Professor Rupert Leong

Clinical Professor
Medicine: Concord Clinical School

Telephone 612 97676111
Fax 612 97676767

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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 Service at Concord Hospital, Clinical Professor of Medicine at University of Sydney and UNSW, 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 with over 150 high quality scientific journals publications. Amongst these are senior authorship of national and international consensus guidelines in Australia and in the Asia-Pacific region. His service includes executive positions in the Research Committee of the Gastroenterological Society of Australia and section editor of theJournal of Gastroenterology and Hepatology. 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.

Current research students

Project title Research student
The Utility and Versatility of Transabdominal Ultrasound in Inflammatory Bowel Disease Brandon BARATY
Faecal Microbial Transplantation in Inflammatory Bowel Disease Craig HAIFER

Awards and honours

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

Keywords

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

Clinical Specialty

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

Selected publications

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Journals

  • 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]
  • 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]
  • 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., 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]
  • 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., Selinger, C., Leong, R. (2017). Medication adherence in inflammatory bowel disease. Intestinal Research, 15(4), 434-445. [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]
  • 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]
  • Kashkooli, S., Andrews, J., Roberts, M., Selinger, C., 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., Selinger, C., 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., AL–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]

2018

  • 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]
  • 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]
  • 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]

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]
  • 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., Selinger, C., Leong, R. (2017). Medication adherence in inflammatory bowel disease. Intestinal Research, 15(4), 434-445. [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]

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]

2015

  • 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]
  • Kashkooli, S., Andrews, J., Roberts, M., Selinger, C., 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., Selinger, C., 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]

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]

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]

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., AL–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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