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Malakar S, Sutaoney P, Madhyastha H, Shah K, Chauhan NS, Banerjee P. Understanding gut microbiome-based machine learning platforms: A review on therapeutic approaches using deep learning. Chem Biol Drug Des 2024; 103:e14505. [PMID: 38491814 DOI: 10.1111/cbdd.14505] [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: 10/08/2023] [Revised: 02/21/2024] [Accepted: 03/04/2024] [Indexed: 03/18/2024]
Abstract
Human beings possess trillions of microbial cells in a symbiotic relationship. This relationship benefits both partners for a long time. The gut microbiota helps in many bodily functions from harvesting energy from digested food to strengthening biochemical barriers of the gut and intestine. But the changes in microbiota composition and bacteria that can enter the gastrointestinal tract can cause infection. Several approaches like culture-independent techniques such as high-throughput and meta-omics projects targeting 16S ribosomal RNA (rRNA) sequencing are popular methods to investigate the composition of the human gastrointestinal tract microbiota and taxonomically characterizing microbial communities. The microbiota conformation and diversity should be provided by whole-genome shotgun metagenomic sequencing of site-specific community DNA associating genome mapping, gene inventory, and metabolic remodelling and reformation, to ease the functional study of human microbiota. Preliminary examination of the therapeutic potency for dysbiosis-associated diseases permits investigation of pharmacokinetic-pharmacodynamic changes in microbial communities for escalation of treatment and dosage plan. Gut microbiome study is an integration of metagenomics which has influenced the field in the last two decades. And the incorporation of artificial intelligence and deep learning through "omics-based" methods and microfluidic evaluation enhanced the capability of identification of thousands of microbes.
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Affiliation(s)
- Shilpa Malakar
- Department of Microbiology, Kalinga University, Raipur, Chhattisgarh, India
| | - Priya Sutaoney
- Department of Microbiology, Kalinga University, Raipur, Chhattisgarh, India
| | - Harishkumar Madhyastha
- Department of Cardiovascular Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Kamal Shah
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India
| | - Nagendra Singh Chauhan
- Department of Medical education, Drugs Testing Laboratory Avam Anusandhan Kendra, Raipur, Chhattisgarh, India
| | - Paromita Banerjee
- Department of Cardiology, AIIMS Rishikesh, Rishikesh, Uttarkhand, India
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Sands BE, Schreiber S, Blumenstein I, Chiorean MV, Ungaro RC, Rubin DT. Clinician's Guide to Using Ozanimod for the Treatment of Ulcerative Colitis. J Crohns Colitis 2023; 17:2012-2025. [PMID: 37436357 PMCID: PMC10798866 DOI: 10.1093/ecco-jcc/jjad112] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Indexed: 07/13/2023]
Abstract
The emergence of advanced therapies [eg, biologics, Janus kinase inhibitors] over the past few decades has revolutionised the treatment of ulcerative colitis. However, the limitations of these therapies leave an unmet need for safer and more effective or convenient treatment options. There is growing interest in the development of novel oral small molecule therapies for the treatment of ulcerative colitis. Ozanimod is an oral small molecule therapy that is approved in the USA, the European Union, and other countries as the first sphingosine 1-phosphate receptor modulator for the treatment of moderately to severely active ulcerative colitis in adults. This review provides guidance for ozanimod use for the treatment of ulcerative colitis, based on the prescribing information, clinical trial and real-world data, and the authors' clinical experiences. This guidance outlines patient characteristics to consider when deciding if ozanimod treatment is suitable and describes how to educate patients on risks and best practices. It also details the nature and frequency of monitoring during treatment, which should be adapted to the individual patient based on pre-existing risk factors and events that possibly occur during treatment. This review also provides insights into the patient characteristics and clinical scenarios best suited for ozanimod treatment, based on its efficacy, safety profile, and risks compared with other therapies.
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Affiliation(s)
- Bruce E Sands
- Dr Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Stefan Schreiber
- Department of Internal Medicine I, University Hospital Schleswig-Holstein, Kiel University, Kiel, Germany
| | - Irina Blumenstein
- Medical Clinic 1, Department of Gastroenterology, Hepatology and Clinical Nutrition, Goethe University Hospital, Frankfurt, Germany
| | - Michael V Chiorean
- Department of Gastroenterology, Swedish Medical Center, Seattle, WA, USA
| | - Ryan C Ungaro
- Dr Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - David T Rubin
- Section of Gastroenterology, Hepatology & Nutrition, University of Chicago Medicine Inflammatory Bowel Disease Center, Chicago, IL, USA
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3
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Kim YZ, Kang B, Kim ES, Kwon Y, Choe YH, Kim MJ. Efficacy of Combined Initial Treatment of Methotrexate with Infliximab in Pediatric Crohn's Disease: A Pilot Study. Biomedicines 2023; 11:2575. [PMID: 37761016 PMCID: PMC10526834 DOI: 10.3390/biomedicines11092575] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/18/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND The combination of antitumor necrosis factor-alpha (TNF-α) agents with immunomodulators (IMMs) is a common treatment for pediatric Crohn's disease (CD). Although methotrexate (MTX) can be a first-line medication as an IMM, most clinicians in real-life practice, especially in South Korea, are more familiar with thiopurines. This study aimed to compare the efficacy and immunogenicity of MTX and azathioprine (AZA) as concurrent therapies for pediatric CD. METHODS In this pilot study, 29 newly diagnosed pediatric patients with moderate-to-severe CD were randomized to receive either MTX (n = 15) (15 mg/body surface area (BSA) per week) or oral AZA (n = 14) (0.5 mg/kg per day) in combination with Infliximab (IFX). The primary outcomes were the proportion of patients in endoscopic, biochemical, and transmural remission after 14 and 54 weeks of IFX therapy. The trough levels (TLs) of IFX and anti-drug antibody (ADA) levels were also compared. RESULTS Among the 29 patients, there were no significant differences in the biochemical (p = 1.0 at week 14, p = 0.45 at week 54), endoscopic (p = 0.968 at week 14, p = 0.05 at week 54), or transmural (p = 0.103 at week 54) remission rates between the two medications during the concurrent therapy. Additionally, the trends in the IFX trough and ADA levels over time during the treatments were similar for both medications, with no significant differences (p = 0.686, p = 0.389, respectively). CONCLUSION The MTX showed comparable efficacy to the AZA in pediatric CD patients with moderate-to-severe disease. This effectively maintained adequate IFX levels and reduced ADA production. Therefore, although additional large-scale clinical trials are needed, this study demonstrated that either MTX or AZA can be selected as IMMs in the concurrent treatment of pediatric CD, depending on individual medical institutions' circumstances.
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Affiliation(s)
- Yoon-Zi Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Ben Kang
- Department of Pediatrics, School of Medicine, Kyungpook National University Chilgok Hospital, Daegu 41944, Republic of Korea
| | - Eun-Sil Kim
- Department of Pediatrics, Kangbuk Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 03181, Republic of Korea
| | - Yiyoung Kwon
- Department of Pediatrics, Inha University Hospital, Inha University School of Medicine, Incheon 22188, Republic of Korea;
| | - Yon-Ho Choe
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | - Mi-Jin Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
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Mora Y, Villegas C, Mora YM, Moreno N. TPMT gene polymorphisms (c.238G>C, c.460G>A and c.719A>G) in a healthy Venezuelan population. Pharmacogenomics 2023; 24:219-225. [PMID: 36946340 DOI: 10.2217/pgs-2022-0187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
Background: The presence of polymorphisms in the TPMT gene is associated with adverse effects in patients treated with standard doses of thiopurine drugs. Scientific evidence recognizes significant ethnic differences in their frequencies and how their early identification can prevent clinical complications. Methods: 150 healthy residents of Aragua, Venezuela were enrolled. The SNPs c.460G>A and c.719A>G were detected by PCR-restriction fragment length polymorphism assay and c.238G>C by allele-specific PCR. Results: All genotype polymorphisms were heterozygous. TPMT*1/*3A, TPMT*1/*3C and TPMT*1/*2 genotypes were found in 4.0, 2.0 and 0.7%, respectively. Conclusion: 6.7% of individuals have an intermediate TPMT activity. These findings support the importance of prior genotyping of TPMT in Venezuelan patients who require thiopurine drug therapy.
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Affiliation(s)
- Yuselin Mora
- Instituto de Investigaciones Biomédicas 'Dr. Francisco J. Triana Alonso' (BIOMED) - Sección de Polimorfismos Genómicos, Facultad de Ciencias de la Salud, Universidad de Carabobo, Sede Aragua, Maracay, 2102, Venezuela
| | - Cecilia Villegas
- Instituto de Investigaciones Biomédicas 'Dr. Francisco J. Triana Alonso' (BIOMED) - Sección de Polimorfismos Genómicos, Facultad de Ciencias de la Salud, Universidad de Carabobo, Sede Aragua, Maracay, 2102, Venezuela
| | - Yamile M Mora
- Instituto de Investigaciones Biomédicas 'Dr. Francisco J. Triana Alonso' (BIOMED) - Sección de Polimorfismos Genómicos, Facultad de Ciencias de la Salud, Universidad de Carabobo, Sede Aragua, Maracay, 2102, Venezuela
| | - Nancy Moreno
- Instituto de Investigaciones Biomédicas 'Dr. Francisco J. Triana Alonso' (BIOMED) - Sección de Polimorfismos Genómicos, Facultad de Ciencias de la Salud, Universidad de Carabobo, Sede Aragua, Maracay, 2102, Venezuela
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Perdalkar S, Basthi Mohan P, Musunuri B, Rajpurohit S, Shetty S, Bhat K, Pai CG. Thiopurine therapy in inflammatory bowel disease in the pandemic era: Safe or unsafe? Int Immunopharmacol 2023; 116:109597. [PMID: 36702073 DOI: 10.1016/j.intimp.2022.109597] [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: 10/19/2022] [Revised: 12/03/2022] [Accepted: 12/11/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is a chronic inflammatory condition of the gastrointestinal tract. Crohn's disease (CD) and Ulcerative colitis (UC) are the two major types affecting millions across the globe. Various immunomodulatory drugs consisting of small molecules (thiopurines, methotrexate and tofacitinib) and biologics are used to treat IBD. Thiopurines (TP) are widely used in the treatment of IBD and it plays an important role both alone and in combination with anti-TNF agents as IBD maintenance therapy. Although the advent of biologics therapy has significantly advanced the management of IBD, TP remains the mainstay of treatment in resource-limited and low economic settings. However, the recently commenced pandemic has raised uncertainty over the safety of the use of immunosuppressant drugs such as TP among healthcare care providers and patients, as there is a scarcity of data on whether IBD patients are at higher risk of COVID-19 infection or more prone to its severe outcomes. AIM This review aims to encapsulate evidence on the risk of COVID-19 infection and its severe prognosis in IBD patients on TP. Additionally, it also evaluates the role of TP in inhibiting the viral protease, a potential drug target, essential for the replication and pathogenesis of the virus. CONCLUSION Emerging evidence suggests that TP therapy is safe during the current pandemic and does not carry an elevated risk when used as monotherapy or in combination with other IBD drugs. In-vitro studies demonstrate that TP is a potential therapeutic for present and future betacoronavirus pandemics.
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Affiliation(s)
- Shailesh Perdalkar
- Department of Gastroenterology and Hepatology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India
| | - Pooja Basthi Mohan
- Department of Gastroenterology and Hepatology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India
| | - Balaji Musunuri
- Department of Gastroenterology and Hepatology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India
| | - Siddheesh Rajpurohit
- Department of Gastroenterology and Hepatology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India
| | - Shiran Shetty
- Department of Gastroenterology and Hepatology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India
| | - Krishnamurthy Bhat
- Department of Pharmaceutical Quality Assurance, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, India
| | - Cannanore Ganesh Pai
- Department of Gastroenterology and Hepatology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India.
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Sandborn WJ, Rebuck R, Wang Y, Zou B, Adedokun OJ, Gasink C, Sands BE, Hanauer SB, Targan S, Ghosh S, de Villiers WJS, Colombel JF, Feagan BG, Lynch JP. Five-Year Efficacy and Safety of Ustekinumab Treatment in Crohn's Disease: The IM-UNITI Trial. Clin Gastroenterol Hepatol 2022; 20:578-590.e4. [PMID: 33618023 PMCID: PMC8374005 DOI: 10.1016/j.cgh.2021.02.025] [Citation(s) in RCA: 96] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/10/2021] [Accepted: 02/15/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS The IM-UNITI study and long-term extension (LTE) evaluated the long-term efficacy, safety, and immunogenicity of subcutaneous ustekinumab maintenance therapy in patients with Crohn's disease. Here, we report the final results of IM-UNITI LTE through 5 years. METHODS Patients completing safety and efficacy evaluations at week 44 of the maintenance study were eligible to participate in the LTE and continue the treatment they were receiving. Unblinding occurred after completion of maintenance study analyses (August 2015), and patients receiving placebo were discontinued from the study after unblinding. No dose adjustment occurred in the LTE. Efficacy assessments were conducted every 12 weeks until unblinding and at dosing visits thereafter through week 252. Serum ustekinumab concentrations and antidrug antibodies were evaluated through weeks 252 and 272, respectively. RESULTS Using an intent-to-treat analysis of all patients randomized to ustekinumab at maintenance baseline, 34.4% of patients in the every-8-weeks group and 28.7% in the every-12-weeks group were in clinical remission at week 252. Corresponding remission rates among patients who entered the LTE were 54.9% and 45.2%. Overall, adverse event rates (per 100 patient-years) from maintenance week 0 through the final visit generally were similar in the placebo and combined ustekinumab groups for all adverse events (440.3 vs 327.6), serious adverse events (19.3 vs 17.5), infections (99.8 vs 93.8), and serious infections (3.9 vs 3.4). Serum ustekinumab concentrations were maintained throughout the LTE. Antidrug antibodies occurred in 5.8% of patients who received ustekinumab during induction and maintenance and continued in the LTE. CONCLUSIONS Patients receiving subcutaneous ustekinumab maintained clinical remission through 5 years. No new safety signals were observed. ClinicalTrials.gov number NCT01369355.
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Affiliation(s)
- William J Sandborn
- Division of Gastroenterology, Clinical Operations, Department of Medicine, University of California San Diego Inflammatory Bowel Disease Center, University of California San Diego, La Jolla, California.
| | - Rory Rebuck
- Immunology, Janssen Research & Development, LLC, Spring House, Pennsylvania
| | - Yuhua Wang
- Immunology, Janssen Research & Development, LLC, Spring House, Pennsylvania
| | - Bin Zou
- Immunology, Janssen Research & Development, LLC, Spring House, Pennsylvania
| | - Omoniyi J Adedokun
- Immunology, Janssen Research & Development, LLC, Spring House, Pennsylvania
| | | | - Bruce E Sands
- Feinstein IBD Clinical Center, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Stephen B Hanauer
- Digestive Health Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Stephan Targan
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Subrata Ghosh
- School of Medicine and Health, University College Cork, Ireland and Institute of Immunology and Immunotherapy, University of Birmingham, United Kingdom
| | | | - Jean-Frederic Colombel
- Feinstein IBD Clinical Center, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Brian G Feagan
- Robarts Clinical Trials, Robarts Research Institute, London, Canada
| | - John P Lynch
- Immunology, Janssen Research & Development, LLC, Spring House, Pennsylvania
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Fousekis FS, Papamichael K, Kourtis G, Albani EN, Orfanidou A, Saridi M, Katsanos KH, Christodoulou DK. The efficacy of immunomodulators in the prevention and suppression of anti-drug antibodies to anti-tumor necrosis factor therapy in inflammatory bowel disease. Ann Gastroenterol 2022; 35:1-7. [PMID: 34987282 PMCID: PMC8713338 DOI: 10.20524/aog.2021.0682] [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: 07/29/2021] [Accepted: 10/28/2021] [Indexed: 11/11/2022] Open
Abstract
The development of biological agents against tumor necrosis factor (TNF) has revolutionized the management of inflammatory bowel disease (IBD), frequently achieving induction and maintenance of remission in both ulcerative colitis and Crohn's disease. However, a loss of response due to the development of anti-drug antibodies (ADA) is seen annually in approximately 20% of IBD patients receiving anti-TNF therapy. Current evidence suggests that the use of immunomodulators (IMM), such as thiopurines (azathioprine and 6-mercaptopurine) or methotrexate, may prevent or suppress ADA formation. In this article, we present a comprehensive review of the available literature regarding the efficacy of IMM in the prevention and suppression of ADA development to anti-TNF therapy in patients with IBD.
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Affiliation(s)
- Fotios S. Fousekis
- Department of Gastroenterology, School of Health Sciences, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, Greece (Fotios S. Fousekis, Konstantinos H. Katsanos, Dimitrios K. Christodoulou)
| | - Konstantinos Papamichael
- Center for Inflammatory Bowel Diseases, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA (Konstantinos Papamichael)
| | - Georgios Kourtis
- Department of Department of Nursing, “Sotiria” General Hospital, Athens, Greece (Georgios Kourtis)
| | - Eleni N. Albani
- Department of Nursing, University of Patra, Patra, Greece (Eleni N. Albani)
| | - Afroditi Orfanidou
- Academic Department of Gastroenterology, Laiko General Hospital, Medical School of National Kapodistrian University of Athens, Greece (Afroditi Orfanidou)
| | - Maria Saridi
- Department of Nursing, University of Thessaly, Lamia, Greece (Maria Saridi)
| | - Konstantinos H. Katsanos
- Department of Gastroenterology, School of Health Sciences, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, Greece (Fotios S. Fousekis, Konstantinos H. Katsanos, Dimitrios K. Christodoulou)
| | - Dimitrios K. Christodoulou
- Department of Gastroenterology, School of Health Sciences, University Hospital of Ioannina, Faculty of Medicine, University of Ioannina, Ioannina, Greece (Fotios S. Fousekis, Konstantinos H. Katsanos, Dimitrios K. Christodoulou)
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Kayal M, Riggs A, Plietz M, Khaitov S, Sylla P, Greenstein AJ, Harpaz N, Itzkowitz SH, Shah SC. The association between pre-colectomy thiopurine use and risk of neoplasia after ileal pouch anal anastomosis in patients with ulcerative colitis or indeterminate colitis: a propensity score analysis. Int J Colorectal Dis 2022; 37:123-130. [PMID: 34570283 PMCID: PMC8853846 DOI: 10.1007/s00384-021-04033-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/19/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND The risk of neoplasia of the pouch or residual rectum in patients with ulcerative colitis (UC) who undergo total proctocolectomy (TPC) with ileal pouch anal anastomosis (IPAA) is incompletely investigated. Thiopurine use is associated with a reduced risk of colorectal neoplasia in patients with UC. We tested the hypothesis that thiopurine use prior to TPC may be associated with a reduced risk of primary neoplasia after IPAA. METHODS We conducted a retrospective cohort analysis of patients from a tertiary referral center from January 2008 to December 2017. Eligible patients with UC or IC underwent TPC with IPAA and had at least two pouchoscopies with biopsies ≥ 6 months after surgery. Propensity score analysis was conducted to match thiopurine exposed vs unexposed groups based on clinical covariates. Multivariable Cox regression analysis estimated the risk of neoplasia. RESULTS A total of 284 patients with UC or IC (57.4% male, median age 35.6 years) were analyzed. Ninety-seven patients (34.2%) were confirmed to have thiopurine exposure ≥ 12 weeks immediately prior to TPC ("exposed") and 187 (65.8%) were confirmed to have no thiopurine exposure for at least 365 days prior to TPC ("non-exposed"). Compared to non-exposed patients, patients with thiopurine exposure less often had dysplasia (7.2% vs 23.0%, p = 0.001) and had lower grades of dysplasia before colectomy. After IPAA, patients with neoplasia were older (44.0 vs 34.8 years, p = 0.03), more likely to have had dysplasia as colectomy indication (44.4% vs 15.4%, p = 0.007), and more likely to require pouch excision (55.6% vs 10.2%, p < 0.0001), compared to patients without neoplasia. On propensity-matched cohort analysis, no factors were significantly associated with risk of primary neoplasia. CONCLUSION Thiopurine exposure for at least the 12 weeks prior to TPC in patients with UC or IC does not appear to be independently associated with risk of primary neoplasia following IPAA.
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Affiliation(s)
- Maia Kayal
- Department of Medicine, Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, Box 1069, New York, NY, USA.
| | - Alexa Riggs
- Department of Medicine, Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, Box 1069, New York, NY, USA
| | - Michael Plietz
- Department of Surgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sergey Khaitov
- Department of Surgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Patricia Sylla
- Department of Surgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Noam Harpaz
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Steven H Itzkowitz
- Department of Medicine, Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, Box 1069, New York, NY, USA
| | - Shailja C Shah
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, USA
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Zudeh G, Franca R, Stocco G, Decorti G. Biomarkers for gastrointestinal adverse events related to thiopurine therapy. World J Gastroenterol 2021; 27:6348-6356. [PMID: 34720526 PMCID: PMC8517779 DOI: 10.3748/wjg.v27.i38.6348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/29/2021] [Accepted: 09/03/2021] [Indexed: 02/06/2023] Open
Abstract
Thiopurines are immunomodulators used in the treatment of acute lymphoblastic leukemia and inflammatory bowel diseases. Adverse reactions to these agents are one of the main causes of treatment discontinuation or interruption. Myelosuppression is the most frequent adverse effect; however, approximately 5%-20% of patients develop gastrointestinal toxicity. The identification of biomarkers able to prevent and/or monitor these adverse reactions would be useful for clinicians for the proactive management of long-term thiopurine therapy. In this editorial, we discuss evidence supporting the use of PACSIN2, RAC1, and ITPA genes, in addition to TPMT and NUDT15, as possible biomarkers for thiopurine-related gastrointestinal toxicity.
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Affiliation(s)
- Giulia Zudeh
- Department of Life Sciences, University of Trieste, Trieste 34127, Italy
| | - Raffaella Franca
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste 34149, Italy
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, Trieste 34127, Italy
| | - Giuliana Decorti
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste 34149, Italy
- Institute for Maternal and Child Health I.R.C.C.S Burlo Garofolo, Trieste 34137, Italy
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Raine T, Verstockt B, Kopylov U, Karmiris K, Goldberg R, Atreya R, Burisch J, Burke J, Ellul P, Hedin C, Holubar SD, Katsanos K, Lobaton T, Schmidt C, Cullen G. ECCO Topical Review: Refractory Inflammatory Bowel Disease. J Crohns Colitis 2021; 15:1605-1620. [PMID: 34160593 DOI: 10.1093/ecco-jcc/jjab112] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Inflammatory bowel disease is a chronic disease with variable degrees of extent, severity, and activity. A proportion of patients will have disease that is refractory to licensed therapies, resulting in significant impairment in quality of life. The treatment of these patients involves a systematic approach by the entire multidisciplinary team, with particular consideration given to medical options including unlicensed therapies, surgical interventions, and dietetic and psychological support. The purpose of this review is to guide clinicians through this process and provide an accurate summary of the available evidence for different strategies.
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Affiliation(s)
- Tim Raine
- Department of Gastroenterology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Bram Verstockt
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
- Department of Chronic Diseases and Metabolism, TARGID - IBD, KU Leuven, Leuven, Belgium
| | - Uri Kopylov
- Department of Gastroenterology, Sheba Medical Center, Ramat Gan, Israel
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | | | - Rimma Goldberg
- Department of Gastroenterology, Monash Health and School of Clinical Sciences, Monash University, Melbourne, VIC, Australia
| | - Raja Atreya
- Department of Medicine 1, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Johan Burisch
- Gastrounit, Medical Division, Hvidovre Hospital, University of Copenhagen, Copenhagen, Denmark
| | - John Burke
- Colorectal and General Surgery, Beaumont Hospital, Dublin, Ireland
| | - Pierre Ellul
- Department of Medicine, Division of Gastroenterology, Mater Dei Hospital, Msida, Malta
| | - Charlotte Hedin
- Karolinska Institutet, Department of Medicine Solna, Stockholm, Sweden
- Karolinska University Hospital, Gastroenterology Unit, Department of Gastroenterology, Dermatovenereology and Rheumatology, Stockholm, Sweden
| | - Stefan D Holubar
- Department of Colon & Rectal Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Konstantinos Katsanos
- Department of Gastroenterology and Hepatology, University and Medical School of Ioannina, Ioannina, Greece
| | - Triana Lobaton
- Department of Gastroenterology, Ghent University Hospital, Ghent, Belgium
| | - Carsten Schmidt
- Medical Faculty of the Friedrich Schiller University, Jena, Germany
| | - Garret Cullen
- Centre for Colorectal Disease, St Vincent's University Hospital and School of Medicine, University College Dublin, Gastroenterology, Dublin, Ireland
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11
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Nguyen ALH, Sparrow MP. Evolving Role of Thiopurines in Inflammatory Bowel Disease in the Era of Biologics and New Small Molecules. Dig Dis Sci 2021; 66:3250-3262. [PMID: 33073334 DOI: 10.1007/s10620-020-06662-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 10/06/2020] [Indexed: 12/09/2022]
Abstract
In recent years, with the increasing availability of biologic therapies and due to safety concerns, the role of thiopurines in the management of inflammatory bowel disease has been questioned. While acknowledging that the benefit/risk ratio of biologic therapies is very high, they are expensive and are not required by a majority of patients. Therefore, thiopurines do retain an important role as steroid-sparing and maintenance agents when used as monotherapy, and in combination therapy with biologics due to their clinical and pharmacokinetic optimization of anti-tumor necrosis factor agents in particular. Safety concerns with thiopurines are real but also relatively rare, and with careful pre-treatment screening and ongoing monitoring thiopurine benefits outweigh risks in the majority of appropriately selected patients. Measurement of newer pharmacogenomic markers such as nudix hydrolase 15 (NUDT15), when combined with knowledge of existing known mutations (e.g., thiopurine S-methyltransferase-TPMT), will hopefully minimize the risk of potentially life-threatening leukopenia by allowing for pre-treatment dosing stratification. Further optimization of thiopurine dosing via measurement of thiopurine metabolites should be performed routinely and is superior to weight-based dosing. The association of thiopurines with malignancies including lymphoproliferative disorders needs to be recognized in all patients and individualized in each patient. The decrease in lymphoma risk after thiopurine cessation provides an incentive for thiopurine de-escalation in appropriate patients after a period of prolonged deep remission. This review will summarize the current role of thiopurines in inflammatory bowel disease management and provide recommendations for commencing and monitoring therapy, and when to consider de-escalation.
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Affiliation(s)
- Anke L H Nguyen
- Department of Gastroenterology, Alfred Health, 55 Commercial Road, Melbourne, 3004, VIC, Australia.,Monash University, Melbourne, Australia
| | - Miles P Sparrow
- Department of Gastroenterology, Alfred Health, 55 Commercial Road, Melbourne, 3004, VIC, Australia. .,Monash University, Melbourne, Australia.
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12
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Candels LS, Rahim MN, Shah S, Heneghan MA. Towards personalised medicine in autoimmune hepatitis: Measurement of thiopurine metabolites results in higher biochemical response rates. J Hepatol 2021; 75:324-332. [PMID: 33872691 DOI: 10.1016/j.jhep.2021.03.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Patients with autoimmune hepatitis (AIH) usually receive maintenance therapy with thiopurines, such as azathioprine (AZA) or mercaptopurine. Genetic polymorphisms in AZA metabolism can lead to variations in thioguanine nucleotide (TGN) and 6-methylmercaptopurine, both of which can cause adverse drug reactions (ADRs). In inflammatory bowel disease, a therapeutic TGN range (225-450 pmol/8x108 erythrocytes) has been identified to optimise effectiveness. We evaluated the benefits of a personalised medicine approach to thiopurine dosing, in comparison to standard weight-based dosing. METHODS A retrospective matched cohort study of 214 patients with AIH who were seen at King's College between 1999-2019 was performed. Metabolite levels were measured in 109 patients. The control group included 105 patients on weight-based thiopurine dosing with no metabolite monitoring. RESULTS Biochemical response (BR) occurred more frequently at 6-month follow-up in patients with metabolite monitoring compared to those on a weight-based regimen (77% vs. 60%, p = 0.008). This remained true with data analysis based on clinicians who measure metabolites and those who do not (BR at 6 months: 84% vs. 64%, p = 0.016). Patients with BR had TGN levels within the therapeutic range of 225-450 pmol/8x108 erythrocytes significantly more often than those who failed to achieve or lost BR (40% vs. 13%, p <0.0001). Moreover, TGN levels within the pre-defined therapeutic range predicted more stable disease within 6 months of testing compared to levels outside the range (p <0.0001). A high proportion of patients with sub-therapeutic TGN levels (75-225 pmol/8x108 erythrocytes) remained in BR (75% vs. 81%, p = 0.589) with fewer ADRs (44% vs. 86%, p = 0.0002) when compared to patients with therapeutic TGN levels. CONCLUSION A strategy of personalised medicine using metabolite levels can optimise treatment regimens in AIH, resulting in fewer ADRs whilst maintaining BR. LAY SUMMARY This study looked to see if measuring the breakdown products of a medication used in autoimmune hepatitis increases the chances of gaining good control of the disease, when compared to a group of patients who were on a dose of this medication based on their weight. A group of 214 patients with autoimmune hepatitis were split into 2 groups: roughly half had their medication dose adjusted according to measurements of breakdown products in the blood, whilst the other half received their weight-based dose as normal. The results confirmed that using a personalised approach and checking drug breakdown products resulted in fewer side effects and potentially improved control of disease.
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Affiliation(s)
- Lena S Candels
- Institute of Liver Studies, King's College Hospital, London, SE5 9RS, UK; Department of Internal Medicine III, University Hospital RWTH Aachen, 52074 Aachen, Germany
| | - Mussarat N Rahim
- Institute of Liver Studies, King's College Hospital, London, SE5 9RS, UK; School of Transplantation, Immunology and Mucosal Biology, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Sital Shah
- Institute of Liver Studies, King's College Hospital, London, SE5 9RS, UK
| | - Michael A Heneghan
- Institute of Liver Studies, King's College Hospital, London, SE5 9RS, UK; School of Transplantation, Immunology and Mucosal Biology, Faculty of Life Sciences and Medicine, King's College London, London, UK; European Reference Network - Hepatological Diseases (ERN RARE-LIVER).
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13
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Gargallo-Puyuelo CJ, Laredo V, Gomollón F. Thiopurines in Inflammatory Bowel Disease. How to Optimize Thiopurines in the Biologic Era? Front Med (Lausanne) 2021; 8:681907. [PMID: 34336887 PMCID: PMC8322650 DOI: 10.3389/fmed.2021.681907] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/23/2021] [Indexed: 12/18/2022] Open
Abstract
Thiopurines have been a cornerstone in the treatment of inflammatory bowel disease (IBD). Although they have been used for more than 50 years, there are still some unsolved issues about their efficacy and, also, some safety concerns, mainly the risk of myelosuppression and life-threatening lymphoproliferative disorders. Furthermore, the development of biological therapy raises the question whether there is still a role for thiopurines in the IBD treatment algorithm. On the other hand, limited cost and wide availability make thiopurines a reasonable option in settings of limited resources and increasing prevalence of IBD. In fact, there is a growing interest in optimizing thiopurine therapy, since pharmacogenomic findings suggest that a personalized approach based on the genotyping of some molecules involved in its metabolism could be useful to prevent side effects. Polymorphisms of thiopurine methyltransferase enzyme (TPMT) that result in low enzymatic activity have been associated with an increased risk of myelotoxicity, especially in Caucasians; however, in Asians it is assumed that the variants of nudix hydrolase 15 (NUDT15) are more relevant in the development of toxicity. Age is also important, since in elderly patients the risk of complications seems to be increased. Moreover, the primo-infection of Epstein Barr virus and cytomegalovirus under thiopurine treatment has been associated with severe lymphoproliferative disorders. In addition to assessing individual characteristics that may influence thiopurines treatment outcomes, this review also discusses other strategies to optimize the therapy. Low-dose thiopurines combined with allopurinol can be used in hypermethylators and in thiopurine-related hepatotoxicity. The measurement of metabolites could be useful to assess compliance, identify patients at risk of adverse events and also facilitating the management of refractory patients. Thioguanine is also a rescue therapy in patients with toxicity related to conventional thiopurine therapy. Finally, the current indications for thiopurines in monotherapy or in combination with biologics, as well as the optimal duration of treatment, are also reviewed.
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Affiliation(s)
| | - Viviana Laredo
- Department of Gastroenterology, University Clinic Hospital Lozano Blesa, Zaragoza, Spain
| | - Fernando Gomollón
- Department of Gastroenterology, University Clinic Hospital Lozano Blesa, Zaragoza, Spain.,Department of Medicine, Psychiatry and Dermatology, University of Zaragoza, Zaragoza, Spain.,Institute for Health Research Aragón (IIS Aragón), Zaragoza, Spain.,Centro de Investigación Biomédica en Red, Enfermedades Hepáticas y Digestivas, Madrid, Spain
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14
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Therapeutic drug monitoring of immunosuppressive drugs in hepatology and gastroenterology. Best Pract Res Clin Gastroenterol 2021; 54-55:101756. [PMID: 34874840 DOI: 10.1016/j.bpg.2021.101756] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 06/11/2021] [Indexed: 01/31/2023]
Abstract
Immunosuppressive drugs have been key to the success of liver transplantation and are essential components of the treatment of inflammatory bowel disease (IBD) and autoimmune hepatitis (AIH). For many but not all immunosuppressants, therapeutic drug monitoring (TDM) is recommended to guide therapy. In this article, the rationale and evidence for TDM of tacrolimus, mycophenolic acid, the mammalian target of rapamycin inhibitors, and azathioprine in liver transplantation, IBD, and AIH is reviewed. New developments, including algorithm-based/computer-assisted immunosuppressant dosing, measurement of immunosuppressants in alternative matrices for whole blood, and pharmacodynamic monitoring of these agents is discussed. It is expected that these novel techniques will be incorporate into the standard TDM in the next few years.
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15
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Singh A, Mahajan R, Kedia S, Dutta AK, Anand A, Bernstein CN, Desai D, Pai CG, Makharia G, Tevethia HV, Mak JW, Kaur K, Peddi K, Ranjan MK, Arkkila P, Kochhar R, Banerjee R, Sinha SK, Ng SC, Hanauer S, Verma S, Dutta U, Midha V, Mehta V, Ahuja V, Sood A. Use of thiopurines in inflammatory bowel disease: an update. Intest Res 2021; 20:11-30. [PMID: 33845546 PMCID: PMC8831775 DOI: 10.5217/ir.2020.00155] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 03/01/2021] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD), once considered a disease of the Western hemisphere, has emerged as a global disease. As the disease prevalence is on a steady rise, management of IBD has come under the spotlight. 5-Aminosalicylates, corticosteroids, immunosuppressive agents and biologics are the backbone of treatment of IBD. With the advent of biologics and small molecules, the need for surgery and hospitalization has decreased. However, economic viability and acceptability is an important determinant of local prescription patterns. Nearly one-third of the patients in West receive biologics as the first/initial therapy. The scenario is different in developing countries where biologics are used only in a small proportion of patients with IBD. Increased risk of reactivation of tuberculosis and high cost of the therapy are limitations to their use. Thiopurines hence become critical for optimal management of patients with IBD in these regions. However, approximately one-third of patients are intolerant or develop adverse effects with their use. This has led to suboptimal use of thiopurines in clinical practice. This review article discusses the clinical aspects of thiopurine use in patients with IBD with the aim of optimizing their use to full therapeutic potential.
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Affiliation(s)
- Arshdeep Singh
- Department of Gastroenterology, Dayanand Medical College and Hospital, Ludhiana, India
| | - Ramit Mahajan
- Department of Gastroenterology, Dayanand Medical College and Hospital, Ludhiana, India
| | - Saurabh Kedia
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Kumar Dutta
- Department of Gastroenterology, Christian Medical College, Vellore, India
| | - Abhinav Anand
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Charles N Bernstein
- University of Manitoba IBD Clinical and Research Centre, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Devendra Desai
- P. D. Hinduja Hospital and Medical Research Centre, Mumbai, India
| | - C Ganesh Pai
- Department of Gastroenterology, Kasturba Medical College, Manipal, India
| | - Govind Makharia
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | | | - Joyce Wy Mak
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Kirandeep Kaur
- Department of Pharmacology, Dayanand Medical College and Hospital, Ludhiana, India
| | - Kiran Peddi
- Citizens Centre for Digestive Disorders, Hyderabad, India
| | - Mukesh Kumar Ranjan
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Perttu Arkkila
- Department of Gastroenterology, Helsinki University Central Hospital, Helsinki, Finland
| | - Rakesh Kochhar
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Rupa Banerjee
- Asian Institute of Gastroenterology Hyderabad, Hyderabad, India
| | - Saroj Kant Sinha
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Siew Chien Ng
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Stephen Hanauer
- Department of Medicine, Northwestern University, Chicago, IL, USA
| | - Suhang Verma
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Usha Dutta
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Vandana Midha
- Department of Internal Medicine, Dayanand Medical College, Ludhiana, India
| | - Varun Mehta
- Department of Gastroenterology, Dayanand Medical College and Hospital, Ludhiana, India
| | - Vineet Ahuja
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Ajit Sood
- Department of Gastroenterology, Dayanand Medical College and Hospital, Ludhiana, India
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16
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Rosdiana DS, Setiabudy R, Andalusia R, Gatot D, Louisa M, Bardosono S, Instiaty I. TPMT Genetic Variability and Its Association with Hematotoxicity in Indonesian Children with Acute Lymphoblastic Leukemia in Maintenance Therapy. Pharmgenomics Pers Med 2021; 14:199-210. [PMID: 33568932 PMCID: PMC7868246 DOI: 10.2147/pgpm.s288988] [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: 10/31/2020] [Accepted: 12/29/2020] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Hematotoxicity monitoring in children with acute lymphoblastic leukemia (ALL) is critical to preventing life-threatening infections and drug discontinuation. The primary drug that causes hematotoxicity in ALL children is 6-mercaptopurine (6-MP). Genetic variability of the drug-metabolizing enzymes of 6-MP, thiopurine S-methyltransferase (TPMT), is one factor that might increase the susceptibility of children to hematotoxicity. The present study aimed to determine the variability in TPMT genotypes and phenotypes and its association with the occurrence of hematotoxicity in ALL children in maintenance therapy. PATIENTS AND METHODS A cross-sectional study was conducted at Cipto Mangunkusumo and Dharmais National Cancer Hospital, Jakarta, Indonesia, from June 2017 to October 2018. We included ALL patients, 1-18 years, who were receiving at least one month of 6-MP during maintenance therapy according to the Indonesian protocol for ALL 2013. Direct sequencing was used to determine TPMT*3A, *3B, and *3C genotypes, and LC-MS/MS analysis was performed to measure the plasma concentrations of 6-MP and its metabolites. Association analysis between the TPMT genotype and hematotoxicity was evaluated using the unpaired t-test or Mann-Whitney's test. RESULTS The prevalence of neutropenia, anemia, and thrombocytopenia in ALL children during maintenance therapy was 51.9%, 44.3%, and 6.6%, respectively. We found a low frequency of TPMT*3C, which is 0.95%. No association was found between hematotoxicity and TPMT genotypes or age, nutritional status, serum albumin levels, risk stratification, the daily dose of 6-MP, and cotrimoxazole co-administration. However, hematotoxicity was associated with 6-methylmercaptopurine (6-MeMP) plasma concentrations and the ratio 6-MeMP/6-thioguanine (6-TGN). We also found no association between TPMT genotypes and TPMT phenotypes. CONCLUSION The 6-MeMP/6-TGN ratio is associated with hematotoxicity in ALL children during maintenance therapy but is not strong enough to predict hematotoxicity.
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Affiliation(s)
- Dewi Selvina Rosdiana
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Rianto Setiabudy
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Rizka Andalusia
- Dharmais National Cancer Hospital, Jakarta, Indonesia
- Drug Registration Directorate, National Agency for Drug and Food Control, Jakarta, Indonesia
| | - Djajadiman Gatot
- Division of Hematology-Oncology, Department of Pediatrics, Faculty of Medicine, Universitas Indonesia/Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Melva Louisa
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Saptawati Bardosono
- Department of Nutrition, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Instiaty Instiaty
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
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17
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Zalizko P, Stefanovics J, Sokolovska J, Paramonova N, Klavina E, Erts R, Rovite V, Klovins J, Pukitis A. Thiopurine S-methyltransferase genetic polymorphisms in adult patients with inflammatory bowel diseases in the Latvian population. Therap Adv Gastroenterol 2020; 13:1756284820937426. [PMID: 32704308 PMCID: PMC7361485 DOI: 10.1177/1756284820937426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 05/29/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Thiopurine methyltransferase (TPMT) plays a significant role in the metabolism of thiopurines, and, for patients with inflammatory bowel disease (IBD), it is useful to perform TPMT genotyping prior to azathioprine (AZA) treatment. In this study, we determined TPMT gene polymorphisms in a cohort of IBD patients in Latvia. METHODS DNA samples were obtained from 244 IBD patients, and qPCR was performed for detection of rs1800462, rs1800460, and rs1142345 single-nucleotide polymorphisms (SNPs). Three common, non-functional TPMT alleles (TPMT*2, *3B, and *3C) were identified (women, 51%; men, 49%). TPMT*2, *3A, *3B, and *3C allelic variants detected using qPCR were consistent with restriction fragment length polymorphism (RFLP) data. RESULTS Among patients, 78% had ulcerative colitis and 22% had Crohn's disease, with 93.9% of the former carrying a wild-type homozygous TPMT*1/*1 genotype and 6.1% carrying heterozygous genotypes. The most frequent polymorphisms were TPMT*1/*3A (5.3%: two variants: TPMT*3B and TPMT*3C), TPMT*1/*3C (0.4%), and TPMT*1/*2 (0.4%). None of the patients carried a TPMT*3B polymorphism and no patients were homozygous for any mutation. CONCLUSION This is the first study to identify TPMT gene polymorphisms in adult IBD patients in Latvia. The results indicate that the frequency of common TPMT alleles is similar to that of other European populations.
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Affiliation(s)
| | - Juris Stefanovics
- Pauls Stradins Clinical University Hospital, Riga, Latvia
- Faculty of Medicine, Laboratory of Personalized Medicine, University of Latvia, Riga, Latvia
| | - Jelizaveta Sokolovska
- Faculty of Medicine, Laboratory of Personalized Medicine, University of Latvia, Riga, Latvia
| | - Natalia Paramonova
- Genomics and Bioinformatics, Institute of Biology of the University of Latvia, Salaspils, Latvia
| | - Evija Klavina
- Pauls Stradins Clinical University Hospital, Riga, Latvia
| | - Renars Erts
- Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Vita Rovite
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Janis Klovins
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Aldis Pukitis
- Pauls Stradins Clinical University Hospital, Riga, Latvia
- Faculty of Medicine, University of Latvia, Riga, Latvia
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18
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Lamb CA, Kennedy NA, Raine T, Hendy PA, Smith PJ, Limdi JK, Hayee B, Lomer MCE, Parkes GC, Selinger C, Barrett KJ, Davies RJ, Bennett C, Gittens S, Dunlop MG, Faiz O, Fraser A, Garrick V, Johnston PD, Parkes M, Sanderson J, Terry H, Gaya DR, Iqbal TH, Taylor SA, Smith M, Brookes M, Hansen R, Hawthorne AB. British Society of Gastroenterology consensus guidelines on the management of inflammatory bowel disease in adults. Gut 2019; 68:s1-s106. [PMID: 31562236 PMCID: PMC6872448 DOI: 10.1136/gutjnl-2019-318484] [Citation(s) in RCA: 1240] [Impact Index Per Article: 248.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 06/10/2019] [Accepted: 06/10/2019] [Indexed: 02/06/2023]
Abstract
Ulcerative colitis and Crohn's disease are the principal forms of inflammatory bowel disease. Both represent chronic inflammation of the gastrointestinal tract, which displays heterogeneity in inflammatory and symptomatic burden between patients and within individuals over time. Optimal management relies on understanding and tailoring evidence-based interventions by clinicians in partnership with patients. This guideline for management of inflammatory bowel disease in adults over 16 years of age was developed by Stakeholders representing UK physicians (British Society of Gastroenterology), surgeons (Association of Coloproctology of Great Britain and Ireland), specialist nurses (Royal College of Nursing), paediatricians (British Society of Paediatric Gastroenterology, Hepatology and Nutrition), dietitians (British Dietetic Association), radiologists (British Society of Gastrointestinal and Abdominal Radiology), general practitioners (Primary Care Society for Gastroenterology) and patients (Crohn's and Colitis UK). A systematic review of 88 247 publications and a Delphi consensus process involving 81 multidisciplinary clinicians and patients was undertaken to develop 168 evidence- and expert opinion-based recommendations for pharmacological, non-pharmacological and surgical interventions, as well as optimal service delivery in the management of both ulcerative colitis and Crohn's disease. Comprehensive up-to-date guidance is provided regarding indications for, initiation and monitoring of immunosuppressive therapies, nutrition interventions, pre-, peri- and postoperative management, as well as structure and function of the multidisciplinary team and integration between primary and secondary care. Twenty research priorities to inform future clinical management are presented, alongside objective measurement of priority importance, determined by 2379 electronic survey responses from individuals living with ulcerative colitis and Crohn's disease, including patients, their families and friends.
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Affiliation(s)
- Christopher Andrew Lamb
- Newcastle University, Newcastle upon Tyne, UK
- Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Nicholas A Kennedy
- Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
- University of Exeter, Exeter, UK
| | - Tim Raine
- Cambridge University Hospitals NHS FoundationTrust, Cambridge, UK
| | - Philip Anthony Hendy
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
- Imperial College London, London, UK
| | - Philip J Smith
- Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
| | - Jimmy K Limdi
- The Pennine Acute Hospitals NHS Trust, Manchester, UK
- University of Manchester, Manchester, UK
| | - Bu'Hussain Hayee
- King's College Hospital NHS Foundation Trust, London, UK
- King's College London, London, UK
| | - Miranda C E Lomer
- King's College London, London, UK
- Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Gareth C Parkes
- Barts Health NHS Trust, London, UK
- Barts and the London School of Medicine and Dentistry, London, UK
| | - Christian Selinger
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
- University of Leeds, Leeds, UK
| | | | - R Justin Davies
- Cambridge University Hospitals NHS FoundationTrust, Cambridge, UK
- University of Cambridge, Cambridge, UK
| | - Cathy Bennett
- Systematic Research Ltd, Quorn, UK
- Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | | | - Malcolm G Dunlop
- University of Edinburgh, Edinburgh, UK
- Western General Hospital, Edinburgh, UK
| | - Omar Faiz
- Imperial College London, London, UK
- St Mark's Hospital, Harrow, UK
| | - Aileen Fraser
- University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | | | | | - Miles Parkes
- Cambridge University Hospitals NHS FoundationTrust, Cambridge, UK
| | - Jeremy Sanderson
- King's College London, London, UK
- Guy's and St Thomas' NHS Foundation Trust, London, UK
| | | | - Daniel R Gaya
- Glasgow Royal Infirmary, Glasgow, UK
- University of Glasgow, Glasgow, UK
| | - Tariq H Iqbal
- Queen Elizabeth Hospital Birmingham NHSFoundation Trust, Birmingham, UK
- University of Birmingham, Birmingham, UK
| | - Stuart A Taylor
- University College London, London, UK
- University College London Hospitals NHS Foundation Trust, London, UK
| | - Melissa Smith
- Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
- Brighton and Sussex Medical School, Brighton, UK
| | - Matthew Brookes
- Royal Wolverhampton NHS Trust, Wolverhampton, UK
- University of Wolverhampton, Wolverhampton, UK
| | - Richard Hansen
- Royal Hospital for Children Glasgow, Glasgow, UK
- University of Glasgow, Glasgow, UK
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19
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Abstract
Ulcerative colitis and Crohn's disease are the principal forms of inflammatory bowel disease. Both represent chronic inflammation of the gastrointestinal tract, which displays heterogeneity in inflammatory and symptomatic burden between patients and within individuals over time. Optimal management relies on understanding and tailoring evidence-based interventions by clinicians in partnership with patients. This guideline for management of inflammatory bowel disease in adults over 16 years of age was developed by Stakeholders representing UK physicians (British Society of Gastroenterology), surgeons (Association of Coloproctology of Great Britain and Ireland), specialist nurses (Royal College of Nursing), paediatricians (British Society of Paediatric Gastroenterology, Hepatology and Nutrition), dietitians (British Dietetic Association), radiologists (British Society of Gastrointestinal and Abdominal Radiology), general practitioners (Primary Care Society for Gastroenterology) and patients (Crohn's and Colitis UK). A systematic review of 88 247 publications and a Delphi consensus process involving 81 multidisciplinary clinicians and patients was undertaken to develop 168 evidence- and expert opinion-based recommendations for pharmacological, non-pharmacological and surgical interventions, as well as optimal service delivery in the management of both ulcerative colitis and Crohn's disease. Comprehensive up-to-date guidance is provided regarding indications for, initiation and monitoring of immunosuppressive therapies, nutrition interventions, pre-, peri- and postoperative management, as well as structure and function of the multidisciplinary team and integration between primary and secondary care. Twenty research priorities to inform future clinical management are presented, alongside objective measurement of priority importance, determined by 2379 electronic survey responses from individuals living with ulcerative colitis and Crohn's disease, including patients, their families and friends.
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20
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Chang JY, Cheon JH. Thiopurine Therapy in Patients With Inflammatory Bowel Disease: A Focus on Metabolism and Pharmacogenetics. Dig Dis Sci 2019; 64:2395-2403. [PMID: 31290039 DOI: 10.1007/s10620-019-05720-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/02/2019] [Indexed: 12/15/2022]
Abstract
Thiopurines have been widely used for the maintenance of remission or steroid sparing in patients with inflammatory bowel disease. However, potential drug-related adverse events frequently interfere with their use. Indeed, drug withdrawals associated with adverse reactions have been reported in approximately 25% of patients. To balance the efficacy, safety, and tolerability of thiopurines, regular monitoring of biomarkers (complete blood cell count, liver function test, and metabolic profiles), steady dose escalation, and pretreatment thiopurine S-methyltransferase (TPMT) genotype screening have been routinely recommended. However, the complex thiopurine metabolic pathway and individual differences attributed to pharmacogenetic diversity limit the effectiveness of these strategies in the optimization of thiopurine therapy. Recently, in an effort to facilitate more accurate and personalized prediction of thiopurine response or toxicity, novel genetic markers including NUDT15 and FTO genes were discovered. These discoveries are remarkable because TPMT screening has minimal efficacy for predicting myelosuppression especially in Asian populations, despite the fact that thee populations have a higher frequency of myelosuppression than Western populations. This review focuses on the current understanding of the metabolic pathway and the pharmacogenetics of thiopurines and suggests a personalized preventive strategy against potential adverse drug reactions to optimize their therapeutic application.
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Affiliation(s)
- Ji Young Chang
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Department of Health Promotion Center, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jae Hee Cheon
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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van Gennep S, Konté K, Meijer B, Heymans MW, D'Haens GR, Löwenberg M, de Boer NKH. Systematic review with meta-analysis: risk factors for thiopurine-induced leukopenia in IBD. Aliment Pharmacol Ther 2019; 50:484-506. [PMID: 31342537 DOI: 10.1111/apt.15403] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 02/02/2019] [Accepted: 06/16/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Thiopurine-induced leukopenia, a frequently observed and potentially life-threatening adverse event, complicates the clinical management of IBD patients. AIM To assess risk factors for thiopurine-induced leukopenia in IBD. METHODS MEDLINE, EMBASE, BIOSIS and Cochrane library were searched for studies reporting at least one risk factor for thiopurine-induced leukopenia. Pooled odds ratio (OR) was calculated for each potential risk factor using a random effects model. Studies that were not eligible for meta-analysis were described qualitatively. RESULTS Seventy articles were included, 34 (11 229 patients) were included in meta-analyses. A significantly higher thiopurine-induced leukopenia risk was found for TPMT (OR 3.9, 95% [CI] 2.5-6.1) and for NUDT15 R139C (OR 6.9, 95% CI 5.2-9.1), G52A (OR 3.2, 95% CI 1.3-7.9) and 36_37ins/delGGAGTC variant carriers (OR 5.6, 95% CI 2.8-11.4). A potential association between high 6-thioguanine nucleotides (6-TGN) or 6-methylmercaptopurine (6-MMP) levels and leukopenia was observed, since most studies reported higher metabolite levels in leukopenic patients (6-TGN: 204-308 (Lennard method) and 397 (Dervieux method), 6-MMP: 4020-10 450 pmol/8 x 108 RBC) compared to controls (6-TGN: 170-212 (Lennard method) and 269 (Dervieux method), 6-MMP: 1025-4550 pmol/8 x 108 RBC). CONCLUSIONS TPMT and NUDT15 variants predict thiopurine-induced leukopenia. High 6-TGN and 6-MMP levels might induce leukopenia, although exact cut-off values remain unclear. Potential preventive measures to reduce the risk of thiopurine-induced leukopenia include pre-treatment TPMT and NUDT15 genotyping. Routine thiopurine metabolite measurement might be efficient, yet cut-off levels must be validated in advance.
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Affiliation(s)
- Sara van Gennep
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Kadère Konté
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Berrie Meijer
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Martijn W Heymans
- Department of Clinical Epidemiology and Biostatistics, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Geert R D'Haens
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Mark Löwenberg
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Nanne K H de Boer
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Simsek M, Deben DS, Horjus CS, Bénard MV, Lissenberg‐Witte BI, Buiter HJC, van Luin M, Seinen ML, Mulder CJJ, Wong DR, de Boer NKH, van Bodegraven AA. Sustained effectiveness, safety and therapeutic drug monitoring of tioguanine in a cohort of 274 IBD patients intolerant for conventional therapies. Aliment Pharmacol Ther 2019; 50:54-65. [PMID: 31094013 PMCID: PMC6618772 DOI: 10.1111/apt.15280] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 12/30/2018] [Accepted: 04/04/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Tioguanine (or thioguanine) is an alternative drug for IBD patients who fail prior conventional immunomodulating therapy. AIM To report effectiveness, safety and therapeutic drug monitoring in a cohort of patients with prolonged tioguanine maintenance therapy. METHODS In this nationwide, multicentre study, medical records of tioguanine- using IBD patients were retrospectively reviewed. Response to therapy was defined as clinical effectiveness without (re)initiation of corticosteroids, concurrent biological therapy or surgical intervention. All adverse events that occurred during the follow-up were listed and graded according to the common terminology criteria (CTC). RESULTS Two hundred and seventy-four patients (female 63%, Crohn's disease in 68%) were included with median treatment duration of 51 months, 1567 patient-years of follow-up and median 20 mg/d tioguanine dosage. Tioguanine was tolerated in 79%, clinical effectiveness at 6 months was documented in 66% and sustained clinical effectiveness during 12 months in 51% of patients. Forty-one per cent of patients developed adverse events: 5% were graded as severe. Adverse events comprised infection requiring hospitalisation in three and skin cancer in eight patients (two melanomas). Asymptomatic nodular regenerative hyperplasia of the liver occurred in two out of 52 patients with liver biopsies (3.8%) and portal hypertension in three whereof one potentially associated with tioguanine (0.4%). Clinical effectiveness was correlated with 6-thioguanine nucleotide threshold concentrations >682 pmol/8×108 RBC (P < 0.05). CONCLUSIONS Long-term tioguanine therapy for at least 12 months was effective in 51% and well tolerated as a maintenance treatment for IBD in about 70% of patients. Adverse events were common, but mainly mild or moderate. 6-Thioguanine nucleotide threshold concentration ≥ 700 pmol/8×108 RBC is proposed as target level with higher odds for clinical effectiveness.
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Affiliation(s)
- Melek Simsek
- Department of Gastroenterology and HepatologyAmsterdam UMC, Vrije Universiteit Amsterdam, AG&M Research InstituteAmsterdamThe Netherlands
| | - Debbie S. Deben
- Department of Clinical Pharmacy, Clinical Pharmacology and Toxicology, Zuyderland Medical CentreSittard‐Geleen‐HeerlenThe Netherlands
| | - Carmen S. Horjus
- Department of Gastroenterology and HepatologyRijnstate HospitalArnhemThe Netherlands
| | - Melanie V. Bénard
- Department of Gastroenterology and HepatologyAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Birgit I. Lissenberg‐Witte
- Department of Epidemiology and BiostatisticsAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Hans J. C. Buiter
- Department of Clinical Pharmacology and PharmacyAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Matthijs van Luin
- Department of Clinical Pharmacology and PharmacyRijnstate HospitalArnhemThe Netherlands
| | - Margien L. Seinen
- Department of Gastroenterology and HepatologyAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Chris J. J. Mulder
- Department of Gastroenterology and HepatologyAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Dennis R. Wong
- Department of Clinical Pharmacy, Clinical Pharmacology and Toxicology, Zuyderland Medical CentreSittard‐Geleen‐HeerlenThe Netherlands
| | - Nanne K. H. de Boer
- Department of Gastroenterology and HepatologyAmsterdam UMC, Vrije Universiteit Amsterdam, AG&M Research InstituteAmsterdamThe Netherlands
| | - Adriaan A. van Bodegraven
- Department of Gastroenterology and HepatologyAmsterdam UMC, Vrije Universiteit AmsterdamAmsterdamThe Netherlands,Department of Gastroenterology, Geriatrics, Internal and Intensive Care Medicine (Co‐MIK)Zuyderland Medical Centre, Sittard‐Geleen‐HeerlenThe Netherlands
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Walker R, Kammermeier J, Vora R, Mutalib M. Azathioprine dosing and metabolite measurement in pediatric inflammatory bowel disease: does one size fit all? Ann Gastroenterol 2019; 32:387-391. [PMID: 31263361 PMCID: PMC6595924 DOI: 10.20524/aog.2019.0381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 04/09/2019] [Indexed: 12/12/2022] Open
Abstract
Background Azathioprine is widely used for the maintenance of remission in children with inflammatory bowel disease (IBD). Measuring thiopurine metabolites 6-thioguanine (6-TGN) and 6-methyl-mercaptopurine (6-MMP) can aid in optimizing treatment and preventing toxicity. We report a proactive approach combining early metabolite measurements with IBD activity index to achieve optimal azathioprine dosing. Methods The reporting of azathioprine dosing, IBD activity indexes and thiopurine metabolites was evaluated retrospectively in 40 children with IBD. Additional treatments and the effect of azathioprine on blood counts were also examined. Results Forty children (40% female) with IBD (26 Crohn's disease, 12 ulcerative colitis, and 2 unclassified IBD), mean age 12.2±3.4 years, were included in the study. The mean azathioprine dose was 1.3±0.4 mg/kg; mean 6-TGN level was 280±151 pmol/8 × 108 red blood cells (RBC) and mean 6-MMP level 1022±1007 pmol/8 × 108 RBC. Disease activity index (Crohn's and ulcerative colitis, pediatric specific) at the time of metabolite measurement was 6.5±8. Twenty-eight children did not require azathioprine dose adjustment, while it was increased in 12. Data from children with azathioprine monotherapy were analyzed separately and the results were similar. Conclusion Timely measurement of thiopurine metabolites and clinical assessment can provide a powerful tool to optimize azathioprine dosing and reduce serious adverse effects in children with IBD.
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Affiliation(s)
- Rebecca Walker
- Department of Paediatric Gastroenterology, Evelina London Children's Hospital, London, UK
| | - Jochen Kammermeier
- Department of Paediatric Gastroenterology, Evelina London Children's Hospital, London, UK
| | - Rakesh Vora
- Department of Paediatric Gastroenterology, Evelina London Children's Hospital, London, UK
| | - Mohamed Mutalib
- Department of Paediatric Gastroenterology, Evelina London Children's Hospital, London, UK
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Jarrar YB, Ghishan M. The Nudix Hydrolase 15 (NUDT15) Gene Variants among Jordanian Arab Population. Asian Pac J Cancer Prev 2019; 20:801-808. [PMID: 30909691 PMCID: PMC6825778 DOI: 10.31557/apjcp.2019.20.3.801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background: Nudix Hydrolase 15 gene (NUDT15) encodes nucleotide triphosphate diphosphatase which metabolizes
the purine analog drugs, such as anticancer thiopurine and anti-gout allopurinol. Genetic variants on Nudix Hydrolase
15 gene (NUDT15) gene effects the drug’s hydrolyses and hence increases the susceptibility to drug-induced toxicity.
The NUDT15 gene has been genotyped in various ethnic groups, however, it has not been genotyped among the
Middle Eastern Arab Jordanian population. Aim: The current study aimed to identify NUDT15 genetic variants among
Jordanian Arab population. Method: The DNA samples were isolated from leukocytes of 85 unrelated Jordanian
Arab volunteers. The coding regions of NUDT15 gene; Exon 1,2 and 3, in addition to some regions of intron 1,2 and
3’UTR, were amplified using polymerase chain reaction (PCR). the PCR products were then subjected to purification
and sequenced using Applied Biosystems Model (ABI3730x1). Results: Six NUDT15 genetic variants were found
among the volunteers.The results were as followed: A novel synonymous variant 36A>G on exon 1 (6%, 95%CI=
3- 9%), the intronic IVS1 +116C>T variant on intron 1 (0.6%, 95%CI= 0-2%), the non-synonymous variant on exon
3; 415C>T (0.6%, 95%CI= 0-2%), A novel non-synonymous variant on exon 3; 404C>A (0.6%, 95%CI= 0-2%) , and
two novel variants on 3’UTR ;502G>A (2%, 95%CI= 0.5-4%) and 588T>C (0.6%, 95%CI= 0-2%). NUDT15 36A>G
wasfound to be the most common allele among Jordanians was. In silico softwares predicted that the novel NUDT15
404C>A was harmful and affected NUDT15 enzyme’sstability and function. Furthermore, the frequency of NUDT15
IVS1 +116C>T , among Jordanians, showed to be significantly lower from what was reported in other ethnicities with
ap value > 0.05 on the other hand, the frequency of 415C>T variant showed to be similar to Europeans in contrast to
Asians and Indians that showed to be significantly lower (p value > 0.05). Conclusions: The frequency of NUDT15
genetic variants is low among the Jordanian volunteers and significantly lower than other ethnic groups. The findings of
this study may increase our understanding of the inter-individual variation in the response to purine analog drugs. Further
clinical studies are needed to investigate the influence of novel NUDT15 404C>A on drug metabolism and response.
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Affiliation(s)
| | - Maria Ghishan
- College of Pharmacy, AlZaytoonah University of Jordan, Amman, Jordan.
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25
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van der Schaft J, Thijs JL, Garritsen FM, Balak D, de Bruin-Weller MS. Towards personalized treatment in atopic dermatitis. Expert Opin Biol Ther 2019; 19:469-476. [PMID: 30768375 DOI: 10.1080/14712598.2019.1583204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION For many years, oral immunosuppressive drugs such as cyclosporine A, azathioprine, mycophenolic acid, and methotrexate were the only treatment options, in addition to topical treatment, in patients with severe atopic dermatitis (AD). Dupilumab, a monoclonal antibody targeting the IL-4 receptor alpha, is the first antibody-based treatment commercially available for the treatment of AD. In the near future, more antibody-based treatments and small molecules will become available in the treatment of severe AD. AREAS COVERED This review gives an overview of current and future therapies for severe AD, outlines options to optimize treatment with oral immunosuppressive drugs and gives an insight into the future of personalized treatment in AD. EXPERT OPINION Due to the heterogeneous character of AD, it is unlikely that all patients will respond equally to these newly tested drugs. We believe that biomarkers will lead to better identification of patients that will benefit from these highly specific, but expensive new treatments. In addition to a role for biomarkers in new treatments, the use of pharmacogenomic biomarkers can improve the efficacy of currently used oral immunosuppressive drugs in AD, which will still be needed for the treatment of moderate to severe AD in the coming years.
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Affiliation(s)
- Jorien van der Schaft
- a National Expertise Center for Atopic Dermatitis, Department of Dermatology and Allergology , University Medical Center Utrecht , Utrecht , The Netherlands
| | - Judith L Thijs
- a National Expertise Center for Atopic Dermatitis, Department of Dermatology and Allergology , University Medical Center Utrecht , Utrecht , The Netherlands
| | - Floor M Garritsen
- a National Expertise Center for Atopic Dermatitis, Department of Dermatology and Allergology , University Medical Center Utrecht , Utrecht , The Netherlands
| | - D Balak
- a National Expertise Center for Atopic Dermatitis, Department of Dermatology and Allergology , University Medical Center Utrecht , Utrecht , The Netherlands
| | - Marjolein S de Bruin-Weller
- a National Expertise Center for Atopic Dermatitis, Department of Dermatology and Allergology , University Medical Center Utrecht , Utrecht , The Netherlands
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Baseline risk assessment of patients with ulcerative colitis: does initial treatment selection influence outcomes? Eur J Gastroenterol Hepatol 2019; 31:80-85. [PMID: 30199472 DOI: 10.1097/meg.0000000000001249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND AIMS Treatment of ulcerative colitis (UC) typically follows a step-up approach and targets colonic mucosal healing. Although mucosal healing reduces the risk of colectomy, whether or not early treatment of patients with 'high-risk' features using tumor necrosis factor (TNF) antagonists reduces the risk of colectomy is not clear. Accordingly, we aim to evaluate the effect of baseline treatment selection according to the risk profile on 5-year outcomes and identify predictors of poor outcomes. PATIENTS AND METHODS Adult patients with confirmed UC were retrospectively identified. Baseline clinical and endoscopic data were collected. Patients were assigned a risk profile on the basis of the presence or absence of 'high-risk' features within the first 6 months of diagnosis including moderate to severe endoscopic disease, frequent need for steroids, steroid dependency, and disease involving the entire colon according to endoscopy. Treatment discordance was defined as treating 'high-risk' patients with medications other than anti-TNF therapy during the first 6 months after diagnosis or treating 'low-risk' patients with anti-TNF therapy within 6 months of diagnosis. The associations between discordance and 5-year colectomy and hospitalization rates were statistically calculated through regression analysis, as were predictors of outcomes. RESULTS A total of 108 patients were identified and studied. The median age was 36 years (interquartile range=27-50) and the average duration of disease was 6.6 (±3.1) years. Females comprised 62% of the cohort and 30% reported cigarette smoking. Seventy three percent of the patients were placed in the 'high-risk' category. The 5-year risk of colectomy was not statistically significantly higher in patients identified as 'high-risk' compared with those who were 'low-risk' (risk ratio=0.86, 95% confidence interval=0.24-3.1, P=0.81), nor was the 5-year risk of hospitalizations (risk ratio=1.63, 95% confidence interval=0.81-3.30, P=0.15). On the basis of stepwise model selection, colectomy was significantly predicted by discordance (P=0.039), arthritis (P=0.007), baseline stool frequency (P=0.019), Adalimumab use within the first 6 months of diagnosis (P=0.006), and pyoderma gangrenosum (P=0.049); hospitalization was predicted by discordance (P=0.018), baseline albumin concentrations (P=0.005), thromboembolism (P<0.005), thiopurine use within the first 6 months of diagnosis (P<0.005), Adalimumab use within the first 6 months of diagnosis (P=0.003), nationality (P=0.016), endoscopic severity (P=0.007), arthritis (P=0.005), and pyoderma gangrenosum (P=0.025). CONCLUSION Among other clinical parameters, discordance between baseline risk and treatment selection appears to be a significant predictor of outcomes in UC.
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Lim SZ, Chua EW. Revisiting the Role of Thiopurines in Inflammatory Bowel Disease Through Pharmacogenomics and Use of Novel Methods for Therapeutic Drug Monitoring. Front Pharmacol 2018; 9:1107. [PMID: 30349479 PMCID: PMC6186994 DOI: 10.3389/fphar.2018.01107] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022] Open
Abstract
Azathioprine and 6-mercaptopurine, often referred to as thiopurine compounds, are commonly used in the management of inflammatory bowel disease. However, patients receiving these drugs are prone to developing adverse drug reactions or therapeutic resistance. Achieving predefined levels of two major thiopurine metabolites, 6-thioguanine nucleotides and 6-methylmercaptopurine, is a long-standing clinical practice in ensuring therapeutic efficacy; however, their correlation with treatment response is sometimes unclear. Various genetic markers have also been used to aid the identification of patients who are thiopurine-sensitive or refractory. The recent discovery of novel Asian-specific DNA variants, namely those in the NUDT15 gene, and their link to thiopurine toxicity, have led clinicians and scientists to revisit the utility of Caucasian biomarkers for Asian individuals with inflammatory bowel disease. In this review, we explore the limitations associated with the current methods used for therapeutic monitoring of thiopurine metabolites and how the recent discovery of ethnicity-specific genetic markers can complement thiopurine metabolites measurement in formulating a strategy for more accurate prediction of thiopurine response. We also discuss the challenges in thiopurine therapy, alongside the current strategies used in patients with reduced thiopurine response. The review is concluded with suggestions for future work aiming at using a more comprehensive approach to optimize the efficacy of thiopurine compounds in inflammatory bowel disease.
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Affiliation(s)
| | - Eng Wee Chua
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Mezzina N, Campbell Davies SE, Ardizzone S. Nonbiological therapeutic management of ulcerative colitis. Expert Opin Pharmacother 2018; 19:1747-1757. [DOI: 10.1080/14656566.2018.1525361] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Nicolò Mezzina
- Gastrointestinal Unit, ASST Fatebenefratelli Sacco – Department of Biochemical and Clinical Sciences “L. Sacco”, University of Milan, Milano, Italy
| | | | - Sandro Ardizzone
- Gastrointestinal Unit, ASST Fatebenefratelli Sacco – Department of Biochemical and Clinical Sciences “L. Sacco”, University of Milan, Milano, Italy
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Abstract
Crohn's disease (CD) is a chronic, progressive, and destructive disease of the gastrointestinal tract. Although its incidence appears to be stable or decreasing in most countries in the North America and Europe, the incidence is rising rapidly in Asian countries. Immunomodulators and biologics are increasingly used to avoid long-term bowel damage and subsequent disability. Therapeutic drug monitoring facilitates optimizing thiopurines and anti-TNFs use. New biologic agents targeting various pathological pathways of CD are blooming in recent years, and the high cost of biologics and expiration of patents for several biologic agents have driven the utility of biosimilars for CD treatment. Here, the literature regarding the efficacy, safety, and withdrawal of the drugs, as well as the evolution of therapeutic targets will be reviewed.
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Affiliation(s)
- Hai Yun Shi
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Siew Chien Ng
- Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.
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30
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Abstract
Various medications used to treat inflammatory bowel diseases have been implicated to cause hepatotoxicity. These include sulfasalazine, 5-aminosalicylic acids, fluoroquinolones, metronidazole, thiopurines, methotrexate, anti-tumor necrosis factor agents, and alpha-4 integrin inhibitors. Various types of liver injury have been reported in association with these medications including hypersensitivity reaction, hepatocellular or cholestatic disease, nodular regenerative hyperplasia, liver fibrosis/cirrhosis, portal hypertension and autoimmune liver injury. The revised Roussel Uclaf Causality Assessment Method (RUCAM) provides a scoring system to determine the likelihood of whether a drug caused liver injury. Unfortunately some of the reported liver injuries in association with these treatments have not undergone RUCAM assessment. Therefore, although some of the reports used in this review article show an association between a medication and the reported liver injury, they may not necessarily show causation. In this article, we address methods of monitoring to detect these injuries. We also discuss the prognosis and recommended management plans when liver injury occurs.
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Samaan MA, Pavlidis P, Digby-Bell J, Johnston EL, Dhillon A, Paramsothy R, Akintimehin AO, Medcalf L, Chung-Faye G, DuBois P, Koumoutsos I, Powell N, Anderson SHC, Sanderson J, Hayee BH, Irving PM. Golimumab: early experience and medium-term outcomes from two UK tertiary IBD centres. Frontline Gastroenterol 2018; 9:221-231. [PMID: 30047549 PMCID: PMC6056089 DOI: 10.1136/flgastro-2017-100895] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 09/18/2017] [Accepted: 09/19/2017] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE To gain an understanding of the effectiveness of golimumab in a 'real-world' setting. DESIGN Retrospective cohort study using prospectively maintained clinical records. SETTING Two UK tertiary IBD centres. PATIENTS Patients with ulcerative colitis (UC) were given golimumab at Guy's & St Thomas and King's College Hospitals between September 2014 and December 2016. INTERVENTION Golimumab, a subcutaneously administered antitumour necrosis factor agent. MAIN OUTCOME MEASURES Clinical disease activity was assessed at baseline and at the first clinical review following induction therapy using the Simple Clinical Colitis Activity Index (SCCAI). Response was defined as an SCCAI reduction of 3 points or more. Remission was defined as an SCCAI of less than 3. RESULTS Fifty-seven patients with UC completed golimumab induction therapy. Paired preinduction and postinduction SCCAI values were available for 31 patients and fell significantly from 7 (2-19) to 3 (0-11) (p<0.001). To these 31, an additional 13 patients who did not have paired SCCAI data but stopped treatment due to documented 'non-response' in the opinion of their supervising clinician, were added. Among this combined cohort, 23/44 (52%) had a clinical response, 15/44 (34%) achieved remission and 13/44 (30%) achieved corticosteroid-free remission.Faecal calprotectin and CRP fell (FC: pre-induction: 1096 (15-4800) μg/g, post-induction: 114 (11-4800) μg/g, p = 0.011; n = 20; CRP: pre-induction: 4 (1-59) mg/L, post-induction: 2 (1-34) mg/L, p = 0.01 for n = 43). Post-induction endoscopy was carried out in 23 patients and a mucosal healing (Mayo 0 or 1) rate of 35% was observed. CONCLUSIONS Our experience mirrors previously reported real-world cohorts and demonstrates similar outcomes to those observed in randomised controlled trials. These data demonstrate a meaningful reduction in clinical, biochemical and endoscopic disease activity as well as a steroid-sparing effect in patients with previously refractory disease.
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Affiliation(s)
- Mark A Samaan
- IBD Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | | | | | - Emma L Johnston
- IBD Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Angad Dhillon
- IBD Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | | | | | - Lucy Medcalf
- IBD Service, King's College Hospital NHS Foundation Trust, London, UK
| | - Guy Chung-Faye
- IBD Service, King's College Hospital NHS Foundation Trust, London, UK
| | - Patrick DuBois
- IBD Service, King's College Hospital NHS Foundation Trust, London, UK
| | | | - Nick Powell
- IBD Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | | | - Jeremy Sanderson
- IBD Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Bu' Hussain Hayee
- IBD Service, King's College Hospital NHS Foundation Trust, London, UK
| | - Peter M Irving
- IBD Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
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Moreau B, Clement P, Theoret Y, Seidman EG. Allopurinol in combination with thiopurine induces mucosal healing and improves clinical and metabolic outcomes in IBD. Therap Adv Gastroenterol 2017; 10:819-827. [PMID: 29147133 PMCID: PMC5673019 DOI: 10.1177/1756283x17733657] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 06/15/2017] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Thiopurines, azathioprine (AZA) and 6-mercaptopurine (6-MP) are common maintenance medications for inflammatory bowel disease (IBD). Excessive methylation via thiopurine methyltransferase (TPMT) frequently causes therapeutic failure. Allopurinol reduces excessive 6-methyl-mercaptopurine (6-MMP) while enhancing 6-thioguanine (6-TGN) levels. The aim of this study was to evaluate clinical, metabolic and endoscopic impact of allopurinol in combination with low-dose thiopurine in IBD. METHODS Retrospective review of consecutive cases treated with allopurinol. Metabolites and their ratios (6-MMP/6-TGN) were compared pre- and post-allopurinol. Clinical and endoscopic remission were assessed. RESULTS Allopurinol (n = 66) reduced mean dose of AZA by 70% (p < 0.01). Baseline levels (SD) 6-TGN, 6-MMP and 6-MMP/6-TGN were 165 (64), 9388 (5234) and 59.8 (30.3), respectively. These values improved on allopurinol to 297 (102), 896 (1031) and 3.4 (4.0), respectively (p < 0.0001). Therapeutic 6-TGN level (>235) was achieved in 49/58 cases on allopurinol combination therapy, versus 9/58 monotherapy (p = 0.0001). Among the thiopurine failure group (40 patients), clinical remission or response was observed in 65% and 22% of patients, respectively. In the asymptomatic group with excessive 6-MMP, 11/14 achieved sustained remission on allopurinol. Repeat colonoscopy (n = 28) showed mostly endoscopic remission (67.9%) or improvement (17.8%). Few had unimproved lesions (14.3%). Importantly, 46% of cases had complete mucosal healing. Two patients had cancer on combination therapy (de novo pancreatic cancer and fatal recurrence of metastatic testicular cancer). Elevated transaminases were reduced on allopurinol (48.2 versus 6.9%) (p < 0.001); no change in leukopenic or infectious events occurred. CONCLUSION Allopurinol in combination with low-dose thiopurine corrected excessive 6-MMP levels, resulting in clinical remission and mucosal healing in the majority of cases. The potential cancer risk of allopurinol and thiopurine combination therapy needs further research.
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Affiliation(s)
- Brigitte Moreau
- Advanced IBD Fellow, Division of Gastroenterology, McGill University Health Center, Departments of Medicine and Pediatrics, Montreal, QC, Canada
| | - Pierre Clement
- Division of Gastroenterology, Gatineau Hospital, Gatineau, QC, Canada
| | - Yves Theoret
- Pharmacology Laboratory, Sainte Justine Hospital, Montreal, QC, Canada
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33
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Estevinho MM, Afonso J, Rosa I, Lago P, Trindade E, Correia L, Dias CC, Magro F. A Systematic Review and Meta-Analysis of 6-Thioguanine Nucleotide Levels and Clinical Remission in Inflammatory Bowel Disease. J Crohns Colitis 2017; 11:1381-1392. [PMID: 28981590 DOI: 10.1093/ecco-jcc/jjx089] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Thiopurines are widely used in the management of inflammatory bowel diseases. However, their minimum effective dose and dose-response relationship remain undefined, and evidence about their use in clinical practice is mostly heterogeneous. This systematic review and meta-analysis aimed: i] to assess the clinical value of 6-thioguanine nucleotide thresholds; and ii] to compare mean 6-thioguanine nucleotide concentrations between patients in clinical remission vs. those with active disease. METHODS A systematic literature search was carried out using four databases. Statistical heterogeneity was assessed with the I2 statistic followed by subgroup and sensitivity analyses. Odds ratios were computed using the random-effects model. RESULTS A total of 1384 records were identified in the systematic search, of which 25 were retained for further analysis: 22 were used in the cut-off comparisons and 12 were used in the 6-thioguanine nucleotide mean differences analysis. The global odds ratio for remission in patients with 6-thioguanine nucleotide levels above the predefined thresholds was 3.95 (95% confidence interval [CI], 2.63-5.94; p < 0.001]. When considering the different thresholds individually, the odd ratios were significant for values above 235 pmol/8 × 108 and 250 pmol/8 × 108 red blood cells [2.25 and 4.71, respectively]. Mean 6-thioguanine nucleotide levels were higher among patients in clinical remission, with a pooled difference of 63.37 pmol/8 × 108 red blood cells [95% CI, 31.81-94.93; p < 0.001]. CONCLUSIONS This study reinforces the link between 6-thioguanine nucleotide levels and clinical remission in inflammatory bowel diseases, also exploring the validity of specific 6-thioguanine nucleotide thresholds to predict clinical outcomes.
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Affiliation(s)
- Maria Manuela Estevinho
- Department of Pharmacology and Therapeutics, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Joana Afonso
- Department of Pharmacology and Therapeutics, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Isadora Rosa
- Gastroenterology Department, Instituto Portugue^s de Oncologia de Lisboa, Lisboa, Portugal
| | - Paula Lago
- Gastroenterology Department, Centro Hospitalar do Porto, Porto, Portugal
| | - Eunice Trindade
- Department of Pediatrics, Centro Hospitalar São João, Porto, Portugal
| | - Luís Correia
- Department of Gastroenterology and Hepatology, Hospital de Santa Maria, University of Lisbon, Lisbon, Portugal
| | - Cláudia Camila Dias
- Department of Community Medicine, Faculty of Medicine of the University of Porto, Porto, Portugal, and Centre for Health Technology and Services Research, Porto, Portugal
| | - Fernando Magro
- Department of Pharmacology and Therapeutics, Faculty of Medicine of the University of Porto, Porto, Portugal.,Department of Gastroenterology, Faculty of Medicine, Centro Hospitalar São João, Porto, Portugal
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Garritsen FM, van der Schaft J, Bruijnzeel-Koomen CAF, van Schaik RH, de Graaf M, van den Broek MPH, de Bruin-Weller MS. Thiopurine metabolite levels in patients with atopic dermatitis and/or chronic hand/foot eczema treated with azathioprine. J DERMATOL TREAT 2017; 29:375-382. [PMID: 28914560 DOI: 10.1080/09546634.2017.1373738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Azathioprine is frequently used in severe eczema. It is converted in the liver into active metabolites, including 6-thioguanine nucleotide (6-TGN) and methylated 6-methylmercaptopurine (6-MMP). In the past, the therapeutic potential of azathioprine may have not been fully utilized. Recent investigations on inflammatory bowel disease have led to a better understanding of azathioprine metabolism and optimizing treatment. OBJECTIVE To investigate whether measuring thiopurine metabolites in circulation can improve the effectiveness and safety of azathioprine treatment in patients with atopic dermatitis and/or chronic hand/foot eczema. METHODS Azathioprine metabolite levels were measured in eczema patients during maintenance treatment (Part I) and dose escalation (Part II). Clinical effectiveness, hepatotoxicity, and bone marrow suppression were analyzed and TPMT genotype was assessed. RESULTS A wide variation in metabolite levels in all dose groups was observed. In Part I (32 patients), there were no significant differences in 6-TGN levels between clinical responders and non-responders (p = .806). No hepatoxicity or myelotoxicity was observed. In Part II, all 6-TGN and 6-MMP levels increased during dose escalation. Hypermethylation was observed in 2/8 patients. CONCLUSION For individual eczema patients treated with azathioprine, routinely measuring 6-TGN and 6-MMP can be helpful in optimizing azathioprine dose, improving clinical effectiveness, and preventing side effects.
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Affiliation(s)
- F M Garritsen
- a Department of Dermatology , University Medical Center Utrecht , Utrecht , The Netherlands
| | - J van der Schaft
- a Department of Dermatology , University Medical Center Utrecht , Utrecht , The Netherlands
| | | | - R H van Schaik
- b Department of Clinical Chemistry , Erasmus University Medical Center Rotterdam , Rotterdam , The Netherlands.,c Laboratory for Clinical Chemistry and Hematology (LKCH) , University Medical Center Utrecht , Utrecht , The Netherlands
| | - M de Graaf
- a Department of Dermatology , University Medical Center Utrecht , Utrecht , The Netherlands
| | - M P H van den Broek
- d Department of Clinical Pharmacy , University Medical Center Utrecht , Utrecht , The Netherlands.,e Department of Clinical Pharmacy , St Antonius Hospital , Nieuwegein , The Netherlands
| | - M S de Bruin-Weller
- a Department of Dermatology , University Medical Center Utrecht , Utrecht , The Netherlands
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35
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Deswal S, Srivastava A. Role of Allopurinol in Optimizing Thiopurine Therapy in Patients with Autoimmune Hepatitis: A Review. J Clin Exp Hepatol 2017; 7:55-62. [PMID: 28348471 PMCID: PMC5357743 DOI: 10.1016/j.jceh.2017.01.115] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 01/29/2017] [Indexed: 12/12/2022] Open
Abstract
Autoimmune hepatitis (AIH) is a chronic immune mediated liver disease characterized by elevated transaminases, hyper gammaglobulinemia, presence of autoantibodies and interface hepatitis in the absence of a known etiology of liver disease. Thiopurines (azathioprine [AZA]/6-mercaptopurine [6MP]) and steroids remain the first line of treatment of AIH in both children and adults. However, a small proportion of AIH patients are either non-responders or develop side effects with AZA. The metabolism of AZA is complex and mediated by multiple enzymes. After absorption and getting converted to 6MP, it is converted to 6-thiouric acid, 6-methyl mercaptopurine (6MMP) and 6-thioguanine (6TG) by different enzymes. Elevated 6MMP levels are associated with hepatotoxicity and also poor efficacy due to simultaneous lower levels of 6TG, which is the active drug metabolite related to both efficacy and myelosuppression. Allopurinol, a xanthine oxidase inhibitor shifts the metabolism of AZA away from 6MMP toward 6TG. This combination of allopurinol with reduced dose of AZA is an alternative to more expensive and toxic second line therapy to induce remission in patients with AIH. This article discusses the mechanism of action of allopurinol in inducing response to AZA, reviews the published literature on this combination therapy and gives guidelines on the use of allopurinol in patients with AIH.
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Key Words
- 6-MTIMP, 6-methyl thioinosine monophosphate
- 6MMP, 6-methyl mercaptopurine
- 6MP, 6-mercaptopurine
- 6TG, 6-thioguanine
- AIH, autoimmune hepatitis
- ANA, antinuclear antibody
- AZA, azathioprine
- HGPRT, hypoxanthine guanine phosphoribosyl transferase
- IBD, inflammatory bowel disease
- IgG, immunoglobulin G
- LC, liver cytosol
- LKM, liver kidney microsomal
- PBC, primary biliary cirrhosis
- PSC, primary sclerosing cholangitis
- SMA, smooth muscle antibody
- TIMP, thioinosine monophosphate
- TPMT, thiopurine methyltransferase
- XO, xanthine oxidase
- allopurinol
- autoimmune hepatitis
- azathioprine
- hepatotoxicity
- overlap syndrome
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Affiliation(s)
- Shivani Deswal
- Department of Pediatrics, PGIMER and Dr RML Hospital, New Delhi, India
| | - Anshu Srivastava
- Department of Pediatric Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India,Address for correspondence: Anshu Srivastava, Additional Professor, Department of Pediatric Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, Uttar Pradesh, India. Tel.: +91 9935219497; fax: +91 522 2668017.Additional Professor, Department of Pediatric Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical SciencesLucknow226014India
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Jessurun N, van Puijenbroek EP, Otten LS, Mikes O, Vermeulen Windsant A, van Marum RJ, Grootens K, Derijks HJ. Inhibition of CYP2D6 with low dose (5 mg) paroxetine in patients with high 10-hydroxynortriptyline serum levels - a review of routine practice. Br J Clin Pharmacol 2017; 83:1149-1151. [PMID: 28133768 DOI: 10.1111/bcp.13201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 10/28/2016] [Accepted: 11/13/2016] [Indexed: 11/29/2022] Open
Affiliation(s)
- Naomi Jessurun
- Netherlands Pharmacovigilance Centre Lareb, 's-Hertogenbosch, The Netherlands
| | - Eugène P van Puijenbroek
- Netherlands Pharmacovigilance Centre Lareb, 's-Hertogenbosch, The Netherlands.,Department of Pharmacy: Pharmacotherapy and Pharmaceutical Care, University of Groningen, Groningen, The Netherlands
| | - Leila S Otten
- Department of Pharmacy, University of Utrecht, Utrecht, The Netherlands
| | - Oenone Mikes
- Reinier van Arkelgroep, 's-Hertogenbosch, The Netherlands
| | | | - Rob J van Marum
- Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands.,Department of General Practice & Elderly Care Medicine/EMGO Institute for Health and Care Research, VU University Medical Center Amsterdam, The Netherlands
| | - Koen Grootens
- Reinier van Arkelgroep, 's-Hertogenbosch, The Netherlands
| | - Hieronymus J Derijks
- Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands.,Utrecht Institute for Pharmaceutical Sciences, Division of Pharmacoepidemiology & Clinical Pharmacology, Utrecht University, Utrecht, The Netherlands
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Maráková K, Piešťanský J, Mikuš P. Determination of Drugs for Crohn’s Disease Treatment in Pharmaceuticals by Capillary Electrophoresis Hyphenated with Tandem Mass Spectrometry. Chromatographia 2016. [DOI: 10.1007/s10337-016-3213-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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38
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Meijer B, Mulder CJJ, van Bodegraven AA, de Boer NKH. How I treat my inflammatory bowel disease-patients with thiopurines? World J Gastrointest Pharmacol Ther 2016; 7:524-530. [PMID: 27867685 PMCID: PMC5095571 DOI: 10.4292/wjgpt.v7.i4.524] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/12/2016] [Accepted: 10/09/2016] [Indexed: 02/06/2023] Open
Abstract
Thiopurines are essential drugs to maintain remission in patients with inflammatory bowel disease (IBD). Thiopurines used in IBD are azathioprine (2.0-2.5 mg/kg), mercaptopurine (1.0-1.5 mg/kg) and thioguanine (0.2-0.3 mg/kg). However, mainly due to numerous adverse events associated with thiopurine use, almost 50% of the patients have to discontinue conventional thiopurine treatment. Extensive monitoring and the application of several treatment strategies, such as split-dose administration, co-administration with allopurinol or dose reduction/increase, may increase the chance of successful therapy. With this review, we provide practical information on how thiopurines are initiated and maintained in two thiopurine research centers in The Netherlands. We provide clinical information concerning safety issues, indications and management of therapy that may serve as a guide for the administration of thiopurines in IBD patients in daily practice.
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39
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Gaidos JKJ, Kane SV. Overcoming challenges of treating inflammatory bowel disease in pregnancy. Expert Rev Clin Immunol 2016; 12:871-8. [PMID: 26981845 DOI: 10.1586/1744666x.2016.1166958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Inflammatory bowel disease (IBD) is frequently diagnosed before or during the peak reproductive years. Overall management of inflammatory bowel disease is becoming more complex given the nuances involved with multiple mechanisms of action of the current treatment and need for therapeutic monitoring for safety and efficacy; another layer of complexity is added in the setting of a pregnancy. In this review, we have identified several key challenges that health care providers face when caring for patients with IBD during pregnancy. The goal of this review is to provide the most up-to-date evidence and provide our expert recommendations so that providers can more comfortably address patients' questions about pregnancy in IBD and the associated risks as well as optimize their care to ensure the best outcomes possible.
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Affiliation(s)
- Jill K J Gaidos
- a McGuire VA Medical Center , Virginia Commonwealth University , Richmond , VA , USA
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40
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Oral immune therapy: targeting the systemic immune system via the gut immune system for the treatment of inflammatory bowel disease. Clin Transl Immunology 2016; 5:e60. [PMID: 26900473 PMCID: PMC4735066 DOI: 10.1038/cti.2015.47] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 11/04/2015] [Accepted: 12/22/2015] [Indexed: 12/13/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are associated with an altered systemic immune response leading to inflammation-mediated damage to the gut and other organs. Oral immune therapy is a method of systemic immune modulation via alteration of the gut immune system. It uses the inherit ability of the innate system of the gut to redirect the systemic innate and adaptive immune responses. Oral immune therapy is an attractive clinical approach to treat autoimmune and inflammatory disorders. It can induce immune modulation without immune suppression, has minimal toxicity and is easily administered. Targeting the systemic immune system via the gut immune system can serve as an attractive novel therapeutic method for IBD. This review summarizes the current data and discusses several examples of oral immune therapeutic methods for using the gut immune system to generate signals to reset systemic immunity as a treatment for IBD.
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