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van Linschoten RCA, Jansen FM, Pauwels RWM, Smits LJT, Atsma F, Kievit W, de Jong DJ, de Vries AC, Boekema PJ, West RL, Bodelier AGL, Gisbertz IAM, Wolfhagen FHJ, Römkens TEH, Lutgens MWMD, van Bodegraven AA, Oldenburg B, Pierik MJ, Russel MGVM, de Boer NK, Mallant-Hent RC, Ter Borg PCJ, van der Meulen-de Jong AE, Jansen JM, Jansen SV, Tan ACITL, van der Woude CJ, Hoentjen F. A Prediction Model for Successful Increase of Adalimumab Dose Intervals in Patients with Crohn's Disease: Secondary Analysis of the Pragmatic Open-Label Randomised Controlled Non-inferiority LADI Trial. Dig Dis Sci 2024; 69:2165-2174. [PMID: 38594435 PMCID: PMC11162399 DOI: 10.1007/s10620-024-08410-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 03/26/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND In the pragmatic open-label randomised controlled non-inferiority LADI trial we showed that increasing adalimumab (ADA) dose intervals was non-inferior to conventional dosing for persistent flares in patients with Crohn's disease (CD) in clinical and biochemical remission. AIMS To develop a prediction model to identify patients who can successfully increase their ADA dose interval based on secondary analysis of trial data. METHODS Patients in the intervention group of the LADI trial increased ADA intervals to 3 and then to 4 weeks. The dose interval increase was defined as successful when patients had no persistent flare (> 8 weeks), no intervention-related severe adverse events, no rescue medication use during the study, and were on an increased dose interval while in clinical and biochemical remission at week 48. Prediction models were based on logistic regression with relaxed LASSO. Models were internally validated using bootstrap optimism correction. RESULTS We included 109 patients, of which 60.6% successfully increased their dose interval. Patients that were active smokers (odds ratio [OR] 0.90), had previous CD-related intra-abdominal surgeries (OR 0.85), proximal small bowel disease (OR 0.92), an increased Harvey-Bradshaw Index (OR 0.99) or increased faecal calprotectin (OR 0.997) were less likely to successfully increase their dose interval. The model had fair discriminative ability (AUC = 0.63) and net benefit analysis showed that the model could be used to select patients who could increase their dose interval. CONCLUSION The final prediction model seems promising to select patients who could successfully increase their ADA dose interval. The model should be validated externally before it may be applied in clinical practice. CLINICAL TRIAL REGISTRATION NUMBER ClinicalTrials.gov, number NCT03172377.
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Affiliation(s)
- Reinier C A van Linschoten
- Department of Gastroenterology and Hepatology, Erasmus MC, Rotterdam, The Netherlands
- Department of Gastroenterology and Hepatology, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - Fenna M Jansen
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Renske W M Pauwels
- Department of Gastroenterology and Hepatology, Erasmus MC, Rotterdam, The Netherlands
| | - Lisa J T Smits
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Femke Atsma
- Scientific Center for Quality of Healthcare, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Wietske Kievit
- Department for Health Evidence, Radboud University Medical Center, Radboud Institute for Health Science, Nijmegen, The Netherlands
| | - Dirk J de Jong
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Annemarie C de Vries
- Department of Gastroenterology and Hepatology, Erasmus MC, Rotterdam, The Netherlands
| | - Paul J Boekema
- Department of Gastroenterology and Hepatology, Maxima Medical Center, Eindhoven, The Netherlands
| | - Rachel L West
- Department of Gastroenterology and Hepatology, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | | | - Ingrid A M Gisbertz
- Department of Gastroenterology and Hepatology, Bernhoven Hospital, Uden, The Netherlands
| | - Frank H J Wolfhagen
- Department of Gastroenterology and Hepatology, Albert Schweitzer Hospital, Dordrecht, The Netherlands
| | - Tessa E H Römkens
- Department of Gastroenterology and Hepatology, Jeroen Bosch Hospital, 'S-Hertogenbosch, The Netherlands
| | - Maurice W M D Lutgens
- Department of Gastroenterology and Hepatology, Elisabeth Twee Steden Ziekenhuis, Tilburg, The Netherlands
| | - Adriaan A van Bodegraven
- Department of Gastroenterology, Geriatrics, Internal and Intensive Care Medicine (Co-MIK), Zuyderland Medical Center, Sittard-Geleen/Heerlen, The Netherlands
| | - Bas Oldenburg
- Department of Gastroenterology and Hepatology, UMC Utrecht, Utrecht, The Netherlands
| | - Marieke J Pierik
- Department of Gastroenterology and Hepatology, Maastricht University Medical Center +, Maastricht, The Netherlands
| | - Maurice G V M Russel
- Department of Gastroenterology and Hepatology, Medisch Spectrum Twente, Twente, The Netherlands
| | - Nanne K de Boer
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism Research Institute, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | | | - Pieter C J Ter Borg
- Department of Gastroenterology and Hepatology, Ikazia Hospital, Rotterdam, The Netherlands
| | | | - Jeroen M Jansen
- Department of Gastroenterology and Hepatology, OLVG, Amsterdam, The Netherlands
| | - Sita V Jansen
- Department of Gastroenterology and Hepatology, Reinier de Graaf Gasthuis, Delft, The Netherlands
| | - Adrianus C I T L Tan
- Department of Gastroenterology and Hepatology, CWZ Hospital, Nijmegen, The Netherlands
| | | | - Frank Hoentjen
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands.
- Division of Gastroenterology, Department of Medicine, University of Alberta, 2-20A Zeidler Ledcor Centre, 8540-112 Street NW, Edmonton, AB, T6G 2P8, Canada.
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Gisbert JP, Chaparro M. De-escalation of Biologic Treatment in Inflammatory Bowel Disease: A Comprehensive Review. J Crohns Colitis 2024; 18:642-658. [PMID: 37943286 DOI: 10.1093/ecco-jcc/jjad181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Indexed: 11/10/2023]
Abstract
INTRODUCTION Biologic therapy is an effective treatment for inflammatory bowel disease [IBD]. However due to cost and safety concerns, dose de-escalation strategies after achieving remission have been suggested. AIM To critically review available data on dose de-escalation of biologics [or other advanced therapies] in IBD. We will focus on studies evaluating de-escalation to standard dosing in patients initially optimised, and also on studies assessing de-escalation from standard dosing. METHODS A systematic bibliographic search was performed. RESULTS The mean frequency of de-escalation after previous dose intensification [12 studies, 1,474 patients] was 34%. The corresponding frequency of de-escalation from standard dosing [five studies, 3,842 patients] was 4.2%. The relapse rate of IBD following anti-tumour necrosis factor [TNF] de-escalation to standard dosing in patients initially dose-escalated [10 studies, 301 patients] was 30%. The corresponding relapse rate following anti-TNF de-escalation from standard dosing [nine studies, 494 patients] was 38%. The risk of relapse was lower for patients in clinical, biologic, and endoscopic/radiological remission at the time of de-escalation. A role of anti-TNF therapeutic drug monitoring in the decision to dose de-escalate has been demonstrated. In patients relapsing after de-escalation, re-escalation is generally effective. De-escalation is not consistently associated with a better safety profile. The cost-effectiveness of the de-escalation strategy remains uncertain. Finally, there is not enough evidence to recommend dose de-escalation of biologics different from anti-TNFs or small molecules. CONCLUSIONS Any consideration for de-escalation of biologic therapy in IBD must be tailored, taking into account the risks and consequences of a flare and patients' preferences.
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Affiliation(s)
- Javier P Gisbert
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa [IIS-Princesa], Universidad Autónoma de Madrid [UAM], Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas [CIBEREHD], Madrid, Spain
| | - María Chaparro
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa [IIS-Princesa], Universidad Autónoma de Madrid [UAM], Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas [CIBEREHD], Madrid, Spain
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Schmidt C, Stallmach A, Sturm A, Bachmann O, Helwig U, Koletzko S, Lynen P, Schnoy E, Dignass A, Kucharzik T, Blumenstein I. [Update: Addendum to S3-Guidelines Crohn disease and ulcerative colitis: Management of Patients with Inflammatory Bowel Disease with regard to COVID-19 (version 2.0)]. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2024; 62:517-534. [PMID: 38599579 DOI: 10.1055/a-2255-7184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Affiliation(s)
- Carsten Schmidt
- Medizinischen Klinik II (Gastroenterologie, Hepatologie, Endokrinologie, Diabetologie und Infektiologie), Klinikum Fulda, Universitätsmedizin Marburg-Campus Fulda, Fulda
- Medizinische Fakultät der Friedrich-Schiller-Universität, Jena
| | - Andreas Stallmach
- Klinik für Innere Medizin IV (Gastroenterologie, Infektiologie und Hepatologie), Universitätsklinikum Jena, Jena
| | - Andreas Sturm
- Klinik für Innere Medizin, Schwerpunkt Gastroenterologie, DRK Kliniken Berlin | Westend, Berlin
| | - Oliver Bachmann
- Klinik für Innere Medizin 1, Siloah St. Trudpert Klinikum, Pforzheim
| | - Ulf Helwig
- Internistische Praxengemeinschaft Oldenburg, Oldenburg
| | - Sibylle Koletzko
- Ehem. Kinderklinik und Kinderpoliklinik im Dr. von Hauner Kinderspital, LMU Klinikum der Universität München, München
| | - Petra Lynen
- Deutsche Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten, Berlin
| | - Elisabeth Schnoy
- III. Medizinische Klinik, Universitätsklinikum Augsburg, Augsburg
| | - Axel Dignass
- Medizinischen Klinik I, Agaplesion Markus Krankenhaus, Frankfurt
| | - Torsten Kucharzik
- Klinik für Innere Medizin & Gastroenterologie, Klinikum Lüneburg, Lüneburg
| | - Irina Blumenstein
- Goethe-Universität Frankfurt, Universitätsklinikum, Medizinische Klinik 1, Frankfurt am Main
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Roshanov PS, Khanna R. The Clinical Interpretation of Noninferiority Trials. Inflamm Bowel Dis 2023:izad314. [PMID: 38159079 DOI: 10.1093/ibd/izad314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Indexed: 01/03/2024]
Abstract
Noninferiority trials are designed to demonstrate that a new treatment is not unacceptably worse than a standard treatment, considering an allowable difference termed the noninferiority margin. We highlight that selection of noninferiority margins at the time of study design can be biased toward wider margins that favor noninferiority claims. We discuss a clinically oriented approach to interpretation of results with a focus on confidence intervals and recommend that readers base their judgments regarding noninferiority on margins reflecting patient values and preferences rather than those set by investigators. We provide examples from trials in inflammatory bowel diseases.
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Affiliation(s)
- Pavel S Roshanov
- Department of Medicine, Division of Nephrology, Western University, London, ON, Canada
- Department of Epidemiology and Biostatistics, Western University, London, ON, Canada
- Lawson Health Research Institute, London, ON, Canada
- Population Health Research Institute, Hamilton, ON, Canada
| | - Reena Khanna
- Department of Epidemiology and Biostatistics, Western University, London, ON, Canada
- Lawson Health Research Institute, London, ON, Canada
- Department of Medicine, Division of Gastroenterology, Western University, London, ON, Canada
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Jansen FM, van Linschoten RCA, Kievit W, Smits LJT, Pauwels RWM, de Jong DJ, de Vries AC, Boekema PJ, West RL, Bodelier AGL, Gisbertz IAM, Wolfhagen FHJ, Römkens TEH, Lutgens MWMD, van Bodegraven AA, Oldenburg B, Pierik MJ, Russel MGVM, de Boer NK, Mallant-Hent RC, ter Borg PCJ, van der Meulen-de Jong AE, Jansen JM, Jansen SV, Tan ACITL, Hoentjen F, van der Woude CJ. Cost-Effectiveness Analysis of Increased Adalimumab Dose Intervals in Crohn's Disease Patients in Stable Remission: The Randomized Controlled LADI Trial. J Crohns Colitis 2023; 17:1771-1780. [PMID: 37310877 PMCID: PMC10673815 DOI: 10.1093/ecco-jcc/jjad101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/30/2023] [Accepted: 06/10/2023] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND AIMS We aimed to assess cost-effectiveness of increasing adalimumab dose intervals compared to the conventional dosing interval in patients with Crohn's disease [CD] in stable clinical and biochemical remission. DESIGN We conducted a pragmatic, open-label, randomized controlled non-inferiority trial, comparing increased adalimumab intervals with the 2-weekly interval in adult CD patients in clinical remission. Quality of life was measured with the EQ-5D-5L. Costs were measured from a societal perspective. Results are shown as differences and incremental net monetary benefit [iNMB] at relevant willingness to accept [WTA] levels. RESULTS We randomized 174 patients to the intervention [n = 113] and control [n = 61] groups. No difference was found in utility (difference: -0.017, 95% confidence interval [-0.044; 0.004]) and total costs (-€943, [-€2226; €1367]) over the 48-week study period between the two groups. Medication costs per patient were lower (-€2545, [-€2780; -€2192]) in the intervention group, but non-medication healthcare (+€474, [+€149; +€952]) and patient costs (+€365 [+€92; €1058]) were higher. Cost-utility analysis showed that the iNMB was €594 [-€2099; €2050], €69 [-€2908; €1965] and -€455 [-€4,096; €1984] at WTA levels of €20 000, €50 000 and €80 000, respectively. Increasing adalimumab dose intervals was more likely to be cost-effective at WTA levels below €53 960 per quality-adjusted life year. Above €53 960 continuing the conventional dose interval was more likely to be cost-effective. CONCLUSION When the loss of a quality-adjusted life year is valued at less than €53 960, increasing the adalimumab dose interval is a cost-effective strategy in CD patients in stable clinical and biochemical remission. CLINICAL TRIAL REGISTRATION NUMBER ClinicalTrials.gov, number NCT03172377.
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Affiliation(s)
- Fenna M Jansen
- Radboud University Medical Center, Department of Gastroenterology and Hepatology, Nijmegen, The Netherlands
| | - Reinier C A van Linschoten
- Erasmus MC, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands
- Franciscus Gasthuis & Vlietland, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands
| | - Wietske Kievit
- Radboud University Medical Center, Radboud Institute for Health Science, Department for Health Evidence, Nijmegen, The Netherlands
| | - Lisa J T Smits
- Radboud University Medical Center, Department of Gastroenterology and Hepatology, Nijmegen, The Netherlands
| | - Renske W M Pauwels
- Erasmus MC, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands
| | - Dirk J de Jong
- Radboud University Medical Center, Department of Gastroenterology and Hepatology, Nijmegen, The Netherlands
| | - Annemarie C de Vries
- Erasmus MC, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands
| | - Paul J Boekema
- Maxima Medical Center, Department of Gastroenterology and Hepatology, Eindhoven, The Netherlands
| | - Rachel L West
- Franciscus Gasthuis & Vlietland, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands
| | | | - Ingrid A M Gisbertz
- Bernhoven Hospital, Department of Gastroenterology and Hepatology, Uden, The Netherlands
| | - Frank H J Wolfhagen
- Albert Schweitzer Hospital, Department of Gastroenterology and Hepatology, Dordrecht, The Netherlands
| | - Tessa E H Römkens
- Jeroen Bosch Hospital, Department of Gastroenterology and Hepatology, ‘s-Hertogenbosch, The Netherlands
| | - Maurice W M D Lutgens
- Elisabeth Tweesteden Ziekenhuis, Department of Gastroenterology and Hepatology, Tilburg, The Netherlands
| | - Adriaan A van Bodegraven
- Zuyderland Medical Center, Department of Gastroenterology, Geriatrics, Internal and Intensive Care Medicine (Co-MIK), Sittard-Geleen/Heerlen, The Netherlands
| | - Bas Oldenburg
- University Medical Center Utrecht, Department of Gastroenterology and Hepatology, Utrecht, The Netherlands
| | - Marieke J Pierik
- Maastricht University Medical Center+, Department of Gastroenterology and Hepatology, Maastricht, The Netherlands
| | - Maurice G V M Russel
- Medisch Spectrum Twente, Department of Gastroenterology and Hepatology, Twente, The Netherlands
| | - Nanne K de Boer
- Amsterdam University Medical Center, Vrije University Amsterdam, Department of Gastroenterology and Hepatology, AGEM Research Institute, Amsterdam, The Netherlands
| | | | - Pieter C J ter Borg
- Ikazia Hospital, Department of Gastroenterology and Hepatology, Rotterdam, The Netherlands
| | | | - Jeroen M Jansen
- OLVG, Department of Gastroenterology and Hepatology, Amsterdam, The Netherlands
| | - Sita V Jansen
- Reinier de Graaf Gasthuis, Department of Gastroenterology and Hepatology, Delft, The Netherlands
| | - Adrianus C I T L Tan
- Canisius Wilhelmina Hospital, Department of Gastroenterology and Hepatology, Nijmegen, The Netherlands
| | - Frank Hoentjen
- Radboud University Medical Center, Department of Gastroenterology and Hepatology, Nijmegen, The Netherlands
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Canada
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Burisch J, Zhao M, Odes S, De Cruz P, Vermeire S, Bernstein CN, Kaplan GG, Duricova D, Greenberg D, Melberg HO, Watanabe M, Ahn HS, Targownik L, Pittet VEH, Annese V, Park KT, Katsanos KH, Høivik ML, Krznaric Z, Chaparro M, Loftus EV, Lakatos PL, Gisbert JP, Bemelman W, Moum B, Gearry RB, Kappelman MD, Hart A, Pierik MJ, Andrews JM, Ng SC, D'Inca R, Munkholm P. The cost of inflammatory bowel disease in high-income settings: a Lancet Gastroenterology & Hepatology Commission. Lancet Gastroenterol Hepatol 2023; 8:458-492. [PMID: 36871566 DOI: 10.1016/s2468-1253(23)00003-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 03/06/2023]
Abstract
The cost of caring for patients with inflammatory bowel disease (IBD) continues to increase worldwide. The cause is not only a steady increase in the prevalence of Crohn's disease and ulcerative colitis in both developed and newly industrialised countries, but also the chronic nature of the diseases, the need for long-term, often expensive treatments, the use of more intensive disease monitoring strategies, and the effect of the diseases on economic productivity. This Commission draws together a wide range of expertise to discuss the current costs of IBD care, the drivers of increasing costs, and how to deliver affordable care for IBD in the future. The key conclusions are that (1) increases in health-care costs must be evaluated against improved disease management and reductions in indirect costs, and (2) that overarching systems for data interoperability, registries, and big data approaches must be established for continuous assessment of effectiveness, costs, and the cost-effectiveness of care. International collaborations should be sought out to evaluate novel models of care (eg, value-based health care, including integrated health care, and participatory health-care models), as well as to improve the education and training of clinicians, patients, and policy makers.
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Affiliation(s)
- Johan Burisch
- Gastro Unit, Medical Division, Copenhagen University Hospital-Amager and Hvidovre, Hvidovre, Denmark; Copenhagen Center for Inflammatory Bowel Disease in Children, Adolescents and Adults, Copenhagen University Hospital-Amager and Hvidovre, Hvidovre, Denmark.
| | - Mirabella Zhao
- Gastro Unit, Medical Division, Copenhagen University Hospital-Amager and Hvidovre, Hvidovre, Denmark; Copenhagen Center for Inflammatory Bowel Disease in Children, Adolescents and Adults, Copenhagen University Hospital-Amager and Hvidovre, Hvidovre, Denmark
| | - Selwyn Odes
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Peter De Cruz
- Department of Gastroenterology, Austin Health, Melbourne, VIC, Australia; Department of Medicine, Austin Academic Centre, The University of Melbourne, Melbourne, VIC, Australia
| | - Severine Vermeire
- Department of Gastroenterology and Hepatology, University Hospital Leuven, Leuven, Belgium; Faculty of Medicine, KU Leuven University, Leuven, Belgium
| | - Charles N Bernstein
- IBD Clinical and Research Centre, University of Manitoba, Winnipeg, MB, Canada; Department of Internal Medicine, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Gilaad G Kaplan
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - Dana Duricova
- IBD Clinical and Research Centre for IBD, ISCARE, Prague, Czech Republic; Department of Pharmacology, Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Dan Greenberg
- Department of Health Policy and Management, School of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Guilford Glazer Faculty of Business and Management, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Hans O Melberg
- Department of Community Medicine, University of Tromsø-The Arctic University of Norway, Tromsø, Norway; Department of Gastroenterology, Oslo University Hospital, Oslo, Norway
| | - Mamoru Watanabe
- Advanced Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea
| | - Laura Targownik
- Division of Gastroenterology and Hepatology, Department of Medicine, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - Valérie E H Pittet
- Department of Epidemiology and Health Systems, Center for Primary Care and Public Health, University of Lausanne, Lausanne, Switzerland
| | - Vito Annese
- Division of Gastroenterology, Department of Internal Medicine, Fakeeh University Hospital, Dubai, United Arab Emirates
| | - K T Park
- Stanford Health Care, Packard Health Alliance, Alameda, CA, USA; Genentech (Roche Group), South San Francisco, CA, USA
| | - Konstantinos H Katsanos
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Ioannina School of Health Sciences, Ioannina, Greece
| | - Marte L Høivik
- Department of Gastroenterology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Zeljko Krznaric
- Department of Gastroenterology, Hepatology and Nutrition, University Hospital Zagreb, Zagreb, Croatia
| | - María Chaparro
- Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - Edward V Loftus
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Peter L Lakatos
- Division of Gastroenterology, McGill University Montreal, QC, Canada; Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
| | - Javier P Gisbert
- Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - Willem Bemelman
- Department of Surgery, Amsterdam University Medical Centers, Amsterdam, Netherlands
| | - Bjorn Moum
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Richard B Gearry
- Department of Medicine, University of Otago, Christchurch, New Zealand
| | - Michael D Kappelman
- Division of Pediatric Gastroenterology, Department of Pediatrics and Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ailsa Hart
- IBD Unit, St Mark's Hospital, Middlesex, UK
| | - Marieke J Pierik
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Jane M Andrews
- IBD Service, Department of Gastroenterology and Hepatology, Royal Adelaide Hospital, Adelaide, SA, Australia; Faculty of Health Sciences, University of Adelaide, Adelaide, SA, Australia
| | - Siew C Ng
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Renata D'Inca
- Department of Surgical, Oncological and Gastroenterological Sciences, University of Padua, Padua, Italy
| | - Pia Munkholm
- Department of Gastroenterology, Copenhagen University Hospital-North Zealand, Hillerød, Denmark
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