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Alexander JL, Ibraheim H, Richards C, Shum B, Pavlidis P, Hunter N, Teare JP, Wotherspoon A, Furness A, Turajlic S, Pickering L, Larkin J, Speight A, Papa S, Powell N. Oral beclomethasone dipropionate is an effective treatment for immune checkpoint inhibitor induced colitis. J Immunother Cancer 2022; 10:e005490. [PMID: 36113896 PMCID: PMC9486376 DOI: 10.1136/jitc-2022-005490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2022] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Systemic corticosteroids are the mainstay of treatment for immune checkpoint inhibitor induced (CPI) colitis but are associated with complications including life-threatening infection. The topically acting oral corticosteroid beclomethasone dipropionate (BD) is an effective treatment for mild to moderate flares of ulcerative colitis, and has fewer side effects than systemic corticosteroids. We hypothesized that BD would be an effective treatment for CPI-induced colitis. METHODS We performed a retrospective analysis of all patients who started BD for CPI-induced colitis at three UK cancer centers between November 2017 and October 2020. All patients underwent endoscopic assessment and biopsy. The initial regimen of BD was 5 mg once daily for 28 days. Data were collected from electronic patient records. Clinical outcomes were assessed at 28 days after initiation of treatment. RESULTS Twenty-two patients (14 male) with a median age of 64 (range 45-84) with CPI-induced colitis were treated with BD. At baseline, the median number of loose stools in a 24-hour period was six (common terminology criteria for adverse events, CTCAE grade diarrhea=2). Thirteen patients (59%) were dependent on systemic corticosteroids prior to starting BD. Baseline sigmoidoscopy showed moderate inflammation (Mayo Endoscopic Score (MES) = 2) in two patients (9%), mild inflammation (MES=1) in nine patients (41%) and normal findings (MES=0) in eleven patients (50%). Twenty patients (91%) had histopathological features of inflammation. All 22 patients (100%) had a clinical response to BD and 21 (95%) achieved clinical remission with a return to baseline stool frequency (CTCAE diarrhea=0). Ten patients (45%) had symptomatic relapse on cessation of BD, half within 7 days of stopping. All patients recaptured response on restarting BD. No adverse events were reported in patients treated with BD. CONCLUSIONS Topical BD represents an appealing alternative option to systemic immunosuppressive treatments to treat colonic inflammation. In this study, BD was effective and safe at inducing remission in CPI-induced colitis, which was refractory to systemic corticosteroids. Further randomized studies are needed to confirm these findings and determine the optimum dosing regimen.
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Affiliation(s)
- James L Alexander
- Department of Gastroenterology, Royal Marsden NHS Foundation Trust, London, UK
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Hajir Ibraheim
- Department of Gastroenterology, Royal Marsden NHS Foundation Trust, London, UK
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Camellia Richards
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Ben Shum
- Renal & Skin Units, Royal Marsden NHS Foundation Trust, London, UK
| | - Polychronis Pavlidis
- Experimental Immunobiology, King's College London, London, UK
- Department of Gastroenterology, King's College Hospital NHS Foundation Trust, London, UK
| | - Nikki Hunter
- Renal & Skin Units, Royal Marsden NHS Foundation Trust, London, UK
| | - Julian P Teare
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Andrew Wotherspoon
- Department of Histopathology, Royal Marsden NHS Foundation Trust, London, UK
| | - Andrew Furness
- Renal & Skin Units, Royal Marsden NHS Foundation Trust, London, UK
| | - Samra Turajlic
- Renal & Skin Units, Royal Marsden NHS Foundation Trust, London, UK
- Cancer Dynamics Laboratory, The Francis Crick Institute, London, UK
| | - Lisa Pickering
- Renal & Skin Units, Royal Marsden NHS Foundation Trust, London, UK
| | - James Larkin
- Renal & Skin Units, Royal Marsden NHS Foundation Trust, London, UK
| | - Ally Speight
- Department of Gastroenterology, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Sophie Papa
- School of Cancer and Pharmaceutical Sciences, King's College London, London, UK
| | - Nick Powell
- Department of Gastroenterology, Royal Marsden NHS Foundation Trust, London, UK
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
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Ma C, MacDonald JK, Nguyen TM, Vande Casteele N, Linggi B, Lefevre P, Wang Y, Feagan BG, Jairath V. Pharmacological Interventions for the Prevention and Treatment of Immune Checkpoint Inhibitor-Associated Enterocolitis: A Systematic Review. Dig Dis Sci 2022; 67:1128-1155. [PMID: 33770330 DOI: 10.1007/s10620-021-06948-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/08/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Patients treated with immune checkpoint inhibitors (ICIs) may develop ICI-associated enterocolitis, for which there is no approved treatment. AIMS We aimed to systematically review the efficacy and safety of medical interventions for the prevention and treatment of ICI-associated enterocolitis. METHODS MEDLINE, EMBASE, and the Cochrane Library were searched to identify randomized controlled trials (RCTs), cohort and case-control studies, and case series/reports, evaluating interventions (including corticosteroids, biologics, aminosalicylates, immunosuppressants, and fecal transplantation) for ICI-associated enterocolitis. Clinical, endoscopic, and histologic efficacy endpoints were evaluated. The Grading of Recommendations, Assessment, Development, and Evaluation criteria were used to assess overall quality of evidence. RESULTS A total of 160 studies (n = 1514) were included (one RCT, 3 retrospective cohort studies, 156 case reports/case series). Very low quality evidence from one RCT suggests budesonide is not effective for prevention of ICI-associated enterocolitis in ipilimumab-treated patients (relative risk 0.93 [95% confidence interval 0.56, 1.56]). Very low quality evidence suggests that corticosteroids, infliximab, and vedolizumab may be effective for treatment of ICI-associated enterocolitis by inducing clinical response and remission. No validated indices for measuring disease activity were used. Biologic treatment was used in 42% (641/1528) of patients, as reported in 97 studies. ICIs were discontinued in 65% (457/702) of patients, as reported in 63 studies. CONCLUSIONS Current treatment recommendations for ICI-associated enterocolitis are based on very low quality evidence, primarily from case reports and case series. Large-scale prospective cohort studies and RCTs are needed to develop prophylactic and therapeutic treatments to minimize interruption or discontinuation of oncological therapies.
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Affiliation(s)
- Christopher Ma
- Division of Gastroenterology and Hepatology, Departments of Medicine and Community Health Sciences, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, AB, T2N 4Z6, Canada.
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada.
| | - John K MacDonald
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada
| | - Tran M Nguyen
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada
| | - Niels Vande Casteele
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada
- Division of Gastroenterology, University of California San Diego, 4350 Executive Drive, Suite 210, La Jolla, San Diego, CA, 92121, USA
| | - Bryan Linggi
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada
| | - Pavine Lefevre
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada
| | - Yinghong Wang
- Department of Gastroenterology, Hepatology and Nutrition, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Brian G Feagan
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada
- Departments of Medicine, Epidemiology, and Biostatistics, Western University, 1151 Richmond St, London, ON, N6A 3K7, Canada
| | - Vipul Jairath
- Alimentiv Inc (Formerly Robarts Clinical Trials), 100 Dundas St, Suite #200, London, ON, N6A 5B6, Canada
- Departments of Medicine, Epidemiology, and Biostatistics, Western University, 1151 Richmond St, London, ON, N6A 3K7, Canada
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Tang L, Wang J, Lin N, Zhou Y, He W, Liu J, Ma X. Immune Checkpoint Inhibitor-Associated Colitis: From Mechanism to Management. Front Immunol 2021; 12:800879. [PMID: 34992611 PMCID: PMC8724248 DOI: 10.3389/fimmu.2021.800879] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 11/29/2021] [Indexed: 02/05/2023] Open
Abstract
Immune checkpoint inhibitors (ICIs), as one of the innovative types of immunotherapies, including programmed cell death-1 (PD-1), programmed cell death-ligand 1 (PD-L1), and cytotoxic T lymphocyte antigen 4 (CTLA-4) inhibitors, have obtained unprecedented benefit in multiple malignancies. However, the immune response activation in the body organs could arise immune-related adverse events (irAEs). Checkpoint inhibitor colitis (CIC) is the most widely reported irAEs. However, some obscure problems, such as the mechanism concerning gut microbiota, the confusing differential diagnosis with inflammatory bowel disease (IBD), the optimal steroid schedule, the reintroduction of ICIs, and the controversial prognosis features, influence the deep understanding and precise diagnosis and management of CIC. Herein, we based on these problems and comprehensively summarized the relevant studies of CIC in patients with NSCLC, further discussing the future research direction of this specific pattern of irAEs.
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Affiliation(s)
- Liansha Tang
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Jialing Wang
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Nan Lin
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yuwen Zhou
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Wenbo He
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Jiyan Liu
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xuelei Ma
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
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Abstract
Microscopic colitis (MC) is an inflammatory disease of the large intestine associated with urgent watery diarrhoea. MC may occur in people of all ages, although the disease primarily affects older women. Once believed to be rare, MC is now known to be a common cause of chronic watery diarrhoea in high-income countries, affecting 1 in 115 women and 1 in 286 men during their lifetime in Swedish population-based estimates. An inappropriate immune response to disturbances in the gut microenvironment is implicated in the pathogenesis of MC. Evidence also supports an underlying genetic basis for disease. The diagnosis of MC relies on clinical symptoms and microscopic assessment of colonic biopsy samples. MC is categorized histologically into collagenous colitis, lymphocytic colitis and their incomplete forms. The mainstay of treatment includes the use of budesonide, with or without adjunctive therapies, and withdrawal of offending drugs. Emerging studies suggest a role for biologicals and immunosuppressive therapies for the management of budesonide-refractory or budesonide-dependent disease. MC can have a substantial negative effect on patient quality of life. The outlook for MC includes a better understanding of the immune response, genetics and the microbiome in disease pathogenesis along with progress in disease management through robust clinical trials.
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Affiliation(s)
- Kristin E Burke
- Gastroenterology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA, USA.
| | - Mauro D'Amato
- Gastrointestinal Genetics Lab, CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Derio, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Siew C Ng
- Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, LK Institute of Health Science, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Darrell S Pardi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Jonas F Ludvigsson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Department of Paediatrics, Örebro University Hospital, Örebro University, Örebro, Sweden
| | - Hamed Khalili
- Gastroenterology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA, USA.
- Institute of Environmental Medicine, Nutrition Epidemiology, Karolinska Institutet, Solna, Sweden.
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Ibraheim H, Baillie S, Samaan MA, Abu-Sbeih H, Wang Y, Talley NJ, P Jones M, Powell N. Systematic review with meta-analysis: effectiveness of anti-inflammatory therapy in immune checkpoint inhibitor-induced enterocolitis. Aliment Pharmacol Ther 2020; 52:1432-1452. [PMID: 32920854 DOI: 10.1111/apt.15998] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 03/29/2020] [Accepted: 07/06/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Immune checkpoint inhibitors have revolutionised cancer treatment, but at the cost of off-target immune-mediated organ damage. This includes checkpoint inhibitor-induced enterocolitis which frequently requires hospitalisation and may be life-threatening. Empiric treatment typically includes corticosteroids and infliximab, although no large-scale studies have confirmed their effectiveness. AIM To investigate the effectiveness of anti-inflammatory therapy in checkpoint inhibitor-induced enterocolitis METHODS: We performed a systematic review and meta-analysis of studies reporting clinical outcomes of checkpoint inhibitor-induced enterocolitis in adult cancer patients treated with anti-inflammatory agents. We searched Medline, EMBASE, and the Cochrane library through April and extracted the proportion of patients responding to anti-inflammatory therapy. Variation in effect size was studied using a random-effects meta-regression analysis, with checkpoint inhibitor agent and tumour type as the variables. RESULTS Data were pooled from 1210 treated patients across 39 studies. Corticosteroids were effective in 59% (95% CI 54- 65) of patients, with response significantly more favourable in patients treated with anti-PD-1/L1 monotherapy, compared with anti-CTLA-4 containing regimens (78%, 95% CI 69-85 vs 56 %, 95% CI 49-63, P = 0.003), and more favourable in lung cancer patients compared with melanoma patients (88%, 95% CI 62-97 vs 55%, 95% CI 47-63, P = 0.04). Infliximab was effective in 81% (95% CI 73-87) of patients, and vedolizumab in 85% (95% CI 60-96). CONCLUSION Corticosteroids, infliximab and vedolizumab, are effective in the treatment of checkpoint inhibitor-induced enterocolitis. Checkpoint inhibitor regimen and cancer type were significant moderators in response to corticosteroid therapy.
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Affiliation(s)
- Hajir Ibraheim
- Division of Digestive Diseases, Faculty of Medicine, Imperial College London, London, UK.,The Royal Marsden Hospital, London, UK
| | | | - Mark A Samaan
- Department of Gastroenterology, Guy's and St Thomas' Hospital, London, UK
| | | | - Yinghong Wang
- The University of Texas MD Anderson Cancer Cente, Houston, TX, USA
| | | | - Michael P Jones
- Psychology Department, Macquarie University, North Ryde, NSW, Australia
| | - Nick Powell
- Division of Digestive Diseases, Faculty of Medicine, Imperial College London, London, UK.,The Royal Marsden Hospital, London, UK
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Paparoupa M, Stupperich S, Goerg-Reifenberg L, Wittig A, Schuppert F. Successful Treatment of an Immune-Mediated Colitis Induced by Checkpoint Inhibitor Therapy in a Patient with Advanced Melanoma. Case Rep Gastroenterol 2020; 14:554-560. [PMID: 33250697 PMCID: PMC7670360 DOI: 10.1159/000511252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 12/17/2022] Open
Abstract
Immune checkpoint inhibitors (ICIs) have been used as immunotherapeutic agents in several malignancies because of their ability to modify the T cell-mediated response against tumor cells. Dual checkpoint inhibition improves remission rates in patients with metastatic melanoma compared to monotherapy. However, a higher incidence of toxicity, including immune-related colitis, has been reported before. A 54-year-old female was diagnosed with malignant melanoma on her left upper arm. Because of progressive metastatic disease, a rescue therapy with nivolumab (Opdivo®) 1 mg/kg and ipilimumab (Yervoy®) 3 mg/kg was initiated and a clinical and radiological remission was achieved. Two weeks after completing the third cycle of the ICI therapy, the patient presented with persistent hemorrhagic diarrhea, nausea and abdominal pain. A diagnostic colonoscopy revealed multiple ulcerative lesions and hemorrhagic colitis of the sigmoid and rectum. Due to the ongoing treatment with nivolumab and ipilimumab, the diagnosis of a checkpoint inhibitor-induced colitis was made and immunosuppression with local and systemic steroids, such as mesalazine was initiated. In order to achieve a long-lasting steroids reduction, we decided to start with infliximab (Remicade® 5 mg/kg body weight i.v. every 2 weeks). Clinical remission was achieved and prednisolone could be subsequently discontinued. Infliximab, in combination with mesalazine, could successfully induce a long-lasting remission without steroids. The treatment of ICI-induced colitis did not lead to a reoccurrence of malignant melanoma after 2 years of follow-up.
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Affiliation(s)
- Maria Paparoupa
- Department of Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sophie Stupperich
- Department of Gastroenterology, Endocrinology, Diabetology and General Medicine, Klinikum Kassel, Kassel, Germany
| | | | - Andreas Wittig
- Department of Gastroenterology, Endocrinology, Diabetology and General Medicine, Klinikum Kassel, Kassel, Germany
| | - Frank Schuppert
- Department of Gastroenterology, Endocrinology, Diabetology and General Medicine, Klinikum Kassel, Kassel, Germany
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Powell N, Ibraheim H, Raine T, Speight RA, Papa S, Brain O, Green M, Samaan MA, Spain L, Yousaf N, Hunter N, Eldridge L, Pavlidis P, Irving P, Hayee B, Turajlic S, Larkin J, Lindsay JO, Gore M. British Society of Gastroenterology endorsed guidance for the management of immune checkpoint inhibitor-induced enterocolitis. Lancet Gastroenterol Hepatol 2020; 5:679-697. [PMID: 32553146 DOI: 10.1016/s2468-1253(20)30014-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 01/21/2020] [Accepted: 01/21/2020] [Indexed: 12/15/2022]
Abstract
Immune checkpoint inhibitors are a novel class of cancer treatment that have improved outcomes for a subset of cancer patients. They work by antagonising inhibitory immune pathways, thereby augmenting immune-mediated antitumour responses. However, immune activation is not cancer-specific and often results in the activation of immune cells in non-cancer tissues, resulting in off-target immune-mediated injury and organ dysfunction. Diarrhoea and gastrointestinal tract inflammation are common and sometimes serious side-effects of this type of therapy. Prompt recognition of gastrointestinal toxicity and, in many cases, rapid institution of anti-inflammatory or biologic therapy (or both) is required to reverse these complications. Management of organ-specific complications benefits from multidisciplinary input, including engagement with gastroenterologists for optimal management of immune checkpoint inhibitor-induced enterocolitis. In this British Society of Gastroenterology endorsed guidance document, we have developed a consensus framework for the investigation and management of immune checkpoint inhibitor-induced enterocolitis.
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MESH Headings
- Adrenal Cortex Hormones/therapeutic use
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antibodies, Monoclonal, Humanized/toxicity
- Antineoplastic Agents, Immunological/adverse effects
- Antineoplastic Agents, Immunological/therapeutic use
- Antineoplastic Agents, Immunological/toxicity
- Consensus
- Endoscopy/methods
- Endoscopy, Digestive System/methods
- Enterocolitis/chemically induced
- Enterocolitis/drug therapy
- Enterocolitis/metabolism
- Gastroenterology/organization & administration
- Gastrointestinal Diseases/chemically induced
- Gastrointestinal Diseases/diagnostic imaging
- Gastrointestinal Diseases/pathology
- Guidelines as Topic
- Humans
- Infliximab/therapeutic use
- Lactoferrin/metabolism
- Leukocyte L1 Antigen Complex/metabolism
- Neoplasms/drug therapy
- Patient Care Management/methods
- Societies, Medical/organization & administration
- Tumor Necrosis Factor-alpha/antagonists & inhibitors
- United Kingdom/epidemiology
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Affiliation(s)
- Nick Powell
- Division of Digestive Diseases, Faculty of Medicine, Imperial College London, UK; The Royal Marsden Hospital, London, UK.
| | - Hajir Ibraheim
- Division of Digestive Diseases, Faculty of Medicine, Imperial College London, UK; The Royal Marsden Hospital, London, UK
| | - Tim Raine
- Addenbrooke's Hospital, Cambridge University Teaching Hospitals NHS Foundation Trust, Cambridge, UK
| | - Richard A Speight
- Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Institute of Cellular Medicine, Newcastle University, Newcastle, UK
| | - Sophie Papa
- School of Cancer and Pharmaceutical Sciences, King's College London, London, UK; Department of Medical Oncology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Oliver Brain
- Translational Gastroenterology Unit, John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Oxford, UK
| | - Michael Green
- Department of Histopathology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Mark A Samaan
- Department of Gastroenterology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | | | | | | | | | - Polychronis Pavlidis
- Department of Gastroenterology, Guy's and St Thomas' NHS Foundation Trust, London, UK; Centre for Inflammation and Cancer Immunology, King's College London, London, UK
| | - Peter Irving
- Department of Gastroenterology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Bu'Hussain Hayee
- Department of Gastroenterology, King's College Hospital, London, UK
| | - Samra Turajlic
- The Royal Marsden Hospital, London, UK; Cancer Dynamics Laboratory, The Francis Crick Institute, London, UK
| | | | - James O Lindsay
- The Royal London Hospital, Barts Health NHS Trust, London, UK; Centre for Immunobiology, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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