Abstract
Background
Increased mucosa-associated E. coli are present in Crohn’s disease, but their role in pathogenesis is uncertain.
Aims
To assess efficacy and safety of an antibiotic/hydroxychloroquine combination effective against E. coli inside macrophages.
Methods
Adults with moderately active disease (CDAI > 220–450 plus C reactive protein ≥ 5 mg/l and/or fecal calprotectin > 250 μg/g) were randomized to receive (open-label) oral budesonide (Entocort CR 9 mg/day 8 weeks, 6 mg/day 2 weeks, 3 mg/day 2 weeks) or oral ciprofloxacin 500 mg bd, doxycycline 100 mg bd, hydroxychloroquine 200 mg tds for 4 weeks, followed by doxycycline 100 mg bd and hydroxychloroquine 200 mg tds for 20 weeks. Primary endpoints were remission (CDAI ≤ 150) at 10 weeks, remission maintained to 24 weeks, and remission maintained to 52 weeks. Patients not responding (CDAI fall by > 70) by 10 weeks were invited to crossover onto the alternative therapy.
Results
Fifty-nine patients were recruited across 8 sites. Including crossover, 39 patients received antibiotics/hydroxychloroquine and 39 received budesonide. At 10 weeks, 24 weeks, and 52 weeks on initial therapy, only 2/27, 2/27, and 1/27 were in remission on antibiotics/hydroxychloroquine compared with 8/32, 1/32, and 1/32 on budesonide (P = 0.092 at 10 weeks). Withdrawals by 10 weeks due to adverse events were seen in 15 receiving antibiotics/hydroxychloroquine and 6 budesonide. Results including crossover were more promising with 9/24 patients receiving antibiotics/hydroxychloroquine per protocol in remission by 24 weeks. No correlation was seen between response to antibiotics/hydroxychloroquine and ASCA/OmpC antibody status or disease location.
Conclusion
Overall results with this antibiotic/hydroxychloroquine combination were unimpressive, but long-term remission is seen in some patients and justifies further study.
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Data accessibility statement
Anonymized patient level data can be made available on reasonable request after approval by the Trial Management Committee and after signing a data access agreement. Proposals should be directed to the corresponding author. Full trial protocol is available on journal website.
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Acknowledgment
We are extremely grateful to the patients and clinical and research support staff who contributed to this trial; to the independent members of our Trial Steering Committee: Professor John Williams (Chair), Catherine Charles, and Ian Finnie; to our independent Data Monitoring Committee: Professor John McLaughlin (Chair), Ash Bassi, Jimmy Limdi, Graeme MacLennan, and Emma Wesley; to David Tyrer and Marc Williamson for data management and meeting coordination; to Debbie Atkinson for assistance with governance; and to our co-sponsors the University of Liverpool and the R and D Department of the Royal Liverpool and Broadgreen University Hospitals Trust. We are also very grateful to Prometheus® Laboratories Inc., San Diego, for performing the serological assays for ASCA and anti-bacterial antibodies.
Funding
This study was supported by a grant M/12/3 from Crohn’s and Colitis UK plus support from the National Institute of Health Research Clinical Research Network.
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JMR, PF, and GH designed the trial. JMR and then CP were Chief Investigators. SS, PF, JM, MP, AH, HD, TI, JB, and CP all recruited and treated patients. KM and KC collected and monitored the data. GH and JMR analyzed the data. JMR, CP, and GH drafted the manuscript. All authors critically revised the manuscript for important intellectual content.
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Conflicts of interest
JMR has been a member of advisory boards for Atlantic, Pharmacosmos, Procter and Gamble, and Vifor and Falk, has received speaking honoraria from Abbott, Allergan, Falk, Ferring, Glaxo Smith Kline, Merck, Procter and Gamble, Schering Plough, Shire, and Wyeth, and with the University of Liverpool and Provexis UK, holds a patent for use of a soluble fiber preparation as maintenance therapy for Crohn’s disease plus a patent for its use in antibiotic-associated diarrhea. The patent also held with the University of Liverpool and others in relation to use of modified heparins in cancer therapy. SS has received speaker fee from MSD, Actavis, Abbvie, Dr Falk pharmaceuticals, Shire, and received educational grant from MSD, Abbvie, and Actavis, and is an advisory board member for Abbvie, Dr Falk Pharma, and Vifor. PKF received a Shire Innovation Fund award and has received funded conference travel from Shire and Tillotts. GWH has provided consultancy for Provexis, Nutricia, and 4DPharma. AH has served as a consultant, advisory board member, or speaker for AbbVie, Arena, Atlantic, Bristol-Myers Squibb, Celgene, Celltrion, Falk, Ferring, Janssen, MSD, Napp Pharmaceuticals, Pfizer, Pharmacosmos, Shire, and Takeda. She also serves on the Global Steering Committee for Genentech. CP has received speaker fees from Vifor, payment for advisory board attendance from Dr Falk Pharma, and support for attendance to other meetings from Dr Falk Pharma and Vifor. The other authors have no competing interests.
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Rhodes, J.M., Subramanian, S., Flanagan, P.K. et al. Randomized Trial of Ciprofloxacin Doxycycline and Hydroxychloroquine Versus Budesonide in Active Crohn’s Disease. Dig Dis Sci 66, 2700–2711 (2021). https://doi.org/10.1007/s10620-020-06477-y
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DOI: https://doi.org/10.1007/s10620-020-06477-y