normann C, zur Wiesch JS. Non-organ-specific autoantibodies with unspecific patterns are a frequent para-infectious feature of chronic hepatitis D. Front Med (Lausanne) 2023; 10:1169096. [PMID: 37387781 PMCID: PMC10300640 DOI: 10.3389/fmed.2023.1169096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 05/18/2023] [Indexed: 07/01/2023] Open
Abstract
Infections with hepatotropic viruses are associated with various immune phenomena. Hepatitis D virus (HDV) causes the most severe form of viral hepatitis. However, few recent data are available on non-disease-specific and non-organ-specific antibody (NOSA) titers and immunoglobulin G (IgG) levels in chronic hepatitis D (CHD) patients. Here, we examined the NOSA titers and IgG levels of 40 patients with CHD and different disease courses and compared them to 70 patients with chronic hepatitis B (CHB) infection. 43% of CHD patients had previously undergone treatment with pegylated interferon-α (IFN-α). The antibody display of 46 untreated patients diagnosed with autoimmune hepatitis (AIH) was used as a reference. The frequency of elevated NOSA titers (CHD 69% vs. CHB 43%, p < 0.01), and the median IgG levels (CHD 16.9 g/L vs. CHB 12.7 g/L, p < 0.01) were significantly higher in CHD patients than in patients with CHB, and highest in patients with AIH (96%, 19.5 g/L). Also, the antinuclear antibody pattern was homogeneous in many patients with AIH and unspecific in patients with viral hepatitis. Additionally, f-actin autoantibodies were only detectable in patients with AIH (39% of SMA). In CHD patients, IgG levels correlated with higher HDV viral loads, transaminases, and liver stiffness values. IgG levels and NOSA were similar in CHD patients irrespective of a previous IFN-α treatment. In summary, autoantibodies with an unspecific pattern are frequently detected in CHD patients with unclear clinical relevance.
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Affiliation(s)
- Lennart Hermanussen
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Sibylle Lampalzer
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Jan-Hendrik Bockmann
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, Hamburg, Germany
| | - Annerose E. Ziegler
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Felix Piecha
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, Hamburg, Germany
| | - Maura Dandri
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, Hamburg, Germany
| | - Sven Pischke
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, Hamburg, Germany
| | - Friedrich Haag
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ansgar W. Lohse
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, Hamburg, Germany
| | - Marc Lütgehetmann
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, Hamburg, Germany
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Christina Weiler-Normann
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- Department of Medicine and Martin Zeitz Centre for Rare Diseases, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Julian Schulze zur Wiesch
- Department of Medicine (Gastroenterology, Hepatology, Infectious diseases, and Tropical Medicine), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, Hamburg, Germany
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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40
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Schlaak JF. Current Therapy of Chronic Viral Hepatitis B, C and D. J Pers Med 2023; 13:964. [PMID: 37373953 DOI: 10.3390/jpm13060964] [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: 03/25/2023] [Revised: 05/22/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
The majority of chronic viral hepatitis cases are induced via infection with the hepatitis B virus (HBV), hepatitis C virus (HCV), or hepatitis D virus (HDV). These patients are at increased risk for progressive liver disease leading to cirrhosis as well as hepatocellular carcinoma (HCC). HBV infection is well controlled by the currently available nucleosides as well as nucleotides, and the development of cirrhosis can be prevented. Additionally, it has been shown that HBV-induced liver fibrosis can regress during successful antiviral treatment; however, a "functional cure", i.e., loss of HBsAg, is a rare event when these drugs are used. Therefore, novel therapeutic strategies are aiming at the selective suppression of HBsAg levels in combination with immunostimulation. The development of directly acting antivirals (DAAs) has revolutionized HCV therapy, as almost all patients can be cured via this treatment. Additionally, DAA therapy has few, if any, side effects, and is generally well tolerated by patients. HDV remains the most challenging type of chronic viral hepatitis. Although novel therapeutic options have recently been approved, response rates are still less favorable compared to HBV and HCV. This review discusses current and future options for the treatment of chronic HBV, HCV, and HDV infection.
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Affiliation(s)
- Jörg F Schlaak
- Department of Internal Medicine, Ameos Hospital Oberhausen, Wilhelmstr. 34, 46145 Oberhausen, Germany
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41
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Keskin O, Yurdaydin C. Emerging drugs for hepatitis D. Expert Opin Emerg Drugs 2023:1-12. [PMID: 37096555 DOI: 10.1080/14728214.2023.2205639] [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: 04/26/2023]
Abstract
INTRODUCTION Chronic hepatitis delta (CHD) is the most severe form of chronic viral hepatitis. Until recently, its treatment consisted of pegylated interferon alfa (pegIFN) use. AREAS COVERED Current and new drugs for treating CHD. Virus entry inhibitor bulevirtide has received conditional approval by the European Medicines Agency. Prenylation inhibitor lonafarnib and pegIFN lambda are in phase 3 and nucleic acid polymers in phase 2 of drug development. EXPERT OPINION Bulevirtide appears to be safe. Its antiviral efficacy increases with treatment duration. Combining bulevirtide with pegIFN has the highest antiviral efficacy short-term. The prenylation inhibitor lonafarnib prevents hepatitis D virus assembly. It is associated with dose dependent gastrointestinal toxicity and is better used with ritonavir which increases liver lonafarnib concentrations. Lonafarnib also possesses immune modulatory properties which explains some post-treatment beneficial flare cases. Combining lonafarnib/ritonavir with pegIFN has superior antiviral efficacy. Nucleic acid polymers are amphipathic oligonucleotides whose effect appears to be a consequence of phosphorothioate modification of internucleotide linkages. These compounds led to HBsAg clearance in a sizeable proportion of patients. PegIFN lambda is associated with less IFN typical side effects. In a phase 2 study it led to 6 months off treatment viral response in one third of patients.
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Affiliation(s)
- Onur Keskin
- Department of Gastroenterology, Hacettepe University Medical School, Ankara, Turkey
| | - Cihan Yurdaydin
- Department of Gastroenterology & Hepatology, Koc University Medical School, Istanbul, Turkey
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42
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Dietz-Fricke C, Tacke F, Zöllner C, Demir M, Schmidt HH, Schramm C, Willuweit K, Lange CM, Weber S, Denk G, Berg CP, Grottenthaler JM, Merle U, Olkus A, Zeuzem S, Sprinzl K, Berg T, van Bömmel F, Wiegand J, Herta T, Seufferlein T, Zizer E, Dikopoulos N, Thimme R, Neumann-Haefelin C, Galle PR, Sprinzl M, Lohse AW, Schulze zur Wiesch J, Kempski J, Geier A, Reiter FP, Schlevogt B, Gödiker J, Hofmann WP, Buggisch P, Kahlhöfer J, Port K, Maasoumy B, Cornberg M, Wedemeyer H, Deterding K. Treating hepatitis D with bulevirtide - Real-world experience from 114 patients. JHEP Rep 2023; 5:100686. [PMID: 37025462 PMCID: PMC10071092 DOI: 10.1016/j.jhepr.2023.100686] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/13/2022] [Accepted: 12/23/2022] [Indexed: 04/08/2023] Open
Abstract
Background & Aims Bulevirtide is a first-in-class entry inhibitor of hepatitis B surface antigen. In July 2020, bulevirtide was conditionally approved for the treatment of hepatitis D, the most severe form of viral hepatitis, which frequently causes end-stage liver disease and hepatocellular carcinoma. Herein, we report the first data from a large multicenter real-world cohort of patients with hepatitis D treated with bulevirtide at a daily dose of 2 mg without additional interferon. Methods In a joint effort with 16 hepatological centers, we collected anonymized retrospective data from patients treated with bulevirtide for chronic hepatitis D. Results Our analysis is based on data from 114 patients, including 59 (52%) with cirrhosis, receiving a total of 4,289 weeks of bulevirtide treatment. A virologic response defined as an HDV RNA decline of at least 2 log or undetectable HDV RNA was observed in 87/114 (76%) cases with a mean time to virologic response of 23 weeks. In 11 cases, a virologic breakthrough (>1 log-increase in HDV RNA after virologic response) was observed. After 24 weeks of treatment, 19/33 patients (58%) had a virologic response, while three patients (9%) did not achieve a 1 log HDV RNA decline. No patient lost hepatitis B surface antigen. Alanine aminotransferase levels improved even in patients not achieving a virologic response, including five patients who had decompensated cirrhosis at the start of treatment. Treatment was well tolerated and there were no reports of drug-related serious adverse events. Conclusions In conclusion, we confirm the safety and efficacy of bulevirtide monotherapy in a large real-world cohort of patients with hepatitis D treated in Germany. Future studies need to explore the long-term benefits and optimal duration of bulevirtide treatment. Impact and implications Clinical trials proved the efficacy of bulevirtide for chronic hepatitis D and led to conditional approval by the European Medical Agency. Now it is of great interest to investigate the effects of bulevirtide treatment in a real-world setting. In this work, we included data from 114 patients with chronic hepatitis D who were treated with bulevirtide at 16 German centers. A virologic response was seen in 87/114 cases. After 24 weeks of treatment, only a small proportion of patients did not respond to treatment. At the same time, signs of liver inflammation improved. This observation was independent from changes in hepatitis D viral load. The treatment was generally well tolerated. In the future, it will be of interest to investigate the long-term effects of this new treatment.
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Affiliation(s)
- Christopher Dietz-Fricke
- Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany
| | - Frank Tacke
- Department of Hepatology and Gastroenterology, Charité Universitätsmedizin Berlin, Campus Virchow-Klinikum (CVK) and Campus Charité Mitte (CCM), Berlin, Germany
| | - Caroline Zöllner
- Department of Hepatology and Gastroenterology, Charité Universitätsmedizin Berlin, Campus Virchow-Klinikum (CVK) and Campus Charité Mitte (CCM), Berlin, Germany
| | - Münevver Demir
- Department of Hepatology and Gastroenterology, Charité Universitätsmedizin Berlin, Campus Virchow-Klinikum (CVK) and Campus Charité Mitte (CCM), Berlin, Germany
| | - Hartmut H. Schmidt
- Department of Gastroenterology, Hepatology and Transplant Medicine, Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - Christoph Schramm
- Department of Gastroenterology, Hepatology and Transplant Medicine, Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - Katharina Willuweit
- Department of Gastroenterology, Hepatology and Transplant Medicine, Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - Christian M. Lange
- Department of Medicine II, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
| | - Sabine Weber
- Department of Medicine II, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
| | - Gerald Denk
- Department of Medicine II, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
| | - Christoph P. Berg
- Department of Gastroenterology, Gastrointestinal Oncology, Hepatology, Infectiology, and Geriatrics, University Hospital Tuebingen, Tuebingen, Germany
| | - Julia M. Grottenthaler
- Department of Gastroenterology, Gastrointestinal Oncology, Hepatology, Infectiology, and Geriatrics, University Hospital Tuebingen, Tuebingen, Germany
| | - Uta Merle
- Department of Internal Medicine IV, University of Heidelberg, Heidelberg, Germany
| | - Alexander Olkus
- Department of Internal Medicine IV, University of Heidelberg, Heidelberg, Germany
| | - Stefan Zeuzem
- Internal Medicine Department, Goethe University Hospital, Frankfurt, Germany
| | - Kathrin Sprinzl
- Internal Medicine Department, Goethe University Hospital, Frankfurt, Germany
| | - Thomas Berg
- Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Leipzig, Germany
| | - Florian van Bömmel
- Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Leipzig, Germany
| | - Johannes Wiegand
- Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Leipzig, Germany
| | - Toni Herta
- Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Leipzig, Germany
| | | | - Eugen Zizer
- Department of Internal Medicine I, University of Ulm, Ulm, Germany
| | | | - Robert Thimme
- Department of Medicine II, University Medical Centre Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Neumann-Haefelin
- Department of Medicine II, University Medical Centre Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Peter R. Galle
- Department of Medicine I, University Medical Center of the Johannes-Gutenberg University, Mainz, Germany
| | - Martin Sprinzl
- Department of Medicine I, University Medical Center of the Johannes-Gutenberg University, Mainz, Germany
| | - Ansgar W. Lohse
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Julian Schulze zur Wiesch
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg - Lübeck - Borstel - Riems, Hamburg, Germany
| | - Jan Kempski
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Mildred Scheel Cancer Career Center HaTriCS, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andreas Geier
- University Hospital Würzburg, Division of Hepatology, Dept. of Medicine II, Würzburg, Germany
| | - Florian P. Reiter
- University Hospital Würzburg, Division of Hepatology, Dept. of Medicine II, Würzburg, Germany
| | | | - Juliana Gödiker
- Department of Medicine B, University Hospital Münster, Münster, Germany
| | | | - Peter Buggisch
- Ifi-Institute for Interdisciplinary Medicine, Hamburg, Germany
| | - Julia Kahlhöfer
- Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany
| | - Kerstin Port
- Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany
| | - Benjamin Maasoumy
- Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany
| | - Markus Cornberg
- Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany
- D-SOLVE consortium, a EU Horizon Europe funded project (No 101057917)
- Centre for Individualised Infection Medicine (CiiM), a Joint Venture Between the Helmholtz Centre for Infection Research (HZI) and Hannover Medical School (MHH), Hannover, Germany
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany
- Excellence Cluster Resist, Hannover Medical School, Germany
- German Centre for Infection Research (DZIF), Hannover-Braunschweig, Germany
- D-SOLVE consortium, a EU Horizon Europe funded project (No 101057917)
| | - Katja Deterding
- Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany
- Corresponding author. Address: Department of Gastroenterology, Hepatology and Endocrinology at Hannover Medical School, Hannover, Germany.
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Sandmann L, Deterding K, Bremer B, Port K, Cornberg M, Wedemeyer H, Maasoumy B. Kinetics and predictive value of HBcrAg, HBV RNA and anti-HBc during bulevirtide treatment of chronic HDV-infected patients. J Viral Hepat 2023; 30:283-286. [PMID: 36648369 DOI: 10.1111/jvh.13804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/18/2023]
Abstract
The entry inhibitor bulevirtide (BLV) is a new treatment option for patients with chronic hepatitis D virus (HDV) infection and compensated liver disease. The aim of this study was to investigate the kinetic and predictive value of markers reflecting HBV cccDNA transcriptional activity and host immune response activity during BLV treatment in a real-life cohort of HDV infected patients. Levels of HDV RNA, HBV RNA, hepatitis B core related antigen (HBcrAg) and hepatitis B core antibodies (anti-HBc) were measured in 16 patients before (BL), after three (3M) and six (6M) months of treatment with BLV. All patients received nucleos(t)ide analogue treatment. HDV RNA declined in all patients during treatment. 38% (6/16) showed ≥ 2 log HDV RNA decline from BL to 6M and 11 patients (69%) normalized ALT levels. HBV RNA levels were low and only detectable in two to four patients. HBcrAg levels declined in 75% (12/16) of patients. Median HBcrAg levels declined significantly from BL to 6M (3.75 logU/ml (IQR 2.93-4.78) vs. 3.4 logU/ml (IQR 2-4.68), p=0.002). A similar trend was shown for anti-HBc between BL and 6M. Levels of HBcrAg or anti-HBc did not differ significantly between patients with or without ≥ 2 log HDV RNA decline from BL to 6M.After 6 months treatment with BLV, levels of HBcrAg showed a significant decline, while HBV RNA and anti-HBc levels did not change. Reduction of HBV cccDNA transcriptional activity and immunological effects of antiviral treatment might explain these changes.
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Affiliation(s)
- Lisa Sandmann
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,Excellence Cluster RESIST, Excellence Initiative Hannover Medical School, Hannover, Germany
| | - Katja Deterding
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Birgit Bremer
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Kerstin Port
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Markus Cornberg
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,Excellence Cluster RESIST, Excellence Initiative Hannover Medical School, Hannover, Germany.,German Center for Infection Research (DZIF), Hannover, Braunschweig, Germany.,Center for Individualised Infection Medicine, Helmholtz Center for Infection Research, Braunschweig, Germany
| | - Heiner Wedemeyer
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,Excellence Cluster RESIST, Excellence Initiative Hannover Medical School, Hannover, Germany.,German Center for Infection Research (DZIF), Hannover, Braunschweig, Germany
| | - Benjamin Maasoumy
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,German Center for Infection Research (DZIF), Hannover, Braunschweig, Germany
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Menezes RC, Ferreira IBB, Rosier GL, Villalva-Serra K, Campos VMS, Passos BBS, Argolo JVS, Santana GC, Garcia SL, Pustilnik HN, Silva RRC, Barreto-Duarte B, Araújo-Pereira M, Andrade BB. Grand challenges in major tropical diseases: Part II. FRONTIERS IN TROPICAL DISEASES 2023. [DOI: 10.3389/fitd.2023.1180606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
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45
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Mak LY, Hui RWH, Cheung KS, Fung J, Seto WK, Yuen MF. Advances in determining new treatments for hepatitis B infection by utilizing existing and novel biomarkers. Expert Opin Drug Discov 2023; 18:401-416. [PMID: 36943183 DOI: 10.1080/17460441.2023.2192920] [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: 03/23/2023]
Abstract
INTRODUCTION Chronic hepatitis B (CHB) infection is a major global health threat and accounts for significant liver-related morbidity and mortality. An improved understanding of how hepatitis B virus (HBV) interacts with the host immune system allows the discovery of novel biomarkers and new treatment options. Viral biomarkers including hepatitis B surface antigen (HBsAg) and newer ones like HBV RNA and hepatitis B core-related antigen appear to be useful to select patients who are likely to benefit from cessation of long-term antiviral therapy. These markers can also help to confirm target engagement for novel compounds, and efficacy in HBsAg reduction and seroclearance is deemed essential as this is how the current treatment endpoint of functional cure is defined. AREAS COVERED In this review, the authors discuss the current standard of care and the gaps between such standard and the ideal goals for treatment in CHB. The authors highlight novel viral and immunological biomarkers that are potentially useful to evaluate treatment response. Novel treatment approaches in relation to these novel biomarkers are also evaluated. EXPERT OPINION Novel serum viral biomarkers and immunological markers are indispensable in the HBV functional cure program. These will likely become part of standard monitoring soon.
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Affiliation(s)
- Lung-Yi Mak
- Department of Medicine, School of Clinical Medicine, Pokfulam, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Rex Wan-Hin Hui
- Department of Medicine, School of Clinical Medicine, Pokfulam, Hong Kong
| | - Ka-Shing Cheung
- Department of Medicine, School of Clinical Medicine, Pokfulam, Hong Kong
| | - James Fung
- Department of Medicine, School of Clinical Medicine, Pokfulam, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Wai-Kay Seto
- Department of Medicine, School of Clinical Medicine, Pokfulam, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Man-Fung Yuen
- Department of Medicine, School of Clinical Medicine, Pokfulam, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Pok Fu Lam, Hong Kong
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Soriano V, Moreno-Torres V, Treviño A, Corral O, de Mendoza C. Bulevirtide in the Treatment of Hepatitis Delta: Drug Discovery, Clinical Development and Place in Therapy. Drug Des Devel Ther 2023; 17:155-166. [PMID: 36712949 PMCID: PMC9875571 DOI: 10.2147/dddt.s379964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 01/14/2023] [Indexed: 01/22/2023] Open
Abstract
It has been ten years since the identification of NTCP as the cell surface receptor for HBV and HDV entry into hepatocytes. The search for molecules interfering with the binding of NTCP and HBV/HDV led to design bulevirtide (BLV). This large polypeptide mimics a region of the pre-S1 HBsAg and blocks viral entry by inhibitory competition. BLV was initially tested in cell cultures, animal models and more recently in Phase I-III human trials (called 'MYRS'). As monotherapy or in combination with peginterferon, BLV is well tolerated and exhibits potent antiviral activity. Plasma viremia significantly declines and/or becomes undetectable in more than 75% of patients treated for >24 weeks. However, serum HBsAg concentrations remain unchanged. No selection of BLV resistance in HBV/HDV has been reported in vivo to date. BLV is administered subcutaneously once daily at doses between 2 and 10 mg. BLV received conditional approval in Europe in 2020 to treat chronic hepatitis delta. The advent of peginterferon lambda or new specific anti-HDV antivirals (lonafarnib, etc.) will open the door for combination therapies with BLV. Since there is no stable reservoir for HDV-RNA within infected hepatocytes, viral clearance might be achieved using antivirals for a minimum timeframe. This is what happens in hepatitis C combining several antivirals, curing nearly all patients treated for 3 months. Clearance of HDV-RNA genomes may occur despite HBV persistence as cccDNA or chromosome integrated HBV-DNA within hepatocytes. This is supported by cases of HDV elimination using BLV despite persistence of serum HBsAg. Another path for HDV cure will derive from achieving HBsAg clearance, the goal of new promising anti-HBV gene therapies (bepirovirsen, etc.). In summary, the advent of BLV has triggered a renovated interest for antiviral therapy in hepatitis delta. We envision combination therapies that will lead to HDV cure in the near future.
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Affiliation(s)
- Vicente Soriano
- Health Sciences School & Medical Center, Universidad Internacional La Rioja (UNIR), Madrid, Spain,Correspondence: Vicente Soriano, UNIR Health Sciences School & Medical Center, Calle García Martín 21, Pozuelo de Alarcón 28224, Madrid, Spain, Tel +34 659687981, Email
| | - Victor Moreno-Torres
- Health Sciences School & Medical Center, Universidad Internacional La Rioja (UNIR), Madrid, Spain,Puerta de Hierro University Hospital & Research Institute, Madrid, Spain
| | - Ana Treviño
- Health Sciences School & Medical Center, Universidad Internacional La Rioja (UNIR), Madrid, Spain
| | - Octavio Corral
- Health Sciences School & Medical Center, Universidad Internacional La Rioja (UNIR), Madrid, Spain
| | - Carmen de Mendoza
- Puerta de Hierro University Hospital & Research Institute, Madrid, Spain
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Magvan B, Kloeble AA, Ptok J, Hoffmann D, Habermann D, Gantumur A, Paluschinski M, Enebish G, Balz V, Fischer JC, Chimeddorj B, Walker A, Timm J. Sequence diversity of hepatitis D virus in Mongolia. Front Med (Lausanne) 2023; 10:1108543. [PMID: 37035318 PMCID: PMC10077969 DOI: 10.3389/fmed.2023.1108543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 02/06/2023] [Indexed: 04/11/2023] Open
Abstract
Introduction The Hepatitis Delta Virus (HDV) is a defective, single-stranded RNA virusoid encoding for a single protein, the Hepatitis Delta Antigen (HDAg), which requires the hepatitis B virus (HBV) envelope protein (HBsAg) for its transmission. Currently, hepatitis D is the most aggressive form of viral hepatitis and treatment options are limited. Worldwide 12 million people are chronically infected with HDV being at high risk for progression to cirrhosis and development of liver cancer. Objectives Although it is well established that Mongolia is the country with the highest prevalence of HDV infections, the information on the molecular epidemiology and factors contributing to HDV sequence diversity are largely unclear. The aim of the study was to characterize the sequence diversity of HDV in rural areas from Mongolia and to determine the extent of HLA class I-associated selection pressure. Patients and methods From the HepMongolia cohort from rural areas in Mongolia, 451 HBsAg-positive individuals were selected and anti-HDV, HDV-RNA and the sequence of the large HDAg was determined. For all individuals the HLA class I locus was genotyped. Residues under selection pressure in the presence of individual HLA class I types were identified with the recently published analysis tool HAMdetector. Results Of 431 HBsAg positive patients, 281 were anti-HDV positive (65%), and HDV-RNA could be detected in 207 of 281 (74%) of patients. The complete large HDAg was successfully sequenced from 131 samples. Phylogenetic analysis revealed that all Mongolian HDV isolates belong to genotype 1, however, they separate into several different clusters without clear regional association. In turn, from phylogeny there is strong evidence for recent local transmission events. Importantly, we found multiple residues with strong support for HLA class I-associated selection pressure consistent with a functional CD8+ T cell response directed against HDV. Conclusion HDV isolates from Mongolia are highly diverse. The molecular epidemiology suggests circulation of multiple subtypes and provides evidence for ongoing recent transmissions.
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Affiliation(s)
- Battur Magvan
- Department of Microbiology and Infection Prevention and Control, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Anne Alina Kloeble
- Institute of Virology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Johannes Ptok
- Institute of Virology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Daniel Hoffmann
- Bioinformatics and Computational Biophysics, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Daniel Habermann
- Bioinformatics and Computational Biophysics, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Anuujin Gantumur
- Department of Microbiology and Infection Prevention and Control, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | | | - Gerelmaa Enebish
- Department of Microbiology and Infection Prevention and Control, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Vera Balz
- Institute for Transplant Diagnostics and Cell Therapeutics, University Hospital Dusseldorf, Dusseldorf, Germany
| | - Johannes C. Fischer
- Institute for Transplant Diagnostics and Cell Therapeutics, University Hospital Dusseldorf, Dusseldorf, Germany
| | - Battogtokh Chimeddorj
- Department of Microbiology and Infection Prevention and Control, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
- Institute of Biomedical Sciences, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Andreas Walker
- Institute of Virology, University Hospital Düsseldorf, Düsseldorf, Germany
- *Correspondence: Andreas Walker,
| | - Jörg Timm
- Institute of Virology, University Hospital Düsseldorf, Düsseldorf, Germany
- Jörg Timm,
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Zhu V, Burhenne J, Weiss J, Haag M, Hofmann U, Schwab M, Urban S, Mikus G, Czock D, Haefeli WE, Blank A. Evaluation of the drug-drug interaction potential of the novel hepatitis B and D virus entry inhibitor bulevirtide at OATP1B in healthy volunteers. Front Pharmacol 2023; 14:1128547. [PMID: 37089922 PMCID: PMC10117888 DOI: 10.3389/fphar.2023.1128547] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/20/2023] [Indexed: 04/25/2023] Open
Abstract
Introduction: Bulevirtide is a first-in-class antiviral drug to treat chronic hepatitis B/D. We investigated the drug-drug interaction potential and pharmacokinetics of high-dose subcutaneous bulevirtide (5 mg twice daily) with organic anion transporting polypeptide 1B1 (OATP1B1) and cytochrome P450 (CYP) 3A4. Methods: This was a single-center, open-label, fixed-sequence drug-drug interaction trial in 19 healthy volunteers. Before and at bulevirtide steady state, participants ingested a single 40 mg dose of pravastatin. A midazolam microdose was applied to quantify CYP3A4 activity. Results: At bulevirtide steady state, pravastatin area under the concentration-time curve (AUC0-∞) increased 1.32-fold (90% CI 1.08-1.61). The 5 mg bulevirtide twice-daily treatment resulted in a mean AUC0-12 of 1210 h*ng/ml (95% CI 1040-1408) and remained essentially unchanged under the influence of pravastatin. CYP3A4 activity did not change to a clinically relevant extent. As expected, total bile acids increased substantially (35-fold) compared to baseline during bulevirtide treatment. All study medication was well tolerated. Discussion: The study demonstrated that high-dose bulevirtide inhibited OATP1B-mediated hepatic uptake of the marker substrate pravastatin but the extent is considered clinically not relevant. Changes in CYP3A4 activity were also not clinically relevant. In conclusion, this study suggests that OATP1B substrate drugs as well as CYP3A4 substrates may safely be used without dose adjustment in patients treated with bulevirtide. However, in patients using high statin doses and where concomitant factors potentially further increase statin exposure, caution may be required when using bulevirtide.
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Affiliation(s)
- Vanessa Zhu
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
| | - Jürgen Burhenne
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
| | - Johanna Weiss
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
| | - Mathias Haag
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany
- University of Tübingen, Tübingen, Germany
| | - Ute Hofmann
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany
- University of Tübingen, Tübingen, Germany
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany
- Departments of Clinical Pharmacology and of Biochemistry and Pharmacy, University of Tübingen, Tübingen, Germany
- Cluster of Excellence iFIT (EXC2180), Image‐guided and Functionally Instructed Tumor Therapies, University of Tübingen, Tübingen, Germany
| | - Stephan Urban
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
- Department of Infectious Diseases, Molecular Virology, Heidelberg University Hospital, Heidelberg, Germany
| | - Gerd Mikus
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
| | - David Czock
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
| | - Walter E. Haefeli
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
| | - Antje Blank
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research (DZIF) Partner Site Heidelberg, Heidelberg University Hospital, Heidelberg, Germany
- *Correspondence: Antje Blank,
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Bulevirtide and tenofovir combination therapy for hepatitis D virus infection: longer treatment and more diverse trial populations are needed. THE LANCET. INFECTIOUS DISEASES 2023; 23:14-16. [PMID: 36113539 DOI: 10.1016/s1473-3099(22)00412-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 12/29/2022]
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50
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Ferenci P, Reiberger T, Jachs M. Treatment of Chronic Hepatitis D with Bulevirtide-A Fight against Two Foes-An Update. Cells 2022; 11:cells11223531. [PMID: 36428959 PMCID: PMC9688382 DOI: 10.3390/cells11223531] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/30/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
HDV infection frequently causes progression to cirrhosis and hepatocellular carcinoma (HCC). In summer 2020, the first potentially effective drug Bulevirtide (BLV) has been approved for the treatment of HDV by the EMA. BLV is a synthetic N-acylated pre-S1 lipopeptide that blocks the binding of HBsAg-enveloped particles to the sodium taurocholate co-transporting polypeptide (NTCP), which is the cell entry receptor for both HBV and HDV. In this review, we discuss the available data from the ongoing clinical trials and from "real world series". Clinical trials and real-world experiences demonstrated that BLV 2 mg administered for 24 or 48 weeks as monotherapy or combined with pegIFNα reduces HDV viremia and normalizes ALT levels in a large proportion of patients. The combination of BLV and pegIFNα shows a synergistic on-treatment effect compared with either one of the monotherapies.
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Affiliation(s)
- Peter Ferenci
- Correspondence: ; Tel.: +43-140-4004-7410; Fax: +43-140-4004-7350
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