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Liver immunology: How to reconcile tolerance with autoimmunity. Clin Res Hepatol Gastroenterol 2017; 41:6-16. [PMID: 27526967 DOI: 10.1016/j.clinre.2016.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 06/01/2016] [Indexed: 02/04/2023]
Abstract
There are several examples of liver tolerance: the relative ease by which liver allografts are accepted and the exploitation of the hepatic microenvironment by the malarial parasite and hepatotrophic viruses are notable examples. The vasculature of the liver supports a unique population of antigen presenting cells specialised to maintain immunological tolerance despite continuous exposure to gut-derived antigens. Liver sinusoidal endothelial cells and Kupffer cells appear to be key to the maintenance of immune tolerance, by promoting T cell anergy or deletion and the generation of regulatory cell subsets. Despite this, there are three liver diseases with likely autoimmune involvement: primary biliary cirrhosis, primary sclerosing cholangitis and autoimmune hepatitis. How can we reconcile this with the inherent tolerogenicity of the liver? Genetic studies have uncovered several associations with genes involved in the activation of the innate and adaptive immune systems. There is also evidence pointing to pathogenic and xenobiotic triggers of autoimmune liver disease. Coupled to this, impaired immunoregulatory mechanisms potentially play a permissive role, allowing the autoimmune response to proceed.
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Extrahepatic Autoimmune Diseases in Patients with Autoimmune Liver Diseases: A Phenomenon Neglected by Gastroenterologists. Gastroenterol Res Pract 2017; 2017:2376231. [PMID: 28191014 PMCID: PMC5278196 DOI: 10.1155/2017/2376231] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 11/03/2016] [Indexed: 12/13/2022] Open
Abstract
Autoimmune liver diseases (AILDs) often coexist with other extrahepatic autoimmune diseases (EHAIDs). The spectrum of EHAIDs in patients with AILDs is similar, whereas the incidence is different. Notably, autoimmune thyroid disease and Sjogren's syndrome are the most common EHAIDs. Associated extrahepatic diseases may predate the appearance of AILDs or coincide with their onset. More frequently, they may appear during the course and even occur years after the diagnosis of AILDs. Importantly, associated EHAIDs may influence the natural course and prognosis of AILDs. To date, a definite pathophysiological pathway which contributes to the coexistence of AILDs and EHAIDs is still lacking. The current view of autoimmunity clustering involves a common susceptibility genetic background which applies to related pathologies. Herein, we review the current published researches regarding EHAIDs in patients with AILDs, particularly in relation to their clinical impact and pathophysiology. In managing patients with AILDs, gastroenterologists should be aware of the possibly associated EHAIDs to ensure a prompt diagnosis and better outcome.
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Paziewska A, Habior A, Rogowska A, Zych W, Goryca K, Karczmarski J, Dabrowska M, Ambrozkiewicz F, Walewska-Zielecka B, Krawczyk M, Cichoz-Lach H, Milkiewicz P, Kowalik A, Mucha K, Raczynska J, Musialik J, Boryczka G, Wasilewicz M, Ciecko-Michalska I, Ferenc M, Janiak M, Kanikowska A, Stankiewicz R, Hartleb M, Mach T, Grzymislawski M, Raszeja-Wyszomirska J, Wunsch E, Bobinski T, Mikula M, Ostrowski J. A novel approach to genome-wide association analysis identifies genetic associations with primary biliary cholangitis and primary sclerosing cholangitis in Polish patients. BMC Med Genomics 2017; 10:2. [PMID: 28056976 PMCID: PMC5217265 DOI: 10.1186/s12920-016-0239-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 12/15/2016] [Indexed: 01/28/2023] Open
Abstract
Background Primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC) are forms of hepatic autoimmunity, and risk for both diseases has a strong genetic component. This study aimed to define the genetic architecture of PBC and PSC within the Polish population. Methods Subjects were 443 women with PBC, 120 patients with PSC, and 934 healthy controls recruited from Gastroenterology Departments in various Polish hospitals. Allelotyping employed a pooled-DNA sample-based genome-wide association study (GWAS) approach, using Illumina Human Omni2.5-Exome BeadChips and the following novel selection criteria for risk loci: blocks of at least 10 single nucleotide polymorphisms (SNPs) in strong linkage disequilibrium, where the distance between each adjacent SNP pair in the block was less than 30 kb, and each SNP was associated with disease at a significance level of P < 0.005. A selected index SNP from each block was validated using TaqMan SNP genotyping assays. Results Nineteen and twenty-one SNPs were verified as associated with PBC and PSC, respectively, by individual genotyping; 19 (10/9, PBC/PSC) SNPs reached a stringent (corrected) significance threshold and a further 21 (9/12, PBC/PSC) reached a nominal level of significance (P < 0.05 with odds ratio (OR) > 1.2 or < 0.83), providing suggestive evidence of association. The SNPs mapped to seven (1p31.3, 3q13, 6p21, 7q32.1, 11q23.3, 17q12, 19q13.33) and one (6p21) chromosome region previously associated with PBC and PSC, respectively. The SNP, rs35730843, mapping to the POLR2G gene promoter (P = 1.2 × 10-5, OR = 0.39) demonstrated the highest effect size, and was protective for PBC, whereas for PSC respective SNPs were: rs13191240 in the intron of ADGRB3 gene (P = 0.0095, OR = 0.2) and rs3822659 (P = 0.0051, OR = 0.236) along with rs9686714 (P = 0.00077, OR = 0.2), both located in the WWC1 gene. Conclusions Our cost-effective GWAS approach followed by individual genotyping confirmed several previously identified associations and discovered new susceptibility loci associated with PBC and/or PSC in Polish patients. However, further functional studies are warranted to understand the roles of these newly identified variants in the development of the two disorders. Electronic supplementary material The online version of this article (doi:10.1186/s12920-016-0239-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Agnieszka Paziewska
- Department of Gastroenterology, Hepatology and Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
| | - Andrzej Habior
- Department of Gastroenterology, Hepatology and Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
| | - Agnieszka Rogowska
- Department of Gastroenterology, Hepatology and Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
| | - Włodzimierz Zych
- Department of Gastroenterology, Hepatology and Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
| | - Krzysztof Goryca
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Jakub Karczmarski
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Michalina Dabrowska
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Filip Ambrozkiewicz
- Department of Gastroenterology, Hepatology and Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
| | - Bozena Walewska-Zielecka
- Department of Public Health, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Marek Krawczyk
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Warsaw, Poland
| | | | - Piotr Milkiewicz
- Department of General, Liver and Internal Medicine Unit, Transplant and Liver Surgery, Medical University of Warsaw, Warsaw, Poland.,Department of Clinical and Molecular Biochemistry, Pomeranian Medical University, Szczecin, Poland
| | | | - Krzysztof Mucha
- Department of Immunology, Transplantology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland.,Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Joanna Raczynska
- Department of Immunology, Transplantology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Joanna Musialik
- Department of Gastroenterology and Hepatology, Medical University of Silesia, Katowice, Poland
| | - Grzegorz Boryczka
- Department of Gastroenterology and Hepatology, Medical University of Silesia, Katowice, Poland
| | - Michal Wasilewicz
- Department of General, Liver and Internal Medicine Unit, Transplant and Liver Surgery, Medical University of Warsaw, Warsaw, Poland
| | - Irena Ciecko-Michalska
- Department of Gastroenterology and Infectious Diseases, Collegium Medicum Jagiellonian University, Krakow, Poland
| | - Malgorzata Ferenc
- Department of Gastroenterology, Provincial Hospital, Olsztyn, Poland
| | - Maria Janiak
- Department of Gastroenterology and Hepatology, Medical University of Gdansk, Gdansk, Poland
| | - Alina Kanikowska
- Department of Internal and Metabolic Diseases and Dietetics, Poznan University of Medical Sciences, Poznan, Poland
| | - Rafal Stankiewicz
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Warsaw, Poland
| | - Marek Hartleb
- Department of Gastroenterology and Hepatology, Medical University of Silesia, Katowice, Poland
| | - Tomasz Mach
- Department of Gastroenterology and Infectious Diseases, Collegium Medicum Jagiellonian University, Krakow, Poland
| | - Marian Grzymislawski
- Department of Internal and Metabolic Diseases and Dietetics, Poznan University of Medical Sciences, Poznan, Poland
| | - Joanna Raszeja-Wyszomirska
- Department of General, Liver and Internal Medicine Unit, Transplant and Liver Surgery, Medical University of Warsaw, Warsaw, Poland
| | - Ewa Wunsch
- Department of Clinical and Molecular Biochemistry, Pomeranian Medical University, Szczecin, Poland
| | - Tomasz Bobinski
- Department of Gastroenterology, Provincial Hospital, Ostroleka, Poland
| | - Michal Mikula
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Jerzy Ostrowski
- Department of Gastroenterology, Hepatology and Oncology, Medical Center for Postgraduate Education, Warsaw, Poland. .,Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland.
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Abstract
Autoimmune biliary diseases are poorly understood but important to recognize. Initially, autoimmune biliary diseases are asymptomatic but may lead to progressive cholestasis with associated ductopenia, portal hypertension, cirrhosis, and eventually liver failure. The three main forms of autoimmune biliary disease are primary biliary cirrhosis, primary sclerosing cholangitis, and IgG4-associated cholangitis. Although some overlap may occur between the three main autoimmune diseases of the bile ducts, each disease typically affects a distinct demographic group and requires a disease-specific diagnostic workup. For all the autoimmune biliary diseases, imaging provides a means to monitor disease progression, assess for complications, and screen for the development of hepatobiliary malignancies that are known to affect patients with these diseases. Imaging is also useful to suggest or corroborate the diagnosis of primary sclerosing cholangitis and IgG4-associated cholangitis. We review the current literature and emphasize radiological findings and considerations for these autoimmune diseases of the bile ducts.
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155
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Ali AH, Tabibian JH, Lindor KD. Update on pharmacotherapies for cholestatic liver disease. Hepatol Commun 2016; 1:7-17. [PMID: 29404429 PMCID: PMC5747033 DOI: 10.1002/hep4.1013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 10/30/2016] [Indexed: 12/20/2022] Open
Abstract
Cholestatic liver diseases are conditions with impaired bile formation and/or flow due to genetic, immunologic, environmental, or other causes. Unless successfully treated, this can lead to chronic liver injury and end‐stage liver disease. Primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC) embody the most prominent adult cholestatic liver diseases with regard to incidence, morbidity, and mortality. A considerable proportion of patients with PBC and PSC experience progressive liver disease and ultimately liver‐related death due to a paucity of effective pharmacotherapy; however, novel pharmacologic developments offer substantial promise in this regard. Here, we provide a brief review and update on current and emerging pharmacotherapies for PBC and PSC. (Hepatology Communications 2017;1:7–17)
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Affiliation(s)
- Ahmad H Ali
- Division of Gastroenterology and Hepatology Mayo Clinic Scottsdale AZ
| | - James H Tabibian
- Division of Gastroenterology and Hepatology University of California, Davis Medical Center Sacramento CA
| | - Keith D Lindor
- Division of Gastroenterology and Hepatology Mayo Clinic Scottsdale AZ.,College of Health Solutions Arizona State University Phoenix AZ
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156
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Huang YQ. Recent advances in the diagnosis and treatment of primary biliary cholangitis. World J Hepatol 2016; 8:1419-1441. [PMID: 27957241 PMCID: PMC5124714 DOI: 10.4254/wjh.v8.i33.1419] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 07/26/2016] [Accepted: 08/29/2016] [Indexed: 02/06/2023] Open
Abstract
Primary biliary cholangitis (PBC), formerly referred to as primary biliary cirrhosis, is an infrequent progressive intrahepatic cholestatic autoimmune illness that can evolve into hepatic fibrosis, hepatic cirrhosis, hepatic failure, and, in some cases, hepatocellular carcinoma. The disease itself is characterized by T-lymphocyte-mediated chronic non-suppurative destructive cholangitis and elevated serum levels of extremely specific anti-mitochondrial autoantibodies (AMAs). In this article, we will not only review epidemiology, risk factors, natural history, predictive scores, radiologic approaches (e.g., acoustic radiation force impulse imaging, vibration controlled transient elastography, and magnetic resonance elastography), clinical features, serological characteristics covering biochemical markers, immunoglobulins, infections markers, biomarkers, predictive fibrosis marker, specific antibodies (including AMAs such as AMA-M2), anti-nuclear autoantibodies [such as anti-multiple nuclear dot autoantibodies (anti-sp100, PML, NDP52, anti-sp140), anti-rim-like/membranous anti-nuclear autoantibodies (anti-gp210, anti-p62), anti-centromere autoantibodies, and some of the novel autoantibodies], histopathological characteristics of PBC, diagnostic advances, and anti-diastole of PBC. Furthermore, this review emphasizes the recent advances in research of PBC in terms of therapies, including ursodeoxycholic acid, budesonide, methotrexate, obeticholic acid, cyclosporine A, fibrates such as bezafibrate and fenofibrate, rituximab, mesenchymal stem cells transplant, and hepatic transplant. Currently, hepatic transplant remains the only optimal choice with acknowledged treatment efficiency for end-stage PBC patients.
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157
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MiR-139-5p is associated with inflammatory regulation through c-FOS suppression, and contributes to the progression of primary biliary cholangitis. J Transl Med 2016; 96:1165-1177. [PMID: 27668889 DOI: 10.1038/labinvest.2016.95] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 07/31/2016] [Accepted: 08/05/2016] [Indexed: 01/12/2023] Open
Abstract
Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease characterized pathologically by destruction of intrahepatic bile ducts. PBC is largely classified into three subtypes based on clinical course: (i) gradually progressive, (ii) portal hypertension, and (iii) hepatic failure. Previous studies have indicated that serum levels of the pro-inflammatory cytokine TNF-α, is elevated in PBC patients with fibrosis. Although the severity of cholangitis might also be related to the PBC subtype, its etiology has been unclear. Several studies have shown that microRNAs (miRNAs) demonstrate specific expression patterns in various diseases. In the present study, we evaluated miRNA expression patterns among the PBC subtypes using comprehensive deep sequencing. We also carried out histologic examination by laser capture microdissection and investigated how the identified miRNAs were involved in PBC clinical progression using the miRNA transfection method. On average, ~11 million 32-mer short RNA reads per sample were obtained, and we found that the expression levels of 97 miRNAs differed significantly among the four groups. Heat mapping demonstrated that the miRNA profiles from hepatic failure and portal hypertension type were clustered differently from those of the gradually progressive type and controls. Furthermore, we focused on miR-139-5p, which has an adequate number of total short reads. Quantitative reverse transcription PCR showed that miR-139-5p was significantly downregulated in clinically advanced PBC. Also, examination of liver tissues demonstrated that the expression of lymphocyte-derived miR-139-5p was significantly higher in hepatocytes. In vitro, the level of TNF-α was significantly elevated in supernatant of cells with upregulation of miR-139-5p. Furthermore, c-FOS gene transcription was repressed. Thus, we have demonstrated a novel inflammation-regulatory mechanism involving TNF-α and c-FOS transcription through miR-139-5p in the NF-κB signaling pathway. We conclude that the specific miRNA miR-139-5p might be involved in the pathogenesis of PBC, especially during clinical progression.
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Almasio PL, Licata A, Maida M, Macaluso FS, Costantino A, Alessi N, Grimaudo S, Accardi G, Caruso C, Craxi A. Clinical Course and Genetic Susceptibility of Primary Biliary Cirrhosis: Analysis of a Prospective Cohort. HEPATITIS MONTHLY 2016; 16:e31681. [PMID: 28070198 PMCID: PMC5203613 DOI: 10.5812/hepatmon.31681] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 11/28/2015] [Accepted: 12/19/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Natural history of primary biliary cirrhosis (PBC) is partially characterized in patients from the Mediterranean area whose genetic background differs from that of Northern Europeans. OBJECTIVES We aimed to describe genetic susceptibility and clinical course of PBC in patients from Southern Italy. METHODS Socio-demographic, clinical, biochemical and histological data at diagnosis as well as disease progression of 81 PBC consecutive patients were collected. All subjects were treated with Ursodeoxycholic acid at a dose of 15 mg/kg. HLA class II DRB1 alleles were compared with those of 237 healthy control subjects. IL28B genotyping for IL28B rs12979860 C/T and rs80899917 G/T was performed in a sub-group of patients. RESULTS HLA-DRB1*07 (RR 5.3, P = 0.0008) and HLA-DRB1*08 (RR n.c. P = 0.0005) were significantly associated with the risk of PBC development. Patients younger than 45 years had significantly higher alanine aminotransferase (P = 0.038) and alkaline phosphatase levels (P = 0.047) than older cases. In comparison to non-CC rs12979860, patients with CC rs12979860 genotype showed an early histological stage at onset (93.8% vs. 62.5%, P = 0.03). After a mean follow-up of 61 months, three patients died, one underwent liver transplantation and sixteen (21.9%) had progression of the disease. At multivariate analysis, extrahepatic autoimmune disease (P = 0.04), pruritus (P = 0.008) and advanced histological stage (P < 0.0001) were independent risk factors for disease progression. CONCLUSIONS HLA-DRB1*07 and HLA-DRB1*08 alleles increase susceptibility to disease development. At onset, higher biochemical activity was observed in younger patients, whereas rs12979860 CC genotype was associated with milder histological stage. Pruritus and coexistence of extrahepatic autoimmune diseases were significantly associated with poorer prognosis.
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Affiliation(s)
- Piero Luigi Almasio
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
- Corresponding Author: Piero Luigi Almasio, M.D., Section of Gastroenterology, Di.Bi.M.I.S., University of Palermo, Piazza delle Cliniche 2, 90127 Palermo, Italy. Tel: +39-916553131, Fax: +39-916552156, E-mail:
| | - Anna Licata
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
| | - Marcello Maida
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
| | - Fabio Salvatore Macaluso
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
| | - Andrea Costantino
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
| | - Nicola Alessi
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
| | - Stefania Grimaudo
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
| | - Giulia Accardi
- Dipartimento di Biopatologia e Biotecnologie Mediche, University of Palermo, Palermo, Italy
| | - Calogero Caruso
- Dipartimento di Biopatologia e Biotecnologie Mediche, University of Palermo, Palermo, Italy
| | - Antonio Craxi
- Sezione di Gastroenterologia ed Epatologia, Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Palermo, Italy
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Ali AH, Tabibian JH, Carey EJ, Lindor KD. Emerging drugs for the treatment of Primary Biliary Cholangitis. Expert Opin Emerg Drugs 2016; 21:39-56. [PMID: 26901615 DOI: 10.1517/14728214.2016.1150999] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Primary biliary cholangitis (PBC) is an autoimmune chronic disease of the liver that can progress to cirrhosis and hepatocellular carcinoma. It affects approximately 1 in 4,000 with a 10:1 female to male ratio. The diagnosis of PBC can be made based on serum antimitochondrial antibodies (AMA) in a patient with abnormally high serum alkaline phosphatase after ruling out other causes of cholestasis and biliary obstruction. Genome-wide association studies have revealed several human leukocyte antigen (HLA) and non-HLA risk loci in PBC, and complex environmental-host immunogenetic interactions are believed to underlie the etiopathogenesis of the disease. Fatigue and pruritus are the most common and often problematic symptoms; although often mild, these can be severe and life-alternating in a subset of patients. Ursodeoxycholic acid (UDCA) is the only drug approved by the United States Food and Drug Administration for the treatment of PBC. Clinical trials have shown that UDCA significantly improves transplant-free survival. However, nearly 40% of PBC patients do not respond adequately to PBC and are at higher risk for serious complications when compared to PBC patients with complete response to UDCA. AREAS COVERED Here we provide a detailed discussion regarding novel therapeutic agents and potential areas for further investigation in PBC-related research. EXPERT OPINION Results of ongoing clinical trials and emerging treatment paradigms for PBC will likely further improve medical management of this disorder in the near future.
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160
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Dual Roles of IFN-γ and IL-4 in the Natural History of Murine Autoimmune Cholangitis: IL-30 and Implications for Precision Medicine. Sci Rep 2016; 6:34884. [PMID: 27721424 PMCID: PMC5056512 DOI: 10.1038/srep34884] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 09/21/2016] [Indexed: 12/24/2022] Open
Abstract
Primary biliary cirrhosis (PBC) is a progressive autoimmune liver disease with a long natural history. The pathogenesis of PBC is thought to be orchestrated by Th1 and/or Th17. In this study, we investigated the role of CD4+ helper T subsets and their cytokines on PBC using our previous established murine model of 2-OA-OVA immunization. We prepared adeno-associated virus (AAV)-IFN-γ and AAV-IL-4 and studied their individual influences on the natural history of autoimmune cholangitis in this model. Administration of IFN-γ significantly promotes recruitment and lymphocyte activation in the earliest phases of autoimmune cholangitis but subsequently leads to downregulation of chronic inflammation through induction of the immunosuppressive molecule IL-30. In contrast, the administration of IL-4 does not alter the initiation of autoimmune cholangitis, but does contribute to the exacerbation of chronic liver inflammation and fibrosis. Thus Th1 cells and IFN-γ are the dominant contributors in the initiation phase of this model but clearly may have different effects as the disease progress. In conclusion, better understanding of the mechanisms by which helper T cells function in the natural history of cholangitis is essential and illustrates that precision medicine may be needed for patients with PBC at various stages of their disease process.
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161
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Liberal R, Grant CR. Cirrhosis and autoimmune liver disease: Current understanding. World J Hepatol 2016; 8:1157-1168. [PMID: 27729952 PMCID: PMC5055585 DOI: 10.4254/wjh.v8.i28.1157] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 05/14/2016] [Accepted: 08/08/2016] [Indexed: 02/06/2023] Open
Abstract
Primary biliary cirrhosis (PBC), primary sclerosing cholangitis (PSC) and autoimmune hepatitis (AIH) constitute the classic autoimmune liver diseases (AILDs). While AIH target the hepatocytes, in PBC and PSC the targets of the autoimmune attack are the biliary epithelial cells. Persistent liver injury, associated with chronic AILD, leads to un-resolving inflammation, cell proliferation and the deposition of extracellular matrix proteins by hepatic stellate cells and portal myofibroblasts. Liver cirrhosis, and the resultant loss of normal liver function, inevitably ensues. Patients with cirrhosis have higher risks or morbidity and mortality, and that in the decompensated phase, complications of portal hypertension and/or liver dysfunction lead to rapid deterioration. Accurate diagnosis and monitoring of cirrhosis is, therefore of upmost importance. Liver biopsy is currently the gold standard technique, but highly promising non-invasive methodology is under development. Liver transplantation (LT) is an effective therapeutic option for the management of end-stage liver disease secondary to AIH, PBC and PSC. LT is indicated for AILD patients who have progressed to end-stage chronic liver disease or developed intractable symptoms or hepatic malignancy; in addition, LT may also be indicated for patients presenting with acute liver disease due to AIH who do not respond to steroids.
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162
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Chanthra N, Payungporn S, Chuaypen N, Piratanantatavorn K, Pinjaroen N, Poovorawan Y, Tangkijvanich P. Single Nucleotide Polymorphisms in STAT3 and STAT4 and Risk of Hepatocellular Carcinoma in Thai Patients with Chronic Hepatitis B. Asian Pac J Cancer Prev 2016; 16:8405-10. [PMID: 26745093 DOI: 10.7314/apjcp.2015.16.18.8405] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Hepatitis B virus (HBV) infection is the leading cause of hepatocellular carcinoma (HCC) development. Recent studies demonstrated that single nucleotide polymorphisms (SNPs) rs2293152 in signal transducer and activator of transcription 3 (STAT3) and rs7574865 in signal transducer and activator of transcription 4 (STAT4) are associated with chronic hepatitis B (CHB)-related HCC in the Chinese population. We hypothesized that these polymorphisms might be related to HCC susceptibility in Thai population as well. Study subjects were divided into 3 groups consisting of CHB-related HCC (n=192), CHB without HCC (n=200) and healthy controls (n=190). The studied SNPs were genotyped using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The results showed that the distribution of different genotypes for both polymorphisms were in Hardy-Weinberg equilibrium (P>0.05). Our data demonstrated positive association of rs7574865 with HCC risk when compared to healthy controls under an additive model (GG versus TT: odds ratio (OR) =2.07, 95% confidence interval (CI)=1.06-4.03, P=0.033). This correlation remained significant under allelic and recessive models (OR=1.46, 95% CI=1.09-1.96, P=0.012 and OR=1.71, 95% CI=1.13-2.59, P=0.011, respectively). However, no significant association between rs2293152 and HCC development was observed. These data suggest that SNP rs7574865 in STAT4 might contribute to progression to HCC in the Thai population.
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Affiliation(s)
- Nawin Chanthra
- Research Unit of Hepatitis and Liver Cancer, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand E-mail :
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Bae HR, Leung PS, Tsuneyama K, Valencia JC, Hodge DL, Kim S, Back T, Karwan M, Merchant AS, Baba N, Feng D, Park O, Gao B, Yang GX, Gershwin ME, Young HA. Chronic expression of interferon-gamma leads to murine autoimmune cholangitis with a female predominance. Hepatology 2016; 64:1189-201. [PMID: 27178326 PMCID: PMC5033675 DOI: 10.1002/hep.28641] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/25/2016] [Accepted: 04/28/2016] [Indexed: 12/21/2022]
Abstract
UNLABELLED In most autoimmune diseases the serologic hallmarks of disease precede clinical pathology by years. Therefore, the use of animal models in defining early disease events becomes critical. We took advantage of a "designer" mouse with dysregulation of interferon gamma (IFNγ) characterized by prolonged and chronic expression of IFNγ through deletion of the IFNγ 3'-untranslated region adenylate uridylate-rich element (ARE). The ARE-Del(-/-) mice develop primary biliary cholangitis (PBC) with a female predominance that mimics human PBC that is characterized by up-regulation of total bile acids, spontaneous production of anti-mitochondrial antibodies, and portal duct inflammation. Transfer of CD4 T cells from ARE-Del(-/-) to B6/Rag1(-/-) mice induced moderate portal inflammation and parenchymal inflammation, and RNA sequencing of liver gene expression revealed that up-regulated genes potentially define early stages of cholangitis. Interestingly, up-regulated genes specifically overlap with the gene expression signature of biliary epithelial cells in PBC, implying that IFNγ may play a pathogenic role in biliary epithelial cells in the initiation stage of PBC. Moreover, differentially expressed genes in female mice have stronger type 1 and type 2 IFN signaling and lymphocyte-mediated immune responses and thus may drive the female bias of the disease. CONCLUSION Changes in IFNγ expression are critical for the pathogenesis of PBC. (Hepatology 2016;64:1189-1201).
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Affiliation(s)
- Heekyong R. Bae
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, and SAIC Frederick, Frederick, MD
| | - Patrick S.C. Leung
- Division of Rheumatology, Allergy and Clinical Immunology, University of California Davis School of Medicine, Davis, California
| | - Koichi Tsuneyama
- Department of Pathology and Laboratory Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Japan
| | - Julio C. Valencia
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, and SAIC Frederick, Frederick, MD
| | - Deborah L. Hodge
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, and SAIC Frederick, Frederick, MD
| | - Seohyun Kim
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, and SAIC Frederick, Frederick, MD
| | - Tim Back
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, and SAIC Frederick, Frederick, MD
| | - Megan Karwan
- Laboratory of Animal Science, National Cancer Institute-Frederick, Frederick, Maryland
| | - Anand S. Merchant
- CCR Collaborative Bioinformatics Core, National Cancer Institute, Bethesda, Maryland
| | - Nobuyuki Baba
- Central Laboratory Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - Dechun Feng
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland
| | - Ogyi Park
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland
| | - Guo-Xiang Yang
- Division of Rheumatology, Allergy and Clinical Immunology, University of California Davis School of Medicine, Davis, California
| | - M. Eric Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California Davis School of Medicine, Davis, California
| | - Howard A. Young
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, and SAIC Frederick, Frederick, MD
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Abstract
There is significant unmet need in Primary Biliary Cholangitis (PBC) in patients under-responsive to the only approved therapy Ursodeoxycholic Acid (UDCA) who are at increased risk of progressing to end-stage liver disease. Obeticholic Acid (OCA) is a farnesoid X receptor (FXR) agonist which has been evaluated as a second line therapy in PBC and has recently been licenced by the FDA. Areas covered: The pharmacology and biology of OCA as an FXR agonist and its clinical benefits. A systematic review was undertaken of published literature, meeting abstracts and trial registries using the search terms FXR, FGF-19 (& FGF-15), Obeticholic Acid and INT-747. Expert commentary: OCA reduces exposure to toxic hydrophobic bile acids through reduction in bile acid synthesis (by direct and indirect (via enterocyte-released FGF19) actions on Cyp7A1-mediated bile acid synthesis) and bile acid excretion by hepatocytes. It significantly improves liver biochemical parameters strongly associated with risk of disease progression in UDCA under-responsive patients and the key side-effect of pruritus can be reduced by optimised dosing. OCA will be the first stratified therapy introduced in PBC, however confirmatory trial and real life data are needed to confirm that suggestive biochemical improvements are matched by improvement in key clinical outcomes.
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Affiliation(s)
- David E J Jones
- a Institute of Cellular Medicine , Newcastle University , Newcastle upon Tyne , UK
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165
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Li GD, Wang D, Zhang DF, Xiang Q, Feng JQ, Li XA, Li YY, Yao YG. Fine mapping of the GWAS loci identifies SLC35D1 and IL23R as potential risk genes for leprosy. J Dermatol Sci 2016; 84:322-329. [PMID: 27712858 DOI: 10.1016/j.jdermsci.2016.09.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/23/2016] [Accepted: 09/28/2016] [Indexed: 01/16/2023]
Abstract
BACKGROUND Previous genome-wide association study (GWAS) identified two new leprosy associated loci (1p31.3 [rs3762318] and 6q24.3 [rs2275606]). However, there were insufficient validations in independent populations. OBJECTIVE To validate the association and to map the potentially causal variants/genes underlying the association between the confirmed GWAS hit and leprosy. METHODS We genotyped 10 variants in the regions encompassing the two loci in 1110 Han Chinese subjects with and without leprosy, followed by expression quantitative trait loci (eQTL), mRNA expression profiling, and network analysis. We further sequenced the exon region of four genes that were located in the confirmed GWAS hit region in 80 leprosy patients and 99 individuals without leprosy. RESULTS We validated the positive association of rs3762318 with multibacillary leprosy (P=7.5×10-4), whereas the association of rs2275606 could not be validated. eQTL analysis showed that both the GWAS locus rs3762318 and one surrounding positively associated SNP rs2144658 (P=1.8×10-3) significantly affected the mRNA expression of a nearby gene SLC35D1, which might be involved in metabolism. Moreover, SLC35D1 was differentially expressed in skin tissues of leprosy patients, and the differential expression pattern was consistent among leprosy subtypes. Rare damaging missense variants in IL23R were significantly enriched in leprosy patients. CONCLUSION Our results supported the positive association between the GWAS reported rs3762318 and leprosy, and SLC35D1 and IL23R might be the causal genes.
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Affiliation(s)
- Guo-Dong Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China
| | - Dong Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China
| | - Deng-Feng Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China
| | - Qun Xiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China
| | - Jia-Qi Feng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China; Department of Dermatology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Xiao-An Li
- Yuxi City Center for Disease Control and Prevention, Yuxi, Yunnan 653100, China
| | - Yu-Ye Li
- Department of Dermatology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China.
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166
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Qin X, Xu J, Wu Z, Sun F, Chen H, Zheng W, Li S, Li P, Chen S, Shen M, Zhang W, You X, Wu Q, Zhang F, Li YZ. Association study of rs924080 and rs11209032 polymorphisms of IL23R-IL12RB2 in a Northern Chinese Han population with Behcet's disease. Hum Immunol 2016; 77:1284-1290. [PMID: 27660093 DOI: 10.1016/j.humimm.2016.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 09/18/2016] [Accepted: 09/18/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Two genome-wide association studies (GWAS) have identified the IL-23 receptor- IL-12 receptor β2 (IL23R-IL12RB2) as the susceptibility genetic region in Turkish and Japanese population with Behçet's disease (BD). We investigated the association of this region with BD in a Northern Chinese Han population. METHODS A total of 407 patients with BD and 421 healthy controls were genotyped for single nucleotide polymorphisms (SNPs) rs924080 and rs11209032 using the Sequenom MassArray system. RESULTS Statistically significant associations with BD were detected at two SNPs namely, rs924080 and rs11209032, both, by allele analysis (OR=1.58, 95% CI=1.25-2.00, Pc=2.52×10-4, and OR=1.45, 95% CI=1.19-1.76, Pc=3.46×10-4, respectively), and genotype analysis (Pc=1.22×10-3andPc=1.77×10-3, respectively). Significant differences were observed in the genotype frequency distribution for these SNPs under the additive, dominant and recessive models (all Pc<0.05). The haplotypes (AT and GC) formed by the two SNPs were associated with BD (all permutation P<0.05). A meta-analysis also appeared to support the association of the two SNPs with BD. CONCLUSION SNPs (rs924080 and rs11209032) of the IL23R-IL12RB2 region were found to be associated with BD in a Northern Chinese Han population.
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Affiliation(s)
- Xue Qin
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Juanjuan Xu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China; Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Ziyan Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Fei Sun
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Hua Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Wenjie Zheng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Shan Li
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Ping Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Si Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Ming Shen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Wen Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xin You
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Qingjun Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Fengchun Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
| | - Yong Zhe Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.
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167
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Bowlus CL. Obeticholic acid for the treatment of primary biliary cholangitis in adult patients: clinical utility and patient selection. Hepat Med 2016; 8:89-95. [PMID: 27621676 PMCID: PMC5012622 DOI: 10.2147/hmer.s91709] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Primary biliary cholangitis (PBC), previously known as primary biliary “cirrhosis”, is a rare autoimmune liver disease characterized by the hallmark autoantibodies to mitochondrial antigens and immune-mediated destruction of small bile duct epithelial cells leading to cholestasis and cirrhosis. Surprisingly, while immune modulators have not been effective in the treatment of PBC, supplementation with the hydrophilic bile acid (BA) ursodeoxycholic acid (UDCA) has been demonstrated to slow the disease progression. However, a significant minority of PBC patients do not have a complete response to UDCA and remain at risk of continued disease progression. Although the mechanisms of action are not well understood, UDCA provided proof of concept for BA therapy in PBC. Obeticholic acid (OCA), a novel derivative of the human BA chenodeoxycholic acid, is a potent agonist of the nuclear hormone receptor farnesoid X receptor, which regulates BA synthesis and transport. A series of clinical trials of OCA in PBC, primarily in combination with UDCA, have established that OCA leads to significant reductions in serum alkaline phosphatase that are predicted to lead to improved clinical outcomes, while dose-dependent pruritus has been the most common adverse effect. On the basis of these studies, OCA was given conditional approval by the US Food and Drug Administration with plans to establish the long-term clinical efficacy of OCA in patients with advanced PBC.
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Affiliation(s)
- Christopher L Bowlus
- Division of Gastroenterology and Hepatology, University of California Davis, Davis, CA, USA
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168
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Choi J, Leung PSC, Bowlus C, Gershwin ME. IL-35 and Autoimmunity: a Comprehensive Perspective. Clin Rev Allergy Immunol 2016; 49:327-32. [PMID: 25619872 DOI: 10.1007/s12016-015-8468-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Interleukin 35 (IL-35) is the most recently identified member of the IL-12 family of cytokines and offers the potential to be a target for new therapies for autoimmune, inflammatory, and infectious diseases. Similar to other members of the IL-12 family including IL-12, IL-23, and IL-27, IL-35 is composed of a heterodimer of α and β chains, which in the case of IL-35 are the p35 and Epstein-Barr virus-induced gene 3 (EBI3) proteins. However, unlike its proinflammatory relatives, IL-35 has immunosuppressive effects that are mediated through regulatory T and B cells. Although there are limited data available regarding the role of IL-35 in human autoimmunity, several murine models of autoimmunity suggest that IL-35 may have potent effects in regulating immunoreactivity via IL-10-dependent mechanisms. We suggest that similar effects are operational in human disease and IL-35-directed therapies hold significant promise. In particular, we emphasize that IL-35 has immunosuppressive ability that are mediated via regulatory T and B cells that are IL-10 dependent. Further, although deletion of IL-35 does not result in spontaneous breach of tolerance, recombinant IL-35 can improve autoimmune responses in several experimental models.
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Affiliation(s)
- Jinjung Choi
- Division of Rheumatology, Allergy and Clinical Immunology, University of California Davis, Davis, CA, 95616, USA.,Division of Rheumatology, CHA University Medical Center, Bundang, 463-712, Korea
| | - Patrick S C Leung
- Division of Rheumatology, Allergy and Clinical Immunology, University of California Davis, Davis, CA, 95616, USA
| | - Christopher Bowlus
- Division of Gastroenterology and Hepatology, University of California Davis, Sacramento, CA, 95817, USA
| | - M Eric Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California Davis, Davis, CA, 95616, USA.
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169
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Nevens F, Andreone P, Mazzella G, Strasser SI, Bowlus C, Invernizzi P, Drenth JPH, Pockros PJ, Regula J, Beuers U, Trauner M, Jones DE, Floreani A, Hohenester S, Luketic V, Shiffman M, van Erpecum KJ, Vargas V, Vincent C, Hirschfield GM, Shah H, Hansen B, Lindor KD, Marschall HU, Kowdley KV, Hooshmand-Rad R, Marmon T, Sheeron S, Pencek R, MacConell L, Pruzanski M, Shapiro D. A Placebo-Controlled Trial of Obeticholic Acid in Primary Biliary Cholangitis. N Engl J Med 2016; 375:631-43. [PMID: 27532829 DOI: 10.1056/nejmoa1509840] [Citation(s) in RCA: 695] [Impact Index Per Article: 86.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Primary biliary cholangitis (formerly called primary biliary cirrhosis) can progress to cirrhosis and death despite ursodiol therapy. Alkaline phosphatase and bilirubin levels correlate with the risk of liver transplantation or death. Obeticholic acid, a farnesoid X receptor agonist, has shown potential benefit in patients with this disease. METHODS In this 12-month, double-blind, placebo-controlled, phase 3 trial, we randomly assigned 217 patients who had an inadequate response to ursodiol or who found the side effects of ursodiol unacceptable to receive obeticholic acid at a dose of 10 mg (the 10-mg group), obeticholic acid at a dose of 5 mg with adjustment to 10 mg if applicable (the 5-10-mg group), or placebo. The primary end point was an alkaline phosphatase level of less than 1.67 times the upper limit of the normal range, with a reduction of at least 15% from baseline, and a normal total bilirubin level. RESULTS Of 216 patients who underwent randomization and received at least one dose of obeticholic acid or placebo, 93% received ursodiol as background therapy. The primary end point occurred in more patients in the 5-10-mg group (46%) and the 10-mg group (47%) than in the placebo group (10%; P<0.001 for both comparisons). Patients in the 5-10-mg group and those in the 10-mg group had greater decreases than those in the placebo group in the alkaline phosphatase level (least-squares mean, -113 and -130 U per liter, respectively, vs. -14 U per liter; P<0.001 for both comparisons) and total bilirubin level (-0.02 and -0.05 mg per deciliter [-0.3 and -0.9 μmol per liter], respectively, vs. 0.12 mg per deciliter [2.0 μmol per liter]; P<0.001 for both comparisons). Changes in noninvasive measures of liver fibrosis did not differ significantly between either treatment group and the placebo group at 12 months. Pruritus was more common with obeticholic acid than with placebo (56% of patients in the 5-10-mg group and 68% of those in the 10-mg group vs. 38% in the placebo group). The rate of serious adverse events was 16% in the 5-10-mg group, 11% in the 10-mg group, and 4% in the placebo group. CONCLUSIONS Obeticholic acid administered with ursodiol or as monotherapy for 12 months in patients with primary biliary cholangitis resulted in decreases from baseline in alkaline phosphatase and total bilirubin levels that differed significantly from the changes observed with placebo. There were more serious adverse events with obeticholic acid. (Funded by Intercept Pharmaceuticals; POISE ClinicalTrials.gov number, NCT01473524; Current Controlled Trials number, ISRCTN89514817.).
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Affiliation(s)
- Frederik Nevens
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Pietro Andreone
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Giuseppe Mazzella
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Simone I Strasser
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Christopher Bowlus
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Pietro Invernizzi
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Joost P H Drenth
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Paul J Pockros
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Jaroslaw Regula
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Ulrich Beuers
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Michael Trauner
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - David E Jones
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Annarosa Floreani
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Simon Hohenester
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Velimir Luketic
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Mitchell Shiffman
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Karel J van Erpecum
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Victor Vargas
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Catherine Vincent
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Gideon M Hirschfield
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Hemant Shah
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Bettina Hansen
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Keith D Lindor
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Hanns-Ulrich Marschall
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Kris V Kowdley
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Roya Hooshmand-Rad
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Tonya Marmon
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Shawn Sheeron
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Richard Pencek
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Leigh MacConell
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - Mark Pruzanski
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
| | - David Shapiro
- From University Hospitals KU Leuven, Leuven, Belgium (F.N.); University of Bologna, Bologna (P.A., G.M.), Program for Autoimmune Liver Disease, International Center for Digestive Health, Department of Medicine and Surgery, University of Milan-Bicocca, Milan (P.I.), Humanitas Clinical and Research Center, Rozzano (P.I.), and University of Padua, Padua (A.F.) - all in Italy; Royal Prince Alfred Hospital, Camperdown, NSW, Australia (S.I.S.); University of California Davis Medical Center, Sacramento (C.B.), Scripps Clinic, La Jolla (P.J.P.), and Intercept Pharmaceuticals, San Diego (R.H.-R., T.M., S.S., R.P., L.M., M.P., D.S.) - all in California; Radboud University Nijmegen Medical Center, Nijmegen (J.P.H.D.), University of Amsterdam, Amsterdam (U.B.), University Medical Center Utrecht, Utrecht (K.J.E.), and University Medical Center Rotterdam, Rotterdam (B.H.) - all in the Netherlands; Maria Sklodowska-Curie Memorial Cancer Center, Warsaw, Poland (J.R.); Medical University of Vienna, Vienna (M.T.); Newcastle University Medical School, Newcastle upon Tyne (D.E.J.), and the Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham (G.M.H.) - both in the United Kingdom; Liver Center Munich, Department of Medicine II, University of Munich, Munich, Germany (S.H.); Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond (V.L.), and the Liver Institute of Virginia, Newport News (M.S.) - all in Virginia; the Liver Unit, Hospital Vall d'Hebron, Universitat Autonoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas del Instituto de Salud Carlos III, Barcelona (V.V.); Centre Hospitalier de l'Université de Montréal-St. Luc, Montreal (C.V.); University Health Network Toronto Western Hospital, Toronto (H.S.); Arizona State University, Tempe (K.D.L.); Sahlgrenska Academy, University of Gothenburg
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Ali AH, Lindor KD. Obeticholic acid for the treatment of primary biliary cholangitis. Expert Opin Pharmacother 2016; 17:1809-15. [PMID: 27468093 DOI: 10.1080/14656566.2016.1218471] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Primary biliary cholangitis (PBC) is an autoimmune disease of the liver characterized by destruction and inflammation of the intrahepatic bile ducts. The disease affects mainly women. The disease is often discovered through abnormal alkaline phosphatase (ALP) activity, and is confirmed when anti-mitochondrial antibodies (AMA) are present. The etiology of PBC is poorly understood. Cigarette smoking, immune dysregulation, nail polish, urinary tract infections, and low socioeconomic status have been implicated but none have been confirmed. Genome wide association studies (GWAS) have disclosed strong associations between certain human leukocyte antigen (HLA) alleles and PBC. PBC can progress to cirrhosis and end-stage liver disease. Hepatocellular carcinoma (HCC) develops in up to 3.5% of PBC patients. Ursodeoxycholic acid (UDCA) is the only medication approved for the treatment of PBC. The use of UDCA in PBC delays histological progression and extends the transplant-free survival. 40% of PBC patients do not respond adequately to UDCA, and these patients are at high risk for serious complications. Therefore, there is a critical need for more effective therapies for this problematic disease. Multiple other agents have either been or are currently being studied as therapeutic options in UDCA non-responder PBC patients. Six-ethyl chenodeoxycholic acid (6-ECDCA), a potent farnesoid X receptor (FXR) agonist, has shown anti-cholestatic activity in rodent models of cholestasis. Obeticholic acid (OCA, 6-ECDCA, or INT-747), a first-in-class FXR agonist, has been examined in PBC patients with inadequate response to UDCA, and shown promising results. Particularly, initial clinical trials have demonstrated that the use of OCA (in addition to UDCA) in PBC patients with inadequate response to UDCA led to significant reduction of serum alkaline phosphatase (ALP, an important prognostic marker in PBC). More recently, the results of a randomized clinical trial of OCA monotherapy in PBC reported significant reduction of ALP in the treatment group compared to placebo. AREAS COVERED This review covers the preclinical and clinical studies of OCA in PBC. In addition, other alternative therapies that are currently being examined in PBC patients will also be discussed in this review. A literature search was carried out using the PubMed database. EXPERT OPINION If approved by the U.S. FDA, OCA will likely be an important alternative add-on therapy in PBC patients who have inadequate response to UDCA.
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Affiliation(s)
- Ahmad H Ali
- a Division of Gastroenterology and Hepatology , Mayo Clinic , Phoenix , AZ , USA
| | - Keith D Lindor
- a Division of Gastroenterology and Hepatology , Mayo Clinic , Phoenix , AZ , USA.,b College of Health Solutions , Arizona State University , Phoenix , AZ , USA
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Hirschfield GM, Gershwin ME, Strauss R, Mayo MJ, Levy C, Zou B, Johanns J, Nnane IP, Dasgupta B, Li K, Selmi C, Marschall HU, Jones D, Lindor K. Ustekinumab for patients with primary biliary cholangitis who have an inadequate response to ursodeoxycholic acid: A proof-of-concept study. Hepatology 2016; 64:189-99. [PMID: 26597786 DOI: 10.1002/hep.28359] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 11/18/2015] [Indexed: 12/21/2022]
Abstract
UNLABELLED The interleukin (IL)-12 signaling cascade has been associated with primary biliary cholangitis (PBC). This multicenter, open-label, proof-of-concept study evaluated the anti-IL12/23 monoclonal antibody, ustekinumab (90 mg subcutaneous at weeks 0 and 4, then every 8 weeks through week 20), in adults with PBC and an inadequate response to ursodeoxycholic acid therapy (i.e., alkaline phosphatase [ALP] >1.67× upper limit of normal [ULN] after ≥6 months). ALP response was defined as a >40% decrease from baseline and ALP remission as ALP normalization (if baseline ALP 1.67×-2.8× ULN) or <1.67× ULN (if baseline ALP >2.8× ULN). Changes in Enhanced Liver Fibrosis (ELF) scores and serum bile acids were also assessed. At baseline, patients had median disease duration of 3.2 years, median ELF score of 9.8, and highly elevated total bile acid concentration (median, 43.3 μmol/L); 13 of 20 (65%) patients had baseline ALP >3× ULN. Although steady-state serum ustekinumab concentrations were reached by week 12, no patient achieved ALP response or remission. Median percent ALP reduction from baseline to week 28 was 12.1%. ELF score decreased slightly from baseline to week 28 (median reduction: 0.173), and total serum bile acid concentrations decreased from baseline to week 28 (median reduction: 8.8 μmol/L). No serious infections or discontinuations resulting from adverse events were reported through week 28. One patient had a serious upper gastrointestinal hemorrhage considered unrelated to test agent by the investigator. CONCLUSION Open-label ustekinumab therapy, though associated with a modest decrease in ALP after 28 weeks of therapy, did not otherwise appreciably change ALP and overt proof-of-concept was not established as per prespecified primary endpoint of proposed efficacy. No new ustekinumab safety signals were observed. (Hepatology 2016;64:189-199).
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Affiliation(s)
- Gideon M Hirschfield
- National Institute of Health Research (NIHR) Biomedical Research Unit (BRU) and Center for Liver Research, University of Birmingham, Birmingham, United Kingdom
| | - M Eric Gershwin
- Division of Rheumatology, Allergy & Immunology, The University of California School of Medicine, Davis, CA
| | | | | | | | - Bin Zou
- Janssen Research & Development, LLC, Spring House, PA
| | - Jewel Johanns
- Janssen Research & Development, LLC, Spring House, PA
| | - Ivo P Nnane
- Janssen Research & Development, LLC, Spring House, PA
| | | | - Katherine Li
- Janssen Research & Development, LLC, Spring House, PA
| | - Carlo Selmi
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center, Milan, Italy.,BIOMETRA Department, University of Milan, Milan, Italy
| | - Hanns-Ulrich Marschall
- Sahlgrenska Academy, Institute of Medicine, Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - David Jones
- Institute of Cellular Medicine, University of Newcastle, Newcastle Upon Tyne, United Kingdom
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Žavbi M, Korošec P, Fležar M, Škrgat Kristan S, Marc Malovrh M, Rijavec M. Polymorphisms and haplotypes of the chromosome locus 17q12-17q21.1 contribute to adult asthma susceptibility in Slovenian patients. Hum Immunol 2016; 77:527-34. [PMID: 27163155 DOI: 10.1016/j.humimm.2016.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 02/18/2016] [Accepted: 05/04/2016] [Indexed: 11/24/2022]
Abstract
One of the major asthma susceptibility loci is 17q12-17q21.1, but the relationship between this locus and adult asthma is unclear. Association analysis of 13 single nucleotide polymorphisms (SNPs) and haplotypes from 17q12-17q21.1 was performed in 418 adult patients with asthma and 288 controls from Slovenia. Single SNP analysis revealed only marginal associations with adult asthma for SNPs located in GSDMA, GSDMB, ORMDL3 and ZPBP2 genes, and rs7219080 was the most highly associated. Analyses of asthma phenotypes found no association with atopy or lung function, but rs2305480 and rs8066582 were associated with childhood asthma and rs9916279 was associated with asthma in smokers. Notably, haplotypes consisting of rs9916279, rs8066582, rs1042658, and rs2302777 harbouring PSMD3, CSF3 and MED24 genes were highly associated with asthma. The four most common haplotypes, TCCG, TTTA, CCCA and TTCA, were more frequent in patients with asthma, whereas TTCG, TCCA, TCTA and TTTG were more frequent in controls. Only 3% of asthma patients belonged to haplotypes TTCG, TCCA, TCTA and TTTG compared with nearly one-third (31%) of controls. Associations confirmed that the 17q12-17q21.1 locus harbours a genetic determinant for asthma risk in adults and suggest that in addition to the previously known ORMDL3-GSDM locus, CSF3-PSMD3-MED24 also plays a role in asthma pathogenesis.
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Affiliation(s)
- Mateja Žavbi
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Peter Korošec
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Matjaž Fležar
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Sabina Škrgat Kristan
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Mateja Marc Malovrh
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Matija Rijavec
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia.
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Li P, Lu G, Cui Y, Wu Z, Chen S, Li J, Wen X, Zhang H, Mu S, Zhang F, Li Y. Association of IL12A Expression Quantitative Trait Loci (eQTL) With Primary Biliary Cirrhosis in a Chinese Han Population. Medicine (Baltimore) 2016; 95:e3665. [PMID: 27175695 PMCID: PMC4902537 DOI: 10.1097/md.0000000000003665] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Genome-wide association studies in European individuals have revealed that IL12A is strongly associated with primary biliary cirrhosis (PBC). However, this association was not detected in replicative studies conducted in Chinese Han and Japanese populations.To verify contributions of genetic variants of IL12A to the pathogenesis of PBC in Chinese populations, a replicative study of 22 single nucleotide polymorphisms (SNPs) around the IL12A gene locus was performed in a cohort of 586 PBC cases and 726 healthy controls. Three out of the 22 SNPs were significantly associated with PBC. The 2 SNPs with the most significant association signal were rs4679868 (P = 6.59E-05, odds ratio [OR] = 1.554 [1.253-1.927]) and rs6441286 (P = 8.00E-05, OR = 1.551 [1.250-1.924]). These 2 SNPs were strongly linked to each other (r = 0.981), and both were found to be significantly associated with PBC in European populations.An expression quantitative trait loci (eQTL) analysis was performed based on the observation that these 2 SNPs were located in proximity to 2 enhancers verified by luciferase reporter systems in the HEK293 cell line. The results of eQTL analysis, conducted using the publically accessible data, showed that the risk alleles of rs4679868 and rs6441286 were significantly associated with decreased expression of IL12A in lymphoblastoid cell lines derived from individuals of Chinese Han ancestry (P = 0.0031 for rs4679868 and P = 0.0073 for rs6441286). In addition, the risk alleles of the 2 SNPs were significantly associated with down-regulation of SCHIP1, a celiac disease susceptible gene, 91.5 kb upstream of IL12A.These results not only demonstrated that IL12A is associated with PBC in the Chinese Han population but also identified a potential mechanism for its involvement in the pathogenesis of PBC.
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Affiliation(s)
- Ping Li
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing (PL, GL, ZW, SC, JL, XW, HZ, FZ, YL) and Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an (GL, YC, MJ), China
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Liu K, Kurien BT, Zimmerman SL, Kaufman KM, Taft DH, Kottyan LC, Lazaro S, Weaver CA, Ice JA, Adler AJ, Chodosh J, Radfar L, Rasmussen A, Stone DU, Lewis DM, Li S, Koelsch KA, Igoe A, Talsania M, Kumar J, Maier-Moore JS, Harris VM, Gopalakrishnan R, Jonsson R, Lessard JA, Lu X, Gottenberg JE, Anaya JM, Cunninghame-Graham DS, Huang AJW, Brennan MT, Hughes P, Illei GG, Miceli-Richard C, Keystone EC, Bykerk VP, Hirschfield G, Xie G, Ng WF, Nordmark G, Eriksson P, Omdal R, Rhodus NL, Rischmueller M, Rohrer M, Segal BM, Vyse TJ, Wahren-Herlenius M, Witte T, Pons-Estel B, Alarcon-Riquelme ME, Guthridge JM, James JA, Lessard CJ, Kelly JA, Thompson SD, Gaffney PM, Montgomery CG, Edberg JC, Kimberly RP, Alarcón GS, Langefeld CL, Gilkeson GS, Kamen DL, Tsao BP, McCune WJ, Salmon JE, Merrill JT, Weisman MH, Wallace DJ, Utset TO, Bottinger EP, Amos CI, Siminovitch KA, Mariette X, Sivils KL, Harley JB, Scofield RH. X Chromosome Dose and Sex Bias in Autoimmune Diseases: Increased Prevalence of 47,XXX in Systemic Lupus Erythematosus and Sjögren's Syndrome. Arthritis Rheumatol 2016; 68:1290-1300. [PMID: 26713507 PMCID: PMC5019501 DOI: 10.1002/art.39560] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 12/15/2015] [Indexed: 12/31/2022]
Abstract
OBJECTIVE More than 80% of autoimmune disease predominantly affects females, but the mechanism for this female bias is poorly understood. We suspected that an X chromosome dose effect accounts for this, and we undertook this study to test our hypothesis that trisomy X (47,XXX; occurring in ∼1 in 1,000 live female births) would be increased in patients with female-predominant diseases (systemic lupus erythematosus [SLE], primary Sjögren's syndrome [SS], primary biliary cirrhosis, and rheumatoid arthritis [RA]) compared to patients with diseases without female predominance (sarcoidosis) and compared to controls. METHODS All subjects in this study were female. We identified subjects with 47,XXX using aggregate data from single-nucleotide polymorphism arrays, and, when possible, we confirmed the presence of 47,XXX using fluorescence in situ hybridization or quantitative polymerase chain reaction. RESULTS We found 47,XXX in 7 of 2,826 SLE patients and in 3 of 1,033 SS patients, but in only 2 of 7,074 controls (odds ratio in the SLE and primary SS groups 8.78 [95% confidence interval 1.67-86.79], P = 0.003 and odds ratio 10.29 [95% confidence interval 1.18-123.47], P = 0.02, respectively). One in 404 women with SLE and 1 in 344 women with SS had 47,XXX. There was an excess of 47,XXX among SLE and SS patients. CONCLUSION The estimated prevalence of SLE and SS in women with 47,XXX was ∼2.5 and ∼2.9 times higher, respectively, than that in women with 46,XX and ∼25 and ∼41 times higher, respectively, than that in men with 46,XY. No statistically significant increase of 47,XXX was observed in other female-biased diseases (primary biliary cirrhosis or RA), supporting the idea of multiple pathways to sex bias in autoimmunity.
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Affiliation(s)
- Ke Liu
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Biji T Kurien
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- U.S. Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Sarah L Zimmerman
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Kenneth M Kaufman
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- U.S. Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - Diana H Taft
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Leah C Kottyan
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Sara Lazaro
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Carrie A Weaver
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - John A Ice
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Adam J Adler
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- U.S. Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - James Chodosh
- Department of Ophthalmology, Howe Laboratory, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts, USA
| | - Lida Radfar
- Department of Oral Diagnosis and Radiology, College of Dentistry, University of Oklahoma Health Sciences Center, Oklahoma City, USA
| | - Astrid Rasmussen
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Donald U Stone
- Dean McGee Eye Institute and Department of Ophthalmology, University of Oklahoma College of Medicine, Oklahoma City, OK, USA
| | - David M Lewis
- Department of Oral Diagnosis and Radiology, College of Dentistry, University of Oklahoma Health Sciences Center, Oklahoma City, USA
| | - Shibo Li
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Kristi A Koelsch
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Ann Igoe
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Mitali Talsania
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jay Kumar
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Jacen S Maier-Moore
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- U.S. Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
- Department of Clinical Laboratory Sciences, University of Texas at El Paso, El Paso, TX 79968
| | - Valerie M Harris
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Rajaram Gopalakrishnan
- Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Roland Jonsson
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen 5021, Norway
- Department of Rheumatology, Haukeland University Hospital, Bergen 5021, Norway
| | - James A Lessard
- Valley Bone & Joint Clinic, 3035 DeMers Avenue, Grand Forks, ND 58201, USA
| | - Xianglan Lu
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | | | - Juan-Manuel Anaya
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario, Bogota, Colombia
| | - Deborah S Cunninghame-Graham
- Division of Genetics and Molecular Medicine and Division of Immunology, Infection and Inflammatory Disease, King's College London, London
| | - Andrew J W Huang
- Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Michael T Brennan
- Department of Oral Medicine, Carolinas Medical Center, Charlotte, NC 28232, USA
| | - Pamela Hughes
- Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Gabor G Illei
- Sjögren's Syndrome Clinic, National Institute of Dental and Craniofacial Research, Molecular Physiology and Therapeutics Branch, National Institutes of Health, Bethesda, MD 20892, USA
| | - Corinne Miceli-Richard
- Department of Rheumatology, Université Paris-Sud, AP-HP, INSERM U1012, Le Kremlin-Bicêtre, France
| | - Edward C Keystone
- Department of Medicine, Mount Sinai Hospital and University of Toronto, Toronto, Ontario
| | | | | | - Gang Xie
- Lunenfeld Tanenbaum and Toronto General Research Institutes, Departments of Medicine, Immunology and Molecular Genetics, University of Toronto, Toronto Ontario
| | - Wan-Fai Ng
- Musculoskeletal Research Group, Institute of Cellular Medicine & NIHR Newcastle Biomedical Research Centre, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Gunnel Nordmark
- Section of Rheumatology, Department of Medical Sciences and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Per Eriksson
- Rheumatology, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Roald Omdal
- Clinical Immunology Unit, Department of Internal Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Nelson L Rhodus
- Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, USA
| | - Maureen Rischmueller
- Rheumatology Department, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia
- Discipline of Medicine, University of Adelaide, Adelaide, SA 5000, Australia
| | - Michael Rohrer
- Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Barbara M Segal
- Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Timothy J Vyse
- Division of Genetics and Molecular Medicine and Division of Immunology, Infection and Inflammatory Disease, King's College London, London
| | | | - Torsten Witte
- Clinic for Immunology and Rheumatology, Hannover Medical School, 30625 Hannover, Germany
| | | | - Marta E Alarcon-Riquelme
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- Center Pfizer, University of Granada, Andalusian Government for Genomics and Oncological Research, PTS Granada, 18016, Spain
| | - Joel M Guthridge
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Judith A James
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Christopher J Lessard
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Jennifer A Kelly
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Susan D Thompson
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Patrick M Gaffney
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Courtney G Montgomery
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Jeffrey C Edberg
- Division of Clinical Immunology and Rheumatology, University of Alabama, Birmingham, AL
| | - Robert P Kimberly
- Division of Clinical Immunology and Rheumatology, University of Alabama, Birmingham, AL
| | - Graciela S Alarcón
- Division of Clinical Immunology and Rheumatology, University of Alabama, Birmingham, AL
| | - Carl L Langefeld
- Center for Public Health Genomics and Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest University, Winston-Salem, NC
| | - Gary S Gilkeson
- Division of Rheumatology & Immunology, Medical University of South Carolina, Charleston, SC
- Ralph H. Johnson VA Medical Center, Charleston, SC
| | - Diane L Kamen
- Division of Rheumatology & Immunology, Medical University of South Carolina, Charleston, SC
| | - Betty P Tsao
- Division of Rheumatology, Department of Medicine, UCLA School of Medicine
| | - W Joseph McCune
- Division of Rheumatology, Department of Medicine, University of Michigan College of Medicine, Ann Arbor, Michigan
| | - Jane E Salmon
- Division of Rheumatology, Hospital for Special Surgery and Weill Cornell Medical College, New York, NY
| | - Joan T Merrill
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Michael H Weisman
- Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Daniel J Wallace
- Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Tammy O Utset
- University of Chicago Pritzker School of Medicine, Chicago, IL
| | - Erwin P Bottinger
- Charles R. Bronfman Institute for personalized medicine, Mount Sinai Hospital, 1468 Madison Avenue, New York, NY 10029
| | - Christopher I Amos
- Department of Community and Family Medicine, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
| | - Katherine A Siminovitch
- Lunenfeld Tanenbaum and Toronto General Research Institutes, Departments of Medicine, Immunology and Molecular Genetics, University of Toronto, Toronto Ontario
| | - Xavier Mariette
- Rhumatologie, Responsable de l'Unité de Recherche Clinique Hôpitaux Universitaire Paris-Sud Université Paris-Sud, INSERM U1184 Head of Autoimmunity team, IMVA : Immunology of viral Infections and Autoimmune Diseases
| | - Kathy L Sivils
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - John B Harley
- Center for Autoimmune Genomics and Etiology (CAGE), Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
- U.S. Department of Veterans Affairs Medical Center, Cincinnati, Ohio, USA
| | - R Hal Scofield
- College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Arthritis & Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- U.S. Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
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Huang C, Tian Y, Cui Y, Xu J, Xin L, Yang X, Qi D. [Current Research of the Roles of IL-35 in Tumor Progression]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2016; 19:230-5. [PMID: 27118652 PMCID: PMC5999808 DOI: 10.3779/j.issn.1009-3419.2016.04.09] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Interleukin(IL)-35 is a new member of the interleukin-12 superfamily. Since its first report in 2007, IL-35 rapidly became a research highlight in the field of immunology. Like other IL-12 superfamily members, IL-35 was a heterodimer which was composed of an α chain P35 and a β chain Epstein-Barr virus induced gene 3 (EBI3). Recent research work revealed two distinct roles of IL-35. Firstly, IL-35 is highly expressed in some kinds of inflammatory diseases and autoimmune diseases and plays import roles in the pathogenesis. Secondly, IL-35 is positively expressed in some cancers and plays some roles in the process of tumor progression. Here we demonstrate the structure and the signalling of IL-35. We reviewed the the roles of IL-35 in promoting tumor progression.
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Affiliation(s)
- Chongbiao Huang
- Department of Senior Ward, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Ye Tian
- Department of Senior Ward, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Yan Cui
- Department of Senior Ward, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Jie Xu
- Department of Senior Ward, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Liang Xin
- Department of Senior Ward, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Xueling Yang
- Department of Interventional Treatment, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Daliang Qi
- Department of Senior Ward, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
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176
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Li P, Lu G, Wang L, Cui Y, Wu Z, Chen S, Li J, Wen X, Zhang H, Mu S, Zhang F, Li Y. A rare nonsynonymous variant in the lipid metabolic gene HELZ2 related to primary biliary cirrhosis in Chinese Han. Allergy Asthma Clin Immunol 2016; 12:14. [PMID: 27047549 PMCID: PMC4819269 DOI: 10.1186/s13223-016-0120-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 02/17/2016] [Indexed: 02/01/2023] Open
Abstract
Background Several genome-wide association studies of primary biliary cirrhosis (PBC) in European and Japanese origins have shown significant association of dozens of genetic loci contributive to the susceptibility of PBC. Most of the loci were related to immune response pathway. In this study, we tested whether the lipid metabolic gene HELZ2 was associated with the pathogenesis of PBC. Methods In 586 PBC cases (358 in case 1 group and 201 in case 2 group) and 726 healthy controls of Chinese Han, six nonsynonymous SNPs were genotyped by MassArray iPLEX. The same control were used for the two groups of PBC cases. Allele frequencies were calculated by χ2 test based on 2 × 2 contingency tables. All data were analyzed using the PLINK tool set. The odds ratio (OR) and 95 % confidence interval (95 % CI) were calculated, and p values (corrected for multiple testing by Bonferroni adjustment) less than 0.05 were considered statistically significant. Results The A allele of rs79267778 was significantly associated with PBC (ORcombined = 4.204 [1.670–10.582], pcombined = 1.87E−04). It changed the amino acid at position 1904 (NM_001037335) from Threonine (ACG) to Methionine (ATG). This site was highly conserved in mammals and predicted to be POSSIBLY DAMAGING with a score of 0.469 by PolyPhen-2. It’s further predicted that T1904 M could INCREASE the protein stability with a confidence at 25.18 % under the condition of pH 7.0 and 37 °C. Conclusion The result was the first time to show evidence of the lipid metabolic gene HELZ2 related to autoimmune disease, at least in PBC of Chinese Han.
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Affiliation(s)
- Ping Li
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Guanting Lu
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China.,Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Li Wang
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Ying Cui
- Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Ziyan Wu
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Si Chen
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Jing Li
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Xiaoting Wen
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Haoze Zhang
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Shijie Mu
- Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Fengchun Zhang
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
| | - Yongzhe Li
- Key Laboratory of Rheumatology and Clinical Immunology, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Ministry of Education, Beijing, China
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177
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Shimoda S, Tanaka A. It is time to change primary biliary cirrhosis (PBC): New nomenclature from "cirrhosis" to "cholangitis", and upcoming treatment based on unveiling pathology. Hepatol Res 2016; 46:407-15. [PMID: 26518139 DOI: 10.1111/hepr.12615] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 10/22/2015] [Accepted: 10/26/2015] [Indexed: 12/15/2022]
Abstract
Primary biliary cirrhosis (PBC) is a chronic, organ-specific, autoimmune liver disease characterized by progressive cholestasis, eventually leading to cirrhosis. Several lines of evidence have revealed a crucial role of adaptive as well as innate immune responses in the etiopathogenesis of PBC, and more recently, the biology of bile duct cells and genome-wide association studies (GWAS) demonstrated several key molecules and pathways in this enigmatic disease. Although ursodeoxycholic acid (UDCA) has been the only approved drug for PBC with clinical evidences for improvement of long-term outcomes, a substantial population have suboptimal responses to UDCA, resulting in unfavorable outcomes. In this regard, second-line treatment for patients refractory to UDCA is strongly awaited. In Japan, bezafibrate (BF) has been frequently used for this purpose, yet recent clinical trials failed to clearly demonstrate clinical efficacy of BF. Novel pharmacotherapies targeted to key molecules and pathways in PBC are upcoming. Finally, we sincerely call on all members of the Japan Society of Hepatology to use from this moment on the name "primary biliary cholangitis" for the disease known by its abbreviation PBC, in keeping with a very recent global agreement.
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Affiliation(s)
- Shinji Shimoda
- Department of Medicine and Biosystemic Science, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Atsushi Tanaka
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
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178
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Kochi Y. Genetics of autoimmune diseases: perspectives from genome-wide association studies. Int Immunol 2016; 28:155-61. [PMID: 26857735 DOI: 10.1093/intimm/dxw002] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Accepted: 02/01/2016] [Indexed: 02/07/2023] Open
Abstract
Genome-wide association studies (GWASs) for autoimmune diseases (ADs) have identified many risk loci and have provided insights into the etiology of each disease. Some of these loci, such asPTPN22,IL23RandSTAT4, are shared among different ADs, and the combination of risk loci may determine an individual's susceptibility for a disease. The majority of GWAS loci are expression quantitative trait loci (eQTLs), where disease-causing variants regulate expression of neighboring (or sometimes distant) genes. Because the eQTL effects are often cell type-specific, the incorporation of epigenetic data from disease-related cell types and tissues is expected to refine the identification of causal variants. The cumulative eQTL effects in multiple genes may influence the activity or fate of immune cells, which in turn may affect the function of the immune system in individuals. In this paper, I review the etiology of ADs by focusing on important immune cells (Th1 cells, Th17 cells and regulatory T cells), important pathways (antigen-receptor signaling and type I interferon signaling) and relevant genes identified in GWASs.
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Affiliation(s)
- Yuta Kochi
- Laboratory for Autoimmune Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo 113-8655, Japan
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179
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Tang R, Wei Y, Li Z, Chen H, Miao Q, Bian Z, Zhang H, Wang Q, Wang Z, Lian M, Yang F, Jiang X, Yang Y, Li E, Seldin MF, Gershwin ME, Liao W, Shi Y, Ma X. A Common Variant in CLDN14 is Associated with Primary Biliary Cirrhosis and Bone Mineral Density. Sci Rep 2016; 6:19877. [PMID: 26842849 PMCID: PMC4740766 DOI: 10.1038/srep19877] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 12/16/2015] [Indexed: 12/22/2022] Open
Abstract
Primary biliary cirrhosis (PBC), a chronic autoimmune liver disease, has been associated with increased incidence of osteoporosis. Intriguingly, two PBC susceptibility loci identified through genome-wide association studies are also involved in bone mineral density (BMD). These observations led us to investigate the genetic variants shared between PBC and BMD. We evaluated 72 genome-wide significant BMD SNPs for association with PBC using two European GWAS data sets (n = 8392), with replication of significant findings in a Chinese cohort (685 cases, 1152 controls). Our analysis identified a novel variant in the intron of the CLDN14 gene (rs170183, Pfdr = 0.015) after multiple testing correction. The three associated variants were followed-up in the Chinese cohort; one SNP rs170183 demonstrated consistent evidence of association in diverse ethnic populations (Pcombined = 2.43 × 10(-5)). Notably, expression quantitative trait loci (eQTL) data revealed that rs170183 was correlated with a decline in CLDN14 expression in both lymphoblastoid cell lines and T cells (Padj = 0.003 and 0.016, respectively). In conclusion, our study identified a novel PBC susceptibility variant that has been shown to be strongly associated with BMD, highlighting the potential of pleiotropy to improve gene discovery.
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Affiliation(s)
- Ruqi Tang
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Yiran Wei
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Zhiqiang Li
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200030, China
| | - Haoyan Chen
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Qi Miao
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Zhaolian Bian
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Haiyan Zhang
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Qixia Wang
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Zhaoyue Wang
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Min Lian
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Fan Yang
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Xiang Jiang
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Yue Yang
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Enling Li
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
| | - Michael F. Seldin
- Department of Biochemistry and Molecular Medicine, University of California at Davis, Davis, CA 95616, USA
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis School of Medicine, Genome and Biomedical Sciences Facility, 451 Health Sciences Drive, Suite 6510, Davis, CA 95616, USA
| | - M. Eric Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis School of Medicine, Genome and Biomedical Sciences Facility, 451 Health Sciences Drive, Suite 6510, Davis, CA 95616, USA
| | - Wilson Liao
- Department of Dermatology, University of California San Francisco School of Medicine, 1701 Dividadero Street, San Francisco, CA 94415, USA
| | - Yongyong Shi
- Department of Biochemistry and Molecular Medicine, University of California at Davis, Davis, CA 95616, USA
| | - Xiong Ma
- State Key Laboratory for Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai 200001, China
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180
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Abstract
The immune-mediated hepatobiliary diseases, primary biliary cirrhosis and primary sclerosing cholangitis are relatively rare, albeit and account for a significant amount of liver transplant activity and liver-related mortality globally. Precise disease mechanisms are yet to be described although a contributory role of genetic predisposition is firmly established. In addition to links with the major histocompatibility complex, a number of associations outside this region harbor additional loci which underscore the fundamental role of breaks in immune tolerance and mucosal immunogenicity in the pathogenesis of autoimmune biliary disease. We provide an overview of these key discoveries before discussing putative avenues of therapeutic exploitation based on existing findings.
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181
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Abstract
All patients with primary biliary cirrhosis (PBC) and abnormal liver biochemistry should be considered for specific therapy. Ursodeoxycholic acid (UDCA) is the only FDA-approved drug for treating PBC. Approximately 40% of patients with PBC respond incompletely to treatment with UDCA, thus having increased risk of death or need for liver transplantation. No second-line therapies for patients with inadequate response to UDCA therapy have been approved. This review provides a current perspective on potential new approaches to treatment in PBC, and highlights some of the challenges we face in evaluating and effectively implementing those treatments.
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Affiliation(s)
- Frank Czul
- University of Miami Miller School of Medicine, 1500 Northwest, 12th Avenue, Suite 1101, Miami, FL 33136, USA
| | - Cynthia Levy
- Division of Hepatology, University of Miami Miller School of Medicine, University of Miami, 1500 Northwest, 12th Avenue, Suite 1101, Miami, FL 33136, USA.
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182
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Gonzalez-Moreno EI, Martinez-Cabriales SA, Cruz-Moreno MA, Borjas-Almaguer OD, Cortez-Hernandez CA, Bosques-Padilla FJ, Garza AA, Gonzalez-Gonzalez JA, Garcia-Compean D, Ocampo-Candiani J, Maldonado-Garza HJ. Primary biliary cholangitis associated with warm autoimmune hemolytic anemia. J Dig Dis 2016; 17:128-31. [PMID: 26630456 DOI: 10.1111/1751-2980.12303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Revised: 10/17/2015] [Accepted: 11/26/2015] [Indexed: 02/05/2023]
Abstract
There are many autoimmune diseases associated with primary biliary cholangitis (PBC), known as primary biliary cirrhosis; however, the association between PBC and warm autoimmune hemolytic anemia (wAIHA) has rarely been reported. It is documented that hemolysis is present in over 50% of the patients with chronic liver disease, regardless of the etiologies. Due to the clear and frequent relationship between PBC and many autoimmune diseases, it is reasonable to suppose that wAIHA may be another autoimmune disorder seen in association with PBC. Here we reported a 53-year-old female patient diagnosed with wAIHA associated with PBC.
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Affiliation(s)
- Emmanuel I Gonzalez-Moreno
- Gastroenterology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Sylvia A Martinez-Cabriales
- Dermatology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Miguel A Cruz-Moreno
- Internal Medicine Department, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Omar D Borjas-Almaguer
- Internal Medicine Department, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Carlos A Cortez-Hernandez
- Gastroenterology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Francisco J Bosques-Padilla
- Gastroenterology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Aldo A Garza
- Gastroenterology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Jose A Gonzalez-Gonzalez
- Gastroenterology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Diego Garcia-Compean
- Gastroenterology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Jorge Ocampo-Candiani
- Dermatology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Hector J Maldonado-Garza
- Gastroenterology Division, Hospital Universitario 'Dr. José Eleuterio González', Universidad Autónoma de Nuevo León, Monterrey, Mexico
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183
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Microarray and whole-exome sequencing analysis of familial Behçet's disease patients. Sci Rep 2016; 6:19456. [PMID: 26785681 PMCID: PMC4726226 DOI: 10.1038/srep19456] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 12/14/2015] [Indexed: 12/24/2022] Open
Abstract
Behçet’s disease (BD), a chronic systemic inflammatory disorder, is characterized by recurrent oral and genital mucous ulcers, uveitis, and skin lesions. We performed DNA microarray analysis of peripheral blood mononuclear cell (PBMC) mRNA from 41 Japanese BD patients and revealed elevated levels of interleukin (IL) 23 receptor (IL23R) mRNA in many BD patients. DNA sequencing around a SNV (Rs12119179) tightly linked to BD revealed an elevated frequency of the C genotype, consistent with a previous report that IL23R is a susceptibility locus for BD. Notably, four of these BD patients are members of familial BD; a whole-exome sequencing (WES) of these BD patients identified 19 novel single-nucleotide variations (SNVs) specific to these patients. They include heterozygous SNVs in the genes encoding IL-1 receptor-associated kinase 4 (IRAK4), nucleotide-binding oligomerization domain (NOD)-like receptor family pyrin domain-containing 14 (NRP14) and melanoma antigen-encoding gene E2 (MAGEE2); IRAK4 harbors a missense mutation, whereas NRP14 and MAGEE2 harbor nonsense mutations. These SNVs may serve as genetic markers that characterize BD.
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184
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Zhang AP, Yang JH. Advances in understanding pathogenesis of primary biliary cholangitis. Shijie Huaren Xiaohua Zazhi 2016; 24:169-175. [DOI: 10.11569/wcjd.v24.i2.169] [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] [Indexed: 02/06/2023] Open
Abstract
Primary biliary cholangitis (PBC) is an autoimmune liver disease characterized by chronic and progressive cholestasis. In recent years, the incidence and prevalence of PBC are increasing year by year. However, the etiology and pathogenesis are not fully understood. It is believed that genetic susceptibility, environmental factors, and immunologic tolerance are related with the pathogenesis of PBC. This article reviews the progress in the understanding of the pathogenesis of PBC.
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185
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Sela U, Park CG, Park A, Olds P, Wang S, Steinman RM, Fischetti VA. Dendritic Cells Induce a Subpopulation of IL-12Rβ2-Expressing Treg that Specifically Consumes IL-12 to Control Th1 Responses. PLoS One 2016; 11:e0146412. [PMID: 26745371 PMCID: PMC4706322 DOI: 10.1371/journal.pone.0146412] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 12/16/2015] [Indexed: 12/24/2022] Open
Abstract
Cytokines secreted from dendritic cells (DCs) play an important role in the regulation of T helper (Th) cell differentiation and activation into effector cells. Therefore, controlling cytokine secretion from DCs may potentially regulate Th differentiation/activation. DCs also induce de-novo generation of regulatory T cells (Treg) that modulate the immune response. In the current study we used the mixed leukocyte reaction (MLR) to investigate the effect of allospecific Treg on IL-12, TNFα and IL-6 secretion by DCs. Treg cells were found to markedly down-regulate IL-12 secretion from DCs following stimulation with TLR7/8 agonist. This down-regulation of IL-12 was neither due to a direct suppression of its production by the DCs nor a result of marked DC death. We found that IL-12 was rather actively consumed by Treg cells. IL-12 consumption was mediated by a subpopulation of IL-12Rβ2-expressing Treg cells and was dependent on MHC class-II expressed on dendritic cells. Furthermore, IL-12 consumption by Tregs increased their suppressive effect on T cell proliferation and Th1 activation. These results provide a new pathway of Th1 response regulation where IL-12 secreted by DCs is consumed by a sub-population of IL-12Rβ2-expressing Treg cells. Consumption of IL-12 by Tregs not only reduces the availability of IL-12 to Th effector cells but also enhances the Treg immunosuppressive effect. This DC-induced IL-12Rβ2-expressing Treg subpopulation may have a therapeutic advantage in suppressing Th1 mediated autoimmunity.
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Affiliation(s)
- Uri Sela
- Laboratory of Cellular Physiology and Immunology, Chris Browne Center for Immunology and Immune Disease, The Rockefeller University, New York, NY, 10065, United States of America
- Laboratory of Bacterial Pathogenesis and Immunology, The Rockefeller University, New York, NY, 10065, United States of America
- * E-mail:
| | - Chae Gyu Park
- Laboratory of Cellular Physiology and Immunology, Chris Browne Center for Immunology and Immune Disease, The Rockefeller University, New York, NY, 10065, United States of America
- Laboratory of Immunology, Brain Korea 21 PLUS Project for Medical Science, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Andrew Park
- Laboratory of Cellular Physiology and Immunology, Chris Browne Center for Immunology and Immune Disease, The Rockefeller University, New York, NY, 10065, United States of America
| | - Peter Olds
- Laboratory of Cellular Physiology and Immunology, Chris Browne Center for Immunology and Immune Disease, The Rockefeller University, New York, NY, 10065, United States of America
| | - Shu Wang
- Laboratory of Bacterial Pathogenesis and Immunology, The Rockefeller University, New York, NY, 10065, United States of America
| | - Ralph M. Steinman
- Laboratory of Cellular Physiology and Immunology, Chris Browne Center for Immunology and Immune Disease, The Rockefeller University, New York, NY, 10065, United States of America
| | - Vincent A. Fischetti
- Laboratory of Bacterial Pathogenesis and Immunology, The Rockefeller University, New York, NY, 10065, United States of America
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186
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Wang J, Yang G, Dubrovsky AM, Choi J, Leung PSC. Xenobiotics and loss of tolerance in primary biliary cholangitis. World J Gastroenterol 2016; 22:338-348. [PMID: 26755880 PMCID: PMC4698496 DOI: 10.3748/wjg.v22.i1.338] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/15/2015] [Accepted: 12/01/2015] [Indexed: 02/06/2023] Open
Abstract
Data from genome wide association studies and geoepidemiological studies established that a combination of genetic predisposition and environmental stimulation is required for the loss of tolerance in primary biliary cholangitis (PBC). The serologic hallmark of PBC are the presence of high titer anti-mitochondrial autoantibodies (AMA) that recognize the lipoyl domain of the mitochondrial pyruvate dehydrogenase E2 (PDC-E2) subunit. Extensive efforts have been directed to investigate the molecular basis of AMA. Recently, experimental data has pointed to the thesis that the breaking of tolerance to PDC-E2 is a pivotal event in the initial etiology of PBC, including environmental xenobiotics including those commonly found in cosmetics and food additives, suggesting that chemical modification of the PDC-E2 epitope may render its vulnerable to become a neo-antigen and trigger an immune response in genetically susceptible hosts. Here, we will discuss the natural history, genetics and immunobiology of PBC and structural constraints of PDC-E2 in AMA recognition which makes it vulnerable to chemical modification.
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187
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Makino T, Jinnin M. Genetic and epigenetic abnormalities in systemic sclerosis. J Dermatol 2016; 43:10-8. [DOI: 10.1111/1346-8138.13221] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 10/15/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Takamitsu Makino
- Department of Dermatology and Plastic Surgery; Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
| | - Masatoshi Jinnin
- Department of Dermatology and Plastic Surgery; Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
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188
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Webb GJ, Hirschfield GM. Using GWAS to identify genetic predisposition in hepatic autoimmunity. J Autoimmun 2016; 66:25-39. [PMID: 26347073 DOI: 10.1016/j.jaut.2015.08.016] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 08/23/2015] [Indexed: 12/20/2022]
Abstract
Primary biliary cirrhosis (PBC), primary sclerosing cholangitis (PSC) and autoimmune hepatitis (AIH) represent the three major hepatic autoimmune conditions. Patient morbidity and mortality remain high across these three diseases, and an unmet need for rational therapy exists. Disease understanding has focused on combining clinical and laboratory based science to provide better insights into the joint host and environmental factors necessary for the initiation, and perpetuation, of hepato-biliary inflammation. Twin studies, family studies, population studies and an inter-relationship with other autoimmune phenomena suggest a genetic component to risk for each disease. Until recently, understanding of this genetic risk has been limited to HLA haplotypes. Associations with risk-conferring and protective HLA haplotypes are present in all three diseases. Over the last few years, genome-wide association studies (GWAS), and related genetic association studies, have greatly increased understanding of the genetic risk signature of these three diseases and autoimmunity in general. Here we consider the rationale for GWAS in general and with specific reference to hepatic autoimmunity. We consider the process of GWAS, and highlight major findings to date. Potential functional implications of key findings are discussed including the IL-12/STAT4 pathway in PBC and the CD28/IL-2 pathway in PSC. We describe the marked pleiotropy demonstrated by PBC and PSC, which is consistent with other autoimmune diseases. Further, we focus on specific gene associations including SH2B3, which is common to all three diseases, and FUT2 in PSC, which represents a link between environment and genetics. We review attempts to translate GWAS findings into basic laboratory models including in vivo systems and highlight where clinical observations relate to genetics. Finally we describe deficiencies in GWAS to date and consider future study of genetics in hepatic autoimmunity.
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Affiliation(s)
- G J Webb
- NIHR Birmingham Liver Biomedical Research Unit, University of Birmingham, Birmingham, UK
| | - G M Hirschfield
- NIHR Birmingham Liver Biomedical Research Unit, University of Birmingham, Birmingham, UK.
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189
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Dong M, Li J, Tang R, Zhu P, Qiu F, Wang C, Qiu J, Wang L, Dai Y, Xu P, Gao Y, Han C, Wang Y, Wu J, Wu X, Zhang K, Dai N, Sun W, Zhou J, Hu Z, Liu L, Jiang Y, Nie J, Zhao Y, Gong Y, Tian Y, Ji H, Jiao Z, Jiang P, Shi X, Jawed R, Zhang Y, Huang Q, Li E, Wei Y, Xie W, Zhao W, Liu X, Zhu X, Qiu H, He G, Chen W, Seldin MF, Gershwin ME, Liu X, Ma X. Multiple genetic variants associated with primary biliary cirrhosis in a Han Chinese population. Clin Rev Allergy Immunol 2016; 48:316-21. [PMID: 25690649 DOI: 10.1007/s12016-015-8472-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Multiple genome-wide association studies of primary biliary cirrhosis (PBC) in both European and Japanese ancestries have shown significant associations of many genetic loci contributing to the susceptibility to PBC. Major differences in susceptibility loci between these two population groups were observed. In this study, we examined whether the most significant loci observed in either European and/or Japanese cohorts are associated with PBC in a Han Chinese population. In 1070 PBC patients and 1198 controls, we observed highly significant associations at CD80 (rs2293370, P = 2.67 × 10(-8)) and TNFSF15 (rs4979462, P = 3.86 × 10(-8)) and significant associations at 17q12-21 (rs9303277), PDGFB (rs715505), NF-κB1 (rs7665090), IL12RB2 (rs11209050), and STAT4 (rs7574865; all corrected P values <0.01). However, no association was observed for POU2AF1 (rs4938534), IL12A (rs485499 and rs2366408), IL7R (rs6897932), CXCR5 (rs715412), SOCS1 (rs725613), and TNFRSF1A (rs1800693). STAT4 (rs7574865) was strongly associated after additional control samples were analyzed. Our study is the first large-scale genetic analysis in a Han Chinese PBC cohort. These results do not only reflect that Han Chinese PBC patients share common genetic susceptibility genes with both their Japanese and European counterparts but also suggest a distinctly different genetic susceptibility profile.
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Affiliation(s)
- Ming Dong
- Key Laboratory of Developmental Genes and Human Diseases, Institute of Life Sciences, Southeast University, 210096, Nanjing, Jiangsu, China
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190
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Floreani A, Franceschet I, Perini L, Cazzagon N, Gershwin ME, Bowlus CL. New therapies for primary biliary cirrhosis. Clin Rev Allergy Immunol 2016; 48:263-72. [PMID: 25331740 DOI: 10.1007/s12016-014-8456-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Primary biliary cirrhosis (PBC) is a rare inflammatory liver disease for which ursodeoxycholic acid (UDCA) is the only therapy approved by the U.S. Food and Drug Administration. Patients with a biochemical response to UDCA therapy have a similar survival rate compared to the general population. However, up to 40% of PBC patients do not achieve a complete response to UDCA, have an increased risk of liver-related death and liver transplantation, and represent a persistent medical need for new therapies. Several novel drugs have recently been studied and show potential efficacy in PBC. Obeticholic acid, a farnesoid X receptor agonist, has been tested in phase II trials and initial results after 1 year in a phase III international trial suggest that it may be effective in achieving a biochemical response in approximately 40% of patients who do not completely respond to UDCA. Several small studies on fibrates have suggested that they may have efficacy, but larger studies are needed. Surprisingly, results of immunomodulators and biologics have not yet been able to demonstrate efficacy, but new approaches have shown promise in animal models and their translation to human clinical trials are awaited.
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Affiliation(s)
- Annarosa Floreani
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy,
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191
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Cherednichenko AA, Trifonova EA, Vagaitseva KV, Bocharova AV, Varzari AM, Radzhabov MO, Stepanov VA. Prevalence of gene polymorphisms associated with immune disorders in populations of Northern Eurasia. Mol Biol 2015. [DOI: 10.1134/s0026893315060047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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192
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Genetic factors affect the etiology, clinical characteristics and outcome of autoimmune hepatitis. Clin J Gastroenterol 2015; 8:360-6. [DOI: 10.1007/s12328-015-0620-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 11/19/2015] [Indexed: 02/06/2023]
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193
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You Y, Zhai ZF, Chen FR, Chen W, Hao F. Autoimmune risk loci of IL12RB2, IKZF1, XKR6, TMEM39A and CSK in Chinese patients with systemic lupus erythematosus. ACTA ACUST UNITED AC 2015; 85:200-3. [PMID: 25720506 DOI: 10.1111/tan.12522] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 01/04/2015] [Accepted: 01/13/2015] [Indexed: 12/20/2022]
Abstract
Recent genome-wide or follow-up studies conducted in European or Caucasian populations have identified single nucleotide polymorphisms (SNPs) conferring increased risk to autoimmune diseases. It is unclear whether these observations can apply to systemic lupus erythematosus (SLE) in China. An association study was performed on 395 SLE patients and 378 healthy controls recruited from the Chinese population, in which the IL12RB2 rs3790567, IKZF1 rs2366293, XKR6 rs4240671, TMEM39A rs1132200 and CSK rs34933034 polymorphisms were examined by Matrix Assisted Laser Desorption Time of Flight Mass Spectrometry. The frequency of the A allele of IL12RB2 rs3790567 was lower in the cases compared with the controls (24.8% vs 30.2%, P = 0.018) and significant difference among the AA, AG and GG genotypes of rs3790567 was detected between the SLE patients and healthy controls (P = 0.020). We also found a statistically significant difference in the dominant model (GG+AG vs AA, P = 0.008). There was no correlation between the genotypes and specific sub-phenotypes in the current cohort. Associations with IKZF1 rs2366293, XKR6 rs4240671, TMEM39A rs1132200 and CSK rs34933034 were also lacking (P > 0.05). The results supported the theory that IL12RB2 is associated with SLE in the Chinese population.
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Affiliation(s)
- Y You
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing, P.R. China
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194
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Prigione I, Covone AE, Giacopelli F, Bocca P, Risso M, Tripodi G, Pistorio A, Sozzi G, Airoldi I, Ravazzolo R, Pistoia V. IL12RB2 Polymorphisms correlate with risk of lung adenocarcinoma. Immunobiology 2015; 221:291-9. [PMID: 26547104 DOI: 10.1016/j.imbio.2015.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 10/24/2015] [Indexed: 10/22/2022]
Abstract
In a previous study, lack of IL-12 signaling in il12rb2 knock-out mice was found to predispose to lung adenocarcinoma (LAC). We asked whether specific polymorphisms of the human IL12RB2 gene may confer susceptibility to LAC. We studied IL12RB2 single nucleotide polymorphisms (SNPs) spanning from the promoter to the first untranslated exon of the gene. Genotypes of 49 individuals with LAC were compared with those of 93 healthy subjects. Two allele variants were found to be associated with increased susceptibility to LAC. One haplotype (hap), hap18, was more frequent in patients (18%) versus controls (6%) and significantly associated with increased probability of disease occurrence. Furthermore, IL-12 driven STAT4 phosphorylation in T cell blasts from healthy individuals was found to correlate with both single allele variants and haplotypes. In conclusion, genetically determined low signaling activity of IL-12R predisposes to the development of LAC.
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Affiliation(s)
- Ignazia Prigione
- U.O.C. Laboratorio di Oncologia, Istituto Giannina Gaslini, Genova, Italy.
| | | | | | - Paola Bocca
- U.O.C. Laboratorio di Oncologia, Istituto Giannina Gaslini, Genova, Italy
| | - Marco Risso
- U.O.C. Immunoematologia e Medicina Trasfusionale, Istituto Giannina Gaslini, Genova, Italy
| | - Gino Tripodi
- U.O.C. Immunoematologia e Medicina Trasfusionale, Istituto Giannina Gaslini, Genova, Italy
| | - Angela Pistorio
- U.O.S.D. Epidemiologia, Biostatistica e Comitati, Istituto Giannina Gaslini, Genova, Italy
| | - Gabriella Sozzi
- S.C. Genomica Tumorale, Fondazione IRCCS Istituto Nazionale dei Tumori Milano, Italy
| | - Irma Airoldi
- U.O.C. Laboratorio di Oncologia, Istituto Giannina Gaslini, Genova, Italy
| | - Roberto Ravazzolo
- U.O.C. Genetica Medica, Istituto Giannina Gaslini, Genova, Italy; Università degli Studi di Genova, Genova, Italy
| | - Vito Pistoia
- U.O.C. Laboratorio di Oncologia, Istituto Giannina Gaslini, Genova, Italy
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195
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Abstract
Genome-wide association studies (GWASs) have been a significant technological advance in our ability to evaluate the genetic architecture of complex diseases such as primary biliary cirrhosis (PBC). To date, six large-scale studies have been performed that have identified 27 risk loci in addition to human leukocyte antigen (HLA) associated with PBC. The identified risk variants emphasize important disease concepts; namely, that disturbances in immunoregulatory pathways are important in the pathogenesis of PBC and that such perturbations are shared among a diverse number of autoimmune diseases-suggesting the risk architecture may confer a generalized propensity to autoimmunity not necessarily specific to PBC. Furthermore, the impact of non-HLA risk variants, particularly in genes involved with interleukin-12 signaling, and ethnic variation in conferring susceptibility to PBC have been highlighted. Although GWASs have been a critical stepping stone in understanding common genetic variation contributing to PBC, limitations pertaining to power, sample availability, and strong linkage disequilibrium across genes have left us with an incomplete understanding of the genetic underpinnings of disease pathogenesis. Future efforts to gain insight into this missing heritability, the genetic variation that contributes to important disease outcomes, and the functional consequences of associated variants will be critical if practical clinical translation is to be realized.
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Affiliation(s)
- Aliya F. Gulamhusein
- Division of Gastroenterology and Hepatology and the Mayo Clinic Center for Cell Signaling, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905
| | - Brian D. Juran
- Division of Gastroenterology and Hepatology and the Mayo Clinic Center for Cell Signaling, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905
| | - Konstantinos N. Lazaridis
- Division of Gastroenterology and Hepatology and the Mayo Clinic Center for Cell Signaling, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905. Phone: (507) 538-4877. Fax: (507) 284-0762
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196
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Seldin MF. The genetics of human autoimmune disease: A perspective on progress in the field and future directions. J Autoimmun 2015; 64:1-12. [PMID: 26343334 PMCID: PMC4628839 DOI: 10.1016/j.jaut.2015.08.015] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 08/23/2015] [Indexed: 12/18/2022]
Abstract
Progress in defining the genetics of autoimmune disease has been dramatically enhanced by large scale genetic studies. Genome-wide approaches, examining hundreds or for some diseases thousands of cases and controls, have been implemented using high throughput genotyping and appropriate algorithms to provide a wealth of data over the last decade. These studies have identified hundreds of non-HLA loci as well as further defining HLA variations that predispose to different autoimmune diseases. These studies to identify genetic risk loci are also complemented by progress in gene expression studies including definition of expression quantitative trait loci (eQTL), various alterations in chromatin structure including histone marks, DNase I sensitivity, repressed chromatin regions as well as transcript factor binding sites. Integration of this information can partially explain why particular variations can alter proclivity to autoimmune phenotypes. Despite our incomplete knowledge base with only partial definition of hereditary factors and possible functional connections, this progress has and will continue to facilitate a better understanding of critical pathways and critical changes in immunoregulation. Advances in defining and understanding functional variants potentially can lead to both novel therapeutics and personalized medicine in which therapeutic approaches are chosen based on particular molecular phenotypes and genomic alterations.
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Affiliation(s)
- Michael F Seldin
- Department of Biochemistry and Molecular Medicine, University of California, Davis, Tupper Hall Room 4453, Davis, CA 95616, USA; Division of Rheumatology and Allergy, Department of Medicine, University of California, Davis, Tupper Hall Room 4453, Davis, CA 95616, USA.
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197
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Mekli K, Marshall A, Nazroo J, Vanhoutte B, Pendleton N. Genetic variant of Interleukin-18 gene is associated with the Frailty Index in the English Longitudinal Study of Ageing. Age Ageing 2015; 44:938-42. [PMID: 26396182 PMCID: PMC4621230 DOI: 10.1093/ageing/afv122] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 06/17/2015] [Indexed: 01/30/2023] Open
Abstract
Background: the term frailty refers to a condition of increased vulnerability to stressors among older people, leading to a decline in homeostatic reserve. Frailty often leads to falls, hospitalisation and mortality, hence its importance for the delivery of health care to older adults. The pathophysiological mechanisms behind frailty are not well understood, but the decreased steroid-hormone production and elevated chronic systemic inflammation of older people appear to be major contributors. Method: we used a sample of 3,160 individuals aged 50 or older from the English Longitudinal Study of Ageing and assessed their frailty status according to a Frailty Index. We selected 620 single nucleotide polymorphisms in genes involved in the steroid hormone or inflammatory pathways. We performed linear association analysis. The outcome variable was the square root transformation of the Frailty Index, with age and sex entered as covariates. Results: the strongest signal was detected in the pro-inflammatory Interleukin-18 gene (rs360722, P = 0.0021, β = −0.015). Further significant signals were observed in the Interleukin-12 (rs4679868, P = 0.0062, β = −0.008 and rs9852519, P = 0.0077, β = −0.008), low density lipoprotein receptor-related protein 1 (rs1799986, P = 0.0065, β = 0.011) and Selectin-P (rs6131, P = 0.0097, β = −0.01) genes. None of these associations remain significant after Bonferroni correction. Conclusions: we show potential associations between genetic variants of four genes and the frailty index. These genes are involved in the cholesterol transport and inflammatory pathway and, as such, our results provide further support for the involvement of the immunological processes in frailty of the elderly.
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Affiliation(s)
- Krisztina Mekli
- Cathie Marsh Institute for Social Research, University of Manchester, Manchester M13 9PT, UK
| | - Alan Marshall
- Cathie Marsh Institute for Social Research, University of Manchester, Manchester M13 9PT, UK present address: School of Geography and Geosciences, University of St Andrews, St Andrews, UK
| | - James Nazroo
- Cathie Marsh Institute for Social Research, University of Manchester, Manchester M13 9PT, UK
| | - Bram Vanhoutte
- Cathie Marsh Institute for Social Research, University of Manchester, Manchester M13 9PT, UK
| | - Neil Pendleton
- Institute of Brain, Behaviour and Mental Health, University of Manchester, Manchester, UK
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198
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Webb GJ, Siminovitch KA, Hirschfield GM. The immunogenetics of primary biliary cirrhosis: A comprehensive review. J Autoimmun 2015; 64:42-52. [PMID: 26250073 PMCID: PMC5014907 DOI: 10.1016/j.jaut.2015.07.004] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 07/06/2015] [Indexed: 12/20/2022]
Abstract
Primary biliary cirrhosis (PBC), a classic autoimmune liver disease, is characterised by a progressive T cell predominant lymphocytic cholangitis, and a serologic pattern of reactivity in the form of specific anti-mitochondrial antibodies (AMA). CD4+ T cells are particularly implicated by PBC's cytokine signature, the presence of CD4+ T cells specific to mitochondrial auto-antigens, the expression of MHC II on injured biliary epithelial cells, and PBC's coincidence with other similar T cell mediated autoimmune conditions. CD4+ T cells are also central to current animal models of PBC, and their transfer typically also transfers disease. The importance of genetic risk to developing PBC is evidenced by a much higher concordance rate in monozygotic than dizygotic twins, increased AMA rates in asymptomatic relatives, and disproportionate rates of disease in siblings of PBC patients, PBC family members and certain genetically defined populations. Recently, high-throughput genetic studies have greatly expanded our understanding of the gene variants underpinning risk for PBC development, so linking genetics and immunology. Here we summarize genetic association data that has emerged from large scale genome-wide association studies and discuss the evidence for the potential functional significance of the individual genes and pathways identified; we particularly highlight associations in the IL-12-STAT4-Th1 pathway. HLA associations and epigenetic effects are specifically considered and individual variants are linked to clinical phenotypes where data exist. We also consider why there is a gap between calculated genetic risk and clinical data: so-called missing heritability, and how immunogenetic observations are being translated to novel therapies. Ultimately whilst genetic risk factors will only account for a proportion of disease risk, ongoing efforts to refine associations and understand biologic links to disease pathways are hoped to drive more rational therapy for patients.
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Affiliation(s)
- G J Webb
- NIHR Birmingham Liver Biomedical Research Unit, University of Birmingham, Birmingham, UK
| | - K A Siminovitch
- Mount Sinai Hospital, Lunenfeld-Tanenbaum Research Institute, Toronto General Research Institute, and Departments of Immunology and Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - G M Hirschfield
- NIHR Birmingham Liver Biomedical Research Unit, University of Birmingham, Birmingham, UK.
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199
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International genome-wide meta-analysis identifies new primary biliary cirrhosis risk loci and targetable pathogenic pathways. Nat Commun 2015; 6:8019. [PMID: 26394269 PMCID: PMC4580981 DOI: 10.1038/ncomms9019] [Citation(s) in RCA: 190] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 07/03/2015] [Indexed: 12/16/2022] Open
Abstract
Primary biliary cirrhosis (PBC) is a classical autoimmune liver disease for which effective immunomodulatory therapy is lacking. Here we perform meta-analyses of discovery data sets from genome-wide association studies of European subjects (n=2,764 cases and 10,475 controls) followed by validation genotyping in an independent cohort (n=3,716 cases and 4,261 controls). We discover and validate six previously unknown risk loci for PBC (Pcombined<5 × 10−8) and used pathway analysis to identify JAK-STAT/IL12/IL27 signalling and cytokine–cytokine pathways, for which relevant therapies exist. Primary biliary cirrhosis is an autoimmune liver disease with poor therapeutic options. Here Cordell et al. a perform meta-analysis of European genome-wide association studies identifying six novel risk loci and a number of potential therapeutic pathways.
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200
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Mascarenhas R, Pietrzak M, Smith RM, Webb A, Wang D, Papp AC, Pinsonneault JK, Seweryn M, Rempala G, Sadee W. Allele-Selective Transcriptome Recruitment to Polysomes Primed for Translation: Protein-Coding and Noncoding RNAs, and RNA Isoforms. PLoS One 2015; 10:e0136798. [PMID: 26331722 PMCID: PMC4558023 DOI: 10.1371/journal.pone.0136798] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 08/07/2015] [Indexed: 11/19/2022] Open
Abstract
mRNA translation into proteins is highly regulated, but the role of mRNA isoforms, noncoding RNAs (ncRNAs), and genetic variants remains poorly understood. mRNA levels on polysomes have been shown to correlate well with expressed protein levels, pointing to polysomal loading as a critical factor. To study regulation and genetic factors of protein translation we measured levels and allelic ratios of mRNAs and ncRNAs (including microRNAs) in lymphoblast cell lines (LCL) and in polysomal fractions. We first used targeted assays to measure polysomal loading of mRNA alleles, confirming reported genetic effects on translation of OPRM1 and NAT1, and detecting no effect of rs1045642 (3435C>T) in ABCB1 (MDR1) on polysomal loading while supporting previous results showing increased mRNA turnover of the 3435T allele. Use of high-throughput sequencing of complete transcript profiles (RNA-Seq) in three LCLs revealed significant differences in polysomal loading of individual RNA classes and isoforms. Correlated polysomal distribution between protein-coding and non-coding RNAs suggests interactions between them. Allele-selective polysome recruitment revealed strong genetic influence for multiple RNAs, attributable either to differential expression of RNA isoforms or to differential loading onto polysomes, the latter defining a direct genetic effect on translation. Genes identified by different allelic RNA ratios between cytosol and polysomes were enriched with published expression quantitative trait loci (eQTLs) affecting RNA functions, and associations with clinical phenotypes. Polysomal RNA-Seq combined with allelic ratio analysis provides a powerful approach to study polysomal RNA recruitment and regulatory variants affecting protein translation.
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Affiliation(s)
- Roshan Mascarenhas
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Maciej Pietrzak
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio, United States of America
| | - Ryan M. Smith
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Amy Webb
- Department of Biomedical Informatics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Danxin Wang
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Audrey C. Papp
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Julia K. Pinsonneault
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
| | - Michal Seweryn
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio, United States of America
- Department of Mathematics and Computer Science, University of Lodz, Lodz, Poland
- Mathematical Biosciences Institute, The Ohio State University, Columbus, Ohio, United States of America
| | - Grzegorz Rempala
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio, United States of America
- Mathematical Biosciences Institute, The Ohio State University, Columbus, Ohio, United States of America
| | - Wolfgang Sadee
- Center for Pharmacogenomics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
- Department of Medical Genetics, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, United States of America
- * E-mail:
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