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Professor Rupert Leong

Clinical Professor
Medicine: Concord Clinical School

Phone

612 97676111

Fax

612 97676767

Biographical details

Professor Rupert Leong MBBS, FRACP, MD, AGAF is a Senior Staff Specialist gastroenterologist, Director of Endoscopy and Head of the Inflammatory Bowel Disease Services at Concord Hospital, Professor of Medicine at University of Sydney and Macquarie University, and founding director of IBD Sydney, Australia. He has an international reputation for the management of inflammatory bowel diseases. Prof Leong has made a substantial contribution to research through high quality peer-reviewed scientific journal publications. Amongst these are senior authorship of national and international consensus guidelines in Australia and in the Asia-Pacific region. He serves as the Associate editor of the Therapeutic Advances in Gastroenterology and is on the international editorial boards of Alimentary Pharmacology and Therapeutics, and Gastrointestinal Endoscopy. He is an executive member of a number of government bodies including the Agency for Clinical Innovation of NSW Health nominated for expertise in IBD and the Cancer Council of Australia Working Party on the revision of the clinical practice guidelines for the prevention, early detection and management of colorectal cancer. Professor Leong was awarded the American Gastroenterological Association Fellowship by invitation on the basis of research excellence in 2012 and the UNSW Paper of the Year Prize in 2015.

Research interests

Gastroenterology

Immunology

Imaging

Endoscopy

Intestinal permeability

Dysplasia, colorectal cancer, surveillance, screening

Quantitative analysis research

Biomarkers, proteomics

Teaching and supervision

Gastroenterology

Inflammatory bowel diseases

Awards and honours

2017 Nimmo Lecturership, Adelaide

2016 RACP Trans Tasman Lecturership, NZ Society of Gastroenterology

2015 Emerging Leader GESA

2012 American Gastroenterological Association Fellowship

2011 NHMRC CD Fellow

2011 GESA IBD Award

2010 GESA Career Development Award
2009 ACMA Young Achiever of the Year
2008 GESA Abbott Grant
2007 Cancer Institute of NSW Clinical Fellowship
2007 AGW Poster of Merit x 2
2006 Endeavour Cheung Kong Fellowship
2006 Medical Research Foundation Scholarship: SWSCS
2006 RACP Research Fellowship
2006 UNSW Faculty Research Grant
2005 UNSW Clinical School Tutor of the year prize
2005 UNSW Clinical School Travel Scholarship
2005 Health Research Foundation Sydney South West
2004 AstraZeneca Emerging Leader
2004 UNSW Faculty Research Grant
2003 Culturally and Linguistically Diverse Communities Access Seeding Grant
2002 Australian Gastroenterology Week Poster of Merit
2001 & 2002 Athelstan and Amy Saw Overseas Research Fellowship
2000 Novartis Prize for Young Clinical & Scientific Investigators
1999 GlaxoWellcome Gastroenterology Research Prize

Themes

Cancer, Infection and Immunological Conditions

Keywords

Colorectal cancers, Epidemiology, Immunology, Endoscopy, inflammatory bowel disease

Approaches

Clinical Trials, Epidemiology, Immunology

Clinical speciality

Gastroenterology and Hepatology

International links

Hong Kong S.A.R.

(Chinese University of Hong Kong) Professor Joseph Sung, Vice Chancellor Professor Francis Chan, Dean Professor Siew Ng, Gastroenterologist

Publications

By Type

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Journals

Pudipeddi, A., Corte, C., Ward, M., De Cruz, P., Lan-San Fung, C., Redmond, D., Chan, W., Mourad, F., Kermeen, M., Leong, R., Paramsothy, S., et al (2024). Effects of Thiopurine Withdrawal on Vedolizumab-Treated Patients With Ulcerative Colitis: A Randomized Controlled Trial. Clinical Gastroenterology and Hepatology. [More Information]
Chetwood, J., Tran, Y., Subramanian, S., Smith, P., Iborra, M., Buisson, A., Paramsothy, S., Leong, R. (2024). Intravenous Versus Subcutaneous Infliximab in Inflammatory Bowel Disease: A Systematic Review and Meta-analysis. Journal of Crohn's and Colitis, 18(9), 1440-1449. [More Information]
Chaemsupaphan, T., Leong, R., Vande Casteele, N., Seow, C. (2024). Review article: Optimisation of biologic (monoclonal antibody) therapeutic response in inflammatory bowel disease. Alimentary Pharmacology and Therapeutics, 60(9), 1234-1243. [More Information]
Ahuja, V., Sollano, J., Pisespongsa, P., Mustaffa, N., Banerjee, R., Leow, A., Raja Ali, R., Chuah, S., Palaniappan, S., Ooi, C., Leong, R., et al (2024). Ten missteps in the management of inflammatory bowel disease in Asia: An expert report by the Asian Pacific Association of Gastroenterology Working Group on Inflammatory Bowel Disease. Journal of Gastroenterology and Hepatology. [More Information]
Anderson, E., Waller, K., Tamilarasan, A., Lin, H., Paramsothy, S., Leong, R. (2023). Adalimumab originator versus adalimumab biosimilars in inflammatory bowel disease in Australia. Expert Opinion on Biological Therapy. [More Information]
Laube, R., Ochieng, A., Seow, C., Christensen, B., Flanagan, E., Kennedy, D., Mountifield, R., Seeho, S., Shand, A., Williams, A., Leong, R. (2023). Australian inflammatory bowel disease consensus statements for preconception, pregnancy and breast feeding. Gut. [More Information]
Au, M., Low, P., Rennie, M., Mohseni, M., Song, Y., Kim, N., Baraty, B., Mitrev, N., He, E., Ho, V., Leong, R., et al (2023). Determining efficacy of dynamic multimedia bowel preparation instructions versus standard instructions on adenoma detection and patient reported measures (DIGICLEAN trial): A study protocol for a multicentre, colonoscopist-blinded, randomised controlled trial. BMJ Open, 13(7). [More Information]
Pudipeddi, A., Fung, C., Christensen, B., Bryant, R., Subramaniam, K., Chetwood, J., Paramsothy, S., Leong, R. (2023). Knowledge and attitudes towards the use of histological assessments in ulcerative colitis by gastroenterologists vs pathologists. World Journal of Gastroenterology, 29(2), 378-389. [More Information]
Liu, E., Laube, R., Leong, R., Fraser, A., Selinger, C., Limdi, J. (2023). Managing Inflammatory Bowel Disease in Pregnancy: Health Care Professionals' Involvement, Knowledge, and Decision Making. Inflammatory Bowel Diseases, 29(4), 522-530. [More Information]
Haifer, C., Luu, L., Paramsothy, S., Borody, T., Leong, R., Kaakoush, N. (2023). Microbial determinants of effective donors in faecal microbiota transplantation for UC. Gut, 72(1), 90-100. [More Information]
Selinger, C., Laube, R., Steed, H., Brookes, M., Leong, R. (2023). Planning to conceive within a year is associated with better pregnancy-specific disease-related patient knowledge and better medication adherence in women of childbearing age with inflammatory bowel disease. Therapeutic Advances in Gastroenterology, 16. [More Information]
Chetwood, J., Leong, R., Gupta, S., Subramaniam, K., De Cruz, P., Moore, G., An, Y., Connor, S., Kermeen, M., Paramsothy, S. (2023). Ustekinumab as induction and maintenance therapy for ulcerative colitis–national extended follow-up and a review of the literature. Expert Opinion on Drug Safety. [More Information]
Waller, K., Leong, R., Paramsothy, S. (2022). An update on fecal microbiota transplantation for the treatment of gastrointestinal diseases. Journal of Gastroenterology and Hepatology, 37(2), 246-255. [More Information]
Pudipeddi, A., Paramsothy, S., Leong, R. (2022). Combination Therapy of Immunomodulators With Non-Anti-Tumor Necrosis Factor Agents in Inflammatory Bowel Disease: Need More Evidence? Clinical Gastroenterology and Hepatology, 20(3), e640-e641. [More Information]
Ma, C., Hanzel, J., Panaccione, R., Sandborn, W., D'Haens, G., Ahuja, V., Atreya, R., Bernstein, C., Bossuyt, P., Bressler, B., Leong, R., et al (2022). CORE-IBD: A Multidisciplinary International Consensus Initiative to Develop a Core Outcome Set for Randomized Controlled Trials in Inflammatory Bowel Disease. Gastroenterology. [More Information]
Au, M., Mitrev, N., Leong, R., Kariyawasam, V. (2022). Dual biologic therapy with ocrelizumab for multiple sclerosis and vedolizumab for Crohn’s disease: A case report and review of literature. World Journal of Clinical Cases, 10(8), 2569-2576. [More Information]
Danese, S., Sands, B., Abreu, M., O'Brien, C., Bravata, I., Nazar, M., Miao, Y., Wang, Y., Rowbotham, D., Leong, R., et al (2022). Early Symptomatic Improvement After Ustekinumab Therapy in Patients With Ulcerative Colitis: 16-Week Data From the UNIFI Trial. Clinical Gastroenterology and Hepatology, 20(12), 2858-2867.e5. [More Information]
Lee, C., Huang, S., Hsu, P., Leong, R., Nanan, B., Nanan, R. (2022). Low-dose IL-2 may enhance the effect of vedolizumab. Scandinavian Journal of Gastroenterology, 57(11), 1404-1405. [More Information]
Haifer, C., Paramsothy, S., Kaakoush, N., Saikal, A., Ghaly, S., Yang, T., Luu, L., Borody, T., Leong, R. (2022). Lyophilised oral faecal microbiota transplantation for ulcerative colitis (LOTUS): a randomised, double-blind, placebo-controlled trial. The Lancet Gastroenterology & Hepatology, 7(2), 141-151. [More Information]
Laube, R., Selinger, C., Leong, R. (2022). Medication adherence in women with IBD of childbearing age likely associated with disease knowledge. Therapeutic Advances in Gastroenterology, 15, 1-8. [More Information]
Haifer, C., Paramsothy, S., Kaakoush, N., Leong, R. (2022). Oral faecal microbiota transplantation in ulcerative colitis – Authors' reply. The Lancet Gastroenterology & Hepatology, 7(4), 286-287. [More Information]
Chin, Y., Jain, S., Lee, M., Ng, C., Lin, S., Mai, A., Muthiah, M., Foo, F., Sundar, R., Ong, D., Leong, R., et al (2022). Small bowel adenocarcinoma in Crohn’s disease: a systematic review and meta-analysis of the prevalence, manifestation, histopathology, and outcomes. International Journal of Colorectal Disease, 37(1), 239-250. [More Information]
Tamilarasan, A., Tran, Y., Paramsothy, S., Leong, R. (2022). The diagnostic yield of pan-enteric capsule endoscopy in inflammatory bowel disease: A systematic review and meta-analysis. Journal of Gastroenterology and Hepatology, 37(12), 2207-2216. [More Information]
Zhang, E., Christensen, B., Macrae, F., Leong, R. (2022). The Effects of the COVID Pandemic on Patients with IBD: Lessons Learned and Future Directions. Journal of Clinical Medicine, 11(23), 7002. [More Information]
Bustamante, S., Yau, Y., Boys, V., Chang, J., Paramsothy, S., Pudipeddi, A., Leong, R., Wasinger, V. (2022). Tryptophan Metabolism ‘Hub’ Gene Expression Associates with Increased Inflammation and Severe Disease Outcomes in COVID-19 Infection and Inflammatory Bowel Disease. International Journal of Molecular Sciences, 23(23). [More Information]
Pudipeddi, A., Ko, Y., Paramsothy, S., Leong, R. (2022). Vedolizumab has longer persistence than infliximab as a first-line biological agent but not as a second-line biological agent in moderate-to-severe ulcerative colitis: real-world registry data from the Persistence Australian National IBD Cohort (PANIC) study. Therapeutic Advances in Gastroenterology, 15, 1.76E+16. [More Information]
Laube, R., Tran, Y., Paramsothy, S., Leong, R. (2021). Assisted Reproductive Technology in Crohn's Disease and Ulcerative Colitis: A Systematic Review and Meta-Analysis. American Journal of Gastroenterology, 116(12), 2334-2344. [More Information]
Williams, A., Paramsothy, R., Wu, N., Ghaly, S., Leach, S., Paramsothy, S., Corte, C., O'Brien, C., Burke, C., Wark, G., et al (2021). Australia IBD Microbiome (AIM) Study: protocol for a multicentre longitudinal prospective cohort study. BMJ Open, 11(2), e042493. [More Information]
Aluzaite, K., Greveson, K., Ben-Horin, S., Leong, R., Haj, O., Schultz, M. (2021). Barriers to international travel in inflammatory bowel disease patients. Journal of Travel Medicine, 28(1), 1-8. [More Information]
Yau, Y., Wasinger, V., Hirten, R., Huntsman, M., Stylli, J., Shimizu, J., Yajnik, V., Smith, J., Lee, S., Singh, S., et al (2021). Current trends in IBD - Development of mucosal-based biomarkers and a novel minimally invasive recoverable sampling system. Inflammatory Bowel Diseases, 27, S17-S24. [More Information]
Mourad, F., Leong, R., Kariyawasam, V. (2021). Early thiopurine maintenance and reduced colectomy rate in ulcerative colitis: fact or fiction? European Journal of Gastroenterology and Hepatology, 33(1S Suppl 1), e1106. [More Information]
Kariyawasam, V., Mourad, F., Mitrev, N., Paramsothy, S., Selinger, C., Katelaris, P., Jones, B., McDonald, C., Barr, G., Chapman, G., et al (2021). Early thiopurine maintenance is associated with reduced proximal disease progression and colectomy rate in ulcerative colitis. European Journal of Gastroenterology and Hepatology, 33(12), 1524-1532. [More Information]
Pudipeddi, A., Han, J., Leong, R. (2021). Hepatobiliary and Pancreatic: Right upper quadrant pain and positive Murphy's sign. Journal of Gastroenterology and Hepatology, 36(6), 1390. [More Information]
Pudipeddi, A., Liu, J., Kariyawasam, V., Borody, T., Cowlishaw, J., McDonald, C., Katelaris, P., Chapman, G., Corte, C., Lemberg, D., et al (2021). High prevalence of Crohn disease and ulcerative colitis among older people in Sydney. Medical Journal of Australia, 214(8), 365-370. [More Information]
Haifer, C., Paramsothy, S., Borody, T., Clancy, A., Leong, R., Kaakoush, N. (2021). Long-term bacterial and fungal dynamics following oral lyophilized fecal microbiota transplantation in clostridioides difficile infection. msystems, 6(1), e00905-20. [More Information]
Haifer, C., Saikal, A., Paramsothy, R., Kaakoush, N., Leong, R., Borody, T., Kamm, M., Paramsothy, S. (2021). Response to faecal microbiota transplantation in ulcerative colitis is not sustained long term following induction therapy. Gut, 70(11), 2210-2211. [More Information]
Leong, R. (2021). Risk mitigation in Crohn's disease and ulcerative colitis: Session four summary. Journal of Gastroenterology and Hepatology, 36(S1), 27-28. [More Information]
Ko, Y., Paramsothy, S., Yau, Y., Leong, R. (2021). Superior treatment persistence with ustekinumab in Crohn’s disease and vedolizumab in ulcerative colitis compared with anti-TNF biological agents: real-world registry data from the Persistence Australian National IBD Cohort (PANIC) study. Alimentary Pharmacology and Therapeutics, 54(3), 292-301. [More Information]
Chin, Y., Ng, C., Lin, S., Jain, S., Kong, G., Koh, J., Tan, D., Ong, D., Muthiah, M., Chong, C., Leong, R., et al (2021). Systematic review with meta-analysis: The prevalence, risk factors and outcomes of upper gastrointestinal tract crohn's disease. Digestive and Liver Disease, 53(12), 1548-1558. [More Information]
Sanagapalli, S., McGuire, J., Leong, R., Patel, K., Raeburn, A., Abdul-Razakq, H., Plumb, A., Banks, M., Haidry, R., Lovat, L., et al (2021). The Clinical Relevance of Manometric Esophagogastric Junction Outflow Obstruction Can Be Determined Using Rapid Drink Challenge and Solid Swallows. American Journal of Gastroenterology, 116(2), 280-288. [More Information]
Laube, R., Paramsothy, S., Leong, R. (2021). Use of medications during pregnancy and breastfeeding for Crohn's disease and ulcerative colitis. Expert Opinion on Drug Safety, 20(3), 275-292. [More Information]
Haifer, C., Kelly, C., Paramsothy, S., Andresen, D., Papanicolas, L., McKew, G., Borody, T., Kamm, M., Costello, S., Andrews, J., van der Poorten, D., Leong, R., et al (2020). Australian consensus statements for the regulation, production and use of faecal microbiota transplantation in clinical practice. Gut, 69(5), 801-810. [More Information]
Haifer, C., Paramsothy, S., Leong, R. (2020). Faecal microbiota transplantation as an elixir of youth. Hepatobiliary Surgery and Nutrition, 9(4), 488-489. [More Information]
Chan, W., Kariyawasam, V., Kim, S., Pudipeddi, A., Paramsothy, S., Shim, H., Mourad, F., Ding, N., Ferrante, M., Leong, R. (2020). Gastroenterologists' preference and risk perception on the use of immunomodulators and biological therapies in elderly patients with ulcerative colitis: an international survey. European Journal of Gastroenterology and Hepatology, 32, 976-983. [More Information]
Laube, R., Yau, Y., Selinger, C., Seow, C., Thomas, A., Chuah, S., Hilmi, I., Mao, R., Ong, D., Ng, S., Leong, R., et al (2020). Knowledge and Attitudes Towards Pregnancy in Females with Inflammatory Bowel Disease: An International, Multi-centre Study. Journal of Crohn's and Colitis, 14(9), 1248-1255. [More Information]
Wasinger, V., Lu, K., Yau, Y., Nash, J., Lee, J., Chang, J., Paramsothy, S., Kaakoush, N., Mitchell, H., Leong, R. (2020). Spp24 is associated with endocytic signalling, lipid metabolism, and discrimination of tissue integrity for ‘leaky-gut’ in inflammatory bowel disease. Scientific Reports, 10(1), 12932. [More Information]
Haifer, C., Leong, R., Paramsothy, S. (2020). The role of faecal microbiota transplantation in the treatment of inflammatory bowel disease. Current Opinion in Pharmacology, 55, 8-16. [More Information]
Leong, R. (2020). The significance of granulomas in Crohn's disease and inflammatory bowel disease epidemiology in Asia. Journal of Gastroenterology and Hepatology, 35(4), 523-524. [More Information]
Sanagapalli, S., Plumb, A., Maynard, J., Leong, R., Sweis, R. (2020). The timed barium swallow and its relationship to symptoms in achalasia: Analysis of surface area and emptying rate. Neurogastroenterology and Motility, 32(12), e13928. [More Information]
Shir Ali, M., Laube, R., Selvaratnam, S., Leong, R. (2020). Tioguanine as an alternative immunomodulator in inflammatory bowel diseases. Internal Medicine Journal, 50(11), 1434-1435. [More Information]
Wehrhahn, M., Keighley, C., Kurtovic, J., Knight, D., Hong, S., Hutton, M., Lyras, D., Wang, Q., Leong, R., Borody, T., et al (2019). A series of three cases of severe Clostridium difficile infection in Australia associated with a binary toxin producing clade 2 ribotype 251 strain. Anaerobe, 55, 117-123. [More Information]
Kariyawasam, V., Kim, S., Mourad, F., Selinger, C., Katelaris, P., Jones, B., McDonald, C., Barr, G., Chapman, G., Colliwshaw, J., Lunney, P., Middleton, K., Huang, T., et al (2019). Comorbidities Rather Than Age Are Associated With the Use of Immunomodulators in Elderly-onset Inflammatory Bowel Disease. Inflammatory Bowel Diseases, 25(8), 1390-1398. [More Information]
Selvaratnam, S., Gullino, S., Shim, L., Lee, E., Lee, A., Paramsothy, S., Leong, R. (2019). Epidemiology of inflammatory bowel disease in South America: A systematic review. World Journal of Gastroenterology, 25(47), 6866-6875. [More Information]
Danese, S., Vermeire, S., Hellstern, P., Panaccione, R., Rogler, G., Fraser, G., Desreumaux, P., Leong, R., Comer, G., Cataldi, F., et al (2019). Randomised trial and open-label extension study of an anti-interleukin-6 antibody in Crohn's disease (ANDANTE I and II). Gut, 68(1), 40-48. [More Information]
Pudipeddi, A., Kariyawasam, V., Haifer, C., Baraty, B., Paramsothy, S., Leong, R. (2019). Safety of drugs used for the treatment of Crohn's disease. Expert Opinion on Drug Safety, 18(5), 357-367. [More Information]
Paramsothy, S., Nielsen, S., Kamm, M., Deshpande, N., Faith, J., Clemente, J., Paramsothy, R., Walsh, A., van den Bogaerde, J., Samuel, D., Leong, R., et al (2019). Specific Bacteria and Metabolites Associated with Response to Fecal Microbiota Transplantation in Patients with Ulcerative Colitis. Gastroenterology, 156(5), 1440-1454.e2. [More Information]
Selinger, C., Ochieng, A., George, V., Leong, R. (2019). The Accuracy of Adherence Self-report Scales in Patients on Thiopurines for Inflammatory Bowel Disease: A Comparison With Drug Metabolite Levels and Medication Possession Ratios. Inflammatory Bowel Diseases, 25(5), 919-924. [More Information]
Paulides, E., Kim, C., Frampton, C., Gearry, R., Eglinton, T., Leong, R., de Boer, N., Mulder, C., McCombie, A. (2019). Validation of the Inflammatory Bowel Disease Disability Index for Self-report and Development of an Item-reduced Version. Journal of Gastroenterology and Hepatology, 34(1), 92-102. [More Information]
Chan, W., Shim, H., Ng, S., Liu, J., Inglis, C., Greveson, K., Baraty, B., Haifer, C., Leong, R. (2018). A Global Survey of Gastroenterologists' Travel Advice to Patients with Inflammatory Bowel Disease on Immunosuppressive Agents and Management of Those Visiting Tuberculosis-Endemic Areas. Journal of Crohn's and Colitis, 12(11), 1261-1269. [More Information]
Danese, S., Banerjee, R., Cummings, J., Dotan, I., Kotze, P., Leong, R., Paridaens, K., Peyrin-Biroulet, L., Scott, G., van Assche, G., et al (2018). Consensus recommendations for patient-centered therapy in mild-to-moderate ulcerative colitis: the i Support Therapy-Access to Rapid Treatment (iSTART) approach. Intestinal Research, 16(4), 522-528. [More Information]
Chan, W., Mourad, F., Leong, R. (2018). Crohn's disease associated strictures. Journal of Gastroenterology and Hepatology, 33(5), 998-1008. [More Information]
Chan, W., Lynch, N., Bampton, P., Chang, J., Chung, A., Florin, T., Hetzel, D., Jakobovits, S., Moore, G., Pavli, P., Leong, R., et al (2018). Entyvio lengthen dose-interval study: lengthening vedolizumab dose interval and the risk of clinical relapse in inflammatory bowel disease. European Journal of Gastroenterology and Hepatology, 30(7), 735-740. [More Information]
Huynh, R., Ip, M., Chang, J., Haifer, C., Leong, R. (2018). Expert-led didactic versus self-directed audiovisual training of confocal laser endomicroscopy in evaluation of mucosal barrier defects. Endoscopy International Open, 6(1), E115-E122. [More Information]
Liu, F., Ma, R., Tay, C., Octavia, S., Lan, R., Chung, H., Riordan, S., Grimm, M., Leong, R., Tanaka, M., et al (2018). Genomic analysis of oral Campylobacter concisus strains identified a potential bacterial molecular marker associated with active Crohn's disease. Emerging Microbes and Infections, 7(1), 1-14. [More Information]
Toh, J., Wang, N., Young, C., Rickard, M., Keshava, A., Stewart, P., Kariyawasam, V., Leong, R. (2018). Major Abdominal and Perianal Surgery in Crohn's Disease: Long-term Follow-up of Australian Patients With Crohn's Disease. Diseases of the Colon and Rectum, 61(1), 67-76. [More Information]
Perry, J., Chen, A., Kariyawasam, V., Collins, G., Choong, C., Teh, W., Mitrev, N., Kohler, F., Leong, R. (2018). Medication non-adherence in inflammatory bowel diseases is associated with disability. Intestinal Research, 16(4), 571-578. [More Information]
Lee, J., Wasinger, V., Yau, Y., Chuang, E., Yajnik, V., Leong, R. (2018). Molecular Pathophysiology of Epithelial Barrier Dysfunction in Inflammatory Bowel Diseases. Proteomes, 6(2), 1-17. [More Information]
Laube, R., Liu, K., Schifter, M., Yang, J., Suen, M., Leong, R. (2018). Oral and upper gastrointestinal Crohn's disease. Journal of Gastroenterology and Hepatology, 33(2), 355-364. [More Information]
Leong, R. (2018). Positioning biological agents: Session two summary. Journal of Gastroenterology and Hepatology, 33(Suppl 3), 11. [More Information]
Leong, R., Katelaris, P. (2018). Positioning biologics—A case-based discussion: Anti-tumor necrosis factor biological agents/biosimilars. Journal of Gastroenterology and Hepatology, 33, 14-14. [More Information]
Mourad, F., Leong, R. (2018). Role of hemostatic powders in the management of lower gastrointestinal bleeding: A review. Journal of Gastroenterology and Hepatology, 33(8), 1445-1453. [More Information]
Lo, B., Prosberg, M., Gluud, L., Chan, W., Leong, R., van der List, E., van der Have, M., Sarter, H., Gower-Rousseau, C., et al (2018). Systematic review and meta-analysis: assessment of factors affecting disability in inflammatory bowel disease and the reliability of the inflammatory bowel disease disability index. Alimentary Pharmacology and Therapeutics, 47(1), 6-15. [More Information]
Sanagapalli, S., Ko, Y., Kariyawasam, V., Ng, S., Tang, W., de Silva, H., Chen, M., Wu, K., Aniwan, S., Ng, K., Leong, R., et al (2018). The association between new generation oral contraceptive pill and the development of inflammatory bowel diseases. Intestinal Research, 16(3), 409-415. [More Information]
Ma, R., Liu, F., Yap, S., Lee, H., Leong, R., Riordan, S., Grimm, M., Zhang, L. (2018). The Growth and Protein Expression of Inflammatory Bowel Disease-Associated Campylobacter concisus Is Affected by the Derivatives of the Food Additive Fumaric Acid. Frontiers in Microbiology, 9, 1-15. [More Information]
Sanagapalli, S., Agnihotri, K., Leong, R., Corte, C. (2017). Antispasmodic drugs in colonoscopy: a review of their pharmacology, safety and efficacy in improving polyp detection and related outcomes. Therapeutic Advances in Gastroenterology, 10(1), 101-113. [More Information]
van der List, E., Chen, A., Leong, R., Whiteley, I., Rickard, M., Chapman, G., Katelaris, P., McDonald, C., Kwok, A., Lee, C., Kariyawasam, V., et al (2017). Disability in Surgical Inflammatory Bowel Disease Patients. Clinical Gastroenterology and Hepatology, 15(1), 157-158. [More Information]
Mitrev, N., Kariyawasam, V., Leong, R. (2017). Editorial: infliximab trough cut-off for perianal Crohn's disease - another piece of the therapeutic drug monitoring-guided infliximab dosing puzzle. Alimentary Pharmacology and Therapeutics, 45(9), 1279-1280. [More Information]
Liu, K., Wang, R., Kariyawasam, V., Wells, M., Strasser, S., McCaughan, G., Corte, C., Leong, R. (2017). Epidemiology and outcomes of primary sclerosing cholangitis with and without inflammatory bowel disease in an Australian cohort. Liver International, 37(3), 442-448. [More Information]
Leong, R., Ooi, M., Corte, C., Yau, Y., Kermeen, M., Katelaris, P., McDonald, C., Ngu, M. (2017). Full-Spectrum Endoscopy Improves Surveillance for Dysplasia in Patients With Inflammatory Bowel Diseases. Gastroenterology, 152(6), 1337-1344. [More Information]
Tiao, D., Chan, W., Jeganathan, J., Chan, J., Perry, J., Selinger, C., Leong, R. (2017). Inflammatory Bowel Disease Pharmacist Adherence Counseling Improves Medication Adherence in Crohn's Disease and Ulcerative Colitis. Inflammatory Bowel Diseases, 23(8), 1257-1261. [More Information]
Liu, K., Strasser, S., Koorey, D., Leong, R., Solomon, M., McCaughan, G. (2017). Interactions between primary sclerosing cholangitis and inflammatory bowel disease: implications in the adult liver transplant setting. Expert Review of Gastroenterology and Hepatology, 11(10), 949-960. [More Information]
Chan, W., Chen, A., Tiao, D., Ochieng, A., Leong, R. (2017). Medication adherence in inflammatory bowel disease. Intestinal Research, 15(4), 434-445. [More Information]
Paramsothy, S., Kamm, M., Kaakoush, N., Walsh, A., Van Den Bogaerde, J., Samuel, D., Leong, R., Connor, S., Ng, W., Paramsothy, R., et al (2017). Multidonor intensive faecal microbiota transplantation for active ulcerative colitis: a randomised placebo-controlled trial. The Lancet, 389(10075), 1218-1228. [More Information]
Jeganathan, J., Lee, C., Rahme, A., Tiao, D., Weston, C., Dutt, S., Magoffin, A., Kwan, V., Alswaifi, A., Katelaris, P., Gaskin, K., Leong, R., et al (2017). Pediatric-to-adult Transition and Medication Adherence in Patients with Inflammatory Bowel Disease. Inflammatory Bowel Diseases, 23(7), 1065-1070. [More Information]
Mourad, F., Yau, Y., Wasinger, V., Leong, R. (2017). Proteomics in Inflammatory Bowel Disease: Approach Using Animal Models. Digestive Diseases and Sciences, 62(9), 2266-2276. [More Information]
Mitrev, N., Vande Casteele, N., Seow, C., Andrews, J., Connor, S., Moore, G., Barclay, M., Begun, J., Bryant, R., Chan, W., et al (2017). Review article: consensus statements on therapeutic drug monitoring of anti-tumour necrosis factor therapy in inflammatory bowel diseases. Alimentary Pharmacology and Therapeutics, 2017 (11-12), 1037-1053. [More Information]
Mourad, F., Yau, Y., Wasinger, V., Leong, R. (2017). Serological epithelial component proteins identify intestinal complications in Crohn's Disease. Digestive Diseases and Sciences, 16(7), 1244-1257. [More Information]
Chan, W., Shim, H., Lim, M., Sawadjaan, F., Isaac, S., Chuah, S., Leong, R., Kong, C. (2017). Symptoms of anxiety and depression are independently associated with inflammatory bowel disease-related disability. Digestive and Liver Disease, 49(12), 1314-1319. [More Information]
Xu, L., Lochhead, P., Ko, Y., Claggett, B., Leong, R., Ananthakrishnan, A. (2017). Systematic review with meta-analysis: breastfeeding and the risk of Crohn's disease and ulcerative colitis. Alimentary Pharmacology and Therapeutics, 46(9), 780-789. [More Information]
Mitrev, N., Leong, R. (2017). Therapeutic drug monitoring of anti-tumour necrosis factor-a agents in inflammatory bowel disease. Expert Opinion on Drug Safety, 16(3), 303-317. [More Information]
Chiu, H., Ching, J., Wu, K., Rerknimitr, R., Li, J., Wu, D., Goh, K., Matsuda, T., Kim, H., Leong, R., et al (2016). A Risk-Scoring System Combined with a Fecal Immunochemical Test Is Effective in Screening High-Risk Subjects for Early Colonoscopy to Detect Advanced Colorectal Neoplasms. Gastroenterology, 150(3), 617-625. [More Information]
Ooi, C., Makharia, G., Hilmi, I., Gibson, P., Fock, K., Ahuja, V., Ling, K., Lim, W., Thia, K., Leong, R., et al (2016). Asia Pacific Consensus Statements on Crohn's disease. Part 1: Definition, diagnosis, and epidemiology: (Asia Pacific Crohn's Disease Consensus-Part 1). Journal of Gastroenterology and Hepatology, 31(1), 45-55. [More Information]
Ooi, C., Makharia, G., Hilmi, I., Gibson, P., Fock, K., Ahuja, V., Ling, K., Lim, W., Thia, K., Leong, R., et al (2016). Asia-Pacific consensus statements on Crohn's disease. Part 2: Management. Journal of Gastroenterology and Hepatology, 31(1), 56-68. [More Information]
Leong, R., Mitrev, N., Ko, Y. (2016). Hygiene hypothesis: is the evidence the same all over the world? Digestive Diseases, 34(1-2), 35-42. [More Information]
Leong, R. (2016). In the endoscopy unit: summary. European Journal of Gastroenterology and Hepatology, 31(Suppl. 1), 38-38. [More Information]
Toh, J., Stewart, P., Rickard, M., Leong, R., Wang, N., Young, C. (2016). Indications and surgical options for small bowel, large bowel and perianal Crohn's disease. World Journal of Gastroenterology, 22(40), 8892-8904. [More Information]
Wanders, L., Kuiper, T., Kiesslich, R., Karstensen, J., Leong, R., Dekker, E., Bisschops, R. (2016). Limited applicability of chromoendoscopy-guided confocal laser endomicroscopy as daily-practice surveillance strategy in Crohn's disease. Gastrointestinal Endoscopy, 83(5), 966-971. [More Information]
Wang, L., Collins, G., Corte, C., Katelaris, P., Leong, R. (2016). Research topic: Health economics of biological agents in Australia. Journal of Gastroenterology and Hepatology, 31, 30-30. [More Information]
Chen, J., Andrews, J., Kariyawasam, V., Moran, N., Gounder, P., Collins, G., Walsh, A., Connor, S., Lee, T., McLachlan, A., Katelaris, P., Leong, R., et al (2016). Review article: acute severe ulcerative colitis - evidence-based consensus statements. Alimentary Pharmacology and Therapeutics, 44(2), 127-144. [More Information]
Wong, M., Ching, J., Chiu, H., Wu, K., Rerknimitr, R., Li, J., Wu, D., Goh, K., Leong, R., et al (2016). Risk of colorectal neoplasia in individuals with self-reported family history: a prospective colonoscopy study from 16 Asia-Pacific regions. American Journal of Gastroenterology, 111(11), 1621-1629. [More Information]
Ko, Y., Tang, J., Sanagapalli, S., Kim, B., Leong, R. (2016). Safety of Proton Pump Inhibitors and Risk of Gastric Cancers - Review of Literature and Pathophysiological Mechanisms. Expert Opinion on Drug Safety, 15(1), 53-63. [More Information]
Corte, C., Zhang, L., Chen, J., Westbury, S., Shaw, J., Yeoh, K., Leong, R. (2016). Validation of the Asia Pacific Colorectal Screening (APCS) score in a western population An alternative screening tool. Journal of Gastroenterology and Hepatology, 31(2), 370-375. [More Information]
Paramsothy, S., Borody, T., Lin, E., Finlayson, S., Walsh, A., Samuel, D., Van Den Bogaerde, J., Leong, R., Connor, S., Ng, W., et al (2015). Donor recruitment for fecal microbiota transplantation. Inflammatory Bowel Diseases, 21(7), 1600-1606. [More Information]
Moran, N., Webster, B., Lee, K., Trotman, J., Kwan, Y., Napoli, J., Leong, R. (2015). Epstein Barr virus-positive mucocutaneous ulcer of the colon associated Hodgkin lymphoma in Crohn's disease. World Journal of Gastroenterology, 21(19), 6072-6076. [More Information]
Paramsothy, S., Walsh, A., Borody, T., Samuel, D., Van Den Bogaerde, J., Leong, R., Connor, S., Ng, W., Mitchell, H., Kaakoush, N., et al (2015). Gastroenterologist perceptions of faecal microbiota transplantation. World Journal of Gastroenterology, 21(38), 10907-10914. [More Information]
Kashkooli, S., Andrews, J., Roberts, M., Ochieng, A., Leong, R. (2015). Inflammatory bowel disease-specific pregnancy knowledge of gastroenterologists against general practitioners and obstetricians. United European Gastroenterology Journal, 3(5), 462-470. [More Information]
Leong, R., Perry, J., Campbell, B., Koo, J., Turner, I., Corte, C., Fok, I. (2015). Knowledge and predictors of dysplasia surveillance performance in inflammatory bowel diseases in Australia. Gastrointestinal Endoscopy, 82(4), 708-714.e4. [More Information]
Leong, R. (2015). Metallic Stents for Benign Extrahepatic Biliary Stricture: In Praise of Self-Expansion? Digestive Diseases and Sciences, 60(11), 3158-3159. [More Information]
Lunney, P., Kariyawasam, V., Wang, R., Middleton, K., Huang, T., Ochieng, A., Andrews, J., Katelaris, P., Leong, R. (2015). Smoking prevalence and its influence on disease course and surgery in Crohn's disease and ulcerative colitis. Alimentary Pharmacology and Therapeutics, 42(1), 61-70. [More Information]
Bennett, A., Buckton, S., Lawrance, I., Leong, R., Moore, G., Andrews, J. (2015). Ulcerative colitis outpatient management: Development and evaluation of tools to support primary care practitioners. Internal Medicine Journal, 45(12), 1254-1266. [More Information]
Kariyawasam, V., Selinger, C., Katelaris, P., Jones, B., McDonald, C., Barr, G., Chapman, G., Colliwshaw, J., Lunney, P., Middleton, K., Wang, R., et al (2014). Early Use of Thiopurines or Methotrexate Reduces Major Abdominal and Perianal Surgery in Crohn's Disease. Inflammatory Bowel Diseases, 20(8), 1382-1390. [More Information]
Selinger, C., Andrews, J., Titman, A., Norton, I., Jones, D., McDonald, C., Barr, G., Selby, W., Leong, R. (2014). Long-term follow up reveals low incidence of colorectal cancer, but frequent need for resection, among Australian patients with inflammatory bowel disease. Clinical Gastroenterology and Hepatology, 12(4), 644-650. [More Information]
Lee, C., Hsu, P., Nanan, B., Nanan, R., Wong, M., Gaskin, K., Leong, R., Murchie, R., Muise, A., Stormon, M. (2014). Novel de novo mutations of the interleukin-10 receptor gene lead to infantile onset inflammatory bowel disease. Journal of Crohn's and Colitis, 8(11), 1551-1556. [More Information]
Marinos, E., Lee, S., Jones, B., Corte, C., Kwok, A., Leong, R. (2014). Outcomes of single-dose peri-procedural antibiotic prophylaxis for endoscopic ultrasound-guided fine-needle aspiration of pancreatic cystic lesions. United European Gastroenterology Journal, 2(5), 391-396. [More Information]
Selinger, C., Kemp, A., Leong, R. (2014). Persistence to oral 5-aminosalicylate therapy for inflammatory bowel disease in Australia. Expert Review of Gastroenterology and Hepatology, 8(3), 329-334. [More Information]
Selinger, C., Lal, S., Eaden, J., Jones, B., Katelaris, P., Chapman, G., McDonald, C., Leong, R., McLaughlin, J. (2013). Better disease specific patient knowledge is associated with greater anxiety in inflammatory bowel disease. Journal of Crohn's and Colitis, 7(6), e214-e218. [More Information]
Selinger, C., Andrews, J., Dent, O., Norton, I., Jones, B., McDonald, C., Cowlishaw, J., Barr, G., Selby, W., Leong, R. (2013). Cause-Specific Mortality and 30-year Relative Survival of Crohn's Disease and Ulcerative Colitis. Inflammatory Bowel Diseases, 19(9), 1880-1888. [More Information]
Selinger, C., Kinjo, Y., Jones, B., Katelaris, P., Chapman, G., McDonald, C., Lal, S., McLaughlin, J., Robinson, A., Leong, R. (2013). Conveying medication benefits to ulcerative colitis patients and effects on patient attitudes regarding thresholds for adherence. Journal of Crohn's and Colitis, 7(8), e312-e317. [More Information]
Mustaffa, N., Leong, R., Katelaris, P. (2013). Education and imaging. Gastrointestinal: spigelian hernia; an uncommon cause of longstanding intermittent abdominal pain. Journal of Gastroenterology and Hepatology, 28(1), 202. [More Information]
Selinger, C., Eaden, J., Jones, D., Katelaris, P., Chapman, G., McDonald, C., Smith, P., Lal, S., Leong, R., McLaughlin, J., et al (2013). Modifiable Factors Associated with Nonadherence to Maintenance Medication for Inflammatory Bowel Disease. Inflammatory Bowel Diseases, 19(10), 2199-2206. [More Information]
Selinger, C., Eaden, J., Selby, W., Jones, B., Katelaris, P., Chapman, G., McDonald, C., McLaughlin, J., Leong, R., Lal, S. (2012). Patients' knowledge of pregnancy-related issues in inflammatory bowel disease and validation of a novel assessment tool ('CCPKnow'). Alimentary Pharmacology and Therapeutics, 36(1), 57-63. [More Information]
Lunney, P., Leong, R. (2012). Review article: Ulcerative colitis, smoking and nicotine therapy. Alimentary Pharmacology and Therapeutics, 36(11-12), 997-1008. [More Information]
Corte, C., Saxena, P., Tattersall, S., Selinger, C., Leong, R. (2012). When to Use Biological Agents in Inflammatory Bowel Disease. Journal of Gastroenterology and Hepatology, 27(7), 1141-1149. [More Information]
Fanning, S., Kwok, A., Jones, B., Leong, R. (2010). EUS aspiration needle size: smaller is better? Gastrointestinal Endoscopy, 72(4), 904-905. [More Information]
Koo, J., Arasaratnam, M., Liu, K., Redmond, D., Connor, S., Sung, J., Leong, R. (2010). Knowledge, perception and practices of colorectal cancer screening in an ethnically diverse population. Cancer Epidemiology, 34(5), 604-610. [More Information]
Sharifian, A., Humphris, J., Leong, R., Jones, D. (2009). Education and imaging. Gastrointestinal: Mycobacterium genavense enteritis in an immunosuppressed patient. Journal of Gastroenterology and Hepatology, 24(8), 1474. [More Information]
Chang, D., Johns, A., Merrett, N., Gill, A., Colvin, E., Scarlett, C., Nguyen, N., Leong, R., Cosman, P., Kelly, M., Kench, J., et al (2009). Margin Clearance and Outcome in Resected Pancreatic Cancer. Journal of Clinical Oncology, 27(17), 2855-2862. [More Information]
Nguyen, N., Biankin, A., Leong, R., Chang, D., Cosman, P., Delaney, P., Kench, J., Merrett, N. (2009). Real time intraoperative confocal laser microscopy-guided surgery. Annals of Surgery, 249(5), 735-737. [More Information]
Kwok, A., Lam, T., Katelaris, P., Leong, R. (2008). Helicobacter pylori eradication therapy: indications, efficacy and safety. Expert Opinion on Drug Safety, 7(3), 271-281. [More Information]
Leong, R., Nguyen, N., MEREDITH, C., ALâ€“SOHAILY, S., KUKIC, D., Delaney, P., MURR, E., Yong, J., Merrett, N., Biankin, A. (2008). In vivo confocal endomicroscopy in the diagnosis and evaluation of celiac disease. Gastroenterology, 135(6), 1870-1876. [More Information]

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2024

Pudipeddi, A., Corte, C., Ward, M., De Cruz, P., Lan-San Fung, C., Redmond, D., Chan, W., Mourad, F., Kermeen, M., Leong, R., Paramsothy, S., et al (2024). Effects of Thiopurine Withdrawal on Vedolizumab-Treated Patients With Ulcerative Colitis: A Randomized Controlled Trial. Clinical Gastroenterology and Hepatology. [More Information]
Chetwood, J., Tran, Y., Subramanian, S., Smith, P., Iborra, M., Buisson, A., Paramsothy, S., Leong, R. (2024). Intravenous Versus Subcutaneous Infliximab in Inflammatory Bowel Disease: A Systematic Review and Meta-analysis. Journal of Crohn's and Colitis, 18(9), 1440-1449. [More Information]
Chaemsupaphan, T., Leong, R., Vande Casteele, N., Seow, C. (2024). Review article: Optimisation of biologic (monoclonal antibody) therapeutic response in inflammatory bowel disease. Alimentary Pharmacology and Therapeutics, 60(9), 1234-1243. [More Information]
Ahuja, V., Sollano, J., Pisespongsa, P., Mustaffa, N., Banerjee, R., Leow, A., Raja Ali, R., Chuah, S., Palaniappan, S., Ooi, C., Leong, R., et al (2024). Ten missteps in the management of inflammatory bowel disease in Asia: An expert report by the Asian Pacific Association of Gastroenterology Working Group on Inflammatory Bowel Disease. Journal of Gastroenterology and Hepatology. [More Information]

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2023

Anderson, E., Waller, K., Tamilarasan, A., Lin, H., Paramsothy, S., Leong, R. (2023). Adalimumab originator versus adalimumab biosimilars in inflammatory bowel disease in Australia. Expert Opinion on Biological Therapy. [More Information]
Laube, R., Ochieng, A., Seow, C., Christensen, B., Flanagan, E., Kennedy, D., Mountifield, R., Seeho, S., Shand, A., Williams, A., Leong, R. (2023). Australian inflammatory bowel disease consensus statements for preconception, pregnancy and breast feeding. Gut. [More Information]
Au, M., Low, P., Rennie, M., Mohseni, M., Song, Y., Kim, N., Baraty, B., Mitrev, N., He, E., Ho, V., Leong, R., et al (2023). Determining efficacy of dynamic multimedia bowel preparation instructions versus standard instructions on adenoma detection and patient reported measures (DIGICLEAN trial): A study protocol for a multicentre, colonoscopist-blinded, randomised controlled trial. BMJ Open, 13(7). [More Information]
Pudipeddi, A., Fung, C., Christensen, B., Bryant, R., Subramaniam, K., Chetwood, J., Paramsothy, S., Leong, R. (2023). Knowledge and attitudes towards the use of histological assessments in ulcerative colitis by gastroenterologists vs pathologists. World Journal of Gastroenterology, 29(2), 378-389. [More Information]
Liu, E., Laube, R., Leong, R., Fraser, A., Selinger, C., Limdi, J. (2023). Managing Inflammatory Bowel Disease in Pregnancy: Health Care Professionals' Involvement, Knowledge, and Decision Making. Inflammatory Bowel Diseases, 29(4), 522-530. [More Information]
Haifer, C., Luu, L., Paramsothy, S., Borody, T., Leong, R., Kaakoush, N. (2023). Microbial determinants of effective donors in faecal microbiota transplantation for UC. Gut, 72(1), 90-100. [More Information]
Selinger, C., Laube, R., Steed, H., Brookes, M., Leong, R. (2023). Planning to conceive within a year is associated with better pregnancy-specific disease-related patient knowledge and better medication adherence in women of childbearing age with inflammatory bowel disease. Therapeutic Advances in Gastroenterology, 16. [More Information]
Chetwood, J., Leong, R., Gupta, S., Subramaniam, K., De Cruz, P., Moore, G., An, Y., Connor, S., Kermeen, M., Paramsothy, S. (2023). Ustekinumab as induction and maintenance therapy for ulcerative colitis–national extended follow-up and a review of the literature. Expert Opinion on Drug Safety. [More Information]

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2022

Waller, K., Leong, R., Paramsothy, S. (2022). An update on fecal microbiota transplantation for the treatment of gastrointestinal diseases. Journal of Gastroenterology and Hepatology, 37(2), 246-255. [More Information]
Pudipeddi, A., Paramsothy, S., Leong, R. (2022). Combination Therapy of Immunomodulators With Non-Anti-Tumor Necrosis Factor Agents in Inflammatory Bowel Disease: Need More Evidence? Clinical Gastroenterology and Hepatology, 20(3), e640-e641. [More Information]
Ma, C., Hanzel, J., Panaccione, R., Sandborn, W., D'Haens, G., Ahuja, V., Atreya, R., Bernstein, C., Bossuyt, P., Bressler, B., Leong, R., et al (2022). CORE-IBD: A Multidisciplinary International Consensus Initiative to Develop a Core Outcome Set for Randomized Controlled Trials in Inflammatory Bowel Disease. Gastroenterology. [More Information]
Au, M., Mitrev, N., Leong, R., Kariyawasam, V. (2022). Dual biologic therapy with ocrelizumab for multiple sclerosis and vedolizumab for Crohn’s disease: A case report and review of literature. World Journal of Clinical Cases, 10(8), 2569-2576. [More Information]
Danese, S., Sands, B., Abreu, M., O'Brien, C., Bravata, I., Nazar, M., Miao, Y., Wang, Y., Rowbotham, D., Leong, R., et al (2022). Early Symptomatic Improvement After Ustekinumab Therapy in Patients With Ulcerative Colitis: 16-Week Data From the UNIFI Trial. Clinical Gastroenterology and Hepatology, 20(12), 2858-2867.e5. [More Information]
Lee, C., Huang, S., Hsu, P., Leong, R., Nanan, B., Nanan, R. (2022). Low-dose IL-2 may enhance the effect of vedolizumab. Scandinavian Journal of Gastroenterology, 57(11), 1404-1405. [More Information]
Haifer, C., Paramsothy, S., Kaakoush, N., Saikal, A., Ghaly, S., Yang, T., Luu, L., Borody, T., Leong, R. (2022). Lyophilised oral faecal microbiota transplantation for ulcerative colitis (LOTUS): a randomised, double-blind, placebo-controlled trial. The Lancet Gastroenterology & Hepatology, 7(2), 141-151. [More Information]
Laube, R., Selinger, C., Leong, R. (2022). Medication adherence in women with IBD of childbearing age likely associated with disease knowledge. Therapeutic Advances in Gastroenterology, 15, 1-8. [More Information]
Haifer, C., Paramsothy, S., Kaakoush, N., Leong, R. (2022). Oral faecal microbiota transplantation in ulcerative colitis – Authors' reply. The Lancet Gastroenterology & Hepatology, 7(4), 286-287. [More Information]
Chin, Y., Jain, S., Lee, M., Ng, C., Lin, S., Mai, A., Muthiah, M., Foo, F., Sundar, R., Ong, D., Leong, R., et al (2022). Small bowel adenocarcinoma in Crohn’s disease: a systematic review and meta-analysis of the prevalence, manifestation, histopathology, and outcomes. International Journal of Colorectal Disease, 37(1), 239-250. [More Information]
Tamilarasan, A., Tran, Y., Paramsothy, S., Leong, R. (2022). The diagnostic yield of pan-enteric capsule endoscopy in inflammatory bowel disease: A systematic review and meta-analysis. Journal of Gastroenterology and Hepatology, 37(12), 2207-2216. [More Information]
Zhang, E., Christensen, B., Macrae, F., Leong, R. (2022). The Effects of the COVID Pandemic on Patients with IBD: Lessons Learned and Future Directions. Journal of Clinical Medicine, 11(23), 7002. [More Information]
Bustamante, S., Yau, Y., Boys, V., Chang, J., Paramsothy, S., Pudipeddi, A., Leong, R., Wasinger, V. (2022). Tryptophan Metabolism ‘Hub’ Gene Expression Associates with Increased Inflammation and Severe Disease Outcomes in COVID-19 Infection and Inflammatory Bowel Disease. International Journal of Molecular Sciences, 23(23). [More Information]
Pudipeddi, A., Ko, Y., Paramsothy, S., Leong, R. (2022). Vedolizumab has longer persistence than infliximab as a first-line biological agent but not as a second-line biological agent in moderate-to-severe ulcerative colitis: real-world registry data from the Persistence Australian National IBD Cohort (PANIC) study. Therapeutic Advances in Gastroenterology, 15, 1.76E+16. [More Information]

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2021

Laube, R., Tran, Y., Paramsothy, S., Leong, R. (2021). Assisted Reproductive Technology in Crohn's Disease and Ulcerative Colitis: A Systematic Review and Meta-Analysis. American Journal of Gastroenterology, 116(12), 2334-2344. [More Information]
Williams, A., Paramsothy, R., Wu, N., Ghaly, S., Leach, S., Paramsothy, S., Corte, C., O'Brien, C., Burke, C., Wark, G., et al (2021). Australia IBD Microbiome (AIM) Study: protocol for a multicentre longitudinal prospective cohort study. BMJ Open, 11(2), e042493. [More Information]
Aluzaite, K., Greveson, K., Ben-Horin, S., Leong, R., Haj, O., Schultz, M. (2021). Barriers to international travel in inflammatory bowel disease patients. Journal of Travel Medicine, 28(1), 1-8. [More Information]
Yau, Y., Wasinger, V., Hirten, R., Huntsman, M., Stylli, J., Shimizu, J., Yajnik, V., Smith, J., Lee, S., Singh, S., et al (2021). Current trends in IBD - Development of mucosal-based biomarkers and a novel minimally invasive recoverable sampling system. Inflammatory Bowel Diseases, 27, S17-S24. [More Information]
Mourad, F., Leong, R., Kariyawasam, V. (2021). Early thiopurine maintenance and reduced colectomy rate in ulcerative colitis: fact or fiction? European Journal of Gastroenterology and Hepatology, 33(1S Suppl 1), e1106. [More Information]
Kariyawasam, V., Mourad, F., Mitrev, N., Paramsothy, S., Selinger, C., Katelaris, P., Jones, B., McDonald, C., Barr, G., Chapman, G., et al (2021). Early thiopurine maintenance is associated with reduced proximal disease progression and colectomy rate in ulcerative colitis. European Journal of Gastroenterology and Hepatology, 33(12), 1524-1532. [More Information]
Pudipeddi, A., Han, J., Leong, R. (2021). Hepatobiliary and Pancreatic: Right upper quadrant pain and positive Murphy's sign. Journal of Gastroenterology and Hepatology, 36(6), 1390. [More Information]
Pudipeddi, A., Liu, J., Kariyawasam, V., Borody, T., Cowlishaw, J., McDonald, C., Katelaris, P., Chapman, G., Corte, C., Lemberg, D., et al (2021). High prevalence of Crohn disease and ulcerative colitis among older people in Sydney. Medical Journal of Australia, 214(8), 365-370. [More Information]
Haifer, C., Paramsothy, S., Borody, T., Clancy, A., Leong, R., Kaakoush, N. (2021). Long-term bacterial and fungal dynamics following oral lyophilized fecal microbiota transplantation in clostridioides difficile infection. msystems, 6(1), e00905-20. [More Information]
Haifer, C., Saikal, A., Paramsothy, R., Kaakoush, N., Leong, R., Borody, T., Kamm, M., Paramsothy, S. (2021). Response to faecal microbiota transplantation in ulcerative colitis is not sustained long term following induction therapy. Gut, 70(11), 2210-2211. [More Information]
Leong, R. (2021). Risk mitigation in Crohn's disease and ulcerative colitis: Session four summary. Journal of Gastroenterology and Hepatology, 36(S1), 27-28. [More Information]
Ko, Y., Paramsothy, S., Yau, Y., Leong, R. (2021). Superior treatment persistence with ustekinumab in Crohn’s disease and vedolizumab in ulcerative colitis compared with anti-TNF biological agents: real-world registry data from the Persistence Australian National IBD Cohort (PANIC) study. Alimentary Pharmacology and Therapeutics, 54(3), 292-301. [More Information]
Chin, Y., Ng, C., Lin, S., Jain, S., Kong, G., Koh, J., Tan, D., Ong, D., Muthiah, M., Chong, C., Leong, R., et al (2021). Systematic review with meta-analysis: The prevalence, risk factors and outcomes of upper gastrointestinal tract crohn's disease. Digestive and Liver Disease, 53(12), 1548-1558. [More Information]
Sanagapalli, S., McGuire, J., Leong, R., Patel, K., Raeburn, A., Abdul-Razakq, H., Plumb, A., Banks, M., Haidry, R., Lovat, L., et al (2021). The Clinical Relevance of Manometric Esophagogastric Junction Outflow Obstruction Can Be Determined Using Rapid Drink Challenge and Solid Swallows. American Journal of Gastroenterology, 116(2), 280-288. [More Information]
Laube, R., Paramsothy, S., Leong, R. (2021). Use of medications during pregnancy and breastfeeding for Crohn's disease and ulcerative colitis. Expert Opinion on Drug Safety, 20(3), 275-292. [More Information]

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2020

Haifer, C., Kelly, C., Paramsothy, S., Andresen, D., Papanicolas, L., McKew, G., Borody, T., Kamm, M., Costello, S., Andrews, J., van der Poorten, D., Leong, R., et al (2020). Australian consensus statements for the regulation, production and use of faecal microbiota transplantation in clinical practice. Gut, 69(5), 801-810. [More Information]
Haifer, C., Paramsothy, S., Leong, R. (2020). Faecal microbiota transplantation as an elixir of youth. Hepatobiliary Surgery and Nutrition, 9(4), 488-489. [More Information]
Chan, W., Kariyawasam, V., Kim, S., Pudipeddi, A., Paramsothy, S., Shim, H., Mourad, F., Ding, N., Ferrante, M., Leong, R. (2020). Gastroenterologists' preference and risk perception on the use of immunomodulators and biological therapies in elderly patients with ulcerative colitis: an international survey. European Journal of Gastroenterology and Hepatology, 32, 976-983. [More Information]
Laube, R., Yau, Y., Selinger, C., Seow, C., Thomas, A., Chuah, S., Hilmi, I., Mao, R., Ong, D., Ng, S., Leong, R., et al (2020). Knowledge and Attitudes Towards Pregnancy in Females with Inflammatory Bowel Disease: An International, Multi-centre Study. Journal of Crohn's and Colitis, 14(9), 1248-1255. [More Information]
Wasinger, V., Lu, K., Yau, Y., Nash, J., Lee, J., Chang, J., Paramsothy, S., Kaakoush, N., Mitchell, H., Leong, R. (2020). Spp24 is associated with endocytic signalling, lipid metabolism, and discrimination of tissue integrity for ‘leaky-gut’ in inflammatory bowel disease. Scientific Reports, 10(1), 12932. [More Information]
Haifer, C., Leong, R., Paramsothy, S. (2020). The role of faecal microbiota transplantation in the treatment of inflammatory bowel disease. Current Opinion in Pharmacology, 55, 8-16. [More Information]
Leong, R. (2020). The significance of granulomas in Crohn's disease and inflammatory bowel disease epidemiology in Asia. Journal of Gastroenterology and Hepatology, 35(4), 523-524. [More Information]
Sanagapalli, S., Plumb, A., Maynard, J., Leong, R., Sweis, R. (2020). The timed barium swallow and its relationship to symptoms in achalasia: Analysis of surface area and emptying rate. Neurogastroenterology and Motility, 32(12), e13928. [More Information]
Shir Ali, M., Laube, R., Selvaratnam, S., Leong, R. (2020). Tioguanine as an alternative immunomodulator in inflammatory bowel diseases. Internal Medicine Journal, 50(11), 1434-1435. [More Information]

show 6 more

2019

Wehrhahn, M., Keighley, C., Kurtovic, J., Knight, D., Hong, S., Hutton, M., Lyras, D., Wang, Q., Leong, R., Borody, T., et al (2019). A series of three cases of severe Clostridium difficile infection in Australia associated with a binary toxin producing clade 2 ribotype 251 strain. Anaerobe, 55, 117-123. [More Information]
Kariyawasam, V., Kim, S., Mourad, F., Selinger, C., Katelaris, P., Jones, B., McDonald, C., Barr, G., Chapman, G., Colliwshaw, J., Lunney, P., Middleton, K., Huang, T., et al (2019). Comorbidities Rather Than Age Are Associated With the Use of Immunomodulators in Elderly-onset Inflammatory Bowel Disease. Inflammatory Bowel Diseases, 25(8), 1390-1398. [More Information]
Selvaratnam, S., Gullino, S., Shim, L., Lee, E., Lee, A., Paramsothy, S., Leong, R. (2019). Epidemiology of inflammatory bowel disease in South America: A systematic review. World Journal of Gastroenterology, 25(47), 6866-6875. [More Information]
Danese, S., Vermeire, S., Hellstern, P., Panaccione, R., Rogler, G., Fraser, G., Desreumaux, P., Leong, R., Comer, G., Cataldi, F., et al (2019). Randomised trial and open-label extension study of an anti-interleukin-6 antibody in Crohn's disease (ANDANTE I and II). Gut, 68(1), 40-48. [More Information]
Pudipeddi, A., Kariyawasam, V., Haifer, C., Baraty, B., Paramsothy, S., Leong, R. (2019). Safety of drugs used for the treatment of Crohn's disease. Expert Opinion on Drug Safety, 18(5), 357-367. [More Information]
Paramsothy, S., Nielsen, S., Kamm, M., Deshpande, N., Faith, J., Clemente, J., Paramsothy, R., Walsh, A., van den Bogaerde, J., Samuel, D., Leong, R., et al (2019). Specific Bacteria and Metabolites Associated with Response to Fecal Microbiota Transplantation in Patients with Ulcerative Colitis. Gastroenterology, 156(5), 1440-1454.e2. [More Information]
Selinger, C., Ochieng, A., George, V., Leong, R. (2019). The Accuracy of Adherence Self-report Scales in Patients on Thiopurines for Inflammatory Bowel Disease: A Comparison With Drug Metabolite Levels and Medication Possession Ratios. Inflammatory Bowel Diseases, 25(5), 919-924. [More Information]
Paulides, E., Kim, C., Frampton, C., Gearry, R., Eglinton, T., Leong, R., de Boer, N., Mulder, C., McCombie, A. (2019). Validation of the Inflammatory Bowel Disease Disability Index for Self-report and Development of an Item-reduced Version. Journal of Gastroenterology and Hepatology, 34(1), 92-102. [More Information]

show 5 more

2018

Chan, W., Shim, H., Ng, S., Liu, J., Inglis, C., Greveson, K., Baraty, B., Haifer, C., Leong, R. (2018). A Global Survey of Gastroenterologists' Travel Advice to Patients with Inflammatory Bowel Disease on Immunosuppressive Agents and Management of Those Visiting Tuberculosis-Endemic Areas. Journal of Crohn's and Colitis, 12(11), 1261-1269. [More Information]
Danese, S., Banerjee, R., Cummings, J., Dotan, I., Kotze, P., Leong, R., Paridaens, K., Peyrin-Biroulet, L., Scott, G., van Assche, G., et al (2018). Consensus recommendations for patient-centered therapy in mild-to-moderate ulcerative colitis: the i Support Therapy-Access to Rapid Treatment (iSTART) approach. Intestinal Research, 16(4), 522-528. [More Information]
Chan, W., Mourad, F., Leong, R. (2018). Crohn's disease associated strictures. Journal of Gastroenterology and Hepatology, 33(5), 998-1008. [More Information]
Chan, W., Lynch, N., Bampton, P., Chang, J., Chung, A., Florin, T., Hetzel, D., Jakobovits, S., Moore, G., Pavli, P., Leong, R., et al (2018). Entyvio lengthen dose-interval study: lengthening vedolizumab dose interval and the risk of clinical relapse in inflammatory bowel disease. European Journal of Gastroenterology and Hepatology, 30(7), 735-740. [More Information]
Huynh, R., Ip, M., Chang, J., Haifer, C., Leong, R. (2018). Expert-led didactic versus self-directed audiovisual training of confocal laser endomicroscopy in evaluation of mucosal barrier defects. Endoscopy International Open, 6(1), E115-E122. [More Information]
Liu, F., Ma, R., Tay, C., Octavia, S., Lan, R., Chung, H., Riordan, S., Grimm, M., Leong, R., Tanaka, M., et al (2018). Genomic analysis of oral Campylobacter concisus strains identified a potential bacterial molecular marker associated with active Crohn's disease. Emerging Microbes and Infections, 7(1), 1-14. [More Information]
Toh, J., Wang, N., Young, C., Rickard, M., Keshava, A., Stewart, P., Kariyawasam, V., Leong, R. (2018). Major Abdominal and Perianal Surgery in Crohn's Disease: Long-term Follow-up of Australian Patients With Crohn's Disease. Diseases of the Colon and Rectum, 61(1), 67-76. [More Information]
Perry, J., Chen, A., Kariyawasam, V., Collins, G., Choong, C., Teh, W., Mitrev, N., Kohler, F., Leong, R. (2018). Medication non-adherence in inflammatory bowel diseases is associated with disability. Intestinal Research, 16(4), 571-578. [More Information]
Lee, J., Wasinger, V., Yau, Y., Chuang, E., Yajnik, V., Leong, R. (2018). Molecular Pathophysiology of Epithelial Barrier Dysfunction in Inflammatory Bowel Diseases. Proteomes, 6(2), 1-17. [More Information]
Laube, R., Liu, K., Schifter, M., Yang, J., Suen, M., Leong, R. (2018). Oral and upper gastrointestinal Crohn's disease. Journal of Gastroenterology and Hepatology, 33(2), 355-364. [More Information]
Leong, R. (2018). Positioning biological agents: Session two summary. Journal of Gastroenterology and Hepatology, 33(Suppl 3), 11. [More Information]
Leong, R., Katelaris, P. (2018). Positioning biologics—A case-based discussion: Anti-tumor necrosis factor biological agents/biosimilars. Journal of Gastroenterology and Hepatology, 33, 14-14. [More Information]
Mourad, F., Leong, R. (2018). Role of hemostatic powders in the management of lower gastrointestinal bleeding: A review. Journal of Gastroenterology and Hepatology, 33(8), 1445-1453. [More Information]
Lo, B., Prosberg, M., Gluud, L., Chan, W., Leong, R., van der List, E., van der Have, M., Sarter, H., Gower-Rousseau, C., et al (2018). Systematic review and meta-analysis: assessment of factors affecting disability in inflammatory bowel disease and the reliability of the inflammatory bowel disease disability index. Alimentary Pharmacology and Therapeutics, 47(1), 6-15. [More Information]
Sanagapalli, S., Ko, Y., Kariyawasam, V., Ng, S., Tang, W., de Silva, H., Chen, M., Wu, K., Aniwan, S., Ng, K., Leong, R., et al (2018). The association between new generation oral contraceptive pill and the development of inflammatory bowel diseases. Intestinal Research, 16(3), 409-415. [More Information]
Ma, R., Liu, F., Yap, S., Lee, H., Leong, R., Riordan, S., Grimm, M., Zhang, L. (2018). The Growth and Protein Expression of Inflammatory Bowel Disease-Associated Campylobacter concisus Is Affected by the Derivatives of the Food Additive Fumaric Acid. Frontiers in Microbiology, 9, 1-15. [More Information]

show 13 more

2017

Sanagapalli, S., Agnihotri, K., Leong, R., Corte, C. (2017). Antispasmodic drugs in colonoscopy: a review of their pharmacology, safety and efficacy in improving polyp detection and related outcomes. Therapeutic Advances in Gastroenterology, 10(1), 101-113. [More Information]
van der List, E., Chen, A., Leong, R., Whiteley, I., Rickard, M., Chapman, G., Katelaris, P., McDonald, C., Kwok, A., Lee, C., Kariyawasam, V., et al (2017). Disability in Surgical Inflammatory Bowel Disease Patients. Clinical Gastroenterology and Hepatology, 15(1), 157-158. [More Information]
Mitrev, N., Kariyawasam, V., Leong, R. (2017). Editorial: infliximab trough cut-off for perianal Crohn's disease - another piece of the therapeutic drug monitoring-guided infliximab dosing puzzle. Alimentary Pharmacology and Therapeutics, 45(9), 1279-1280. [More Information]
Liu, K., Wang, R., Kariyawasam, V., Wells, M., Strasser, S., McCaughan, G., Corte, C., Leong, R. (2017). Epidemiology and outcomes of primary sclerosing cholangitis with and without inflammatory bowel disease in an Australian cohort. Liver International, 37(3), 442-448. [More Information]
Leong, R., Ooi, M., Corte, C., Yau, Y., Kermeen, M., Katelaris, P., McDonald, C., Ngu, M. (2017). Full-Spectrum Endoscopy Improves Surveillance for Dysplasia in Patients With Inflammatory Bowel Diseases. Gastroenterology, 152(6), 1337-1344. [More Information]
Tiao, D., Chan, W., Jeganathan, J., Chan, J., Perry, J., Selinger, C., Leong, R. (2017). Inflammatory Bowel Disease Pharmacist Adherence Counseling Improves Medication Adherence in Crohn's Disease and Ulcerative Colitis. Inflammatory Bowel Diseases, 23(8), 1257-1261. [More Information]
Liu, K., Strasser, S., Koorey, D., Leong, R., Solomon, M., McCaughan, G. (2017). Interactions between primary sclerosing cholangitis and inflammatory bowel disease: implications in the adult liver transplant setting. Expert Review of Gastroenterology and Hepatology, 11(10), 949-960. [More Information]
Chan, W., Chen, A., Tiao, D., Ochieng, A., Leong, R. (2017). Medication adherence in inflammatory bowel disease. Intestinal Research, 15(4), 434-445. [More Information]
Paramsothy, S., Kamm, M., Kaakoush, N., Walsh, A., Van Den Bogaerde, J., Samuel, D., Leong, R., Connor, S., Ng, W., Paramsothy, R., et al (2017). Multidonor intensive faecal microbiota transplantation for active ulcerative colitis: a randomised placebo-controlled trial. The Lancet, 389(10075), 1218-1228. [More Information]
Jeganathan, J., Lee, C., Rahme, A., Tiao, D., Weston, C., Dutt, S., Magoffin, A., Kwan, V., Alswaifi, A., Katelaris, P., Gaskin, K., Leong, R., et al (2017). Pediatric-to-adult Transition and Medication Adherence in Patients with Inflammatory Bowel Disease. Inflammatory Bowel Diseases, 23(7), 1065-1070. [More Information]
Mourad, F., Yau, Y., Wasinger, V., Leong, R. (2017). Proteomics in Inflammatory Bowel Disease: Approach Using Animal Models. Digestive Diseases and Sciences, 62(9), 2266-2276. [More Information]
Mitrev, N., Vande Casteele, N., Seow, C., Andrews, J., Connor, S., Moore, G., Barclay, M., Begun, J., Bryant, R., Chan, W., et al (2017). Review article: consensus statements on therapeutic drug monitoring of anti-tumour necrosis factor therapy in inflammatory bowel diseases. Alimentary Pharmacology and Therapeutics, 2017 (11-12), 1037-1053. [More Information]
Mourad, F., Yau, Y., Wasinger, V., Leong, R. (2017). Serological epithelial component proteins identify intestinal complications in Crohn's Disease. Digestive Diseases and Sciences, 16(7), 1244-1257. [More Information]
Chan, W., Shim, H., Lim, M., Sawadjaan, F., Isaac, S., Chuah, S., Leong, R., Kong, C. (2017). Symptoms of anxiety and depression are independently associated with inflammatory bowel disease-related disability. Digestive and Liver Disease, 49(12), 1314-1319. [More Information]
Xu, L., Lochhead, P., Ko, Y., Claggett, B., Leong, R., Ananthakrishnan, A. (2017). Systematic review with meta-analysis: breastfeeding and the risk of Crohn's disease and ulcerative colitis. Alimentary Pharmacology and Therapeutics, 46(9), 780-789. [More Information]
Mitrev, N., Leong, R. (2017). Therapeutic drug monitoring of anti-tumour necrosis factor-a agents in inflammatory bowel disease. Expert Opinion on Drug Safety, 16(3), 303-317. [More Information]

show 13 more

2016

Chiu, H., Ching, J., Wu, K., Rerknimitr, R., Li, J., Wu, D., Goh, K., Matsuda, T., Kim, H., Leong, R., et al (2016). A Risk-Scoring System Combined with a Fecal Immunochemical Test Is Effective in Screening High-Risk Subjects for Early Colonoscopy to Detect Advanced Colorectal Neoplasms. Gastroenterology, 150(3), 617-625. [More Information]
Ooi, C., Makharia, G., Hilmi, I., Gibson, P., Fock, K., Ahuja, V., Ling, K., Lim, W., Thia, K., Leong, R., et al (2016). Asia Pacific Consensus Statements on Crohn's disease. Part 1: Definition, diagnosis, and epidemiology: (Asia Pacific Crohn's Disease Consensus-Part 1). Journal of Gastroenterology and Hepatology, 31(1), 45-55. [More Information]
Ooi, C., Makharia, G., Hilmi, I., Gibson, P., Fock, K., Ahuja, V., Ling, K., Lim, W., Thia, K., Leong, R., et al (2016). Asia-Pacific consensus statements on Crohn's disease. Part 2: Management. Journal of Gastroenterology and Hepatology, 31(1), 56-68. [More Information]
Leong, R., Mitrev, N., Ko, Y. (2016). Hygiene hypothesis: is the evidence the same all over the world? Digestive Diseases, 34(1-2), 35-42. [More Information]
Leong, R. (2016). In the endoscopy unit: summary. European Journal of Gastroenterology and Hepatology, 31(Suppl. 1), 38-38. [More Information]
Toh, J., Stewart, P., Rickard, M., Leong, R., Wang, N., Young, C. (2016). Indications and surgical options for small bowel, large bowel and perianal Crohn's disease. World Journal of Gastroenterology, 22(40), 8892-8904. [More Information]
Wanders, L., Kuiper, T., Kiesslich, R., Karstensen, J., Leong, R., Dekker, E., Bisschops, R. (2016). Limited applicability of chromoendoscopy-guided confocal laser endomicroscopy as daily-practice surveillance strategy in Crohn's disease. Gastrointestinal Endoscopy, 83(5), 966-971. [More Information]
Wang, L., Collins, G., Corte, C., Katelaris, P., Leong, R. (2016). Research topic: Health economics of biological agents in Australia. Journal of Gastroenterology and Hepatology, 31, 30-30. [More Information]
Chen, J., Andrews, J., Kariyawasam, V., Moran, N., Gounder, P., Collins, G., Walsh, A., Connor, S., Lee, T., McLachlan, A., Katelaris, P., Leong, R., et al (2016). Review article: acute severe ulcerative colitis - evidence-based consensus statements. Alimentary Pharmacology and Therapeutics, 44(2), 127-144. [More Information]
Wong, M., Ching, J., Chiu, H., Wu, K., Rerknimitr, R., Li, J., Wu, D., Goh, K., Leong, R., et al (2016). Risk of colorectal neoplasia in individuals with self-reported family history: a prospective colonoscopy study from 16 Asia-Pacific regions. American Journal of Gastroenterology, 111(11), 1621-1629. [More Information]
Ko, Y., Tang, J., Sanagapalli, S., Kim, B., Leong, R. (2016). Safety of Proton Pump Inhibitors and Risk of Gastric Cancers - Review of Literature and Pathophysiological Mechanisms. Expert Opinion on Drug Safety, 15(1), 53-63. [More Information]
Corte, C., Zhang, L., Chen, J., Westbury, S., Shaw, J., Yeoh, K., Leong, R. (2016). Validation of the Asia Pacific Colorectal Screening (APCS) score in a western population An alternative screening tool. Journal of Gastroenterology and Hepatology, 31(2), 370-375. [More Information]

show 9 more

2015

Paramsothy, S., Borody, T., Lin, E., Finlayson, S., Walsh, A., Samuel, D., Van Den Bogaerde, J., Leong, R., Connor, S., Ng, W., et al (2015). Donor recruitment for fecal microbiota transplantation. Inflammatory Bowel Diseases, 21(7), 1600-1606. [More Information]
Moran, N., Webster, B., Lee, K., Trotman, J., Kwan, Y., Napoli, J., Leong, R. (2015). Epstein Barr virus-positive mucocutaneous ulcer of the colon associated Hodgkin lymphoma in Crohn's disease. World Journal of Gastroenterology, 21(19), 6072-6076. [More Information]
Paramsothy, S., Walsh, A., Borody, T., Samuel, D., Van Den Bogaerde, J., Leong, R., Connor, S., Ng, W., Mitchell, H., Kaakoush, N., et al (2015). Gastroenterologist perceptions of faecal microbiota transplantation. World Journal of Gastroenterology, 21(38), 10907-10914. [More Information]
Kashkooli, S., Andrews, J., Roberts, M., Ochieng, A., Leong, R. (2015). Inflammatory bowel disease-specific pregnancy knowledge of gastroenterologists against general practitioners and obstetricians. United European Gastroenterology Journal, 3(5), 462-470. [More Information]
Leong, R., Perry, J., Campbell, B., Koo, J., Turner, I., Corte, C., Fok, I. (2015). Knowledge and predictors of dysplasia surveillance performance in inflammatory bowel diseases in Australia. Gastrointestinal Endoscopy, 82(4), 708-714.e4. [More Information]
Leong, R. (2015). Metallic Stents for Benign Extrahepatic Biliary Stricture: In Praise of Self-Expansion? Digestive Diseases and Sciences, 60(11), 3158-3159. [More Information]
Lunney, P., Kariyawasam, V., Wang, R., Middleton, K., Huang, T., Ochieng, A., Andrews, J., Katelaris, P., Leong, R. (2015). Smoking prevalence and its influence on disease course and surgery in Crohn's disease and ulcerative colitis. Alimentary Pharmacology and Therapeutics, 42(1), 61-70. [More Information]
Bennett, A., Buckton, S., Lawrance, I., Leong, R., Moore, G., Andrews, J. (2015). Ulcerative colitis outpatient management: Development and evaluation of tools to support primary care practitioners. Internal Medicine Journal, 45(12), 1254-1266. [More Information]

show 5 more

2014

Kariyawasam, V., Selinger, C., Katelaris, P., Jones, B., McDonald, C., Barr, G., Chapman, G., Colliwshaw, J., Lunney, P., Middleton, K., Wang, R., et al (2014). Early Use of Thiopurines or Methotrexate Reduces Major Abdominal and Perianal Surgery in Crohn's Disease. Inflammatory Bowel Diseases, 20(8), 1382-1390. [More Information]
Selinger, C., Andrews, J., Titman, A., Norton, I., Jones, D., McDonald, C., Barr, G., Selby, W., Leong, R. (2014). Long-term follow up reveals low incidence of colorectal cancer, but frequent need for resection, among Australian patients with inflammatory bowel disease. Clinical Gastroenterology and Hepatology, 12(4), 644-650. [More Information]
Lee, C., Hsu, P., Nanan, B., Nanan, R., Wong, M., Gaskin, K., Leong, R., Murchie, R., Muise, A., Stormon, M. (2014). Novel de novo mutations of the interleukin-10 receptor gene lead to infantile onset inflammatory bowel disease. Journal of Crohn's and Colitis, 8(11), 1551-1556. [More Information]
Marinos, E., Lee, S., Jones, B., Corte, C., Kwok, A., Leong, R. (2014). Outcomes of single-dose peri-procedural antibiotic prophylaxis for endoscopic ultrasound-guided fine-needle aspiration of pancreatic cystic lesions. United European Gastroenterology Journal, 2(5), 391-396. [More Information]
Selinger, C., Kemp, A., Leong, R. (2014). Persistence to oral 5-aminosalicylate therapy for inflammatory bowel disease in Australia. Expert Review of Gastroenterology and Hepatology, 8(3), 329-334. [More Information]

show 2 more

2013

Selinger, C., Lal, S., Eaden, J., Jones, B., Katelaris, P., Chapman, G., McDonald, C., Leong, R., McLaughlin, J. (2013). Better disease specific patient knowledge is associated with greater anxiety in inflammatory bowel disease. Journal of Crohn's and Colitis, 7(6), e214-e218. [More Information]
Selinger, C., Andrews, J., Dent, O., Norton, I., Jones, B., McDonald, C., Cowlishaw, J., Barr, G., Selby, W., Leong, R. (2013). Cause-Specific Mortality and 30-year Relative Survival of Crohn's Disease and Ulcerative Colitis. Inflammatory Bowel Diseases, 19(9), 1880-1888. [More Information]
Selinger, C., Kinjo, Y., Jones, B., Katelaris, P., Chapman, G., McDonald, C., Lal, S., McLaughlin, J., Robinson, A., Leong, R. (2013). Conveying medication benefits to ulcerative colitis patients and effects on patient attitudes regarding thresholds for adherence. Journal of Crohn's and Colitis, 7(8), e312-e317. [More Information]
Mustaffa, N., Leong, R., Katelaris, P. (2013). Education and imaging. Gastrointestinal: spigelian hernia; an uncommon cause of longstanding intermittent abdominal pain. Journal of Gastroenterology and Hepatology, 28(1), 202. [More Information]
Selinger, C., Eaden, J., Jones, D., Katelaris, P., Chapman, G., McDonald, C., Smith, P., Lal, S., Leong, R., McLaughlin, J., et al (2013). Modifiable Factors Associated with Nonadherence to Maintenance Medication for Inflammatory Bowel Disease. Inflammatory Bowel Diseases, 19(10), 2199-2206. [More Information]

show 2 more

2012

Selinger, C., Eaden, J., Selby, W., Jones, B., Katelaris, P., Chapman, G., McDonald, C., McLaughlin, J., Leong, R., Lal, S. (2012). Patients' knowledge of pregnancy-related issues in inflammatory bowel disease and validation of a novel assessment tool ('CCPKnow'). Alimentary Pharmacology and Therapeutics, 36(1), 57-63. [More Information]
Lunney, P., Leong, R. (2012). Review article: Ulcerative colitis, smoking and nicotine therapy. Alimentary Pharmacology and Therapeutics, 36(11-12), 997-1008. [More Information]
Corte, C., Saxena, P., Tattersall, S., Selinger, C., Leong, R. (2012). When to Use Biological Agents in Inflammatory Bowel Disease. Journal of Gastroenterology and Hepatology, 27(7), 1141-1149. [More Information]

2010

Fanning, S., Kwok, A., Jones, B., Leong, R. (2010). EUS aspiration needle size: smaller is better? Gastrointestinal Endoscopy, 72(4), 904-905. [More Information]
Koo, J., Arasaratnam, M., Liu, K., Redmond, D., Connor, S., Sung, J., Leong, R. (2010). Knowledge, perception and practices of colorectal cancer screening in an ethnically diverse population. Cancer Epidemiology, 34(5), 604-610. [More Information]

2009

Sharifian, A., Humphris, J., Leong, R., Jones, D. (2009). Education and imaging. Gastrointestinal: Mycobacterium genavense enteritis in an immunosuppressed patient. Journal of Gastroenterology and Hepatology, 24(8), 1474. [More Information]
Chang, D., Johns, A., Merrett, N., Gill, A., Colvin, E., Scarlett, C., Nguyen, N., Leong, R., Cosman, P., Kelly, M., Kench, J., et al (2009). Margin Clearance and Outcome in Resected Pancreatic Cancer. Journal of Clinical Oncology, 27(17), 2855-2862. [More Information]
Nguyen, N., Biankin, A., Leong, R., Chang, D., Cosman, P., Delaney, P., Kench, J., Merrett, N. (2009). Real time intraoperative confocal laser microscopy-guided surgery. Annals of Surgery, 249(5), 735-737. [More Information]

2008

Kwok, A., Lam, T., Katelaris, P., Leong, R. (2008). Helicobacter pylori eradication therapy: indications, efficacy and safety. Expert Opinion on Drug Safety, 7(3), 271-281. [More Information]
Leong, R., Nguyen, N., MEREDITH, C., ALâ€“SOHAILY, S., KUKIC, D., Delaney, P., MURR, E., Yong, J., Merrett, N., Biankin, A. (2008). In vivo confocal endomicroscopy in the diagnosis and evaluation of celiac disease. Gastroenterology, 135(6), 1870-1876. [More Information]

Selected Grants

2019

Lyophilised Orally Administered Faecal Microbiota Transplantation in the Management of Ulcerative Colitis LOTUS Study - a Double-Blind Randomised Controlled Trial, Leong R, Gutsy Group Inc/Research Grant

In the media

Channel 9

https://www.9now.com.au/today/2018/clip-cjo69ogio000h0gmw4929stis

ABC Catalyst

https://tv.press.abc.net.au/gut-revolution-a-catalyst-special

http://www.abc.net.au/tv/programs/catalyst/transcripts/GUT_Pt2_Transcript.pdf

Faculty of Medicine and Health

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Professor Rupert Leong

Publications

By Type

By Year

Selected Grants

2019

In the media