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Chanchlani N, Lin S, Bewshea C, Hamilton B, Thomas A, Smith R, Roberts C, Bishara M, Nice R, Lees CW, Sebastian S, Irving PM, Russell RK, McDonald TJ, Goodhand JR, Ahmad T, Kennedy NA. Mechanisms and management of loss of response to anti-TNF therapy for patients with Crohn's disease: 3-year data from the prospective, multicentre PANTS cohort study. Lancet Gastroenterol Hepatol 2024; 9:521-538. [PMID: 38640937 DOI: 10.1016/s2468-1253(24)00044-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/31/2024] [Accepted: 02/09/2024] [Indexed: 04/21/2024]
Abstract
BACKGROUND We sought to report the effectiveness of infliximab and adalimumab over the first 3 years of treatment and to define the factors that predict anti-TNF treatment failure and the strategies that prevent or mitigate loss of response. METHODS Personalised Anti-TNF therapy in Crohn's disease (PANTS) is a UK-wide, multicentre, prospective observational cohort study reporting the rates of effectiveness of infliximab and adalimumab in anti-TNF-naive patients with active luminal Crohn's disease aged 6 years and older. At the end of the first year, sites were invited to enrol participants still receiving study drug into the 2-year PANTS-extension study. We estimated rates of remission across the whole cohort at the end of years 1, 2, and 3 of the study using a modified survival technique with permutation testing. Multivariable regression and survival analyses were used to identify factors associated with loss of response in patients who had initially responded to anti-TNF therapy and with immunogenicity. Loss of response was defined in patients who initially responded to anti-TNF therapy at the end of induction and who subsequently developed symptomatic activity that warranted an escalation of steroid, immunomodulatory, or anti-TNF therapy, resectional surgery, or exit from study due to treatment failure. This study was registered with ClinicalTrials.gov, NCT03088449, and is now complete. FINDINGS Between March 19, 2014, and Sept 21, 2017, 389 (41%) of 955 patients treated with infliximab and 209 (32%) of 655 treated with adalimumab in the PANTS study entered the PANTS-extension study (median age 32·5 years [IQR 22·1-46·8], 307 [51%] of 598 were female, and 291 [49%] were male). The estimated proportion of patients in remission at the end of years 1, 2, and 3 were, for infliximab 40·2% (95% CI 36·7-43·7), 34·4% (29·9-39·0), and 34·7% (29·8-39·5), and for adalimumab 35·9% (95% CI 31·2-40·5), 32·9% (26·8-39·2), and 28·9% (21·9-36·3), respectively. Optimal drug concentrations at week 14 to predict remission at any later timepoints were 6·1-10·0 mg/L for infliximab and 10·1-12·0 mg/L for adalimumab. After excluding patients who had primary non-response, the estimated proportions of patients who had loss of response by years 1, 2, and 3 were, for infliximab 34·4% (95% CI 30·4-38·2), 54·5% (49·4-59·0), and 60·0% (54·1-65·2), and for adalimumab 32·1% (26·7-37·1), 47·2% (40·2-53·4), and 68·4% (50·9-79·7), respectively. In multivariable analysis, loss of response at year 2 and 3 for patients treated with infliximab and adalimumab was predicted by low anti-TNF drug concentrations at week 14 (infliximab: hazard ratio [HR] for each ten-fold increase in drug concentration 0·45 [95% CI 0·30-0·67], adalimumab: 0·39 [0·22-0·70]). For patients treated with infliximab, loss of response was also associated with female sex (vs male sex; HR 1·47 [95% CI 1·11-1·95]), obesity (vs not obese 1·62 [1·08-2·42]), baseline white cell count (1·06 [1·02-1·11) per 1 × 109 increase in cells per L), and thiopurine dose quartile. Among patients treated with adalimumab, carriage of the HLA-DQA1*05 risk variant was associated with loss of response (HR 1·95 [95% CI 1·17-3·25]). By the end of year 3, the estimated proportion of patients who developed anti-drug antibodies associated with undetectable drug concentrations was 44·0% (95% CI 38·1-49·4) among patients treated with infliximab and 20·3% (13·8-26·2) among those treated with adalimumab. The development of anti-drug antibodies associated with undetectable drug concentrations was significantly associated with treatment without concomitant immunomodulator use for both groups (HR for immunomodulator use: infliximab 0·40 [95% CI 0·31-0·52], adalimumab 0·42 [95% CI 0·24-0·75]), and with carriage of HLA-DQA1*05 risk variant for infliximab (HR for carriage of risk variant: infliximab 1·46 [1·13-1·88]) but not for adalimumab (HR 1·60 [0·92-2·77]). Concomitant use of an immunomodulator before or on the day of starting infliximab was associated with increased time without the development of anti-drug antibodies associated with undetectable drug concentrations compared with use of infliximab alone (HR 2·87 [95% CI 2·20-3·74]) or introduction of an immunomodulator after anti-TNF initiation (1·70 [1·11-2·59]). In years 2 and 3, 16 (4%) of 389 patients treated with infliximab and 11 (5%) of 209 treated with adalimumab had adverse events leading to treatment withdrawal. Nine (2%) patients treated with infliximab and two (1%) of those treated with adalimumab had serious infections in years 2 and 3. INTERPRETATION Only around a third of patients with active luminal Crohn's disease treated with an anti-TNF drug were in remission at the end of 3 years of treatment. Low drug concentrations at the end of the induction period predict loss of response by year 3 of treatment, suggesting higher drug concentrations during the first year of treatment, particularly during induction, might lead to better long-term outcomes. Anti-drug antibodies associated with undetectable drug concentrations of infliximab, but not adalimumab, can be predicted by carriage of HLA-DQA1*05 and mitigated by concomitant immunomodulator use for both drugs. FUNDING Guts UK, Crohn's and Colitis UK, Cure Crohn's Colitis, AbbVie, Merck Sharp and Dohme, Napp Pharmaceuticals, Pfizer, and Celltrion Healthcare.
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Affiliation(s)
- Neil Chanchlani
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Simeng Lin
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Claire Bewshea
- Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Benjamin Hamilton
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Amanda Thomas
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Rebecca Smith
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Christopher Roberts
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Maria Bishara
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Rachel Nice
- Department of Blood Science, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK
| | - Charlie W Lees
- Department of Gastroenterology, Edinburgh IBD Unit, Western General Hospital, NHS Lothian, Edinburgh, UK; Institute of Genetic and Cancer, University of Edinburgh, Edinburgh, UK
| | - Shaji Sebastian
- Gastroenterology and Hepatology, Hull and East Yorkshire Hospitals NHS Trust, Hull, UK; Hull York Medical School, University of Hull, Hull, UK
| | - Peter M Irving
- Department of Gastroenterology, Guy's and St Thomas' NHS Foundation Trust, London, UK; School of Immunology and Microbial Sciences, King's College London, London, UK
| | - Richard K Russell
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Royal Hospital for Children & Young People, Edinburgh, UK; Child Life and Health, University of Edinburgh, Royal Hospital for Children & Young People, Edinburgh, UK
| | - Timothy J McDonald
- Department of Blood Science, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK
| | - James R Goodhand
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Tariq Ahmad
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK
| | - Nicholas A Kennedy
- Department of Gastroenterology, Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK; Exeter IBD and Pharmacogenetics Research Group, University of Exeter, Exeter, UK.
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Hammoudi N, Hassid D, Bonnet J, Tran Minh ML, Baudry C, Vauthier A, Chedouba L, Houzé P, Lourenco N, Aparicio T, Gornet JM, Allez M. Infliximab desensitization in patients with inflammatory bowel diseases: a safe therapeutic alternative. Scand J Gastroenterol 2024; 59:553-560. [PMID: 38353236 DOI: 10.1080/00365521.2024.2316765] [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: 11/29/2023] [Accepted: 02/05/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND Hypersensitivity reactions (HSR) to the administration of infliximab (IFX) in Inflammatory Bowel Diseases (IBD) patients are not rare and usually lead to drug discontinuation. We report data on safety and effectiveness of desensitization to IFX in patients with previous HSR. METHODS We conducted a retrospective monocentric observational study. Patients for whom a desensitization protocol to IFX was realized after a previous HSR were included. Anti-drug antibodies (ADA) and IFX trough levels at both inclusion and six months after desensitization were collected. Clinical outcomes, including recurrence of HSR were evaluated. RESULTS From 2005 to 2020, 27 patients (Crohn's Disease: 26 (96%) were included). Desensitization after HSR was performed after a median time of 10.4 months (2.9-33.1). Nineteen (70%) patients received immunosuppressants at time of desensitization. Eight (30%) patients presented HSR at first (n = 2), second (n = 4) or third (n = 2) IFX perfusion after desensitization. None led to intensive care unit transfer or death. Thirteen (48%) had clinical response at 6 months and 8 (29%) were still under IFX treatment two years after desensitization. IFX trough levels and ADA were available for 14 patients at time of desensitization. Most patients (12 out of 14) had ADA at a high level. At 6 months, among the 7 patients with long term response to IFX, 4 presented a decrease of ADA titers and 2 had a significant trough level of IFX. CONCLUSION IFX desensitization in patients with IBD is a safe therapeutic alternative and represents a potential option for patients refractory to multiple biologics.What is already known? Hypersensitivity reactions to the administration of infliximab is frequent. Occurrence of hypersensitivity reaction, either immediate or delayed, usually leads to permanent drug discontinuation.What is new here? Infliximab desensitization is well tolerated with no hypersensitivity reaction recurrence in 70% of patients. Clinical success at 6 months was of 48% and around a third of patients remained under infliximab therapy two years after desensitization. Antidrug antibodies decreased and infliximab trough levels increased in these patients showing the impact of desensitization on immunogenicity.How can this study help patient care? Infliximab desensitization represents a potential option for patients refractory to multiple biologics who presented hypersensitivity reaction to the drug.
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Affiliation(s)
- Nassim Hammoudi
- INSERM U1160, EMiLy, Institut de Recherche Saint-Louis, Université de Paris Cité, Paris, France
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Déborah Hassid
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Joëlle Bonnet
- INSERM U1160, EMiLy, Institut de Recherche Saint-Louis, Université de Paris Cité, Paris, France
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - My-Linh Tran Minh
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Clotilde Baudry
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Anne Vauthier
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Leila Chedouba
- INSERM U1160, EMiLy, Institut de Recherche Saint-Louis, Université de Paris Cité, Paris, France
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Pascal Houzé
- Laboratory of Toxicology, Federation of Toxicology, Lariboisière Hospital, Paris, France
- INSERM UMRS-1144, University of Paris, Paris, France
| | - Nelson Lourenco
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Thomas Aparicio
- INSERM U1160, EMiLy, Institut de Recherche Saint-Louis, Université de Paris Cité, Paris, France
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Jean-Marc Gornet
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
| | - Matthieu Allez
- INSERM U1160, EMiLy, Institut de Recherche Saint-Louis, Université de Paris Cité, Paris, France
- Gastroenterology Department, AP-HP, Hôpital Saint-Louis/Lariboisière, Paris, France
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3
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Ovesen PD, Ilvemark JFKF, Wilkens R, Steenholdt C, Seidelin J. Predicting treatment response in ASUC: do we measure systemic severity, organ response or both? Gut 2024:gutjnl-2023-331793. [PMID: 38561214 DOI: 10.1136/gutjnl-2023-331793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/26/2024] [Indexed: 04/04/2024]
Affiliation(s)
- Pernille D Ovesen
- Department of Gastroenterology and Hepatology, Herlev Hospital, Herlev, Denmark
| | | | - Rune Wilkens
- Digestive Disease Center, Copenhagen University Hospital - Bispebjerrg, Copenhagen, Denmark
- Copenhagen Intestinal Ultrasound, Copenhagen, Denmark
| | - Casper Steenholdt
- Department of Gastroenterology and Hepatology, Herlev Hospital, Herlev, Denmark
| | - Jakob Seidelin
- Department of Gastroenterology and Hepatology, Herlev Hospital, Herlev, Denmark
- Department of Clinical Science, University of Copenhagen Faculty of Health and Medical Sciences, Kobenhavn, Denmark
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Nguyen AL, Gibson PR, Upton RN, Mould DR, Sparrow MP. Application of a Precision-Dosing Model to a Real-World Cohort of Patients on Infliximab Maintenance Therapy: Drug Usage and Cost Analysis. J Clin Pharmacol 2024; 64:399-409. [PMID: 37964618 DOI: 10.1002/jcph.2384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/12/2023] [Indexed: 11/16/2023]
Abstract
Precision-dosing models forecast infliximab doses to achieve targeted trough concentrations in patients with inflammatory bowel disease (IBD). These models have shown to reduce nonresponse and improve patient outcomes. We compared infliximab doses determined by iDOSE precision dosing with standard dosing, and the associated drug costs, in patients with IBD. In this retrospective study, patients with IBD treated with infliximab every 8 weeks at 5 mg/kg were included. An infliximab dose was named dose X if 3 previous infliximab doses, laboratory values including trough infliximab concentrations, and the patient's weight were recorded. The actual dose X was compared to an iDOSE-predicted dose X. Net drug use and costs were evaluated. A total of 174 patients-56% men; median age, 36 (interquartile range, 29-47) years; 135 with Crohn disease; and 31 with ulcerative colitis-were included, with 417 dose X recordings. Median prior infliximab therapy was 2 (0-4) years. Comparing actual dose X with predicted dose X, 52% and 32% of doses were subtherapeutic when aiming for trough concentrations of 5-10 and 3-7 μg/mL, respectively. Treatment costs increased by 102% and 29% for the 2 trough ranges, respectively. On multivariate regression analysis, subtherapeutic infliximab concentrations were associated with ulcerative colitis compared with Crohn disease (odds ratio, 9.81; 95% confidence interval, 1.28-75.40; P = .028) and predose X infliximab trough concentration [odds ratio, 0.07; 95% confidence interval, 0.03-0.15; P < .001]. Over half of maintenance infliximab drug doses were too low to achieve infliximab blood concentrations of 5 μg/mL or greater. While applying precision dosing may improve patient outcomes, drug costs could be considerably greater.
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Affiliation(s)
- Anke L Nguyen
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Victoria, Australia
- Department of Gastroenterology, Monash Health, Melbourne, Australia
| | - Peter R Gibson
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Victoria, Australia
| | - Richard N Upton
- Projections Research, Inc., Phoenixville, PA, USA
- University of South Australia, Adelaide, Australia
| | | | - Miles P Sparrow
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Victoria, Australia
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Jang KK, Ercelen D, Cen Feng JYC, Gurunathan S, Zhou C, Korman A, Newell L, Hudesman D, Jones DR, Loke P, Axelrad JE, Cadwell K. Tofacitinib uptake by patient-derived intestinal organoids predicts individual clinical responsiveness. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.02.583137. [PMID: 38712048 PMCID: PMC11071318 DOI: 10.1101/2024.03.02.583137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Background & Aims Despite increasing therapeutic options in the treatment of ulcerative colitis (UC), achieving disease remission remains a major clinical challenge. Nonresponse to therapy is common and clinicians have little guidance in selecting the optimal therapy for an individual patient. This study examined whether patient-derived materials could predict individual clinical responsiveness to the Janus kinase (JAK) inhibitor, tofacitinib, prior to treatment initiation. Method In 48 patients with UC initiating tofacitinib, we longitudinally collected clinical covariates, stool, and colonic biopsies to analyze the microbiota, transcriptome, and exome variations associated with clinical responsiveness at week 24. We established patient-derived organoids (n = 23) to determine how their viability upon stimulation with proinflammatory cytokines in the presence of tofacitinib related to drug responsiveness in patients. We performed additional biochemical analyses of organoids and primary tissues to identify the mechanism underlying differential tofacitinib sensitivity. Results The composition of the gut microbiota, rectal transcriptome, inflammatory biomarkers, and exome variations were indistinguishable among UC patients prior to tofacitinib treatment. However, a subset of patient-derived organoids displayed reduced sensitivity to tofacitinib as determined by the ability of the drug to inhibit STAT1 phosphorylation and loss of viability upon cytokine stimulation. Remarkably, sensitivity of organoids to tofacitinib predicted individual clinical patient responsiveness. Reduced responsiveness to tofacitinib was associated with decreased levels of the cationic transporter MATE1, which mediates tofacitinib uptake. Conclusions Patient-derived intestinal organoids predict and identify mechanisms of individual tofacitinib responsiveness in UC. Specifically, MATE1 expression predicted clinical response to tofacitinib.
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Gonzalez CG, Stevens TW, Verstockt B, Gonzalez DJ, D'Haens G, Dulai PS. Crohn's Patient Serum Proteomics Reveals Response Signature for Infliximab but not Vedolizumab. Inflamm Bowel Dis 2024:izae016. [PMID: 38367209 DOI: 10.1093/ibd/izae016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Indexed: 02/19/2024]
Abstract
BACKGROUND Crohn's disease is a chronic inflammatory bowel disease that affects the gastrointestinal tract. Common biologic families used to treat Crohn's are tumor necrosis factor (TNF)-α blockers (infliximab and adalimumab) and immune cell adhesion blockers (vedolizumab). Given their differing mechanisms of action, the ability to monitor response and predict treatment efficacy via easy-to-obtain blood draws remains an unmet need. METHODS To investigate these gaps in knowledge, we leveraged 2 prospective cohorts (LOVE-CD, TAILORIX) and profiled their serum using high-dimensional isobaric-labeled proteomics before treatment and 6 weeks after treatment initiation with either vedolizumab or infliximab. RESULTS The proportion of patients endoscopically responding to treatment was comparable among infliximab and vedolizumab cohorts; however, the impact of vedolizumab on patient sera was negligible. In contrast, infliximab treatment induced a robust response including increased blood-gas regulatory response proteins, and concomitant decreases in inflammation-related proteins. Further analysis comparing infliximab responders and nonresponders revealed a lingering innate immune enrichments in nonresponders and a unique protease regulation signature related to clotting cascades in responders. Lastly, using samples prior to infliximab treatment, we highlight serum protein biomarkers that potentially predict a positive response to infliximab treatment. CONCLUSIONS These results will positively impact the determination of appropriate patient treatment and inform the selection of clinical trial outcome metrics.
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Affiliation(s)
- Carlos G Gonzalez
- Department of Pharmacology, University of California San Diego, La Jolla, CA, USA
- Skaggs School of Pharmacy, University of California San Diego, La Jolla, CA, USA
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
| | - Toer W Stevens
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Bram Verstockt
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
- Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - David J Gonzalez
- Department of Pharmacology, University of California San Diego, La Jolla, CA, USA
- Skaggs School of Pharmacy, University of California San Diego, La Jolla, CA, USA
| | - Geert D'Haens
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Parambir S Dulai
- Department of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine Northwestern University, Chicago, IL USA
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7
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Vuyyuru SK, Jairath V. Unresolved challenges in acute severe ulcerative colitis. Indian J Gastroenterol 2024; 43:9-14. [PMID: 38189896 DOI: 10.1007/s12664-023-01503-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Affiliation(s)
| | - Vipul Jairath
- Departments of Medicine, Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON, N6A 3K7, Canada.
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AbdelMeguid AMA, Whitehead E, Sebastian S. Modern practical management of acute severe colitis. Indian J Gastroenterol 2024; 43:78-92. [PMID: 38407787 DOI: 10.1007/s12664-024-01522-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 12/28/2023] [Indexed: 02/27/2024]
Abstract
Acute severe ulcerative colitis (ASUC) is one of life-threatening complications that occur in one-fifth of ulcerative colitis (UC) patients with significant morbidity and an estimated mortality rate up to 1%. There are no validated clinical scoring systems for ASUC. Intravenous corticosteroids remain the cornerstone for the management of ASUC patients However, one-third of patients are steroid refractory and require colectomy in the pre-biologic era or salvage therapy in the post-biologic era. The currently available predictors of non-response to steroids and salvages therapy are sub-optimal. Furthermore, there is a need for the development of clear outcome measures for ASUC patients. Although infliximab and cyclosporin are both effective as salvage therapy, they still carry a rate of treatment failure. Hence, there is an unmet need to explore alternative therapeutic options before colectomy particularly in prior infliximab-exposed patients. This may include the introduction of small molecules with rapid onset of action as a salvage or sequential therapy and the use of slow-onset other biological therapy after "bridging" with cyclosporine. In this article, we explore the current best evidence-based practice and detail the gaps in knowledge in the management of ASUC.
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Affiliation(s)
| | - Emma Whitehead
- IBD Unit, Hull University Teaching Hospitals, Hull, HU3 2JZ, UK
| | - Shaji Sebastian
- IBD Unit, Hull University Teaching Hospitals, Hull, HU3 2JZ, UK.
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Zitomersky N, Chi L, Liu E, Bray KR, Papamichael K, Cheifetz AS, Snapper SB, Bousvaros A, Silvester JA. Anti-infliximab antibodies and low infliximab levels correlate with drug discontinuation in pediatric inflammatory bowel disease. J Pediatr Gastroenterol Nutr 2024; 78:261-271. [PMID: 38374555 PMCID: PMC10883602 DOI: 10.1002/jpn3.12074] [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: 10/07/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 02/21/2024]
Abstract
BACKGROUND Infliximab (IFX) use is limited by loss of response often due to the development of anti-IFX antibodies and low drug levels. METHODS We performed a single center prospective observational cohort study of pediatric and young adult subjects with inflammatory bowel disease (IBD) on IFX with over 3 years of follow-up. Infliximab levels (IFXL) and antibodies to infliximab (ATI) were measured throughout the study. Subjects were followed until IFX was discontinued. RESULTS We enrolled 219 subjects with IBD (184: Crohn's disease; 33: Ulcerative colitis; and 2 Indeterminant colitis; 84 female, median age 14.4 years, 37% on concomitant immunomodulator). Nine hundred and nineteen serum samples (mean 4.2 ± 2.1 per patient) were tested for IFXL and ATI. During the study, 31 (14%) subjects discontinued IFX. Sixty patients had ATI. Twenty-two of those 60 patients with ATI discontinued IFX; 14 of 31 patients who discontinued IFX had detectable ATI at study onset. The combination of ATI and IFXL < 5 µg/mL at study entry was associated with the highest risk of drug discontinuation (hazard ratios [HR] ATI 4.27 [p < 0.001] and IFXL < 5 µg/mL [HR]: 3.2 p = 0.001). Patients with IFXL 5-10 µg/mL had the lowest rate of discontinuation (6%). IFX dose escalation eliminated ATI in 21 of 60 subjects. CONCLUSIONS ATI is a strong predictor of needing to stop IFX use and inversely correlates with IFXL. Detection of ATI during therapeutic drug monitoring postinduction but also periodically during maintenance therapy identifies individuals who may benefit from IFX dose escalation and/or the addition of an immunomodulator, as these interventions may reduce or eliminate ATI.
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Affiliation(s)
- Naamah Zitomersky
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
| | - Lisa Chi
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Boston Children’s Hospital, Boston, MA
| | - Enju Liu
- Institutional Centers for Clinical and Translational Research, Boston Children’s Hospital, Boston, MA
| | - Kurtis R. Bray
- Prometheus Laboratories Inc. San Diego, CA
- ProciseDx LLC, San Diego, CA
| | | | - Adam S. Cheifetz
- Harvard Medical School, Boston, MA
- Beth Israel Deaconess Medical Center, Boston, MA
| | - Scott B. Snapper
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
- Division of Gastroenterology, Brigham and Women’s Hospital, Boston, MA
| | - Athos Bousvaros
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
| | - Jocelyn A. Silvester
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Boston Children’s Hospital, Boston, MA
- Harvard Medical School, Boston, MA
- Beth Israel Deaconess Medical Center, Boston, MA
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Dutt K, Vasudevan A. Therapeutic Drug Monitoring for Biologic and Small-Molecule Therapies for Inflammatory Bowel Disease. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:250. [PMID: 38399538 PMCID: PMC10890472 DOI: 10.3390/medicina60020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024]
Abstract
Background: Inflammatory bowel disease (IBD), encompassing ulcerative colitis and Crohn's disease, necessitates long-term medical therapy to manage symptoms and prevent complications. Therapeutic drug monitoring (TDM) has emerged as a strategy to optimize treatment efficacy, particularly with anti-tumour necrosis factor (anti-TNF) alpha drugs. This review explores the role of TDM for non-anti-TNF advanced therapies in IBD, focusing on vedolizumab, ustekinumab, tofacitinib, upadacitinib, risankizumab and ozanimod. Methods: The literature search, conducted through OVID (Medline) and PubMed, delves into proactive versus reactive TDM, timing of monitoring and methods for measuring drug levels and anti-drug antibodies. Results: While ustekinumab and vedolizumab exhibit exposure-response relationships, consensus on target levels and the role of TDM adjustments remains elusive. Limited data on risankizumab suggest a dose-dependent response, while for small molecule therapies (janus kinase inhibitors and ozanimod), the absence of real-world data and commercially available TDM tools pose challenges. Conclusion: At present, with the available data, there is a limited role for TDM in non-anti-TNF biologic and small-molecule therapies. This review underscores the need for further research to delineate the utility of TDM in guiding treatment decisions for these agents.
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Affiliation(s)
- Krishneel Dutt
- Eastern Health, 8 Arnold Street, Box Hill, VIC 3128, Australia;
- Eastern Health Clinical School, Monash University, 8 Arnold Street, Box Hill, VIC 3128, Australia
| | - Abhinav Vasudevan
- Eastern Health, 8 Arnold Street, Box Hill, VIC 3128, Australia;
- Eastern Health Clinical School, Monash University, 8 Arnold Street, Box Hill, VIC 3128, Australia
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11
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Clinton JW, Cross RK. Personalized Treatment for Crohn's Disease: Current Approaches and Future Directions. Clin Exp Gastroenterol 2023; 16:249-276. [PMID: 38111516 PMCID: PMC10726957 DOI: 10.2147/ceg.s360248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 12/04/2023] [Indexed: 12/20/2023] Open
Abstract
Crohn's disease is a complex, relapsing and remitting inflammatory disorder of the gastrointestinal tract with a variable disease course. While the treatment options for Crohn's disease have dramatically increased over the past two decades, predicting individual patient response to treatment remains a challenge. As a result, patients often cycle through multiple different therapies before finding an effective treatment which can lead to disease complications, increased costs, and decreased quality of life. Recently, there has been increased emphasis on personalized medicine in Crohn's disease to identify individual patients who require early advanced therapy to prevent complications of their disease. In this review, we summarize our current approach to management of Crohn's disease by identifying risk factors for severe or disabling disease and tailoring individual treatments to patient-specific goals. Lastly, we outline our knowledge gaps in implementing personalized Crohn's disease treatment and describe the future directions in precision medicine.
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Affiliation(s)
- Joseph William Clinton
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Raymond Keith Cross
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, USA
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12
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Vernia F, Viscido A, Latella G. Adsorptive cytapheresis in ulcerative colitis: A non-pharmacological therapeutic approach revisited. J Clin Apher 2023; 38:746-754. [PMID: 37787399 DOI: 10.1002/jca.22091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/03/2023] [Accepted: 09/14/2023] [Indexed: 10/04/2023]
Abstract
Adsorptive cytapheresis proves effective in a proportion of patients affected by ulcerative colitis. Relatively high cost and the need for apheresis facilities, prevented the widespread use of this therapeutic approach. More so following the introduction of anti-TNFα biosimilars which proved both effective and inexpensive. Anti-TNFα agents, however, are burdened by high rate of primary and secondary non-response and prompt switching to new, high-cost biologics, and small molecules. The present review analyzes advantages and disadvantages of adsorptive cytapheresis in the present clinical scenario and suggests its repositioning in the therapeutic workup of selected subgroups of ulcerative colitis patients. The extremely favorable safety profile makes adsorptive cytapheresis a viable therapeutic option in elderly and high-risk UC patients, as well as potential second-line treatment in corticosteroid-dependent patients and poor responders to first-line biologics.
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Affiliation(s)
- Filippo Vernia
- Gastroenterology Unit, Division of Gastroenterology, Hepatology, and Nutrition, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Angelo Viscido
- Gastroenterology Unit, Division of Gastroenterology, Hepatology, and Nutrition, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Giovanni Latella
- Gastroenterology Unit, Division of Gastroenterology, Hepatology, and Nutrition, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
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13
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Zeng Z, Jiang M, Li X, Yuan J, Zhang H. Precision medicine in inflammatory bowel disease. PRECISION CLINICAL MEDICINE 2023; 6:pbad033. [PMID: 38638127 PMCID: PMC11025389 DOI: 10.1093/pcmedi/pbad033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/13/2023] [Indexed: 04/20/2024] Open
Abstract
Inflammatory bowel disease (IBD) is an incurable disease characterized by remission-relapse cycles throughout its course. Both Crohn's disease (CD) and ulcerative colitis (UC), the two main forms of IBD, exhibit tendency to develop complications and substantial heterogeneity in terms of frequency and severity of relapse, thus posing great challenges to the clinical management for IBD. Current treatment strategies are effective in different ways in induction and maintenance therapies for IBD. Recent advances in studies of genetics, pharmacogenetics, proteomics and microbiome provide a strong driving force for identifying molecular markers of prognosis and treatment response, which should help clinicians manage IBD patients more effectively, and then, improve clinical outcomes and reduce treatment costs of patients. In this review, we summarize and discuss precision medicine in IBD, focusing on predictive markers of disease course and treatment response, and monitoring indices during therapeutic drug monitoring.
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Affiliation(s)
- Zhen Zeng
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Lab of Inflammatory Bowel Disease, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Mingshan Jiang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Lab of Inflammatory Bowel Disease, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xi Li
- Lab of Inflammatory Bowel Disease, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
- General Practice Ward/International Medical Center Ward, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jing Yuan
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Lab of Inflammatory Bowel Disease, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hu Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Lab of Inflammatory Bowel Disease, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
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14
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van Aalen EA, de Vries IR, Hanckmann ETL, Stevens JRF, Romagnoli TR, Derijks LJJ, Broeren MAC, Merkx M. Point-of-care therapeutic drug monitoring of tumour necrosis factor-α inhibitors using a single step immunoassay. SENSORS & DIAGNOSTICS 2023; 2:1492-1500. [PMID: 38013761 PMCID: PMC10633107 DOI: 10.1039/d3sd00131h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/04/2023] [Indexed: 11/29/2023]
Abstract
Therapeutic drug monitoring (TDM) of tumor necrosis factor-α (TNFα)-inhibitors adalimumab and infliximab is important to establish optimal drug dose and maximize treatment efficacy. Currently, TDM is primarily performed with ELISA techniques in clinical laboratories, resulting in a long sample-to-result workflow. Point-of-care (POC) detection of these therapeutic antibodies could significantly decrease turnaround times and allow for user-friendly home-testing. Here, we adapted the recently developed bioluminescent dRAPPID (dimeric Ratiometric Plug-and-Play Immunodiagnostics) sensor platform to allow POC TDM of infliximab and adalimumab. We applied the two best performing dRAPPID sensors, with limit-of-detections of 1 pM and 17 pM, to measure the infliximab and adalimumab levels in 49 and 40 patient serum samples, respectively. The analytical performance of dRAPPID was benchmarked with commercial ELISAs and yielded Pearson's correlation coefficients of 0.93 and 0.94 for infliximab and adalimumab, respectively. Furthermore, a dedicated bioluminescence reader was fabricated and used as a readout device for the TDM dRAPPID sensors. Subsequently, infliximab and adalimumab patient serum samples were measured with the TDM dRAPPID sensors and bioluminescence reader, yielding Pearson's correlation coefficients of 0.97 and 0.86 for infliximab and adalimumab, respectively, and small proportional differences with ELISA (slope was 0.97 ± 0.09 and 0.96 ± 0.20, respectively). The adalimumab and infliximab dRAPPID sensors, in combination with the dedicated bioluminescence reader, allow for ease-of-use TDM with a fast turnaround time and show potential for POC TDM outside of clinical laboratories.
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Affiliation(s)
- Eva A van Aalen
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands +31 40 247 4728
- Institute for Complex Molecular Systems, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Ivar R de Vries
- Department of Electrical Engineering, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Eva T L Hanckmann
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands +31 40 247 4728
- Institute for Complex Molecular Systems, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Jeannot R F Stevens
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands +31 40 247 4728
- Institute for Complex Molecular Systems, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Thomas R Romagnoli
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands +31 40 247 4728
- Institute for Complex Molecular Systems, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Luc J J Derijks
- Department of Clinical Pharmacy and Pharmacology, Máxima Medical Center P.O. Box 7777 5500 MB Veldhoven The Netherlands
- Department of Clinical Pharmacy and Toxicology, Maastricht University Medical Center P.O. Box 5800 6202 AZ Maastricht The Netherlands
| | - Maarten A C Broeren
- Laboratory of Clinical Chemistry and Haematology, Máxima Medical Center P.O. Box 7777 5500 MB Veldhoven The Netherlands
| | - Maarten Merkx
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands +31 40 247 4728
- Institute for Complex Molecular Systems, Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
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15
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Li Wai Suen CFD, Seah D, Choy MC, De Cruz P. Factors Associated With Response to Rescue Therapy in Acute Severe Ulcerative Colitis. Inflamm Bowel Dis 2023:izad183. [PMID: 37725044 DOI: 10.1093/ibd/izad183] [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: 04/24/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND Acute severe ulcerative colitis (ASUC) is a medical emergency for which colectomy is required in patients who do not respond to rescue therapy. While previous studies have predominantly focused on predicting outcome to first-line corticosteroid therapy, there is a need to understand the factors associated with response to rescue therapies in order to improve clinical outcomes. We reviewed the evidence regarding factors associated with response to rescue therapy in adults with ASUC and identified future directions for research. METHODS A systematic search of the literature was conducted, and 2 reviewers independently assessed studies for inclusion. RESULTS Of 3509 records screened, 101 completed studies were eligible for inclusion. We identified 42 clinical, hematological, biochemical, endoscopic, or pharmacological factors associated with response to rescue therapy. Older age (≥50 years), thiopurine experience, and cytomegalovirus or Clostridioides difficile infection were associated with a higher risk of nonresponse to rescue therapy. Biochemical factors associated with poorer response included an elevated C-reactive protein (CRP) ≥30mg/L on admission, hypoalbuminemia and an elevated ratio of CRP to albumin. Severe endoscopic findings, including a Mayo endoscopic score of 3 or Ulcerative Colitis Endoscopic Index of Severity ≥5, portended poorer outcomes. The role of fecal calprotectin and therapeutic value of measuring infliximab drug levels in ASUC remain to be defined. CONCLUSIONS Response to rescue therapy can be predicted by several specific factors, which would aid clinical decision-making. Existing and emerging factors should be integrated within predictive and prognostic models to help improve clinical outcomes.
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Affiliation(s)
- Christopher F D Li Wai Suen
- Department of Gastroenterology, Austin Health, Melbourne, VIC, Australia
- Department of Medicine, Austin Academic Centre, University of Melbourne, Melbourne, VIC, Australia
| | - Dean Seah
- Department of Gastroenterology, Austin Health, Melbourne, VIC, Australia
| | - Matthew C Choy
- Department of Gastroenterology, Austin Health, Melbourne, VIC, Australia
- Department of Medicine, Austin Academic Centre, University of Melbourne, Melbourne, VIC, Australia
| | - Peter De Cruz
- Department of Gastroenterology, Austin Health, Melbourne, VIC, Australia
- Department of Medicine, Austin Academic Centre, University of Melbourne, Melbourne, VIC, Australia
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16
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Al-Bawardy B, Jenkins SM, Snyder MR, Frinack JL, Ladwig PM, Loftus EV, Willrich MAV. Outcomes of Infliximab-Treated inflammatory bowel disease patients undergoing therapeutic drug monitoring with two different assays. Clin Biochem 2023; 119:110618. [PMID: 37507083 DOI: 10.1016/j.clinbiochem.2023.110618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 07/08/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
OBJECTIVES There are multiple assays for infliximab (IFX) drug level (IFX-DL) and antibody to infliximab (ATI) measurement. The aims of this study are to examine the correlation and outcomes of IFX-DL and ATI in inflammatory bowel disease (IBD) patients, simultaneously measured with different methods in different institutions. DESIGN AND METHODS Residual samples of IFX-treated IBD patients undergoing drug monitoring for IFX-DL and ATI, both measured by ECLIA (Esoterix Laboratories) were used to simultaneously quantify IFX-DL via LC-MS/MS and ATI via an in-house ECLIA (ih-ECLIA) (Mayo Clinic Laboratories). Comparisons of IFX-DL and ATI detection between the assays from different institutions were performed, along with a comparison between the assays by association of IFX-DL and ATI obtained by each method with clinical remission, endoscopic healing (EH) and normal serum C-reactive protein (CRP ≤ 8 mg/L). RESULTS A total of 151 patients were included (median age, 32 years (range, 12-84); 45.7% female). The median IFX-DL was 7 mcg/mL (IQR: 1.3, 19.4) and 6 mcg/mL (IQR: 0.9, 20) via LC-MS/MS and ECLIA, respectively (Spearman correlation coefficient r = 0.97). ATI was detected in 13/142 (9.2%) via ih-ECLIA of whom 100% had IFX-DL < 5 mcg/mL by LC-MS/MS. ATI was positive in 39/151 (25.8%) via ECLIA, and 84.6% of positives had IFX-DL < 5 mcg/mL by ECLIA. Compared to ECLIA, the frequency of ATI detection via ih-ECLIA was lower in patients in clinical remission (7.3% vs 36.6%; p = 0.0005), those with normal CRP (5.9% vs. 20.0%; p = 0.0005), and in patients with EH (5.3% vs 18.4%; p = 0.03). CONCLUSIONS IFX-DL was comparable between LC-MS/MS and ECLIA assays. Rate of ATI detection via ih-ECLIA was lower than ECLIA, which was more aligned with favorable clinical outcomes.
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Affiliation(s)
- Badr Al-Bawardy
- Yale School of Medicine, Section of Digestive Diseases, New Haven, CT, United States; Department of Internal Medicine, Section of Gastroenterology and Hepatology, King Faisal Specialist Hospital, Riyadh, Saudi Arabia
| | - Sarah M Jenkins
- Department of Quantitative Health Sciences, Division of Clinical Trials and Biostatistics, Mayo Clinic, Rochester, MN, United States
| | - Melissa R Snyder
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States
| | - Jody L Frinack
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States
| | - Paula M Ladwig
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States
| | - Edward V Loftus
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, United States
| | - Maria Alice V Willrich
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States.
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17
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Kucharzik T, Dignass A, Atreya R, Bokemeyer B, Esters P, Herrlinger K, Kannengiesser K, Kienle P, Langhorst J, Lügering A, Schreiber S, Stallmach A, Stein J, Sturm A, Teich N, Siegmund B. Aktualisierte S3-Leitlinie Colitis ulcerosa (Version 6.1) – Februar 2023 – AWMF-Registriernummer: 021-009. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2023; 61:1046-1134. [PMID: 37579791 DOI: 10.1055/a-2060-0935] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Affiliation(s)
- T Kucharzik
- Klinik für Allgemeine Innere Medizin und Gastroenterologie, Städtisches Klinikum Lüneburg, Lüneburg, Deutschland
| | - A Dignass
- Medizinische Klinik I, Agaplesion Markus Krankenhaus, Frankfurt, Deutschland
| | - R Atreya
- Medizinische Klinik 1 Gastroent., Pneumologie, Endokrin., Universitätsklinikum Erlangen, Erlangen, Deutschland
| | - B Bokemeyer
- Interdisziplinäres Crohn Colitis Centrum Minden - ICCCM, Minden, Deutschland
| | - P Esters
- Medizinische Klinik I, Agaplesion Markus Krankenhaus, Frankfurt, Deutschland
| | - K Herrlinger
- Innere Medizin I, Asklepios Klinik Nord, Hamburg, Deutschland
| | - K Kannengiesser
- Klinik für Allgemeine Innere Medizin und Gastroenterologie, Städtisches Klinikum Lüneburg, Lüneburg, Deutschland
| | - P Kienle
- Abteilung für Allgemein- und Viszeralchirurgie, Theresienkrankenhaus, Mannheim, Deutschland
| | - J Langhorst
- Klinik für Integrative Medizin und Naturheilkunde, Sozialstiftung Bamberg Klinikum am Bruderwald, Bamberg, Deutschland
| | - A Lügering
- Medizinisches Versorgungszentrum Portal 10, Münster, Deutschland
| | - S Schreiber
- Klinik für Innere Medizin I, Universitätsklinikum Schleswig Holstein, Kiel, Deutschland
| | - A Stallmach
- Klinik für Innere Medizin IV Gastroenterologie, Hepatologie, Infektiologie, Universitätsklinikum Jena, Jena, Deutschland
| | - J Stein
- Abteilung Innere Medizin mit Schwerpunkt Gastroenterologie, Krankenhaus Sachsenhausen, Frankfurt, Deutschland
| | - A Sturm
- Klinik für Innere Medizin mit Schwerpunkt Gastroenterologie, DRK Kliniken Berlin Westend, Berlin, Deutschland
| | - N Teich
- Internistische Gemeinschaftspraxis, Leipzig, Deutschland
| | - B Siegmund
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité Campus Benjamin Franklin - Universitätsmedizin Berlin, Berlin, Deutschland
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18
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Kim ES, Kim SK, Park DI, Kim HJ, Lee YJ, Koo JS, Kim ES, Yoon H, Lee JH, Kim JW, Shin SJ, Kim HW, Kim HS, Park YS, Kim YS, Kim TO, Lee J, Choi CH, Han DS, Chun J, Kim HS. Comparison of the Pharmacokinetics of CT-P13 Between Crohn's Disease and Ulcerative Colitis. J Clin Gastroenterol 2023; 57:601-609. [PMID: 35470308 DOI: 10.1097/mcg.0000000000001715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 03/20/2022] [Indexed: 12/10/2022]
Abstract
BACKGROUND We aimed to compare trough infliximab levels and the development of antidrug antibody (ADA) for 1 year between Crohn's disease (CD) and ulcerative colitis (UC) patients who were biologic-naive, and to evaluate their impact on clinical outcomes. METHODS This was a prospective, multicenter, observational study. Biologic-naive patients with moderate to severe CD or UC who started CT-P13, an infliximab biosimilar, therapy were enrolled. Trough drug and ADA levels were measured periodically for 1 year after CT-P13 initiation. RESULTS A total of 267 patients who received CT-P13 treatment were included (CD 168, UC 99). The rates of clinical remission (72% vs. 32.3%, P <0.001) at week 54 were significantly higher in CD than in UC. The median trough drug level (μg/mL) was significantly higher in CD than in UC up to week 14 (week 2, 18.7 vs. 14.7, P <0.001; week 6, 12.5 vs. 8.6, P <0.001; week 14, 3.4 vs. 2.5, P =0.001). The median ADA level (AU/mL) was significantly lower in CD than in UC at week 2 (6.3 vs. 6.5, P =0.046), week 30 (7.9 vs. 11.8, P =0.007), and week 54 (9.3 vs. 12.3, P =0.032). Development of ADA at week 2 [adjusted odds ratio (aOR)=0.15, P =0.026], initial C-reactive protein level (aOR=0.87, P =0.032), and CD over UC (aOR=1.92, P <0.001) were independent predictors of clinical remission at week 54. CONCLUSION Infliximab shows more favorable pharmacokinetics, including high drug trough and low ADA levels, in CD than in UC, which might result in better clinical outcomes for 1-year infliximab treatment in CD patients.
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Affiliation(s)
- Eun Soo Kim
- Department of Internal Medicine, Kyungpook National University, School of Medicine
| | - Sung Kook Kim
- Department of Internal Medicine, Kyungpook National University, School of Medicine
| | - Dong Il Park
- Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine
| | - Hyo Jong Kim
- Center for Crohn's and Colitis, Kyung Hee University Hospital
| | - Yoo Jin Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu
| | - Ja Seol Koo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ansan Hospital, Korea University College of Medicine, Ansan
| | - Eun Sun Kim
- Department of Internal Medicine, Korea University College of Medicine
| | - Hyuk Yoon
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam
| | - Ji Hyun Lee
- Digestive Endoscopic Center, Seoul Song Do Colorectal Hospital
| | - Ji Won Kim
- Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine
| | - Sung Jae Shin
- Department of Internal Medicine, Ajou University School of Medicine, Suwon
| | - Hyung Wook Kim
- Department of Internal Medicine, Pusan National University School of Medicine And Medical Research Institute
| | - Hyun-Soo Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju
| | - Young Sook Park
- Department of Internal Medicine, Eulji University School of Medicine, Eulji Hospital
| | - You Sun Kim
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine
| | - Tae Oh Kim
- Department of Internal Medicine, Haeundae Paik Hospital, Inje University College of Medicine, Busan
| | - Jun Lee
- Department of Internal Medicine, Chosun University, School of Medicine
| | - Chang Hwan Choi
- Department of Internal Medicine, College of Medicine, Chung-Ang University
| | - Dong Soo Han
- Department of Internal Medicine, Hanyang University College of Medicine, Guri, Korea
| | - Jaeyoung Chun
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul
| | - Hyun Soo Kim
- Department of Internal Medicine, Chonnam University Medical School, Gwangju
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19
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Gordon BL, Battat R. Therapeutic Drug Monitoring of Infliximab in Acute Severe Ulcerative Colitis. J Clin Med 2023; 12:jcm12103378. [PMID: 37240484 DOI: 10.3390/jcm12103378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/01/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Therapeutic drug monitoring (TDM) is a useful strategy in ulcerative colitis (UC). Nearly a quarter of UC patients will experience acute severe UC (ASUC) in their lifetime, including 30% who will fail first-line corticosteroid therapy. Steroid-refractory ASUC patients require salvage therapy with infliximab, cyclosporine, or colectomy. Fewer data are available for the use of TDM of infliximab in ASUC. The pharmacokinetics of ASUC make TDM in this population more complex. High inflammatory burden is associated with increased infliximab clearance, which is associated with lower infliximab drug concentrations. Observational data support the association between increased serum infliximab concentrations, lower clearance, and favorable clinical and endoscopic outcomes, as well as decreased rates of colectomy. Data regarding the benefit of accelerated or intensified dosing strategies of infliximab-as well as target drug concentration thresholds-in ASUC patients remain more equivocal, though limited by their observational nature. Studies are underway to further evaluate optimal dosing and TDM targets in this population. This review examines the evidence for TDM in patients with ASUC, with a focus on infliximab.
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Affiliation(s)
- Benjamin L Gordon
- Division of Gastroenterology and Hepatology, New York-Presbyterian/Weill Cornell Medical Center, New York, NY 10065, USA
| | - Robert Battat
- Center for Clinical and Translational Research in Inflammatory Bowel Diseases, Centre Hospitalier de l'Université de Montréal, Montreal, QC H2X 0A9, Canada
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20
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Cantarelli L, Carrillo Palau M, Hernandez Guerra M, Nazco Casariego GJ, Gutierrez Nicolás F. Definition of a therapeutic range for predicting long-term infliximab response in patients with inflammatory bowel disease. Med Clin (Barc) 2023; 160:107-112. [PMID: 35931568 DOI: 10.1016/j.medcli.2022.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 05/02/2022] [Accepted: 05/09/2022] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Monitoring plasma levels of Infliximab plays an important role in optimising treatment in patients with inflammatory bowel disease (IBD). The aim of the following study has been to determine the predictive potential of monitoring infliximab plasma levels for sustained clinical response and evaluate its usefulness to improve treatment efficacy and symptom control, in patients with IBD. METHODS This single-centre retrospective study (2017-2019) included patients diagnosed with IBD treated with infliximab. Serum levels and the occurrence of drug-associated immunogenicity were analysed at Week 8 post-induction and 6, 12 and 24 months. Clinical parameters and inflammatory markers were recorded such as subjective global assessment (SGA), C-reactive protein (CRP) and faecal calprotectin (FC). Factors associated with early discontinuation and dose intensification of infliximab were determined. RESULTS Multivariate analysis determined that IFX concentrations>7μg/mL at week 8, and at 6 months, are associated with inflammatory remission (p=0.046, 0.045). IFX>7μg/mL at 12 months predicted remission at 18 months of treatment (p=0.006). IFX values>3μg/mL at 12 months are associated with stable SGA at 18 months (p=0.001). Such values at 18 months are associated with stable SGA at 24 months (p=0.044). CONCLUSIONS AND RELEVANCE The predictive potential of monitoring IFX plasma levels as a strategy to evaluate sustained long-term clinical response was confirmed. Our results highlight the importance of its introduction into routine clinical practice to enable early identification of non-responders, treatment optimisation, relapse prevention and improve long-term therapy maintenance.
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Affiliation(s)
- Lorenzo Cantarelli
- Servicio de Farmacia. Complejo Hospitalario Universitario de Canarias, Tenerife, Spain.
| | - Marta Carrillo Palau
- Servicio de Aparato Digestivo, Complejo Hospitalario Universitario de Canarias, Tenerife, Spain
| | - Manuel Hernandez Guerra
- Servicio de Aparato Digestivo, Complejo Hospitalario Universitario de Canarias, Tenerife, Spain
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21
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Vieujean S, Louis E. Precision medicine and drug optimization in adult inflammatory bowel disease patients. Therap Adv Gastroenterol 2023; 16:17562848231173331. [PMID: 37197397 PMCID: PMC10184262 DOI: 10.1177/17562848231173331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 04/16/2023] [Indexed: 05/19/2023] Open
Abstract
Inflammatory bowel diseases (IBD) encompass two main entities including ulcerative colitis and Crohn's disease. Although having a common global pathophysiological mechanism, IBD patients are characterized by a significant interindividual heterogeneity and may differ by their disease type, disease locations, disease behaviours, disease manifestations, disease course as well as treatment needs. Indeed, although the therapeutic armamentarium for these diseases has expanded rapidly in recent years, a proportion of patients remains with a suboptimal response to medical treatment due to primary non-response, secondary loss of response or intolerance to currently available drugs. Identifying, prior to treatment initiation, which patients are likely to respond to a specific drug would improve the disease management, avoid unnecessary side effects and reduce the healthcare expenses. Precision medicine classifies individuals into subpopulations according to clinical and molecular characteristics with the objective to tailor preventative and therapeutic interventions to the characteristics of each patient. Interventions would thus be performed only on those who will benefit, sparing side effects and expense for those who will not. This review aims to summarize clinical factors, biomarkers (genetic, transcriptomic, proteomic, metabolic, radiomic or from the microbiota) and tools that could predict disease progression to guide towards a step-up or top-down strategy. Predictive factors of response or non-response to treatment will then be reviewed, followed by a discussion about the optimal dose of drug required for patients. The time at which these treatments should be administered (or rather can be stopped in case of a deep remission or in the aftermath of a surgery) will also be addressed. IBD remain biologically complex, with multifactorial etiopathology, clinical heterogeneity as well as temporal and therapeutic variabilities, which makes precision medicine especially challenging in this area. Although applied for many years in oncology, it remains an unmet medical need in IBD.
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Affiliation(s)
- Sophie Vieujean
- Hepato-Gastroenterology and Digestive Oncology, University Hospital CHU of Liège, Liège, Belgium
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22
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Na SY, Choi CH, Song EM, Bang KB, Park SH, Kim ES, Park JJ, Keum B, Lee CK, Lee BI, Ryoo SB, Koh SJ, Choi M, Kim JS. Korean clinical practice guidelines on biologics and small molecules for moderate-to-severe ulcerative colitis. Intest Res 2023; 21:61-87. [PMID: 35645321 PMCID: PMC9911265 DOI: 10.5217/ir.2022.00007] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 03/07/2022] [Indexed: 02/09/2023] Open
Abstract
Ulcerative colitis (UC), a relapsing-remitting chronic inflammatory bowel disease (IBD), has a variable natural course but potentially severe disease course. Since the development of anti-tumor necrosis factor (TNF) agents has changed the natural disease course of moderate-to-severe UC, therapeutic options for patients who failed conventional treatments are expanding rapidly. IBD clinical trials have demonstrated the potential efficacy and safety of novel biologics such as anti-integrin α4β7 and anti-interleukin-12/23 monoclonal antibodies and small molecules such as a Janus kinase inhibitor. Anti-TNF biosimilars also have been approved and are widely used in IBD patients. Wise drug choices should be made considering evidence-based efficacy and safety. However, the best position of these drugs remains several questions, with limited data from direct comparative trials. In addition, there are still concerns to be elucidated on the effect of therapeutic drug monitoring and combination therapy with immunomodulators. The appropriate treatment regimens in acute severe UC and the risk of perioperative use of biologics are unclear. As novel biologics and small molecules have been approved in Korea, we present the Korean guidelines for medical management of adult outpatients with moderate-to-severe UC and adult hospitalized patients with acute severe UC, focusing on biologics and small molecules.
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Affiliation(s)
- Soo-Young Na
- Department of Internal Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Chang Hwan Choi
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea,Correspondence to Chang Hwan Choi, Department of Internal Medicine, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea. Tel: +82-2-6299-1418, Fax: +82-2-6299-2064, E-mail:
| | - Eun Mi Song
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Ki Bae Bang
- Department of Internal Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Sang Hyoung Park
- Department of Gastroenterology and Inflammatory Bowel Disease Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Eun Soo Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jae Jun Park
- Department of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Bora Keum
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Chang Kyun Lee
- Department of Gastroenterology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Bo-In Lee
- Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Bum Ryoo
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Joon Koh
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Miyoung Choi
- National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Joo Sung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
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23
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Megna BW, Vaughn BP. Therapeutic Drug Monitoring in Practice for Inflammatory Bowel Disease. Curr Gastroenterol Rep 2022; 24:191-200. [PMID: 36459387 DOI: 10.1007/s11894-022-00854-5] [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] [Accepted: 10/11/2022] [Indexed: 06/17/2023]
Abstract
PURPOSE OF REVIEW To outline the development, rationale, and practical use of therapeutic drug monitoring in patients with inflammatory bowel disease. RECENT FINDINGS Therapeutic drug monitoring is traditionally discussed in terms of a proactive or reactive approach. However, these terms are not always consistently defined and can be confusing when translating research to clinical practice. Personalized approaches incorporating clinical context and precision medicine are emerging. Personalized therapeutic drug monitoring combines a structured and proactive strategy for monitoring biologic concentrations as well as identification of antidrug antibody development or subtherapeutic dosing in the setting of loss of response. Optimizing biologic therapy can improve outcomes and avoid loss of response. Why, when, and how we measure drug troughs and anti-drug antibodies is a moving target, though what is known is that the appropriate and evidence-based use of this practice prevents adverse events and improves outcomes in patients with inflammatory bowel disease.
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Affiliation(s)
- Bryant W Megna
- Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, MN, USA.
| | - Byron P Vaughn
- Division of Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, MN, USA
- Inflammatory Bowel Disease Program, University of Minnesota, Minneapolis, MN, USA
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24
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Patil SA, Bhat S, Limdi JK, Farraye FA, Cross RK. The Sincerest Form of Flattery? Biosimilars in Inflammatory Bowel Disease. Inflamm Bowel Dis 2022; 28:1915-1923. [PMID: 35353189 DOI: 10.1093/ibd/izac048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Indexed: 12/13/2022]
Abstract
Lay Summary
Biosimilar medications have the potential to significantly reduce the cost of treatment in patients with inflammatory bowel disease. Observational studies have shown similar efficacy and safety of biosimilars to biologic reference products. Shared decision-making is crucial to the successful implementation of these agents.
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Affiliation(s)
- Seema A Patil
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, 685 W. Baltimore Street, Suite 8-00, Baltimore, MD, 21201, USA
| | - Shubha Bhat
- Departments of Pharmacy and Gastroenterology, Digestive Disease and Surgery Institute, Cleveland Clinic, 9500 Euclid Ave, Cleveland, OH, 44195, USA
| | - Jimmy K Limdi
- Division of Gastroenterology-Section of IBD, The Northern Care Alliance Hospitals NHS Foundation Trust, Manchester Academic Health Sciences, University of Manchester, 2.41 Fairfield House, Manchester, BL9 7TD, UK
| | - Francis A Farraye
- Division of Gastroenterology and Hepatology, Inflammatory Bowel Disease Center, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
| | - Raymond K Cross
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, 685 W. Baltimore Street, Suite 8-00, Baltimore, MD, 21201, USA
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25
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Barrau M, Duprat M, Veyrard P, Tournier Q, Williet N, Phelip JM, Waeckel L, Cheifetz AS, Papamichael K, Roblin X, Paul S. A Systematic Review on the interest of Drug Tolerant assay in the monitoring of Inflammatory Bowel Disease. J Crohns Colitis 2022; 17:633-643. [PMID: 36301958 DOI: 10.1093/ecco-jcc/jjac164] [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: 04/05/2022] [Indexed: 02/08/2023]
Abstract
Many patients with inflammatory bowel disease (IBD) are treated with anti-tumor necrosis factor (TNF) therapies, of which infliximab (IFX) is most commonly used. Loss of response (LOR) to anti-TNF therapy due to immunogenic failure accounts for 20% of subsequent medical intervention and is defined, using a drug sensitive assay, as low or undetectable concentration of drug with high titers of anti-drug antibodies (ADAb). We performed a systematic review to investigate the use of a drug tolerant assay during both induction and maintenance to monitor patients treated with anti-TNFs. After the search on PubMed, 90 publications were reviewed. Most ADAb detection methods are drug sensitive, cannot detect ADAb in the presence of drug, and therefore cannot be used close to drug administration, when the drug concentration is too high. To overcome this major limitation, several drug-tolerant techniques have been developed and will be discussed in this review. Using drug-tolerant assays ADAb against infliximab (IFX) or adalimumab (ADM) can be detected during induction and predict primary non-response or LOR. Drug sensitive assays do not allow detection of ADAb during the induction phase as IFX or ADM concentration is typically high.
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Affiliation(s)
- Mathilde Barrau
- Department of Gastroenterology, University Hospital of Saint Etienne, Saint Etienne, France
| | - Manon Duprat
- Department of Immunology, CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR530, CIC 1408 Vaccinology, F42023 Saint-Etienne, France
| | - Pauline Veyrard
- Department of Gastroenterology, University Hospital of Saint Etienne, Saint Etienne, France
| | - Quentin Tournier
- Department of Gastroenterology, University Hospital of Saint Etienne, Saint Etienne, France
| | - Nicolas Williet
- Department of Gastroenterology, University Hospital of Saint Etienne, Saint Etienne, France
| | - Jean Marc Phelip
- Department of Gastroenterology, University Hospital of Saint Etienne, Saint Etienne, France
| | - Louis Waeckel
- Department of Immunology, CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR530, CIC 1408 Vaccinology, F42023 Saint-Etienne, France
| | - Adam S Cheifetz
- Center for Inflammatory Bowel Disease, Beth Israel Deaconess Medical Center Instructor in Medicine, Harvard Medical School
| | - Konstantinos Papamichael
- Center for Inflammatory Bowel Disease, Beth Israel Deaconess Medical Center Instructor in Medicine, Harvard Medical School
| | - Xavier Roblin
- Department of Gastroenterology, University Hospital of Saint Etienne, Saint Etienne, France
| | - Stephane Paul
- Department of Immunology, CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR530, CIC 1408 Vaccinology, F42023 Saint-Etienne, France
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26
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Song JH, Hong SN, Kim ER, Chang DK, Kim YH. Performance of Remsima® Monitor Drug Level versus RIDASCREEN IFX Monitoring in therapeutic drug monitoring of infliximab in patients with inflammatory bowel disease: A study of diagnostic accuracy. Medicine (Baltimore) 2022; 101:e30683. [PMID: 36197194 PMCID: PMC9509095 DOI: 10.1097/md.0000000000030683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Therapeutic drug monitoring (TDM) is effective in optimizing the efficacy of infliximab in patients with inflammatory bowel disease (IBD). An affordable way of monitoring is in high demand. This study evaluated the analytical and clinical performances of the newly available Remsima monitor kits and compared them with the established enzyme-linked immunosorbent assay kits. The trough level of infliximab in patients with IBD treated with an infliximab originator (Remicade) or biosimilar compounds (Remsima and Remaloce) was measured using a Remsima® Monitor Drug Level (Remsima) kit at the Samsung Medical Center, Seoul, Korea. Twenty-six plasma samples were collected immediately before the infusion of infliximab from 18 patients with IBD (Remicade, n = 8; Remsima, n = 6; and Remaloce, n = 4). The intra-assay intraclass correlation coefficient (ICC) of the RIDA and Remsima kits was 0.951 (95% CI = 0.908-0.976) and 0.990 (95% CI = 0.981-0.995). The inter-assay ICC of infliximab trough level between the RIDA and Remsima kits was very high (R = 0.971; 95% CI = 0.935-0.987), and the mean difference between the kits was 1.458 (95% limits of agreement = -3.302 to 6.219). The intra- and inter-assay reliabilities of all types of infliximab did not show significant differences. Qualitative stratification revealed substantial similarities between the kits (weighted kappa = 0.798). This study indicated that the Remsima kit was reproducible and highly correlated with the RIDA kit.
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Affiliation(s)
- Joo Hye Song
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sung Noh Hong
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- *Correspondence: Sung Noh Hong, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea (e-mail: )
| | - Eun Ran Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong Kyung Chang
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Young-Ho Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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27
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Kantasiripitak W, Outtier A, Wicha SG, Kensert A, Wang Z, Sabino J, Vermeire S, Thomas D, Ferrante M, Dreesen E. Multi‐model averaging improves the performance of model‐guided infliximab dosing in patients with inflammatory bowel diseases. CPT Pharmacometrics Syst Pharmacol 2022; 11:1045-1059. [PMID: 35706358 PMCID: PMC9381887 DOI: 10.1002/psp4.12813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/08/2022] [Accepted: 05/05/2022] [Indexed: 11/11/2022] Open
Abstract
Infliximab dosage de‐escalation without prior knowledge of drug concentrations may put patients at risk for underexposure and trigger the loss of response. A single‐model approach for model‐informed precision dosing during infliximab maintenance therapy has proven its clinical benefit in patients with inflammatory bowel diseases. We evaluated the predictive performances of two multi‐model approaches, a model selection algorithm and a model averaging algorithm, using 18 published population pharmacokinetic models of infliximab for guiding dosage de‐escalation. Data of 54 patients with Crohn’s disease and ulcerative colitis who underwent infliximab dosage de‐escalation after an earlier escalation were used. A priori prediction (based solely on covariate data) and maximum a posteriori prediction (based on covariate data and trough concentrations) were compared using accuracy and precision metrics and the classification accuracy at the trough concentration target of 5.0 mg/L. A priori prediction was inaccurate and imprecise, with the lowest classification accuracies irrespective of the approach (median 59%, interquartile range 59%–63%). Using the maximum a posteriori prediction, the model averaging algorithm had systematically better predictive performance than the model selection algorithm or the single‐model approach with any model, regardless of the number of concentration data. Only a single trough concentration (preferably at the point of care) sufficed for accurate and precise prediction. Predictive performance of both single‐ and multi‐model approaches was robust to the lack of covariate data. Model averaging using four models demonstrated similar predictive performance with a five‐fold shorter computation time. This model averaging algorithm was implemented in the TDMx software tool to guide infliximab dosage de‐escalation in the forthcoming prospective MODIFI study (NCT04982172).
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Affiliation(s)
- Wannee Kantasiripitak
- Department of Pharmaceutical and Pharmacological Sciences University of Leuven Leuven Belgium
| | - An Outtier
- Department of Gastroenterology and Hepatology University Hospitals Leuven Leuven Belgium
- Department of Chronic Diseases and Metabolism University of Leuven Leuven Belgium
| | - Sebastian G. Wicha
- Department of Clinical Pharmacy, Institute of Pharmacy University of Hamburg Hamburg Germany
| | - Alexander Kensert
- Department of Pharmaceutical and Pharmacological Sciences University of Leuven Leuven Belgium
- Department of Chemical Engineering Vrije Universiteit Brussels Brussels Belgium
| | - Zhigang Wang
- Department of Pharmaceutical and Pharmacological Sciences University of Leuven Leuven Belgium
| | - João Sabino
- Department of Gastroenterology and Hepatology University Hospitals Leuven Leuven Belgium
- Department of Chronic Diseases and Metabolism University of Leuven Leuven Belgium
| | - Séverine Vermeire
- Department of Gastroenterology and Hepatology University Hospitals Leuven Leuven Belgium
- Department of Chronic Diseases and Metabolism University of Leuven Leuven Belgium
| | - Debby Thomas
- Department of Pharmaceutical and Pharmacological Sciences University of Leuven Leuven Belgium
| | - Marc Ferrante
- Department of Gastroenterology and Hepatology University Hospitals Leuven Leuven Belgium
- Department of Chronic Diseases and Metabolism University of Leuven Leuven Belgium
| | - Erwin Dreesen
- Department of Pharmaceutical and Pharmacological Sciences University of Leuven Leuven Belgium
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28
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Taxonera C, Fernández-Aceñero MJ, Olivares D, Calvo M, Casis B, Bermejo F, López Serrano P, Iborra M, Mesonero F, Boscá Watts M, Díaz Del Arco C, Vera I, Olivares S, Algaba A, Alba C. Association of golimumab trough concentrations during maintenance with clinical, biological, endoscopic and histologic remission in patients with ulcerative colitis. Aliment Pharmacol Ther 2022; 56:614-624. [PMID: 35509152 DOI: 10.1111/apt.16964] [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: 03/01/2022] [Revised: 03/21/2022] [Accepted: 04/26/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Optimal golimumab concentration thresholds for important outcomes during maintenance are lacking. AIMS To investigate the association of golimumab trough concentrations during maintenance with key outcomes, including endoscopic and histologic remission, and long-term event-free persistence with golimumab, in patients with UC. METHODS This multi-centre, cross-sectional study included patients with UC on golimumab maintenance recruited either in remission or during a flare. Colonoscopy was scheduled, and study-specific rectocolonic biopsies were taken for blind central histologic reading. Samples for golimumab trough concentrations were collected close to colonoscopy. RESULTS Fifty-two patients were included. Median golimumab trough concentrations (μg/ml) were significantly higher in patients who had clinical remission (2.01 vs. 0.72, p = 0.047), combined clinical-biochemical remission (PMS ≤2 + faecal calprotectin <250 μg/g) (2.21 vs. 1.47, p = 0.041), endoscopic healing (Mayo endoscopic subscore 0) (2.52 vs. 1.47, p = 0.003), histologic remission (Geboes index ≤2.0) (2.33 vs. 1.50, p = 0.02) and disease clearance (clinical remission endoscopic healing + histologic remission) (2.52 vs. 1.70, p = 0.009), compared with those not meeting these criteria. Golimumab concentrations were significantly higher in patients who avoided golimumab dose escalation/discontinuation during follow-up (2.24 vs. 0.98, p = 0.012). Receiver-operating characteristic analyses identified golimumab thresholds [area under the curve] of 0.85 [0.76], 1.90 [0.76], 2.29 [0.75], 1.79 [0.68], 2.29 [0.72] and 1.56 [0.71] μg/ml as associated with clinical remission, combined remission, endoscopic healing, histologic remission, disease clearance and long-term event-free persistence with golimumab, respectively. CONCLUSIONS Golimumab trough concentrations during maintenance are associated with favourable treatment outcomes including endoscopic healing, histologic remission and long-term persistence on golimumab. We identified the optimal golimumab thresholds most closely associated with key outcomes.
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Affiliation(s)
- Carlos Taxonera
- Inflammatory Bowel Disease Unit, Department of Gastroenterology, Hospital Clínico San Carlos and Instituto de Investigación del Hospital Clínico San Carlos [IdISSC], Madrid, Spain.,Instituto de Investigación del Hospital Clínico San Carlos [IdISSC], Madrid, Spain
| | | | - David Olivares
- Inflammatory Bowel Disease Unit, Department of Gastroenterology, Hospital Clínico San Carlos and Instituto de Investigación del Hospital Clínico San Carlos [IdISSC], Madrid, Spain.,Instituto de Investigación del Hospital Clínico San Carlos [IdISSC], Madrid, Spain
| | - Marta Calvo
- Department of Gastroenterology, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Begoña Casis
- Department of Gastroenterology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Fernando Bermejo
- Department of Gastroenterology, Hospital Universitario Fuenlabrada, Madrid, Spain
| | - Pilar López Serrano
- Department of Gastroenterology, Hospital Universitario Fundación Alcorcón, Madrid, Spain
| | - Marisa Iborra
- Department of Gastroenterology, Hospital Universitario La Fe, Valencia, Spain
| | - Francisco Mesonero
- Department of Gastroenterology, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Maia Boscá Watts
- Department of Gastroenterology, Hospital Clínico Universitario de Valencia, Valencia, Spain
| | | | - Isabel Vera
- Department of Gastroenterology, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Sonsoles Olivares
- Department of Gastroenterology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Alicia Algaba
- Department of Gastroenterology, Hospital Universitario Fuenlabrada, Madrid, Spain
| | - Cristina Alba
- Inflammatory Bowel Disease Unit, Department of Gastroenterology, Hospital Clínico San Carlos and Instituto de Investigación del Hospital Clínico San Carlos [IdISSC], Madrid, Spain.,Instituto de Investigación del Hospital Clínico San Carlos [IdISSC], Madrid, Spain
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29
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Ishida N, Asai Y, Miyazu T, Tamura S, Tani S, Yamade M, Iwaizumi M, Hamaya Y, Osawa S, Furuta T, Sugimoto K. Lymphocyte-to-monocyte ratio is a short-term predictive marker of ulcerative colitis after induction of advanced therapy. Gastroenterol Rep (Oxf) 2022; 10:goac025. [PMID: 35692303 PMCID: PMC9178621 DOI: 10.1093/gastro/goac025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 05/04/2022] [Accepted: 05/04/2022] [Indexed: 12/04/2022] Open
Abstract
Advanced therapies for patients with mild-to-severe ulcerative colitis (UC) may result in treatment failure. We examined whether the lymphocyte-to-monocyte ratio (L/M ratio) could predict the failure of advanced therapies. This retrospective, observational, cohort study included 73 patients who were treated with advanced therapies at the Hamamatsu University School of Medicine (Shizuoka, Japan) between February 2011 and November 2020. The patients were divided into the non-failure and failure groups, and their leukocyte counts and ratios before induction were examined. Univariate and multivariate analyses were performed to identify the prognostic factors. Advanced therapies failed within 3 months in 15 (20.5%) patients. Only the L/M ratio was significantly lower in the failure group than in the non-failure group (P = 0.004). Receiver-operating characteristic (ROC) curve analysis revealed that an L/M ratio of ≤3.417 was predictive of treatment failure; the area under the curve (AUC) was 0.747 (95% CI, 0.620–0.874). Kaplan–Meier analysis revealed that the failure-free rate was significantly lower in the group with an L/M ratio of ≤3.417 than in the group with an L/M ratio of >3.417 (log-rank test P = 0.002). Cox proportional hazard regression analysis identified an L/M ratio of ≤3.417 as an independent risk factor for failure within 3 months after the induction of advanced therapies. Furthermore, ROC analysis of patients who did not receive immunomodulators also revealed that the cut-off L/M ratio was 3.417 and the AUC was 0.796 (95% CI, 0.666–0.925). In patients receiving advanced therapies for active UC, the L/M ratio can predict treatment failure within 3 months. L/M ratios could facilitate the transition from advanced therapies to subsequent treatments.
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Affiliation(s)
- Natsuki Ishida
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yusuke Asai
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Takahiro Miyazu
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Satoshi Tamura
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Shinya Tani
- Department of Endoscopic and Photodynamic Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Mihoko Yamade
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Moriya Iwaizumi
- Department of Laboratory Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yasushi Hamaya
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Satoshi Osawa
- Department of Endoscopic and Photodynamic Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Takahisa Furuta
- Center for Clinical Research, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Ken Sugimoto
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
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Bressler B, Steinhart AH. Has the Time Come to Say Goodbye to Therapeutic Drug Monitoring As We Know It? Gastroenterology 2022; 162:1831-1832. [PMID: 35364063 DOI: 10.1053/j.gastro.2022.03.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 03/25/2022] [Indexed: 02/03/2023]
Affiliation(s)
- Brian Bressler
- University of British Columbia, Vancouver, British Columbia, Canada.
| | - A Hillary Steinhart
- Mount Sinai Hospital Inflammatory Bowel Disease Centre, University of Toronto, Toronto, Ontario, Canada
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Smith PJ, Critchley L, Storey D, Gregg B, Stenson J, Kneebone A, Rimmer T, Burke S, Hussain S, Yi Teoh W, Vazeille S, Serna S, Steel A, Derbyshire E, Collins P, Dibb M, Flanagan P, Probert C, Verma AM, Subramanian S. Efficacy and Safety of Elective Switching from Intravenous to Subcutaneous Infliximab [CT-P13]: A Multicentre Cohort Study. J Crohns Colitis 2022; 16:1436-1446. [PMID: 35390141 PMCID: PMC9455786 DOI: 10.1093/ecco-jcc/jjac053] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/20/2022] [Accepted: 03/31/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND Intravenous [IV] infliximab is a well-established therapy for inflammatory bowel diseases [IBD] patients. A subcutaneous [SC] formulation of infliximab [CT-P13] has recently been shown to be as effective as IV infliximab after two doses of IV induction in a randomised trial, but there are no data to support elective switching of patients on maintenance IV infliximab therapy. We aimed to assess the effectiveness of an elective switching programme to SC CT-P13 in patients treated with IV infliximab. METHODS Patients on established maintenance IV infliximab, who switched to SC CT-P13, were included in this retrospective multicentre cohort study. Disease activity was monitored serially with the Harvey-Bradshaw Index [HBI] for Crohn's disease [CD] and the Simple Clinical Colitis Activity Index [SCCAI] for ulcerative colitis (UC) for up to 12 months at months 3, 6, and 12. Faecal calprotectin [FC] and C-reactive protein [CRP] were recorded at baseline and follow-up, if available. Infliximab trough levels were measured prior to switch and at months 3, 6, and 12 following switch. The primary outcome measure was treatment persistence at latest follow-up. Secondary outcome measures included infliximab pharmacokinetics [PK], safety, need for corticosteroid rescue therapy, and need for surgery. RESULTS We included 181 patients, of whom 115 [63.5%] had CD. The majority [72.4%] were on 8-weekly dosing of intravenous infliximab prior to switching, and more than half [59.1%] were on concomitant immunomodulatory therapy. The majority of patients (CD: 106, 92.2%; UC: 46, 76.7%; and IBD unclassified [IBD-U]: 5, 83.3%) were in clinical remission. Treatment persistence rate was high [n = 167, 92.3%] and only 14 patients [7.7%] stopped treatment during the follow-up period. There was no significant difference between baseline and repeat measurements at 3, 6, or 12 months for HBI, SCCAI, CRP, or FC. Of the total cohort, 25 patients (13.8%) had perianal CD. Of these, only two patients [8%] had worsening of perianal CD and required antibiotic therapy and further examination under anaesthesia [EUA]. Both these patients also switched back to intravenous infliximab. Median infliximab level increased from a baseline of 8.9 µg/dl [range 0.4-16] to 16.0 µg/dl [range 2.3-16, p <0.001] at 3 months. Serum levels stayed stable at 6 months [median 16 µg/dl, range 0.3-17.2] and 12 months [median 16 µg/dl, range 0.3-19.1, both p <0.001 compared with baseline]. Among the variables examined, only antibodies to infliximab [ATI] was associated with infliximab levels (odds ratio [OR] -13.369, 95% CI -15.405, -11.333, p <0.001]. A total of 14 patients [7.7%] developed ATI; of these, nine [64.3%] were on concomitant immunomodulatory therapy. Immunomodulatory therapy was not significantly associated with development of ATI [p = 0.15]. In a subset of patients receiving escalated IV infliximab dosing frequency prior to switching, no difference in treatment persistence was observed in patients receiving weekly versus alternate weekly SC CT-P13. Patient acceptance and satisfaction rates with SC CT-P13 were very high. CONCLUSIONS Among patients on IV infliximab maintenance therapy switched to SC CT-P13, we observed high treatment persistence rates and low rates of immunogenicity, with no change in clinical disease activity indices or biomarkers. Infliximab levels increased after switch to SC CT-P13, and only ATI was associated with serum infliximab levels. Patient acceptance and satisfaction rates were high with SC CT-P13.
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Affiliation(s)
- Philip J Smith
- Corresponding author: Dr Philip J. Smith, Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Prescot Street, Liverpool L7 8XP, UK.
| | - Lisa Critchley
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Daniel Storey
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Belle Gregg
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - June Stenson
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Andrew Kneebone
- Department of Gastroenterology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Tracy Rimmer
- Department of Gastroenterology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Stevena Burke
- Department of Gastroenterology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Shamas Hussain
- Liverpool School of Medicine, University of Liverpool, Liverpool, UK
| | - Wan Yi Teoh
- Liverpool School of Medicine, University of Liverpool, Liverpool, UK
| | - Stephan Vazeille
- Liverpool School of Medicine, University of Liverpool, Liverpool, UK
| | - Solange Serna
- Department of Digestive Diseases, Kettering General Hospital, Kettering, UK
| | - Alan Steel
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Edmund Derbyshire
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Paul Collins
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Martyn Dibb
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Paul Flanagan
- Department of Gastroenterology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Christopher Probert
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK,Molecular and Cellular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Ajay M Verma
- Department of Digestive Diseases, Kettering General Hospital, Kettering, UK
| | - Sreedhar Subramanian
- Department of Gastroenterology, Royal Liverpool Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK,Department of Gastroenterology, Addenbrookes Hospital, Cambridge, UK
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Irving PM, Gecse KB. Optimizing Therapies Using Therapeutic Drug Monitoring: Current Strategies and Future Perspectives. Gastroenterology 2022; 162:1512-1524. [PMID: 35167865 DOI: 10.1053/j.gastro.2022.02.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 01/07/2023]
Abstract
Therapeutic drug monitoring (TDM) has emerged as a strategy for treatment optimization in inflammatory bowel diseases to maximize benefit and to reach more stringent, objective end points. Optimal drug concentrations in inflammatory bowel disease vary according to treatment target, disease phenotype, inflammatory burden, and timing of sampling during the treatment cycle. This review provides an update on TDM with biologic and oral small molecules, evaluates the role of reactive vs proactive TDM, and identifies the gaps in current evidence. In the future, adaptations to how we use TDM may contribute further to the goal of personalized treatment in patients with IBD.
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Affiliation(s)
- Peter M Irving
- IBD Unit, Department of Gastroenterology, Guy's and St Thomas' Hospital, London, United Kingdom; School of Immunology and Microbial Sciences, King's College London, London, United Kingdom.
| | - Krisztina B Gecse
- Department of Gastroenterology and Hepatology, Amsterdam UMC, Amsterdam, the Netherlands
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Zhang J, Hu L, Shao H. Research Progress on Quantification Methods of Drug Concentration of Monoclonal Antibodies. CURR PHARM ANAL 2022. [DOI: 10.2174/1573412918666220329110712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
With the development of monoclonal antibodies (mAbs) from the first generation of mice to the fourth generation of human origin, the efficacy and safety in the treatment of many diseases have been continuously improved. MAbs have been widely used in the treatment of cancer, chronic inflammatory diseases, and so on. However, the treatment response of mAbs varies greatly among individuals, and drug exposure may be affected by a variety of physiological and pathological factors, such as combined use of drugs and progression of disease. Therefore, studies tend to recommend therapeutic drug monitoring and individualized treatment strategies.
Objective:
In this paper, the commonly used methods of quantification of monoclonal antibodies were reviewed, especially liquid chromatography- mass spectrometry (LC-MS/MS) and enzyme-linked immunosorbent assay (ELISA), to provide technical support for therapeutic drug detection and individualize dosing for patients.
Conclusion:
For patients achieving mAbs treatment, it is necessary to carry out therapeutic drug monitoring and take it as a routine monitoring index. We recommend that for pharmaceutical laboratories in hospitals, establishing an appropriate assay formats, such as ELISA and LC-MS/MS is critical to determine drug concentration and antidrug antibody (ADA) for mAbs.
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Affiliation(s)
- Jinlu Zhang
- School of Medicine, Southeast University, Nanjing, China
| | - Linlin Hu
- Office of Medication Clinical Institution, Zhongda Hospital, Southeast University, Nanjing, China;
- Department of Pharmacy, Zhongda Hospital, Southeast University, Nanjing, China
| | - Hua Shao
- Department of Pharmacy, Zhongda Hospital, Southeast University, Nanjing, China
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Intermittent Appearance of Antibodies to Infliximab Is Not Associated With Reduced Efficacy in Patients With Inflammatory Bowel Diseases. J Clin Gastroenterol 2022; 56:e47-e51. [PMID: 33252556 DOI: 10.1097/mcg.0000000000001469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 10/13/2020] [Indexed: 12/10/2022]
Abstract
GOALS To assess the clinical significance of antibodies to infliximab (ATI) formation in patients with inflammatory bowel disease (IBD). BACKGROUND Infliximab therapy in patients with IBD is highly effective though up to 50% of patients lose response to infliximab. ATI formation occurs in 6% to 60% of patients on scheduled infliximab maintenance therapy. METHODS Infliximab trough levels and ATI at trough were prospectively determined in patients with IBD on maintenance infliximab therapy. Patients on infliximab maintenance therapy with at least 3 ATI measurements were included. Patients were divided into 2 groups: sustained negative (<1 µg/mL) ATI levels, and fluctuating ATI levels (at least 1 sample with ATI <1 and at least one >1 µg/mL). RESULTS Forty-eight patients with IBD with available clinical data and serum samples were included. 25 patients had sustained low ATI levels and 23 patients had fluctuating ATI levels. Both groups were similar in IBD subtype distribution (Crohn's disease in 73.9% and 60%), mean serum albumin levels (4.2 vs. 3.9 g/dL), and mean trough serum infliximab levels (3.3 vs. 4.6 µg/mL) in fluctuating ATI and low ATI groups, respectively. There were no significant differences in the rate of clinical response (64% vs. 76%) and mean serum C-reactive protein levels (9.4 vs. 8.5 mg/dL, ULN=5) in the fluctuating ATI and low ATI groups. Similar rates of clinical response in the fluctuating ATI and low ATI groups were observed in ulcerative colitis (33% vs. 40%) and Crohn's disease (76% vs. 100%). CONCLUSIONS The fluctuating pattern of appearance of ATI in patients with IBD was not associated with loss of clinical response or a rise in C-reactive protein. The authors suggest that in clinical decision making, only sustained appearance of ATI should be considered as an adverse therapeutic factor.
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Bots SJ, Parker CE, Brandse JF, Löwenberg M, Feagan BG, Sandborn WJ, Jairath V, D'Haens G, Vande Casteele N. Anti-Drug Antibody Formation Against Biologic Agents in Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis. BioDrugs 2021; 35:715-733. [PMID: 34797516 PMCID: PMC9826743 DOI: 10.1007/s40259-021-00507-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2021] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND AIMS Immunogenicity with formation of anti-drug antibodies (ADA) to biologics is an important reason for treatment failure in inflammatory bowel disease (IBD). Our aim was to assess the rate of ADA, the effect of combination therapy with immunomodulators on ADA and the influence of ADA on efficacy and safety of biologics for IBD treatment. METHODS MEDLINE, Embase and Cochrane Central Register of Controlled Trials (CENTRAL) were searched from inception to April 2020 for trials of biologics that assessed immunogenicity. The overall certainty of evidence was evaluated using Grading of Recommendations, Assessment, Development and Evaluations (GRADE). The primary outcome was rate of ADA. Secondary outcomes included efficacy and safety outcomes among patients with detectable versus undetectable ADA. For dichotomous outcomes, pooled risk ratios (RR) and 95% confidence intervals (CI) were calculated. RESULTS Data from 68 studies were analyzed and 33 studies (5850 patients) were included in the meta-analysis. Pooled ADA rates for biologic monotherapy were 28.0% for infliximab, 7.5% for adalimumab, 3.8% for golimumab, 10.9% for certolizumab, 6.2% for ustekinumab and 16.0% for natalizumab. Pooled ADA rates were 8.4% for vedolizumab and 5.0% for etrolizumab for combo- and monotherapy combined. In all biologics, ADA rates were underestimated by use of drug-sensitive ADA assays and higher dose and/or frequency. ADA rate was significantly reduced in patients treated with combination therapy for infliximab (RR 0.52; 95% CI 0.44-0.62), adalimumab (RR 0.31; 95% CI 0.14-0.69), golimumab (RR 0.29; 95% CI 0.10-0.83), certolizumab pegol (RR 0.30; 95% CI 0.14-0.67) and natalizumab (RR 0.20; 95% CI 0.11-0. 39). ADA to infliximab were associated with lower clinical response rates (RR 0.75; 95% CI 0.61-0.91) and higher rates of infusion reactions (RR 2.36; 95% CI 1.85-3.01). CONCLUSIONS Differences in analytical methods to detect ADA hamper comparison of true ADA rates across biologics in IBD. Use of combination therapy with immunomodulators appeared to reduce ADA positivity for most biologics. For infliximab, ADA were associated with reduced drug efficacy and increased adverse events.
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Affiliation(s)
- Steven J Bots
- Amsterdam University Medical Center, Amsterdam, The Netherlands
| | | | | | - Mark Löwenberg
- Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Brian G Feagan
- Alimentiv Inc, London, ON, Canada
- Department of Medicine, Western University, London, ON, Canada
- Department of Epidemiology and Biostatistics, Western University, London, ON, Canada
| | - William J Sandborn
- Division of Gastroenterology, Department of Medicine, School of Medicine, IBD Center, University of California San Diego, 9500 Gilman Drive #0956, La Jolla, CA, 92093, USA
- Alimentiv Inc, London, ON, Canada
| | - Vipul Jairath
- Alimentiv Inc, London, ON, Canada
- Department of Medicine, Western University, London, ON, Canada
- Department of Epidemiology and Biostatistics, Western University, London, ON, Canada
| | - Geert D'Haens
- Amsterdam University Medical Center, Amsterdam, The Netherlands
- Alimentiv Inc, London, ON, Canada
| | - Niels Vande Casteele
- Division of Gastroenterology, Department of Medicine, School of Medicine, IBD Center, University of California San Diego, 9500 Gilman Drive #0956, La Jolla, CA, 92093, USA.
- Alimentiv Inc, London, ON, Canada.
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Wu JF. Therapeutic Drug Monitoring of Biologics for Patients with Inflammatory Bowel Diseases: How, When, and for Whom? Gut Liver 2021; 16:515-524. [PMID: 34670875 PMCID: PMC9289828 DOI: 10.5009/gnl210262] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/08/2021] [Accepted: 08/03/2021] [Indexed: 11/09/2022] Open
Abstract
During the past decade, we have entered an era of biologics for the treatment of Crohn’s disease and ulcerative colitis. The therapeutic goal of inflammatory bowel disease (IBD) management has evolved from symptom control and clinical remission to mucosal healing or even deep remission. Histological remission for ulcerative colitis and transmural healing of Crohn’s disease are potential future goals. With the adoption of the treat-to-target concept, and given the need for tight control of IBD activity, therapeutic drug monitoring (TDM) is an important element of precision medicine. TDM involves the measurement of serum biologics and anti-drug antibodies levels, to confirm whether the right drug with the right dosage was prescribed to reach the right serum levels. TDM may help clinicians adjust biologics based on objective biomarkers instead of using empirical dosage escalation or making symptom-based therapeutic adjustments. Well-established reactive TDM algorithms have been proposed, and emerging evidence supports the clinical application of a proactive TDM strategy to enhance the duration of effective biologics and improve clinical outcomes. Recently, the proactive TDM strategy was shown to avoid the secondary loss of response to biologics, and improve long-term clinical outcomes in IBD patients. This review summarizes data from trials, and practice guidelines, on the clinical application of proactive and reactive TDM strategies for the daily care of biologic-treated IBD patients.
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Affiliation(s)
- Jia-Feng Wu
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan.,Taiwan Society of Inflammatory Bowel Disease, Taipei, Taiwan
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Albader F, Golovics PA, Gonczi L, Bessissow T, Afif W, Lakatos PL. Therapeutic drug monitoring in inflammatory bowel disease: The dawn of reactive monitoring. World J Gastroenterol 2021; 27:6231-6247. [PMID: 34712029 PMCID: PMC8515794 DOI: 10.3748/wjg.v27.i37.6231] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/08/2021] [Accepted: 08/31/2021] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic condition that significantly affects the quality of life of its patients. Biologic drugs have been the mainstay treatment in the management of IBD patients but despite their significant contribution, there remains a proportion of patients that do not respond or lose response to treatment. Therapeutic drug monitoring (TDM) involves measuring levels of serum drug concentrations and anti-drug antibodies. TDM of biologic drugs initially emerged to understand treatment failure in other immune mediated inflammatory diseases. This was then introduced in IBD to rationalize primary non-response or secondary loss of response, given that low serum drug concentrations or the formation of anti-drug antibodies are variably associated with treatment failure. The aim of this narrative review is to provide an overview regarding the current use of TDM in clinical practice and to present the evidence available regarding its use in both proactive and reactive clinical settings in preventing and managing treatment failure. This review also presents the existing evidence regarding the association of various clinical outcomes with specific thresholds of drug concentrations, in everyday practice. A narrative review of published articles and conference abstracts regarding the use of TDM in IBD management, through an electronic search using PubMed and ScienceDirect. TDM has proven to be superior and more cost effective in guiding management of patients with treatment failure compared to empiric dose escalation or change in treatment. Despite a trend towards an association between clinical outcomes and drug concentrations, proactive TDM based strategies have not been shown to achieve clear benefit in long-term outcomes. In the clinical setting, TDM has proven to be useful in managing IBD patients, and its use in the reactive setting, as an additional tool to help manage patients with treatment failure, is being promoted as newer guidelines and consensus groups implement TDM as part of the management plan.
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Affiliation(s)
- Farah Albader
- Department of Internal Medicine, McGill University, Montreal H3G1A4, Quebec, Canada
| | - Petra Anna Golovics
- Division of Gastroenterology, Hungarian Defence Forces, Medical Centre, Budapest H-1062, Hungary
- Division of Gastroenterology, McGill University, Montreal H3G 1A4, Quebec, Canada
| | - Lorant Gonczi
- First Department of Medicine, Semmelweis University, Budapest H-1083, Hungary
| | - Talat Bessissow
- Division of Gastroenterology, McGill University Health Centre, Montreal H3G 1A4, Quebec, Canada
| | - Waqqas Afif
- Division of Gastroenterology, McGill University, Montreal H3G 1A4, Quebec, Canada
| | - Peter Laszlo Lakatos
- Division of Gastroenterology, McGill University, Montreal H3G 1A4, Quebec, Canada
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38
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Faelens R, Wang Z, Bouillon T, Declerck P, Ferrante M, Vermeire S, Dreesen E. Model-Informed Precision Dosing during Infliximab Induction Therapy Reduces Variability in Exposure and Endoscopic Improvement between Patients with Ulcerative Colitis. Pharmaceutics 2021; 13:pharmaceutics13101623. [PMID: 34683916 PMCID: PMC8537637 DOI: 10.3390/pharmaceutics13101623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 12/24/2022] Open
Abstract
Model-informed precision dosing (MIPD) may be a solution to therapeutic failure of infliximab for patients with ulcerative colitis (UC), as underexposure could be avoided, and the probability of endoscopic improvement (pEI; Mayo endoscopic subscore ≤ 1) could be optimized. To investigate in silico whether this claim has merit, four induction dosing regimens were simulated: 5 mg/kg (label dosing), 10 mg/kg, covariate-based MIPD (fat-free mass, corticosteroid use, and presence of extensive colitis at baseline), and concentration-based MIPD (based on the trough concentration at day 14). Covariate- and concentration-based MIPD were chosen to target the same median area under the infliximab concentration-time curve up to endoscopy at day 84 (AUCd84), as was predicted from 10 mg/kg dosing. Dosing at 5 mg/kg resulted in a mean ± standard deviation pEI of 55.7 ± 9.0%. Increasing the dose to 10 mg/kg was predicted to improve pEI to 65.1 ± 6.1%. Covariate-based MIPD reduced variability in exposure and pEI (65.1 ± 5.5%). Concentration-based MIPD decreased variability further (66.0 ± 3.9%) but did so at an increased average dose of 2293 mg per patient, as compared to 2168 mg for 10 mg/kg dosing. Mean pEI remained unchanged between 10 mg/kg dosing and MIPD, since the same median AUCd84 was targeted. In conclusion, quantitative simulations predict MIPD will reduce variability in exposure and pEI between patients with UC during infliximab induction therapy.
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Affiliation(s)
- Ruben Faelens
- Department of Pharmaceutical and Pharmacological Sciences, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; (R.F.); (Z.W.); (T.B.); (P.D.)
| | - Zhigang Wang
- Department of Pharmaceutical and Pharmacological Sciences, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; (R.F.); (Z.W.); (T.B.); (P.D.)
| | - Thomas Bouillon
- Department of Pharmaceutical and Pharmacological Sciences, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; (R.F.); (Z.W.); (T.B.); (P.D.)
| | - Paul Declerck
- Department of Pharmaceutical and Pharmacological Sciences, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; (R.F.); (Z.W.); (T.B.); (P.D.)
| | - Marc Ferrante
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, 3000 Leuven, Belgium; (M.F.); (S.V.)
- Department of Chronic Diseases and Metabolism, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Séverine Vermeire
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, 3000 Leuven, Belgium; (M.F.); (S.V.)
- Department of Chronic Diseases and Metabolism, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Erwin Dreesen
- Department of Pharmaceutical and Pharmacological Sciences, Katholieke Universiteit Leuven, 3000 Leuven, Belgium; (R.F.); (Z.W.); (T.B.); (P.D.)
- Correspondence: ; Tel.: +32-16-37-27-53
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Rosiou K, Selinger CP. Acute severe ulcerative colitis: management advice for internal medicine and emergency physicians. Intern Emerg Med 2021; 16:1433-1442. [PMID: 33754227 PMCID: PMC8354863 DOI: 10.1007/s11739-021-02704-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/08/2021] [Indexed: 02/06/2023]
Abstract
Acute severe ulcerative colitis is a medical emergency that warrants in-patient management. This is best served within a multidisciplinary team setting in specialised centres or with expert consultation. Intravenous corticosteroids remain the cornerstone in the management of ASUC and should be initiated promptly, along with general management measures and close monitoring of patients. Unfortunately, one-third of patients will fail to respond to steroids. Response to intravenous corticosteroid therapy needs to be assessed on the third day and rescue therapies, including cyclosporine and infliximab, should be offered to patients not responding. Choice of rescue therapy depends on experience, drug availability and factors associated with each individual patient, such as comorbidities, previous medications or contra-indications to therapy. Patients who have not responded within 7 days to rescue therapy must be considered for surgery. Surgery is a treatment option in ASUC and should not be delayed in cases of failure of medical therapy, because such delays increase surgical morbidity and mortality. This review summarises the current management of acute severe ulcerative colitis and discusses potential future developments.
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Affiliation(s)
- Konstantina Rosiou
- Leeds Gastroenterology Institute, Leeds Teaching Hospitals NHS Trust, St James University Hospital, Bexley Wing, Leeds, LS9 7TF, UK
| | - Christian Philipp Selinger
- Leeds Gastroenterology Institute, Leeds Teaching Hospitals NHS Trust, St James University Hospital, Bexley Wing, Leeds, LS9 7TF, UK.
- University of Leeds, Leeds, UK.
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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: 2] [Impact Index Per Article: 0.7] [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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The Role of Biomarkers in Surgery for Ulcerative Colitis: A Review. J Clin Med 2021; 10:jcm10153362. [PMID: 34362144 PMCID: PMC8348722 DOI: 10.3390/jcm10153362] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/25/2021] [Accepted: 07/28/2021] [Indexed: 12/19/2022] Open
Abstract
Ulcerative colitis (UC) is an inflammatory condition that generally affects the rectum and extends proximally into the colon in a continuous, distal-to-proximal pattern. Surgical resection (total proctocolectomy) is the only cure for UC and is often necessary in managing complicated or refractory disease. However, recent advances in biologically targeted therapies have resulted in improved disease control, and surgery is required in only a fraction of cases. This ever-increasing array of options for medical management has added complexity to surgical decision-making. In some circumstances, the added time required to ensure failure of medical therapy can delay colectomy in patients who will ultimately need it. Indeed, many patients with severe disease undergo trials of multiple medical therapies prior to considering surgery. In severe cases of UC, continued medical management has been associated with a delay to surgical intervention and higher rates of morbidity and mortality. Biomarkers represent a burgeoning field of research, particularly in inflammatory bowel disease and cancer. This review seeks to highlight the different possible settings for surgery in UC and the role various biomarkers might play in each.
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Surface plasmon resonance unveils important pitfalls of enzyme-linked immunoassay for the detection of anti-infliximab antibodies in patients' sera. Sci Rep 2021; 11:14976. [PMID: 34294782 PMCID: PMC8298394 DOI: 10.1038/s41598-021-94431-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/08/2021] [Indexed: 02/08/2023] Open
Abstract
Measurements of serum concentrations of therapeutic antibodies and anti-drug antibodies (ADA) can support clinical decisions for the management of non-responders, optimizing the therapy. In the present study we compared the results obtained by classical ELISA and a recently proposed surface plasmon resonance (SPR)-based immunoassay, in 76 patients receiving infliximab for inflammatory bowel diseases. The two methods indicated very similar serum concentrations of the drug, but there were striking differences as regards ADA. All the sera showing ADA by ELISA (14) also showed ADA by SPR, but the absolute amounts were different, being 7–490 times higher with SPR, with no correlation. Eight patients showed ADA only with SPR, and these ADA had significantly faster dissociation rate constants than those detectable by both SPR and ELISA. The underestimation, or the lack of detection, of ADA by ELISA is likely to reflect the long incubation steps which favor dissociation of the patient’s low-affinity ADA, while the commercial, high-affinity anti-infliximab antibodies used for the calibration curve do not dissociate. This problem is less important with SPR, which monitors binding in real time. The possibility offered by SPR to detect ADA in patients otherwise considered ADA-negative by ELISA could have important implications for clinicians.
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Chen L, Xu CJ, Wu W, Ding BJ, Liu ZJ. Anti-TNF and immunosuppressive combination therapy is preferential to inducing clinical remission in patients with active inflammatory bowel disease: A systemic review and meta-analysis. J Dig Dis 2021; 22:408-418. [PMID: 34048629 DOI: 10.1111/1751-2980.13026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/12/2021] [Accepted: 05/26/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To compare the efficacy and safety of a combination therapy of biologics and immunosuppressants with biological monotherapy in inflammatory bowel disease (IBD) in a systematic review and meta-analysis. METHODS Eligible randomized controlled trials (RCTs) on the comparison of the efficacy and safety of biologics and immunomodulators with biological monotherapy were identified from the EMBASE, PubMed and the Cochrane Library databases published up to 1 May 2020. Raw data were extracted, pooled relative risk (RR) and 95% confidence interval (CI) was calculated, the fixed-effect and inverse variance models were used. Funnel plots were performed to analyze publication bias. RESULTS Twelve RCTs were eligible for analysis. Overall, there was statistically a benefit for combination treatment over biologic monotherapy (IFX/ADA) in inducing clinical remission and preventing relapse in patients with IBD (RR 0.89, 95% CI 0.80-0.98). Moreover, the combination therapy was superior to biological monotherapy for active CD (RR 0.83, 95% CI 0.73-0.94). Also, there were significant benefits for combination therapy in the subgroup treated with infliximab (IFX) (RR 0.83, 95% CI 0.70-0.97). CONCLUSIONS Combination therapy has slight benefits in inducing clinical remission in active CD compared with biological monotherapy. Patients with IBD who receive therapy with IFX and immunomodulator also have a mild advantage in comparison with those treated with IFX monotherapy.
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Affiliation(s)
- Liang Chen
- Department of Gastroenterology, The First People's Hospital of Shangqiu City, Xinxiang Medical University, Shangqiu, Henan Province, China.,Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Chun Jin Xu
- Department of Gastroenterology, The First People's Hospital of Shangqiu City, Xinxiang Medical University, Shangqiu, Henan Province, China
| | - Wei Wu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Bai Jing Ding
- Department of Gastroenterology, Wuhu First People's Hospital, Wuhu, Anhui Province, China
| | - Zhan Ju Liu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
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Bqain M, Efimov A, Baker D, Kang AS. Immunogenicity of biologics used in the treatment of inflammatory bowel disease: A review. Hum Antibodies 2021; 29:225-235. [PMID: 34151784 DOI: 10.3233/hab-210449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE OF THE REVIEW Here we critically evaluate the literature on immunotherapy failure in inflammatory bowel disease patients. In particular anti-drug antibody production, and subsequently loss of response as the primary cause of immunotherapy failure in IBD patients. The benefits of shifting from the "standard" empirical dose escalation approach to therapeutic drug monitoring with anti-TNFα therapy is explored. RECENT FINDINGS The American Gastroenterology Association and British Society of Gastroenterology both currently recommend the use of reactive therapeutic drug monitoring to guide treatment, following loss of response in inflammatory bowel disease patients with active disease. However, further research is required to prove the efficacy of a proactive therapeutic drug monitoring approach alone in remitted IBD patients. SUMMARY A combination of personalised monitoring approach for anti-drug antibodies and therapeutic drug monitoring could provide beneficial treatment outcome for people with inflammatory bowel disease by predicting drug failure prior to clinical symptoms and allowing timely switching to an alternative drug.
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Affiliation(s)
- Mariam Bqain
- Centre for Oral Immunobiology and Regenerative Medicine, Dental Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Alex Efimov
- Camstech Ltd, Campus Technology Hub, Daresbury Laboratory, Science and Technology Facilities Council, Sci-Tech Daresbury, Keckwick Lane, Daresbury, UK
| | - David Baker
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Angray S Kang
- Centre for Oral Immunobiology and Regenerative Medicine, Dental Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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Pękala A, Filip R, Aebisher D. Anti-Drug Antibodies in Patients with Inflammatory Bowel Diseases Treated with Biosimilar Infliximab: A Prospective Cohort Study. J Clin Med 2021; 10:2653. [PMID: 34208676 PMCID: PMC8235171 DOI: 10.3390/jcm10122653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 01/14/2023] Open
Abstract
Reports of the prevalence of antibodies to infliximab (anti-drug antibodies, ADA) are inconsistent due in part to the various assay formats used to monitor immunogenicity in the clinic and under clinical trial settings. This study aimed to determine the frequency of ADA in patients with inflammatory bowel disease (IBD) during induction and maintenance therapy with biosimilar infliximab (CT-P13) using the ELISA (enzyme-linked immunosorbent assay) method. In this prospective single-center study, we analyzed the incidence of ADA and the relationship between the presence of ADA and the following variables: gender, type of disease, immunosuppressive therapy used, and duration of treatment. A total of 84 patients with IBD received CT-P13 and were followed up for an average of 7 months. We found ADA in 50% of the patients with undetectable levels of the drug. The percentage of persons with antibodies detected during induction treatment was 11.3% compared to 9.6% during maintenance therapy. The analysis showed no relationship between response to treatment and antibody titers (p = 0.381). The study showed a statistically significant relationship between undetectable levels of CT-P13 and the presence of ADA at week 6 of therapy (i.e., ADA were detected in all the patients with undetectable levels of CT-P13). Patients with IBD and undetectable levels of CT-P13 before administration of the third induction dose were at high risk of the presence of anti-drug antibodies as well as primary non-response.
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Affiliation(s)
- Anna Pękala
- Department of Gastroenterology, IBD Unit of Clinical Hospital 2, Lwowska 60 Str., 35-301 Rzeszow, Poland;
| | - Rafał Filip
- Department of Gastroenterology, IBD Unit of Clinical Hospital 2, Lwowska 60 Str., 35-301 Rzeszow, Poland;
- Faculty of Medicine, University of Rzeszow, Kopisto 2A Str., 35-315 Rzeszow, Poland
| | - David Aebisher
- Department of Photomedicine and Physical Chemistry, Faculty of Medicine, University of Rzeszow, Warzywna 1A Str., 35-310 Rzeszow, Poland;
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Guberna L, Nyssen OP, Chaparro M, Gisbert JP. Frequency and Effectiveness of Empirical Anti-TNF Dose Intensification in Inflammatory Bowel Disease: Systematic Review with Meta-Analysis. J Clin Med 2021; 10:2132. [PMID: 34069295 PMCID: PMC8156358 DOI: 10.3390/jcm10102132] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/07/2021] [Accepted: 05/07/2021] [Indexed: 02/06/2023] Open
Abstract
Loss of response to antitumor necrosis factor (anti-TNF) therapies in inflammatory bowel disease occurs in a high proportion of patients. Our aim was to evaluate the loss of response to anti-TNF therapy, considered as the need for dose intensification (DI), DI effectiveness and the possible variables influencing its requirements. Bibliographical searches were performed. SELECTION prospective and retrospective studies assessing DI in Crohn's disease and ulcerative colitis patients treated for at least 12 weeks with an anti-TNF drug. EXCLUSION CRITERIA studies using anti-TNF as a prophylaxis for the postoperative recurrence in Crohn's disease or those where DI was based on therapeutic drug monitoring. DATA SYNTHESIS effectiveness by intention-to-treat (random effects model). Data were stratified by medical condition (ulcerative colitis vs. Crohn's disease), anti-TNF drug and follow-up. RESULTS One hundred and seventy-three studies (33,241 patients) were included. Overall rate of the DI requirement after 12 months was 28% (95% CI 24-32, I2 = 96%, 41 studies) in naïve patients and 39% (95% CI 31-47, I2 = 86%, 18 studies) in non-naïve patients. The DI requirement rate was higher both in those with prior anti-TNF exposure (p = 0.01) and with ulcerative colitis (p = 0.02). The DI requirement rate in naïve patients after 36 months was 35% (95% CI 28-43%; I2 = 98%; 18 studies). The overall short-term response and remission rates of empirical DI in naïve patients were 63% (95% CI 48-78%; I2 = 99%; 32 studies) and 48% (95% CI: 39-58%; I2 = 92%; 25 studies), respectively. The loss of response to anti-TNF agents-and, consequently, DI-occurred frequently in inflammatory bowel disease (approximately in one-fourth at one year and in one-third at 3 years). Empirical DI was a relatively effective therapeutic option.
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Affiliation(s)
- Laura Guberna
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Universidad Autónoma de Madrid (UAM), 28006 Madrid, Spain; (L.G.); (O.P.N.); (M.C.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
| | - Olga P. Nyssen
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Universidad Autónoma de Madrid (UAM), 28006 Madrid, Spain; (L.G.); (O.P.N.); (M.C.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
| | - María Chaparro
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Universidad Autónoma de Madrid (UAM), 28006 Madrid, Spain; (L.G.); (O.P.N.); (M.C.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
| | - Javier P. Gisbert
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Universidad Autónoma de Madrid (UAM), 28006 Madrid, Spain; (L.G.); (O.P.N.); (M.C.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
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Quality Improvement Methodology Optimizes Infliximab Levels in Pediatric Patients with Inflammatory Bowel Disease. Pediatr Qual Saf 2021; 6:e400. [PMID: 33977189 PMCID: PMC8104299 DOI: 10.1097/pq9.0000000000000400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 10/23/2020] [Indexed: 12/21/2022] Open
Abstract
Supplemental Digital Content is available in the text. Achieving and maintaining target serum trough infliximab levels improves outcomes in children and young adults with inflammatory bowel disease. Our goal was to improve adherence to an infliximab therapy guideline. The primary aim was to increase the percentage of patients with infliximab levels ≥5 μg/mL and results checked in the last 12 months from 73% to ≥80% from July 2017 to January 2018.
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Predictors of Infliximab Trough Concentrations in Inflammatory Bowel Disease Patients Using a Repeated-Measures Design. Ther Drug Monit 2021; 42:102-110. [PMID: 31283556 DOI: 10.1097/ftd.0000000000000669] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIMS Treating patients based on a treat-to-trough approach has been shown to be a cost-effective strategy for inflammatory bowel disease (IBD) patients who have become unresponsive to infliximab (IFX). However, the documented evidence for this is limited, and some controversy remains regarding the use of routine proactive therapeutic drug monitoring (TDM). To support routine TDM of IFX and regimen optimization in IBD patients, more in-depth knowledge of the covariates that affect the pharmacokinetic (PK) variability of IFX is needed. The aim of this study was to identify the characteristics of the patient, disease, and treatments that influence IFX PK and exposure in our cohort of IBD patients using a repeated-measures design. METHODS We performed a prospective observational study of adult IBD patients who received IFX between July 2013 and March 2017. We obtained repeated IFX trough concentration (Cmin) measurements and implemented a previously described population pharmacokinetic model to estimate individual clearance (CL). From the individual primary parameters, the area under the curve (AUC), half-life (t1/2), and central elimination rate constant (K10) were estimated. We performed a repeated-measures analysis to evaluate whether patient characteristics, disease status, concomitant immunosuppressive therapy, and immunogenicity are associated with IFX Cmin and PK parameters. RESULTS We collected 429 Cmin measurements from 112 patients. The median of the Cmin values was 3.62 mg/L (1.47-6.02). Antibodies to IFX (ATI) were detected in 14 patients. The predicted median AUC was 28,421 mg/h/L (22,336-36,903). The median individual predicted CL, K10, and t1/2 values were 4.77 mL/kg/day (3.88-5.90), 0.09 days (0.08-0.12), and 12.22 days (9.49-14.87), respectively. IFX Cmin, AUC, CL, and K10 were significantly influenced by ATI and serum albumin concentrations. Moreover, body weight was significantly associated with AUC, CL, and K10. Patients receiving concurrent immunosuppressive therapy had higher Cmin and AUC values and lower CL and K10 values than those treated with IFX monotherapy. We also observed high intrapatient variability in Cmin values during the study period. CONCLUSIONS In this repeated-measures study in a population of IBD patients, we observed significant associations between ATI, serum albumin concentration, concomitant immunosuppressive therapy, body weight and gender, and IFX Cmin, and CL. The high PK variability observed in this study supports the need for proactive TDM to optimize the use of IFX as early as possible in IBD patients.
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Monoclonal Antibody Monitoring: Clinically Relevant Aspects, A Systematic Critical Review. Ther Drug Monit 2021; 42:45-56. [PMID: 31365482 DOI: 10.1097/ftd.0000000000000681] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Monoclonal antibody (mAb) therapy does not usually lead to a clinical response in all patients and resistance may increase over time after repeated mAb administration. This lack or loss of response to the treatment may originate from different and little-known epigenetic, biomolecular, or pathophysiological mechanisms, although an inadequate serum concentration is perhaps the most likely cause, even if not widely recognized and investigated yet. Patient factors that influence the pharmacokinetics (PK) of a mAb should be taken into account. Multiple analyses of patient-derived PK data have identified various factors influencing the clearance of mAbs. These factors include the presence of antidrug antibodies, low serum albumin, high serum levels of C-reactive protein, high body weight, and gender differences among others. The same clearance processes involved in systemic clearance after intravenous administration are also involved in local first-pass catabolism after subcutaneous administration of mAbs. Therapeutic drug monitoring has been proposed as a way to understand and respond to the variability in clinical response and remission. For both classes of mAbs with anti-inflammatory and antitumor effects, dose-guided optimization based on the measurement of serum concentrations in individual patients could be the next step for a personalized and targeted mAb therapy.
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Lee SD, Shivashankar R, Quirk D, Zhang H, Telliez JB, Andrews J, Marren A, Mukherjee A, Loftus EV. Therapeutic Drug Monitoring for Current and Investigational Inflammatory Bowel Disease Treatments. J Clin Gastroenterol 2021; 55:195-206. [PMID: 32740098 PMCID: PMC7960149 DOI: 10.1097/mcg.0000000000001396] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This article reviews therapeutic drug monitoring (TDM) use for current inflammatory bowel disease (IBD) treatments. IBD comprises Crohn's disease and ulcerative colitis-chronic gastrointestinal inflammatory disorders. Treatment options for moderate to severe IBD include thiopurines; methotrexate; biologic agents targeting tumor necrosis factor, α4β7 integrin or interleukins 12 and 23; and Janus kinase inhibitors. TDM is recommended to guide treatment decisions for some of these agents. Published literature concerning TDM for IBD treatments was reviewed. S.D.L., R.S., and E.V.L. drew on their clinical experiences. Polymorphisms resulting in altered enzymatic activity inactivating thiopurine metabolites can lead to myelotoxicity and hepatotoxicity. Increased elimination of biologic agents can result from immunogenicity or higher disease activity, leading to low drug concentration and consequent nonresponse or loss of response. TDM may aid treatment and dose decisions for individual patients, based on monitoring metabolite levels for thiopurines, or serum drug trough concentration and antidrug antibody levels for biologic agents. Challenges remain around TDM implementation in IBD, including the lack of uniform assay methods and guidance for interpreting results. The Janus kinase inhibitor tofacitinib is not impacted by enzyme polymorphisms or disease activity, and is not expected to stimulate the formation of neutralizing antidrug antibodies. TDM is associated with implementation challenges, despite the recommendation of its use for guiding many IBD treatments. Newer small molecules with less susceptibility to patient variability factors may fulfill the unmet need of treatment options that do not require TDM, although further study is required to confirm this.
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Affiliation(s)
- Scott D. Lee
- Digestive Health Center, University of Washington Medical Center, Seattle, WA
| | - Raina Shivashankar
- Division of Gastroenterology and Hepatology, Thomas Jefferson University, Philadelphia
| | | | | | | | | | | | | | - Edward V. Loftus
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
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