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J

James L. Alexander

imperial college london

31H-index
210Paper Count
3.9KCitation Count
Published Papers 57
Publication Date
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PAVFCOMS: An international Delphi consensus study to develop a pouch anal and vaginal fistula core outcome measurement set.
errJournal of Crohns & Colitis
IF8.7
err2026-01-01
err0
PREAI
errAnand, E.; Joshi, S.; Pelly, T.; Ghersin, I; Reza, L.; Gallinari, R.; Davies, D.; Alexander, J.; Sahnan, K.; Hart, A.; Lung, P. F.; Tozer, P.
errShare
errSave
Etrasimod Real-World Experience in Ulcerative Colitis: A multicentre cohort study
errJournal of Crohns & Colitis
IF8.7
err2026-01-01
err0
PREAI
errVayreda, E.; Vasconcellos, P.; Reis, S.; Matini, L.; Sharda, A. Punj; Dunbar, G.; Hall, R.; Estepa, T. Lopezosa; Williams, S.; Islam, S.; Javed, A.; Patel, K., V; Honap, S.; Mehta, S.; Walsh, A.; Alexander, J.; Irving, P. M.
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errSave
Ethnic differences in medication adherence and illness perception in Inflammatory Bowel Disease: A comparative study of White and South Asian patients
errJournal of Crohns & Colitis
IF8.7
err2026-01-01
err0
PREAI
errBalarajah, S.; Sundramoorthi, R.; Hussain, Y.; Nicholas, V; Prabhudev, H.; Perry, R.; Foulser, P.; Alexander, J.; Mullish, B.; Mehta, S.; Parkes, G.; Mohamed, Z.; Johnston, E.; Hart, A.; Orchard, T.; Hicks, L.; Williams, H.
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errSave
Development of a Core Outcome Measurement Set for fistulising perianal Crohn's disease (CAFCOMS): An international TOpClass Delphi consensus study
errJournal of Crohns & Colitis
IF8.7
err2026-01-01
err0
PREAI
errJoshi, S.; Anand, E.; Antoniou, A.; Alexander, J.; Iqbal, N.; Lundby, L.; Lung, P. F.; McNair, A.; Sahnan, K.; Stoker, J.; Hart, A.; Tozer, P.
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errSave
Disease phenotype affects therapeutic choice in late-onset IBD: a large-scale analysis
errJournal of Crohns & Colitis
IF8.7
err2026-01-01
err0
PREAI
errFoulser, P.; Balarajah, S.; Martinez-Gili, L.; Sundramoorthi, R.; Alexander, J.; Mullish, B.; Marchesi, J.; Parkes, M.; Orchard, T.; Hicks, L.; Williams, H.
errShare
errSave
A large-scale comparison of clinical outcomes to IBD therapies in White and South Asian ethnicities
erreClinicalMedicine
IF10
err2025-11-18
err0
errOAAI
errSharmili Balarajah; Laura Martinez-Gili; James L. Alexander; Benjamin H. Mullish; Robert W. Perry; Jia V. Li; Julian R. Marchesi; Miles Parkes; Timothy R. Orchard; Lucy C. Hicks; Horace R.T. Williams
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errSave
Evaluating the role of faecal calprotectin in older adults: a retrospective observational study
errBRITISH JOURNAL OF GENERAL PRACTICE
IF5.2
err2025-11-01
err0
errOAAI
errPerry, Robert W.; Foulser, Peter F. G.; Zhang, David; Perez, Pablo Martinez; Taylor, Shakira; Sharma, Angelica; Kumaran, Mithun; Balarajah, Sharmili; Radhakrishnan, Shiva T.; Sundramoorthi, Rohan; Chung, Carmen M. Y.; Mummery, David; Alexander, James L.; Majeed, Azeem; Hicks, Lucy C.; Williams, Horace R. T.
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errSave
Evaluation of Rectal Swabs as a Viable Alternative to Faecal Sampling for Calprotectin Measurement in IBD Patients
errAMERICAN JOURNAL OF GASTROENTEROLOGY
IF7.6
err2025-10-01
err0
PREAI
errPandiaraja, Madhumitha; Perry, Robert; Akintimehin, Abisoye; Hashi, Nasro; Busbridge, Mark; Courtney, Alan; Foulser, Peter; Radhakrishnan, Shiva; Balarajah, Sharmili; Mullish, Benjamin; Alexander, James; Marchesi, Julian; Hicks, Lucy; Williams, Horace
errShare
errSave
The emerging role of the gut microbiota in vaccination responses
errGut Microbes
IF11
err2025-08-30
err0
errOAAI
errV. Decker; K. Qureshi; L. Roberts; N. Powell; JR. Marchesi; BH. Mullish; JL. Alexander
errShare
errSave
Non-invasive fluorescence sensing reveals changes in intestinal barrier function and gastric emptying rate in a first-in-human study of Crohn’s disease
errTherapeutic Advances in Gastroenterology
IF3.4
err2025-08-13
err0
PREAI
errJonathan Gan; Qian Chen; Elena Monfort Sanchez; Nilanjan Mandal; Jiacheng Xu; Zixin Wang; Arjun Agarwal; Emmanuel Oluwatunmise; Pratik Ramkumar; Ash Salam; Elena Chekmeneva; María Gómez-Romero; Lynn Maslen; Sharmili Balarajah; Robert Perry; Karl King Yong; Jonathan Hoare; Nick Powell; James Alexander; James Avery; Hutan Ashrafian; Ara Darzi; Alex J. Thompson
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errSave
Operational considerations for the running of an NHS faecal microbiota transplant (FMT) service
errJournal of Hospital Infection
IF3.1
err2025-08-09
err0
PREAI
errB.H. Mullish; A. Javed; R. Ghani; F. Davies; A. Ghazy; N. Ranganathan; J.L. Alexander; L.A. Roberts; D. Chrysostomou; M.R. Thursz; J.R. Marchesi; M. Gilchrist; H.R.T. Williams
errShare
errSave
Deciphering the microbiome–metabolome landscape of an inflammatory bowel disease inception cohort
errGut Microbes
IF11
err2025-07-18
err0
errOAAI
errShiva T. Radhakrishnan; Benjamin H. Mullish; Marton L. Olbei; Nathan P. Danckert; Maria A. Valdivia-Garcia; Jose I. Serrano-Contreras; Despoina Chrysostomou; Sharmili Balarajah; Robert W. Perry; John P. Thomas; Lejla Potari-Gul; Dezso Modos; Lucy C. Hicks; Nick Powell; Timothy R. Orchard; Jia V. Li; Julian R. Marchesi; Tamas Korcsmaros; James L. Alexander; Horace R. T. Williams
errShare
errSave
Sub-optimal adherence with vaccination recommendations in immunosuppressed IBD patients in the post COVID-19 pandemic era
errJOURNAL OF CROHNS & COLITIS
IF8.7
err2025-01-22
err0
PREAI
errDecker, V; Shakweh, E.; Rejee, C.; Hart, A.; Alexander, J. L.
errShare
errSave
A large-scale comparison of clinical response to IBD therapies in white and non-white ethnicities
errJOURNAL OF CROHNS & COLITIS
IF8.7
err2025-01-22
err0
PREAI
errBalarajah, S.; Martinez-Gili, L.; Alexander, J. L.; Mullish, B. H.; Perry, R. W.; Li, J., V; Marchesi, J. R.; Parkes, M.; Orchard, T. R.; Hicks, L. C.; Williams, H. R.
errShare
errSave
Lumeneye digital proctoscopy is safe, and streamlines management of immune checkpoint inhibitor-induced colitis
errJOURNAL OF CROHNS & COLITIS
IF8.7
err2025-01-22
err0
PREAI
errIbraheim, H.; Alexander, J. L.; Balcorta, M.; Dolina, G.; Harrison, Z.; Young, K.; Powell, N.
errShare
errSave
Diverse Phenotypes, Consistent Treatment: A Study of 30 997 South Asian and White Inflammatory Bowel Disease Patients Using the UK Inflammatory Bowel Disease BioResource
errJOURNAL OF CROHNS & COLITIS
IF8.7
err2024-12-07
err1
errOAAI
errBalarajah, Sharmili; Martinez-Gili, Laura; Alexander, James Leslie; Mullish, Benjamin Harvey; Perry, Robert William; Li, Jia, V; Marchesi, Julian Roberto; UK IBD BioResource Invest, Miles; Parkes, Miles; Orchard, Timothy Robin; Hicks, Lucy Charlotte; Williams, Horace Richard Timothy
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errSave
Editorial: Updated COVID-19 Boosters-Tailoring Protection for Patients With IBD
errALIMENTARY PHARMACOLOGY & THERAPEUTICS
IF6.7
err2024-12-02
err1
errOAAI
errAlexander, James L.; Caldera, Freddy
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errSave
3D printed rectal swabs for assessing the gut microbiome, metabolome and inflammation
errSCIENTIFIC REPORTS
IF3.9
err2024-07-18
err1
errOAAI
errPerry, Robert W.; Mullish, Benjamin H.; Alexander, James L.; Shah, Raashi; Danckert, Nathan P.; Blanco, Jesus Miguens; Roberts, Lauren; Liu, Zhigang; Chrysostomou, Despoina; Radhakrishnan, Shiva T.; Balarajah, Sharmili; Barry, Rachael; Hicks, Lucy C.; Williams, Horace R. T.; Marchesi, Julian R.
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errSave
Investigation of long-term pressure on primary packaging materials and a biologic drug product for injection with a novel autoinjector concept
errDRUG DELIVERY AND TRANSLATIONAL RESEARCH
IF5.5
err2024-05-10
err0
errOAAI
errPrimavessy, Daniel; Piening, Max; Nightingale, Adam; Jameson, Heather; Latham, Matthew; Alexander, James; Buettner, Sarah; Pfrang, Juergen; Zapf, Andreas; Oakley, Tom; Brutsche, Andreas; Saaler-Reinhardt, Sigrid
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errSave
Faecal calprotectin in primary care: is its current use supported by the evidence?
errBRITISH JOURNAL OF GENERAL PRACTICE
IF5.2
err2024-02-29
err0
PREAI
errPerry, Robert W.; Mummery, David; Alexander, James L.; Hicks, Lucy C.; Williams, Horace R. T.
errShare
errSave

Research Directions

No research directions
Co-authors
Cooperation Journals
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David Cunningham
H-index: 153 · Papers: 2.1K
J
Jeremy K. Nicholson
H-index: 153 · Papers: 1.0K
A
Ara Darzi
H-index: 152 · Papers: 2.2K
A
Azeem Majeed
H-index: 129 · Papers: 1.2K
J
James Larkin
H-index: 128 · Papers: 1.3K
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