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Pasternak B. Medical management of pediatric inflammatory bowel disease. Semin Pediatr Surg 2024; 33:151398. [PMID: 38582057 DOI: 10.1016/j.sempedsurg.2024.151398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2024]
Abstract
Management of inflammatory bowel disease, both Crohn's disease (CD) and ulcerative colitis (UC), has seen a seismic shift over the past decade. Over the past five years, there has been the introduction of many new therapies with differing mechanisms of action and a goal of achieving mucosal healing, as well as clinical and biochemical remission (1,2). In addition, management is aimed at restoring normal growth and normalizing quality of life. The ultimate goal is to individualize medical management and determine the right drug for the right patient by identifying which inflammatory pathway is predominant and avoiding unwarranted lack of efficacy or side effects through biomarkers and risk prognostication. Patient's age, location of disease, behavior (inflammatory vs. penetrating/structuring), severity and growth delay all play into deciding on the best treatment approach. Ultimately, early intervention is key in preventing complications. The therapeutic approaches to management can be broken down to nutritional therapy, biologic agents, immunomodulators (including corticosteroids), aminosalicylates and antibiotics. There are numerous other therapies, such as small molecule agents recently approved in adults, which are garnering a great deal of interest.
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Affiliation(s)
- Brad Pasternak
- Division of Pediatric Gastroenterology, Department of Pediatrics, Phoenix Children's Hospital, Phoenix, Arizona, USA.
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2
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Minar PP, Colman RJ, Zhang N, Mizuno T, Vinks AA. Precise infliximab exposure and pharmacodynamic control to achieve deep remission in paediatric Crohn's disease (REMODEL-CD): study protocol for a multicentre, open-label, pragmatic clinical trial in the USA. BMJ Open 2024; 14:e077193. [PMID: 38531570 DOI: 10.1136/bmjopen-2023-077193] [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] [Indexed: 03/28/2024] Open
Abstract
INTRODUCTION The only biologic therapy currently approved to treat moderate to severe Crohn's disease in children (<18 years old) are those that antagonise tumour necrosis factor-alpha (anti-TNF). Therefore, it is critically important to develop novel strategies that maximise treatment effectiveness in this population. There is growing evidence that rates of sustained corticosteroid-free clinical remission, endoscopic healing and drug durability considerably improve when patients receive early anti-TNF dose optimisations guided by reactive or proactive therapeutic drug monitoring and pharmacodynamic monitoring. In response, our team has developed a personalised and scalable infliximab dosing intervention that starts with dose selection and continues throughout maintenance to optimise drug exposure. We hypothesise that a precision dosing strategy starting from induction and targeting dose-specific pharmacokinetic and pharmacodynamic endpoints throughout therapy will significantly improve outcomes compared with a conventional dosing strategy. METHODS AND ANALYSIS Conduct a clinical trial to assess rates of deep remission between Crohn's disease patients receiving infliximab with precision dosing (n=90) versus conventional care (n=90). Patients (age 6-22 years) will be recruited from 10 medical centres in the USA. Each centre has been selected to provide either precision dosing or conventional care dosing. Precision dosing includes the use of a clinical decision support tool (RoadMAB) from the start of infliximab to achieve specific (personalised) trough concentrations and specific pharmacodynamic targets (at doses 3, 4 and 6). Conventional care includes the use of a modified infliximab starting dose (5 or 7.5 mg/kg based on the pretreatment serum albumin) with a goal to achieve maintenance trough concentrations of 5-10 µg/mL. The primary endpoint is year 1 deep remission defined as a combination of clinical remission (paediatric Crohn's disease activity index<10 (child) or a Crohn's disease activity index<150 (adults)), off prednisone>8 weeks and endoscopic remission (simple endoscopic severity-Crohn's disease≤2). ETHICS AND DISSEMINATION ). The study protocol has been approved by the Cincinnati Children's Hospital Medical Centre Institutional Review Board. Study results will be disseminated in peer-reviewed journals and presented at scientific meetings. TRIAL REGISTRATION NUMBER NCT05660746.
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Affiliation(s)
- Phillip Paul Minar
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
| | - Ruben J Colman
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
| | - Nanhua Zhang
- Division of Biostatistics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Tomoyuki Mizuno
- Department of Pediatrics, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Alexander A Vinks
- Department of Pediatrics, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
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3
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Stallard L, Frost K, Frost N, Scarallo L, Benchimol EI, Walters TD, Church PC, Griffiths AM, Muise AM, Ricciuto A. Body Surface Area-Based Dosing of Infliximab is Superior to Standard Weight-Based Dosing in Children With Very Early Onset Inflammatory Bowel Disease. GASTRO HEP ADVANCES 2023; 3:215-220. [PMID: 39129953 PMCID: PMC11308830 DOI: 10.1016/j.gastha.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 11/09/2023] [Indexed: 08/13/2024]
Abstract
Background and Aims Children with very early onset inflammatory bowel disease (VEO-IBD) are uniquely at risk of inadequate infliximab (IFX) exposure. We studied the association between standard body weight (BW)-based and body surface area (BSA)-based dosing strategies and outcomes. Methods We identified VEO-IBD patients treated with IFX before 9 years at a single center. Patients were separated into those that received a BSA-based dose (200 mg/m2) and standard BW dosing (5 mg/kg). IFX drug levels, dose intensification, time on steroids, and long-term outcomes were compared. Receiver operator characteristic curves determined the optimal BW- and BSA-based dose to achieve a trough ≥10 μg/ml at dose 4 (IFX#4). Results Forty-three children with VEO-IBD were identified. Receiver operator characteristic curves demonstrated optimal BW- and BSA-based doses to achieve IFX trough ≥10 μg/ml at IFX#4 were 7.5 mg/kg and 180mg/m2. Children were classified to standard BW dosing (22/43) and BSA dosing (10/43). IFX#4 trough was significantly higher in those who received BSA dosing (BSA 18.6 μg/ml [interquartile range 10.8-28.1] vs BW 5.1 μg/ml [interquartile range 2.6-10.7], P = .04). BSA dosing was more likely to achieve a target drug level >10 μg/ml at IFX#4 (BSA 70% vs BW 18%, P = .02). BW dosing was associated with a greater likelihood of dose escalation (BW 82% vs BSA 30%, P < .01) and a shorter time to first escalation. BSA dosing was associated with shorter time spent on steroids (P = .02). Conclusion Young children require higher IFX dosing to achieve adequate drug exposure. Our data support the use of a BSA-based dose of 200 mg/m2 or, if a BW-based approach is used, 7.5 mg/kg. BSA dosing allows the use of a consistent dose over the age and weight spectrum.
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Affiliation(s)
- Lorraine Stallard
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
- National Centre for Pediatric Gastroenterology, Children's Health Ireland, Dublin, Ireland
| | - Karen Frost
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Nathaniel Frost
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Luca Scarallo
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
- Gastroenterology and Nutrition Unit, Meyer Children Hospital IRCCS, Florence, Italy
- Department of NEUROFARBA, University of Florence, Florence, Italy
| | - Eric I. Benchimol
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- Child Health Evaluative Sciences, SickKids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Thomas D. Walters
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Peter C. Church
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Anne M. Griffiths
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Aleixo M. Muise
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
- Cell Biology Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Amanda Ricciuto
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
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4
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Levy R, Matar M, Zvuloni M, Shamir R, Assa A. Trough Concentration Response in Infliximab and Adalimumab Treated Children With Inflammatory Bowel Disease Following Treatment Adjustment: A Pharmacokinetic Model. J Pediatr Gastroenterol Nutr 2023; 76:576-581. [PMID: 37083732 DOI: 10.1097/mpg.0000000000003726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
OBJECTIVES In patients with inflammatory bowel diseases (IBD), data on trough concentration (TC) response to adjustments of anti-tumor necrosis factor (TNFα) are scarce. METHODS We included pediatric patients with IBD who were treated with anti-TNFα agents and had sequential monitoring of TC pre- and post-adjustment. Patients with positive anti-drug-antibodies or with concomitant change in immunomodulatory treatment were excluded. RESULTS For the entire cohort (86 patients), median age at diagnosis was 13.2 (interquartile range, 10.7-14.9) years [females, 48%; Crohn disease (CD), 72%]. For infliximab, 58 patients had 201 interval changes and 26 had dose increase. Increase in TC following dose increase could not be predicted due to significant variability (P = 0.9). For every 10% decrease in interval, TC was increased by 1.6 µg/mL or by 57.2% (P = 0.014). Perianal disease was associated with attenuated response. For every 10% increase in interval, TC was decreased by 0.66 µg/mL or by 4.2%. The diagnosis of CD was associated with reduced response to interval increase. For adalimumab, 28 patients had 31 and 12 events of interval decrease or increase, respectively. Interval decrease resulted in increased median TC from 4.5 (3.5-5.3) µg/mL to 8.1 (6.5-10.5) µg/mL (X1.8) while interval increase resulted in TC change from 15.5 (12.8-18.6) µg/mL to 9.7 (6.5-14.6) µg/mL (:1.6) (P < 0.001 for both). Increase in delta TC was associated with younger age, and with absence of perianal disease (P = 0.001). CONCLUSION Changes in TC following treatment adjustment can be almost linearly predicted for adalimumab while response to infliximab adjustment are more variable.
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Affiliation(s)
- Rachel Levy
- From the Department of Pediatrics "A", Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Manar Matar
- The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- The Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Hospital, Petach-Tikva, Israel
| | - Maya Zvuloni
- The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Raanan Shamir
- The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- The Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Hospital, Petach-Tikva, Israel
| | - Amit Assa
- The Institute of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Hospital, Petach-Tikva, Israel
- The Juliet Keidan Institute of Pediatric Gastroenterology, Hepatology and Nutrition, Shaare Zedek Medical Center, The Hebrew University of Jerusalem, Jerusalem, Israel
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Nasab AS, Finkler M, DeLozier S, Sferra TJ, Splawski J, Moses J. Comparison of Short-Term Outcomes for Standard Versus Nonstandard Induction Dosing of Infliximab for Pediatric Inflammatory Bowel Disease. J Pediatr Pharmacol Ther 2022; 27:732-738. [DOI: 10.5863/1551-6776-27.7.732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 01/10/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVE
Recent studies have emphasized the early use of infliximab (IFX) in pediatric patients with inflammatory bowel disease. Standard dosing of 5 mg/kg/dose may not be sufficient to achieve optimal clinical outcomes. The aim of our study was to compare short-term outcomes with standard dosing of IFX to higher, nonstandard dosing of IFX for induction therapy.
METHODS
Retrospective study of 162 pediatric patients receiving either standard (5–6 mg/kg, n = 90) or nonstandard (>6 mg/kg, n = 72) dosing of IFX during induction was performed. Patient demographics, clinical outcomes, and laboratory data were collected. Need for dose escalation during the first 6 months, combination therapy with immunomodulators, and steroid-free progression were investigated.
RESULTS
Clinical remission rates between the 2 groups were significantly different, with patients receiving nonstandard dosing demonstrating higher rates (58% vs 78%; p = 0.012). Use of combination therapy with immunomodulators was significantly different between standard and nonstandard groups (80% vs 48%; p < 0.001). Numeric trend in need for IFX dose escalation in the first 6 months was seen between standard and nonstandard groups (54% vs 39%, respectively; p = 0.087). Post-induction IFX trough concentrations, rates of antibody development, drug discontinuation, and infusion reaction were similar.
CONCLUSIONS
Nonstandard induction dosing of IFX was associated with higher rates of clinical remission, despite similar rates of serum IFX trough concentrations. There was a numeric trend towards the standard group requiring dose escalation within the first 6 months of therapy. Patients given nonstandard dosing may achieve superior clinical outcomes compared with those on standard dosing.
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Affiliation(s)
- Arian S. Nasab
- Department of Pediatrics (ASN), UH–Rainbow Babies and Children's Hospital Cleveland, OH
| | - Michael Finkler
- Division of Pediatric Gastroenterology (MF, TJS, JS, JM), UH–Rainbow Babies and Children's Hospital Cleveland, OH
| | - Sarah DeLozier
- Center for Clinical Research (SD), University Hospitals Cleveland Medical Center, Cleveland, OH
| | - Thomas J. Sferra
- Division of Pediatric Gastroenterology (MF, TJS, JS, JM), UH–Rainbow Babies and Children's Hospital Cleveland, OH
| | - Judy Splawski
- Division of Pediatric Gastroenterology (MF, TJS, JS, JM), UH–Rainbow Babies and Children's Hospital Cleveland, OH
| | - Jonathan Moses
- Division of Pediatric Gastroenterology (MF, TJS, JS, JM), UH–Rainbow Babies and Children's Hospital Cleveland, OH
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Nguyen NH, Solitano V, Vuyyuru SK, MacDonald JK, Syversen SW, Jørgensen KK, Crowley E, Ma C, Jairath V, Singh S. Proactive Therapeutic Drug Monitoring Versus Conventional Management for Inflammatory Bowel Diseases: A Systematic Review and Meta-Analysis. Gastroenterology 2022; 163:937-949.e2. [PMID: 35753383 DOI: 10.1053/j.gastro.2022.06.052] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/16/2022] [Accepted: 06/19/2022] [Indexed: 12/02/2022]
Abstract
BACKGROUND & AIMS Proactive therapeutic drug monitoring (TDM) has been proposed to improve outcomes in patients with inflammatory bowel disease (IBD) treated with tumor necrosis factor (TNF)α antagonists. We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) comparing proactive TDM with conventional management in patients with IBD. METHODS We identified RCTs in patients with IBD treated with TNFα antagonists comparing proactive TDM (routine assessments of trough concentration with dose adjustments to maintain predetermined trough concentration, regardless of disease activity) with conventional management (clinically driven dose adjustments). The primary outcome was failure to maintain clinical remission. Certainty of evidence was appraised using Grading of Recommendations, Assessment, Development and Evaluations. RESULTS On meta-analysis of 9 RCTs (8 RCTs in adults, and focusing on maintenance phase), there was no significant difference in the risk of failing to maintain clinical remission in patients who underwent proactive TDM (267/709; 38%) vs conventional management (292/696; 42%) (relative risk [RR], 0.96; 95% confidence interval [CI], 0.81-1.13) with moderate heterogeneity (inconsistency index = 36%) (Grading of Recommendations, Assessment, Development and Evaluations; low certainty evidence), with no differences in patients with Crohn's disease (RR, 0.87 ; 95% CI, 0.66-1.15) and ulcerative colitis (RR, 0.88; 95% CI, 0.72-1.07). Disease duration, concomitant immunomodulators, disease activity at baseline, and optimization of therapy before randomization did not modify this association. No differences were observed in risk of developing antidrug antibodies or serious adverse events. Patients in the proactive TDM arm were more likely to undergo dose escalation (RR, 1.56; 95% CI, 1.25-1.94). CONCLUSIONS Routine proactive TDM to target biologic concentration to specific thresholds, regardless of disease activity, did not offer clinical benefit in patients with IBD treated with TNFα antagonists in RCTs conducted to date. We cannot exclude the possibility of benefit in disease subtypes and phases of therapy (induction) not represented in these RCT populations.
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Affiliation(s)
- Nghia H Nguyen
- Division of Gastroenterology, University of California San Diego, La Jolla, California
| | - Virginia Solitano
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Sudheer K Vuyyuru
- Division of Gastroenterology, Department of Medicine, Western University, London, Ontario, Canada
| | | | - Silje W Syversen
- Division of Rheumatology and Research, Diakonhjemmet Hospital, Oslo, Norway
| | | | - Eileen Crowley
- Alimentiv Inc., London, Ontario, Canada; Division of Pediatric Gastroenterology, Western University, Children's Hospital, London Health Sciences Centre, London, Ontario, Canada
| | - Christopher Ma
- Alimentiv Inc., London, Ontario, Canada; Division of Gastroenterology and Hepatology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Vipul Jairath
- Division of Gastroenterology, Department of Medicine, Western University, London, Ontario, Canada; Alimentiv Inc., London, Ontario, Canada; Department of Epidemiology & Biostatistics, Western University, London, Ontario, Canada
| | - Siddharth Singh
- Division of Gastroenterology, University of California San Diego, La Jolla, California; Division of Biomedical Informatics, University of California San Diego, La Jolla, California.
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Lawrence LS, Heider A, Singer AAM, Neef HC, Adler J. Granulomas in Diagnostic Biopsies Associated With High Risk of Crohn's Complications-But May Be Preventable. Inflamm Bowel Dis 2022; 28:523-530. [PMID: 33999198 DOI: 10.1093/ibd/izab109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Granulomatous intestinal inflammation may be associated with aggressive Crohn's disease (CD) behavior. However, this has not been confirmed, and it is unknown if associated disease complications are preventable. METHODS This is a retrospective cohort of patients younger than 21 years at CD diagnosis (November 1, 2005 to November 11, 2015). Clinical information was abstracted, including dates of starting medications and the timing of perianal fistula or stricture development, if any. Diagnostic pathology reports were reviewed, and a subset of biopsy slides were evaluated by a blinded pathologist. Patients were excluded if perianal fistula or stricture developed within 30 days after CD diagnosis. Medications were included in analyses only if started >90 days before development of perianal fistula or stricture. RESULTS In total, 198 patients were included. Half (54%) had granulomas at diagnosis. Granulomas were associated with a greater than 3-fold increased risk of perianal fistula (hazard ration [HR] = 3.24; 95% confidence interval CI], 1.40-7.48). Immunomodulator and anti-tumor necrosis factor-α (anti-TNF) therapy were associated with 90% (HR, = 0.10; 95% CI, 0.03-0.42) and 98% (HR, = 0.02; 95% CI, 0.01-0.10) reduced risk of perianal fistula, respectively. Patients with granulomatous inflammation preferentially responded to anti-TNF therapy with reduced risk of perianal fistula. The presence of granulomas was not associated with risk of stricture. Immunomodulator and anti-TNF therapy were associated with 96% (HR, = 0.04; 95% CI, 0.01-0.22) and 94% (HR, = 0.06; 95% CI, 0.02-0.20) reduced risk of stricture, respectively. CONCLUSIONS Granulomas are associated with increased risk of perianal fistula but not stricture. Steroid sparing therapies seem to reduce the risk of both perianal fistula and stricture. For those with granulomas, anti-TNF-α therapy greatly reduced the risk of perianal fistula development, whereas immunomodulators did not.
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Affiliation(s)
- Lindsey S Lawrence
- Division of Pediatric Gastroenterology, C.S. Mott Children's Hospital, Michigan Medicine, Ann Arbor, Michigan, United States
| | - Amer Heider
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, United States
| | - Andrew A M Singer
- Division of Pediatric Gastroenterology, C.S. Mott Children's Hospital, Michigan Medicine, Ann Arbor, Michigan, United States
| | - Haley C Neef
- Division of Pediatric Gastroenterology, C.S. Mott Children's Hospital, Michigan Medicine, Ann Arbor, Michigan, United States
| | - Jeremy Adler
- Division of Pediatric Gastroenterology, C.S. Mott Children's Hospital, Michigan Medicine, Ann Arbor, Michigan, United States.,Susan B. Meister Child Health Evaluation and Research Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, United States
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8
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Cheli S, Cozzi V, Cattaneo D, Norsa L, De Giacomo C, Clementi E, Moretti C. Fast clearance of anti-TNFα agents unrelated to antidrug antibodies: a case report. Eur J Clin Pharmacol 2022; 78:891-893. [PMID: 35181819 DOI: 10.1007/s00228-022-03294-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/14/2022] [Indexed: 01/05/2023]
Affiliation(s)
- Stefania Cheli
- Unit of Clinical Pharmacology, L. Sacco University Hospital, Milan, Italy. .,Unit of Clinical Pharmacology, ASST Fatebenefratelli, Sacco University Hospital, Milan, Italy.
| | - Valeria Cozzi
- Unit of Clinical Pharmacology, L. Sacco University Hospital, Milan, Italy
| | - Dario Cattaneo
- Unit of Clinical Pharmacology, L. Sacco University Hospital, Milan, Italy
| | - Lorenzo Norsa
- Pediatric Hepatology, Gastroenterology and Transplantation Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
| | | | - Emilio Clementi
- Unit of Clinical Pharmacology, Dept Biomedical and Clinical Sciences, L. Sacco University Hospital, University of Milan, Milan, Italy.,Scientific Institute IRCCS Eugenio Medea, Bosisio Parini, Lecco, Italy
| | - Chiara Moretti
- Pediatrics Division, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
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9
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Lehtomäki J, Nikkonen A, Merras-Salmio L, Hiltunen P, Kolho KL. Therapy outcome related to adalimumab trough levels in pediatric patients with inflammatory bowel disease. Scand J Gastroenterol 2022; 57:31-36. [PMID: 34546843 DOI: 10.1080/00365521.2021.1977843] [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] [Indexed: 02/04/2023]
Abstract
OBJECTIVES We evaluated the relationship between serum concentration and efficacy of adalimumab (ADA), an anti-tumor necrosis factor-alpha agent, in pediatric patients with inflammatory bowel disease (PIBD). MATERIALS AND METHODS This retrospective cross-sectional study traced 75 patients with PIBD (Crohn's disease, n = 57) treated with ADA at two tertiary centers in Finland in 2012-2018. Drug levels and drug antibody titers were chart-reviewed, and the treatment continuation rate of ADA therapy was evaluated. We also assessed the impact of trough levels in the first 3 months on the continuation of ADA within one year of therapy. RESULTS ADA was introduced at a median age of 13.4 years, and the median disease duration was 2.7 years. During the first year, 22 patients (29%) discontinued ADA due to either loss of response (20%, n = 15) or anti-drug antibody formation (5.3%, n = 4). Regarding trough levels in the first 3 months, 9/16 patients (56%) with trough levels <5 mg/L and 12/20 (60%) with trough levels <7.5 mg/L at 3 months discontinued the therapy by the end of the first year. In comparison, only 8/32 patients (25%) with trough levels >7.5 mg/L at 3 months discontinued treatment during the first year (p = .005). At the last follow-up (median 1.5 years), 52% of the 75 patients were on maintenance therapy and had a median trough level of 8.8 mg/L. CONCLUSION Higher trough levels in the first 3 months of adalimumab treatment are associated with lower rates of discontinuation due to loss of response during the first year.
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Affiliation(s)
- Johanna Lehtomäki
- Department of Paediatrics, Tampere University Hospital, Tampere, Finland
| | - Anne Nikkonen
- University of Helsinki, Children's Hospital, Helsinki, Finland
| | | | - Pauliina Hiltunen
- Department of Paediatrics, Tampere University Hospital, Tampere, Finland
| | - Kaija-Leena Kolho
- University of Helsinki, Children's Hospital, Helsinki, Finland.,Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
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10
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Schräpel C, Kovar L, Selzer D, Hofmann U, Tran F, Reinisch W, Schwab M, Lehr T. External Model Performance Evaluation of Twelve Infliximab Population Pharmacokinetic Models in Patients with Inflammatory Bowel Disease. Pharmaceutics 2021; 13:pharmaceutics13091368. [PMID: 34575443 PMCID: PMC8468301 DOI: 10.3390/pharmaceutics13091368] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 01/12/2023] Open
Abstract
Infliximab is approved for treatment of various chronic inflammatory diseases including inflammatory bowel disease (IBD). However, high variability in infliximab trough levels has been associated with diverse response rates. Model-informed precision dosing (MIPD) with population pharmacokinetic models could help to individualize infliximab dosing regimens and improve therapy. The aim of this study was to evaluate the predictive performance of published infliximab population pharmacokinetic models for IBD patients with an external data set. The data set consisted of 105 IBD patients with 336 infliximab concentrations. Literature review identified 12 published models eligible for external evaluation. Model performance was evaluated with goodness-of-fit plots, prediction- and variability-corrected visual predictive checks (pvcVPCs) and quantitative measures. For anti-drug antibody (ADA)-negative patients, model accuracy decreased for predictions > 6 months, while bias did not increase. In general, predictions for patients developing ADA were less accurate for all models investigated. Two models with the highest classification accuracy identified necessary dose escalations (for trough concentrations < 5 µg/mL) in 88% of cases. In summary, population pharmacokinetic modeling can be used to individualize infliximab dosing and thereby help to prevent infliximab trough concentrations dropping below the target trough concentration. However, predictions of infliximab concentrations for patients developing ADA remain challenging.
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Affiliation(s)
- Christina Schräpel
- Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany; (C.S.); (L.K.); (D.S.)
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, University of Tübingen, 70376 Stuttgart, Germany; (U.H.); (M.S.)
| | - Lukas Kovar
- Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany; (C.S.); (L.K.); (D.S.)
| | - Dominik Selzer
- Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany; (C.S.); (L.K.); (D.S.)
| | - Ute Hofmann
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, University of Tübingen, 70376 Stuttgart, Germany; (U.H.); (M.S.)
| | - Florian Tran
- Institute of Clinical Molecular Biology, Kiel University and University Medical Center Schleswig-Holstein, 24105 Kiel, Germany;
- Department of Internal Medicine I, University Medical Center Schleswig-Holstein, 24105 Kiel, Germany
| | - Walter Reinisch
- Department of Internal Medicine III, Medical University of Vienna, 1090 Vienna, Austria;
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, University of Tübingen, 70376 Stuttgart, Germany; (U.H.); (M.S.)
- Departments of Clinical Pharmacology, Pharmacy and Biochemistry, University of Tübingen, 72076 Tübingen, Germany
| | - Thorsten Lehr
- Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany; (C.S.); (L.K.); (D.S.)
- Correspondence: ; Tel.: +49-681-302-70255
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11
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Malik PRV, Temrikar ZH, Chelle P, Edginton AN, Meibohm B. Pediatric Dose Selection for Therapeutic Proteins. J Clin Pharmacol 2021; 61 Suppl 1:S193-S206. [PMID: 34185910 DOI: 10.1002/jcph.1829] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 01/26/2021] [Indexed: 12/12/2022]
Abstract
In selecting optimal dosing regimens in support of the clinical use of monoclonal antibodies and other therapeutic proteins in pediatric indications, the unique pharmacokinetic properties of this class of biologics, as well as the underlying physiologic and pathophysiologic processes and their modulation by childhood growth and development, needs to be appreciated. During drug development, first-in-pediatric dose selection is a capstone event in the pediatric investigation plan that relies heavily on extrapolation of pharmacokinetic and pharmacodynamic data from adult to pediatric populations. It is facilitated by combinations of pharmacometric approaches, including allometry, physiologically based pharmacokinetic modeling, and population pharmacokinetic analyses, although data on reliability and qualification of some of these tools in the context of therapeutic proteins are still limited but emerging. Presented data suggest nonlinear relationships between body weight and both clearance and volume of distribution for therapeutic proteins in pediatric populations, with allometric exponents of 0.75 and 0.8, respectively. For newborns and infants (<1 year), even higher nonlinearity seems to occur. Translation of the quantitative characterization of the pediatric pharmacokinetics of therapeutic proteins into dosing regimens for the drug label requires compromising between precision dosing and clinical practicability, with tiered dosing algorithms based on size or age strata being the currently most frequently applied methodology.
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Affiliation(s)
- Paul R V Malik
- School of Pharmacy, University of Waterloo, Waterloo, Ontario, Canada
| | - Zaid H Temrikar
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Pierre Chelle
- School of Pharmacy, University of Waterloo, Waterloo, Ontario, Canada
| | - Andrea N Edginton
- School of Pharmacy, University of Waterloo, Waterloo, Ontario, Canada
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Tennessee Health Science Center, Memphis, Tennessee, USA
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12
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van Rheenen PF, Aloi M, Assa A, Bronsky J, Escher JC, Fagerberg UL, Gasparetto M, Gerasimidis K, Griffiths A, Henderson P, Koletzko S, Kolho KL, Levine A, van Limbergen J, Martin de Carpi FJ, Navas-López VM, Oliva S, de Ridder L, Russell RK, Shouval D, Spinelli A, Turner D, Wilson D, Wine E, Ruemmele FM. The Medical Management of Paediatric Crohn's Disease: an ECCO-ESPGHAN Guideline Update. J Crohns Colitis 2020; 15:jjaa161. [PMID: 33026087 DOI: 10.1093/ecco-jcc/jjaa161] [Citation(s) in RCA: 243] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE We aimed to provide an evidence-supported update of the ECCO-ESPGHAN guideline on the medical management of paediatric Crohn's disease [CD]. METHODS We formed 10 working groups and formulated 17 PICO-structured clinical questions [Patients, Intervention, Comparator, and Outcome]. A systematic literature search from January 1, 1991 to March 19, 2019 was conducted by a medical librarian using MEDLINE, EMBASE, and Cochrane Central databases. A shortlist of 30 provisional statements were further refined during a consensus meeting in Barcelona in October 2019 and subjected to a vote. In total 22 statements reached ≥ 80% agreement and were retained. RESULTS We established that it was key to identify patients at high risk of a complicated disease course at the earliest opportunity, to reduce bowel damage. Patients with perianal disease, stricturing or penetrating behaviour, or severe growth retardation should be considered for up-front anti-tumour necrosis factor [TNF] agents in combination with an immunomodulator. Therapeutic drug monitoring to guide treatment changes is recommended over empirically escalating anti-TNF dose or switching therapies. Patients with low-risk luminal CD should be induced with exclusive enteral nutrition [EEN], or with corticosteroids when EEN is not an option, and require immunomodulator-based maintenance therapy. Favourable outcomes rely on close monitoring of treatment response, with timely adjustments in therapy when treatment targets are not met. Serial faecal calprotectin measurements or small bowel imaging [ultrasound or magnetic resonance enterography] are more reliable markers of treatment response than clinical scores alone. CONCLUSIONS We present state-of-the-art guidance on the medical treatment and long-term management of children and adolescents with CD.
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Affiliation(s)
- Patrick F van Rheenen
- Department of Paediatric Gastroenterology, University of Groningen, University Medical Centre Groningen, Beatrix Children's Hospital, Groningen, The Netherlands
| | - Marina Aloi
- Pediatric Gastroenterology and Liver Unit, Maternal and Child Health Department, Sapienza - University of Rome, Rome, Italy
| | - Amit Assa
- Department of Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center, Petach Tikvah, Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Jiri Bronsky
- Paediatric Gastroenterology Unit, Department of Paediatrics, University Hospital Motol, Prague, Czech Republic
| | - Johanna C Escher
- Department of Paediatric Gastroenterology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Ulrika L Fagerberg
- Department of Pediatrics/Centre for Clinical Research, Västmanland Hospital, Västeras and Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Marco Gasparetto
- Department of Paediatric Gastroenterology, Barts Health Trust, The Royal London Children's Hospital, London, UK
| | | | - Anne Griffiths
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Paul Henderson
- Child Life and Health, University Of Edinburgh, Edinburgh, UK
| | - Sibylle Koletzko
- Department of Pediatrics, Division of Gastroenterology and Hepatology, Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany
- Department of Pediatrics, Gastroenterology and Nutrition, School of Medicine Collegium Medicum University of Warmia and Mazury, Olsztyn, Poland
| | - Kaija-Leena Kolho
- Department of Paediatrics, Children´s Hospital, University of Helsinki and Tampere University, Tampere, Finland
| | - Arie Levine
- Pediatric Gastroenterology and Nutrition Unit, Wolfson Medical Center, Tel Aviv University, Israel
| | - Johan van Limbergen
- Division of Pediatric Gastroenterology and Nutrition, Amsterdam UMC - location AMC, Amsterdam, The Netherlands
| | | | - Víctor Manuel Navas-López
- Pediatric Gastroenterology and Nutrition Unit, IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Salvatore Oliva
- Pediatric Gastroenterology and Liver Unit, Maternal and Child Health Department, Sapienza - University of Rome, Rome, Italy
| | - Lissy de Ridder
- Department of Paediatric Gastroenterology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Richard K Russell
- Department of Paediatric Gastroenterology and Nutrition, Royal Hospital for Sick Children, Edinburgh, UK
| | - Dror Shouval
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Antonino Spinelli
- Department of Colon and Rectal Surgery, Humanitas Clinical and Research Center - IRCCS, Rozzano Milano, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Dan Turner
- Paediatric Gastroenterology, Shaare Zedek Medical Centre, the Hebrew University of Jerusalem, Israel
| | - David Wilson
- Child Life and Health, University Of Edinburgh, Edinburgh, UK
| | - Eytan Wine
- Division of Pediatric Gastroenterology, Edmonton Pediatric IBD Clinic (EPIC), Departments of Pediatrics & Physiology, University of Alberta, Edmonton, Canada
| | - Frank M Ruemmele
- Assistance Publique- Hôpitaux de Paris, Hôpital Necker Enfants Malades, Pediatric Gastroenterology, Paris, France
- Faculté de Médecine, Université Sorbonne Paris Cité, Paris Descartes, Paris, France
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13
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Therapeutic Drug Monitoring-guided High-dose Infliximab for Infantile-onset Inflammatory Bowel Disease: A Case Series. J Pediatr Gastroenterol Nutr 2020; 71:516-520. [PMID: 32639454 DOI: 10.1097/mpg.0000000000002832] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Very early-onset inflammatory bowel disease (IBD) and specifically infantile-onset IBD patients, are characterized by high rates of extensive colonic involvement and decreased response rate to standard therapeutic regimens, including infliximab (IFX). We present a case series of 4 patients with infantile-onset IBD achieving clinical and biologic remission, after treatment with therapeutic drug monitoring (TDM)-guided accelerated high-dose IFX therapy. All patients were treated with accelerated high-dose IFX induction of up to 22 mg/kg. In 3 of these patients, accelerated high-dose IFX was used following failure of intensified standard dose induction. All patients achieved remission following re-induction.We suggest that children with infantile-onset IBD may require a TDM-guided accelerated high-dose IFX induction and maintenance treatment in order to achieve and maintain remission. Personalized approach in these patients is essential in order to prevent underdosing and to avoid inappropriate interpretation of treatment failure.
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14
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Optimizing Antitumor Necrosis Factor Treatment in Pediatric Inflammatory Bowel Disease With Therapeutic Drug Monitoring. J Pediatr Gastroenterol Nutr 2020; 71:12-18. [PMID: 32142005 DOI: 10.1097/mpg.0000000000002704] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Biological agents have revolutionized inflammatory bowel disease treatment but primary nonresponse and secondary loss of response are common with resulting adverse outcomes. Clinical trials demonstrated an association between serum drug concentrations, as well as the presence of antidrug antibodies, and loss-of-response. Therapeutic drug monitoring (TDM), defined as the evaluation of drug concentrations and antidrug antibodies, is appearing as a strategy to optimize treatment and take full advantage from these drugs. TDM appears to be a promising tool in clinical practice, especially in pediatric patients, who have pronounced fluctuations in the pharmacokinetics of the drugs.The authors present a literature review about antitumor necrosis factor therapy optimization based on personalized treatment strategies according to TDM and possible strategies to recapture loss of response, including an algorithm for practical management.
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15
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Nikkonen A, Kolho K. Infliximab and its biosimilar produced similar first-year therapy outcomes in patients with inflammatory bowel disease. Acta Paediatr 2020; 109:836-841. [PMID: 31535405 DOI: 10.1111/apa.15026] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 08/08/2019] [Accepted: 09/16/2019] [Indexed: 12/11/2022]
Abstract
AIM Tumour necrosis factor α inhibitors (anti-TNFα) are the main therapy for moderate to severe inflammatory bowel disease (IBD) in children. Biosimilars to the original drug infliximab are now available, but there are few reports on their real-life use. We compared the outcomes of patients treated with infliximab and its biosimilar, CT-P13. METHODS We collected outcome data on anti-TNFα-naive patients who started infliximab in the Children's Hospital, University of Helsinki, Finland, in 2015-2016. We studied 51 paediatric patients with IBD at a median age of 12 (range 4-16): 65% had Crohn disease, 23 received the original infliximab drug and 28 received the biosimilar. During 2015, infliximab was introduced to all treatment-naïve patients, and during 2016, all treatment-naïve patients received the biosimilar. RESULTS We found no statistically significant differences between the two drug products related to the outcome of the therapy during the first year. There were no significant differences in the trough levels between the treatment groups. Likewise, the proportion of patients with therapy enhancement was comparable between the two treatment groups. CONCLUSION The first-year therapy outcomes of infliximab and its biosimilar were comparable. There were no alarming signs of differences in safety.
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Affiliation(s)
- Anne Nikkonen
- Children's Hospital University of Helsinki and Helsinki University Hospital Helsinki Finland
| | - Kaija‐Leena Kolho
- Children's Hospital University of Helsinki and Helsinki University Hospital Helsinki Finland
- University of Tampere and Tampere University Hospital Tampere Finland
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16
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van Rheenen H, van Rheenen PF. Long-Term Efficacy of Anti-Tumor Necrosis Factor Agents in Pediatric Luminal Crohn's Disease: A Systematic Review of Real-World Evidence Studies. Pediatr Gastroenterol Hepatol Nutr 2020; 23:121-131. [PMID: 32206624 PMCID: PMC7073369 DOI: 10.5223/pghn.2020.23.2.121] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/05/2020] [Indexed: 12/12/2022] Open
Abstract
PURPOSE To determine the long-term efficacy of the anti-tumor necrosis factor (TNF) agents, infliximab (IFX) and adalimumab (ADA), in pediatric luminal Crohn's disease (CD) by performing a systematic literature review. METHODS An electronic search was performed in Medline, Embase, and the Cochrane Library from inception to September 26, 2019. Eligible studies were cohort studies with observation periods that exceeded 1 year. Studies that reported time-to-event analyses were included. Events were defined as discontinuation of anti-TNF therapy for secondary loss of response. We extracted the probabilities of continuing anti-TNF therapy 1, 2, and 3 years after initiation. RESULTS In total, 2,464 papers were screened, 94 were selected for full text review, and 13 studies (11 on IFX, 2 on ADA) met our eligibility criteria for inclusion. After 1 year, 83-97% of patients were still receiving IFX therapy. After 2 and 3 years the probability of continuing IFX therapy decreased to 67-91% and 61-85%, respectively. In total, 5 of the 11 studies subgrouped by concomitant medication consistently showed that the probabilities of continuing IFX therapy in patients with prolonged immunomodulator use were higher than those in patients on IFX monotherapy. CONCLUSION This review of real-world evidence studies confirms the long-term therapeutic benefit of IFX therapy in diverse cohorts of children with luminal CD. Moreover, it supports the view that combination therapy with an immunomodulator prolongs the durability of IFX therapy in patients who previously failed to recover following first-line therapy. The limited number of time-to-event studies in patients on ADA prevented us from drawing definite conclusions about its long-term efficacy.
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Affiliation(s)
- Hanna van Rheenen
- Amsterdam University Medical Centers, Location VU Medical Centre, Amsterdam, Netherlands
| | - Patrick Ferry van Rheenen
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, University of Groningen, University Medical Centre Groningen, Groningen, Netherlands
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17
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Bauman LE, Xiong Y, Mizuno T, Minar P, Fukuda T, Dong M, Rosen MJ, Vinks AA. Improved Population Pharmacokinetic Model for Predicting Optimized Infliximab Exposure in Pediatric Inflammatory Bowel Disease. Inflamm Bowel Dis 2020; 26:429-439. [PMID: 31287855 PMCID: PMC7171445 DOI: 10.1093/ibd/izz143] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Many pediatric patients with inflammatory bowel disease (IBD) lose response to infliximab (IFX) within the first year, and achieving a minimal target IFX trough concentration is associated with higher remission rates and longer durability. Population pharmacokinetic (PK) modeling can predict trough concentrations for individualized dosing. The object of this study was to refine a population PK model that accurately predicts individual IFX exposure during maintenance therapy using longitudinal real-practice data. METHODS We exported data from the electronic health records of pediatric patients with IBD treated with originator IFX at a single center between January 2011 and March 2017. Subjects were divided into discovery and validation cohorts. A population PK model was built and then validated. RESULTS We identified 228 pediatric patients with IBD who received IFX and had at least 1 drug concentration measured, including 135 and 93 patients in the discovery and validation cohorts, respectively. Weight, albumin, antibodies to IFX (ATI) detected by a drug-tolerant assay, and erythrocyte sedimentation rate (ESR) were identified as covariates significantly associated with IFX clearance and incorporated into the model. The model exhibited high accuracy for predicting target IFX trough concentrations with an area under the receiver operating characteristic curve (AUROC) of 0.86 (95% confidence interval [CI], 0.81-0.91) for population-based predictions without prior drug-level input. Accuracy increased further for individual-based predictions when prior drug levels were known, with an AUROC of 0.93 (95% CI, 0.90-0.97). CONCLUSIONS A population PK model utilizing weight, albumin, ordinal drug-tolerant ATI, and ESR accurately predicts IFX trough concentrations during maintenance therapy in real-practice pediatric patients with IBD. This model, which incorporates dynamic clinical information, could be used for individualized dosing decisions to increase response durability.
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Affiliation(s)
- Laura E Bauman
- Department of Pediatrics, University of California San Diego, La Jolla, California, USA,Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati, Ohio, USA
| | - Ye Xiong
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Tomoyuki Mizuno
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Philip Minar
- Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati, Ohio, USA,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Tsuyoshi Fukuda
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Min Dong
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Michael J Rosen
- Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati, Ohio, USA,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA,Address correspondence to: Michael J. Rosen, MD, MSCI, 3333 Burnet Ave, Cincinnati, OH 45229 ()
| | - Alexander A Vinks
- Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati, Ohio, USA,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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18
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Infliximab in young paediatric IBD patients: it is all about the dosing. Eur J Pediatr 2020; 179:1935-1944. [PMID: 32813123 PMCID: PMC7666662 DOI: 10.1007/s00431-020-03750-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/16/2020] [Accepted: 07/21/2020] [Indexed: 12/14/2022]
Abstract
Infliximab (IFX) is administered intravenously using weight-based dosing (5 mg/kg) in inflammatory bowel disease (IBD) patients. Our hypothesis is that especially young children need a more intensive treatment regimen than the current weight-based dose administration. We aimed to assess IFX pharmacokinetics (PK), based on existing therapeutic drug monitoring (TDM) data in IBD patients < 10 years. TDM data were collected retrospectively in 14 centres. Children treated with IFX were included if IFX was started as IBD treatment at age < 10 years (young patients, YP) and PK data were available. Older IBD patients aged 10-18 years were used as controls (older patients, OP). Two hundred and fifteen paediatric inflammatory bowel disease (PIBD) patients were eligible for the study (110 < 10 year; 105 ≥ 10 years). Median age was 8.3 years (IQR 6.9-8.9) in YP compared with 14.3 years (IQR 12.8-15.6) in OP at the start of IFX. At the start of maintenance treatment, 72% of YP had trough levels below therapeutic range (< 5.4 μg/mL). After 1 year of scheduled IFX maintenance treatment, YP required a significantly higher dose per 8 weeks compared with OP (YP; 9.0 mg/kg (IQR 5.0-12.9) vs. OP; 5.5 mg/kg (IQR 5.0-9.3); p < 0.001). The chance to develop antibodies to infliximab was relatively lower in OP than YP (0.329 (95% CI - 1.2 to - 1.01); p < 0.001), while the overall duration of response to IFX was not significantly different (after 2 years 53% (n = 29) in YP vs. 58% (n = 45) in OP; p = 0.56).Conclusion: Intensification of the induction scheme is suggested for PIBD patients aged < 10 years. What is Known? •Infliximab trough levels of paediatric IBD patients are influenced by several factors as dosing scheme, antibodies and inflammatory markers. •In 4.5-30% of the paediatric IBD patients, infliximab treatment was stopped within the first year. What is New? •The majority of young PIBD (< 10 years) have inadequate IFX trough levels at the start of maintenance treatment. •Young PIBD patients (< 10 years) were in need of a more intensive treatment regimen compared with older paediatric patients during 1 year of IFX treatment. •The chance to develop antibodies to infliximab was relatively higher in young PIBD patients (< 10 years).
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Abstract
The landscape of pediatric inflammatory bowel disease is rapidly evolving. The therapeutic advances seen in the adult arena are rapidly being adopted by pediatric gastroenterologists and evaluated in both controlled trials and real-world experience. Though anti-tumor necrosis factor agents have been the primary therapy over the last decade, recently there has been an expansion of therapeutic targets and alternative mechanism of action drugs with a focus on individualized and personalized therapy. By reviewing epidemiology, pathophysiology, and goals of treatment, we hope to frame the discussion of current and novel therapeutics for the pediatric gastroenterologist. As scientific discovery continues to push the envelope in defining our understanding of pediatric inflammatory bowel disease, the current era of therapeutics gives us hope that a cure may be realized soon.
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Affiliation(s)
- Bhaskar Gurram
- University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Ashish S. Patel
- University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
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20
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Hemperly A, Vande Casteele N. Clinical Pharmacokinetics and Pharmacodynamics of Infliximab in the Treatment of Inflammatory Bowel Disease. Clin Pharmacokinet 2019; 57:929-942. [PMID: 29330783 DOI: 10.1007/s40262-017-0627-0] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Infliximab was the first monoclonal antibody to be approved for the treatment of pediatric and adult patients with moderately to severely active Crohn's disease (CD) and ulcerative colitis (UC). It has been shown to induce and maintain both clinical remission and mucosal healing in pediatric and adult patients with inflammatory bowel disease (IBD) who are unresponsive or refractory to conventional therapies. The administration of infliximab is weight-based and the drug is administered intravenously. The volume of distribution of infliximab is low and at steady state ranges from 4.5 to 6 L. Therapeutic monoclonal antibodies, such as immunoglobulins, are cleared from the circulation primarily by catabolism. Median infliximab half-life is approximately 14 days. Infliximab concentration-time data in patients with CD and UC have been shown to be highly variable within an individual patient over time and between individuals by multiple population pharmacokinetic models. Covariates that have been identified to account for a part of the observed inter- and intra-individual variability in clearance are the presence of antidrug antibodies, use of concomitant immunomodulators, degree of systemic inflammation, serum albumin concentration, and body weight, which can affect the pharmacodynamic response. This article provides a comprehensive review of the clinical pharmacokinetics and pharmacodynamics of infliximab, as well as the role of therapeutic drug monitoring in the treatment of IBD.
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Affiliation(s)
- Amy Hemperly
- Department of Pediatric Gastroenterology, University of California San Diego, La Jolla, CA, USA
| | - Niels Vande Casteele
- Department of Medicine, University of California San Diego, 9500 Gilman Drive #0956, La Jolla, CA, 92093, USA.
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21
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Use of Biosimilars in Pediatric Inflammatory Bowel Disease: An Updated Position Statement of the Pediatric IBD Porto Group of ESPGHAN. J Pediatr Gastroenterol Nutr 2019; 68:144-153. [PMID: 30169454 DOI: 10.1097/mpg.0000000000002141] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biologic therapies have changed the outcome of both adult and pediatric patients with Inflammatory Bowel Disease (IBD). In September 2013, the first biosimilar of infliximab was introduced into the pharmaceutical market. In 2015, a first position paper on the use of biosimilars in pediatric IBD was published by the ESPGHAN IBD Porto group. Since then, more data have accumulated for both adults and children demonstrating biosimilars are an effective and safe alternative to the originator. In this updated position statement, we summarize current evidence and provide joint consensus statements regarding the recommended practice of biosimilar use in children with IBD.
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22
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Picoraro JA, Lee D, Heller CA, Weaver A, Hyams JS, Conklin LS, Otley A, Ziring D, Kugathasan S, Rosh JR, Mulberg A, Denson LA, Kappelman MD, Grossman AB, Bousvaros A, Park KT. Pediatric Inflammatory Bowel Disease Clinical Innovations Meeting of the Crohn's & Colitis Foundation: Charting the Future of Pediatric IBD. Inflamm Bowel Dis 2018; 25:27-32. [PMID: 29931102 PMCID: PMC8133504 DOI: 10.1093/ibd/izy205] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Indexed: 12/30/2022]
Abstract
The Crohn's & Colitis Foundation has facilitated transformational research in pediatric inflammatory bowel disease (IBD), through the RISK and PROTECT studies, that has laid the groundwork for a comprehensive understanding of molecular mechanisms of disease and predictors of therapeutic response in children. Despite these advances, children have lacked timely and informed access to the latest therapeutic advancements in IBD. The Crohn's & Colitis Foundation convened a Pediatric Resource Organization for Kids with Inflammatory Intestinal Diseases (PRO-KIIDS) Clinical Innovations Meeting at the inaugural Crohn's and Colitis Congress in January 2018 to devise how to advance the care of children with IBD. The working group selected 2 priorities: (1) accelerating therapies to children with IBD and (2) stimulating investigator-initiated research while fostering sustainable collaboration; and proposed 2 actions: (a) the convening of a task force to specifically address how to accelerate pharmacotherapies to children with IBD and (b) the funding of a multicenter clinical and translational research study that incorporates the building of critical research infrastructure.10.1093/ibd/izy205_video1izy205.video15799266615001.
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Affiliation(s)
- Joseph A Picoraro
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Columbia University Medical Center, New York, New York
| | - Dale Lee
- Division of Pediatric Gastroenterology and Hepatology, Seattle Children’s Hospital, University of Washington School of Medicine, Seattle, Washington
| | | | | | - Jeffrey S Hyams
- Division of Gastroenterology, Hepatology, and Nutrition, Connecticut Children’s Medical Center, Hartford, Connecticut
| | - Laurie S Conklin
- Division of Gastroenterology, Hepatology, and Nutrition, Children’s National Medical Center, Washington, DC,ReveraGen Biopharma, LLC, Rockville, Maryland
| | - Anthony Otley
- Division of Gastroenterology and Nutrition, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - David Ziring
- Pediatric Gastroenterology, Cedars-Sinai Medical Center, Los Angeles, California
| | - Subra Kugathasan
- Division of Pediatric Gastroenterology, Emory University School of Medicine, Atlanta, Georgia
| | - Joel R Rosh
- Pediatric Gastroenterology, Clinical Development and Research Affairs, Goryeb Children’s Hospital/Atlantic Health, Morristown, New Jersey
| | | | - Lee A Denson
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
| | - Michael D Kappelman
- Division of Pediatric Gastroenterology, University of North Carolina Chapel Hill, Chapel Hill, North Carolina
| | - Andrew B Grossman
- Division of Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Athos Bousvaros
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children’s Hospital, Boston, Massachusetts,Address correspondence to: Athos Bousvaros, MD, MPH, Inflammatory Bowel Disease Center, Children’s Hospital Boston, 300 Longwood Avenue, Boston, MA 02115 ()
| | - K T Park
- Division of Gastroenterology, Hepatology and Nutrition, Stanford University School of Medicine, Palo Alto, California
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Piester T, Frymoyer A, Christofferson M, Yu H, Bass D, Park KT. A Mobile Infliximab Dosing Calculator for Therapy Optimization in Inflammatory Bowel Disease. Inflamm Bowel Dis 2018; 24:227-234. [PMID: 29361094 PMCID: PMC6048868 DOI: 10.1093/ibd/izx037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Inadequate infliximab (IFX) drug exposure remains a clinical challenge and leads to high loss of response rates and therapy failure in inflammatory bowel disease (IBD). We aimed to determine the feasibility and pilot effectiveness of a novel, web-based, mobile IFX dosing calculator (mIDC) for therapy optimization. METHODS We developed an mIDC leveraging the known clinical variables of C-reative protein (CRP), albumin, patient's weight, disease activity indices, calprotectin, drug trough levels, and antibodies to IFX that significantly affect pharmacokinetics and/or outcomes. A prospective observational cohort study in pediatric and young adult IBD patients receiving maintenance IFX was performed. System-wide practice adoption of mIDC was achieved through a quality improvement (QI) initiative within a hospital-based infusion unit. RESULTS Forty-nine patients (median age: 16.0 years; 55% female; 65% Crohn's disease) were followed over 9 months. mIDC recommendations for dose optimization were followed by the treating physicians in 198 (89%) out of 222 infusions. Twenty-eight (13%) of 222 mIDC recommendations were to escalate IFX dosing; 15 (54%) of 28 escalation recommendations were declined, and these patients were more likely to already be receiving IFX dose intensification compared with those in whom escalation recommendations were followed (P < 0.05). From mIDC initiation to end of follow-up, mean albumin levels remained unchanged at 3.8 g/dL. Median CRP remained unchanged at 2 g/L. Median calprotectin levels showed a downward trend from 30 to 27 μg/g (n = 9, P < 0.05). The percentage of patients undergoing therapeutic drug monitoring in clinical care increased from 34% to 86% with the QI initiative. The target median IFX trough goal of >5 μg/mL was achieved with 81% probability throughout the QI initiative, an increase of 12% compared with pre-QI values. CONCLUSIONS The use of a novel mIDC is feasible and potentially effective, facilitating both standardization and individualization of therapy in clinical care. mIDC appears to be a practical IFX dosing tool for point-of-care use, leveraging individual pharmacokinetic considerations.
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Affiliation(s)
- Travis Piester
- Stanford Children’s Inflammatory Bowel Disease Center, Division of
Gastroenterology, Stanford University School of Medicine, Stanford, California
| | - Adam Frymoyer
- Division of Neonatal and Developmental Medicine, Department of Pediatrics,
Stanford University School of Medicine, Stanford, California
| | - Megan Christofferson
- Stanford Children’s Inflammatory Bowel Disease Center, Division of
Gastroenterology, Stanford University School of Medicine, Stanford, California
| | - Helen Yu
- Stanford Children’s Inflammatory Bowel Disease Center, Division of
Gastroenterology, Stanford University School of Medicine, Stanford, California
| | - Dorsey Bass
- Stanford Children’s Inflammatory Bowel Disease Center, Division of
Gastroenterology, Stanford University School of Medicine, Stanford, California
| | - K T Park
- Stanford Children’s Inflammatory Bowel Disease Center, Division of
Gastroenterology, Stanford University School of Medicine, Stanford, California,Address correspondence to: K. T. Park, MD, MS, Pediatric Gastroenterology,
Hepatology, and Nutrition, 750 Welch Road, Ste 116, Palo Alto, CA 94304 ()
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Mulugeta LY, Yao L, Mould D, Jacobs B, Florian J, Smith B, Sinha V, Barrett JS. Leveraging Big Data in Pediatric Development Programs: Proceedings From the 2016 American College of Clinical Pharmacology Annual Meeting Symposium. Clin Pharmacol Ther 2018; 104:81-87. [PMID: 29319159 DOI: 10.1002/cpt.975] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/21/2017] [Accepted: 12/01/2017] [Indexed: 12/26/2022]
Abstract
This article discusses the use of big data in pediatric drug development. The article covers key topics discussed at the ACCP annual meeting symposium in 2016 including the extent to which big data or real-world data can inform clinical trial design and substitute for efficacy and safety data typically obtained in clinical trials. The current states of use, opportunities, and challenges with the use of big data in future pediatric drug development are discussed.
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Affiliation(s)
| | - Lynne Yao
- U.S. Food and Drug Administration, Silver Spring, Maryland, USA
| | - Diane Mould
- Projections Research Inc, Phoenixville, Pennsylvania, USA
| | - Brian Jacobs
- Children's National Medical Center, Washington, DC; George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Jeffrey Florian
- U.S. Food and Drug Administration, Silver Spring, Maryland, USA
| | - Brian Smith
- Duke University Medical Center, Duke Clinical Research Institute, Durham, North Carolina, USA
| | - Vikram Sinha
- Quantitative Pharmacology and Pharmacometrics, Merck and Co, North Wales, Pennsylvania, USA
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Application of Population Pharmacokinetic Modeling for Individualized Infliximab Dosing Strategies in Crohn Disease. J Pediatr Gastroenterol Nutr 2017; 65:639-645. [PMID: 28471911 PMCID: PMC5670026 DOI: 10.1097/mpg.0000000000001620] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES The pharmacokinetics of infliximab (IFX) is highly variable in children with Crohn disease (CD), and a one-size-fits-all approach to dosing is inadequate. Model-based drug dosing can help individualize dosing strategies. We evaluated the predictive performance and clinical utility of a published population pharmacokinetic model of IFX in children with CD. METHODS Within a cohort of 34 children with CD who had IFX trough concentrations measured, the pharmacokinetics of each patient was estimated in NONMEM using a published population pharmacokinetic model. Infliximab concentrations were then predicted based on each patient's dosing history and compared with actual measured concentrations (n = 59). In addition, doses 5 to 10 mg/kg and dosing intervals every 4 to 8 weeks were simulated in each patient to examine dose-trough relationships. RESULTS Predicted concentrations were within ±1.0 μg/mL of actual measured concentrations for 88% of measurements. The median prediction error (ie, measure of bias) was -0.15 μg/mL (95% confidence interval -0.37 to -0.05 μg/mL) and absolute prediction error (ie, measure of precision) was 0.26 μg/mL (95% confidence interval 0.15 to 0.40 μg/mL). At standard maintenance dosing of 5 mg/kg every 8 weeks, a trough >3 μg/mL was predicted to be achieved in 32% of patients. To achieve a trough >3 μg/mL, a dosing interval ≤every 6 weeks was predicted to be required in 29% of patients. CONCLUSIONS A published IFX population pharmacokinetic model demonstrated accurate predictive performance in a pediatric CD population. Individualized IFX dosing strategies in children with CD will be critical to consistently achieve trough concentrations associated with optimal outcomes.
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Ohem J, Hradsky O, Zarubova K, Copova I, Bukovska P, Prusa R, Malickova K, Bronsky J. Evaluation of Infliximab Therapy in Children with Crohn's Disease Using Trough Levels Predictors. Dig Dis 2017; 36:40-48. [PMID: 28817809 DOI: 10.1159/000477962] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 06/01/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND In adults, infliximab (IFX) levels correlate with disease activity, and antibodies to IFX (ATIs) predict treatment failure. We aimed to determine the association of IFX levels and ATIs with disease activity in a paediatric population. We prospectively collected blood, stool, and clinical data from 65 patients (age 10.5-15.1 years) with Crohn's disease (CD) before IFX administration, and measured IFX trough levels, ATIs, and faecal calprotectin levels (CPT). Samples were collected during maintenance therapy. We used multivariate analysis to identify the predictors of IFX levels. SUMMARY Lower levels of IFX were associated with ATIs positivity (OR 0.027, 95% CI 0.009-0.077). Higher C-reactive protein (CRP) level, erythrocyte sedimentation rate, and CPT levels were found in patients with lower IFX levels. The optimal combination of sensitivity (0.5) and specificity (0.74) for disease activity was calculated for IFX levels ≥1.1 µg/mL using CRP level <5 mg/L as a marker of laboratory remission. In a model that used CPT ≤100 µg/g as the definition of remission, the optimal IFX trough level was 3.5 µg/mL. No independent association between remission and ATIs was found in our study population. However, we found an independentz association between IFX levels and serum albumin levels (OR 1.364, 95% CI 1.169-1.593), p < 0.001. Key Messages: The paediatric population was similar to adult populations in terms of the association between IFX and ATIs as well as between IFX and disease activity.
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Affiliation(s)
- Jan Ohem
- Gastroenterology and Nutrition Unit, Department of Paediatrics, 2nd Faculty of Medicine, Charles, University and Motol University Hospital, Prague, Czech Republic
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Guariso G, Gasparetto M. Treating children with inflammatory bowel disease: Current and new perspectives. World J Gastroenterol 2017; 23:5469-5485. [PMID: 28852307 PMCID: PMC5558111 DOI: 10.3748/wjg.v23.i30.5469] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 06/02/2017] [Accepted: 07/24/2017] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory condition of the gut characterised by alternating periods of remission and relapse. Whilst the mechanism underlying this disease is yet to be fully understood, old and newer generation treatments can only target selected pathways of this complex inflammatory process. This narrative review aims to provide an update on the most recent advances in treatment of paediatric IBD. A MEDLINE search was conducted using “paediatric inflammatory bowel disease”, “paediatric Crohn’s disease”, “paediatric ulcerative colitis”, “treatment”, “therapy”, “immunosuppressant”, “biologic”, “monitoring” and “biomarkers” as key words. Clinical trials, systematic reviews, and meta-analyses published between 2014 and 2016 were selected. Studies referring to earlier periods were also considered in case the data was relevant to our scope. Major advances have been achieved in monitoring the individual metabolism, toxicity and response to relevant medications in IBD including thiopurines and biologics. New biologics acting on novel mechanisms such as selective interference with lymphocyte trafficking are emerging treatment options. Current research is investing in the development of reliable prognostic biomarkers, aiming to move towards personalised treatments targeted to individual patients.
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Patel D, Park KT. Path of Interchangeability of Biosimilars in Pediatric Inflammatory Bowel Disease: Quality Before Cost Savings. J Pediatr Gastroenterol Nutr 2017; 65:134-136. [PMID: 28319603 PMCID: PMC5524607 DOI: 10.1097/mpg.0000000000001572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The advent of biosimilars in inflammatory bowel disease (IBD) represents an opportunity for cost-savings and increased patient access to effective disease-modifying therapies. While preliminary data in adult IBD and rheumatology patients suggest comparable effectiveness and pharmacokinetics between original biologics and biosimilars, long-term immunogenicity data are unknown. Without this data, conclusions about interchangeability should not be made for pediatric patients with IBD. Children affected by IBD, in particular, are a vulnerable group if automatic substitution and non-medical switching are allowed based on limited data in adult patients. Robust, long term immunogenicity data of biosimilars are needed in pediatric cohorts before policies allow interchangeability in children.
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Affiliation(s)
- Dimple Patel
- Saint Louis University School of Medicine, Saint Louis, MO
| | - KT Park
- Department of Pediatrics, Division of Gastroenterology, Stanford University Medical Center, Palo Alto, CA
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