Professor Barbara Ryan

Clinical Professor, Clinical Medicine

baryan@tcd.ie 3531 4142091 www.researchgate.net/profile/Barbara_Ryan5

Biography

Prof Barbara Ryan, MD, MSC, FRCPI is a Consultant Gastroenterologist at Tallaght University Hospital and Clinical Professor of Gastroenterology at TCD. She was Clinical Lead in Gastroenterology at TUH from 2007-2020. She has a special interest in pancreatobiliary disease and complex endoscopic intervention and also in inflammatory bowel disease (IBD). She had a distinguished undergraduate career including TCD Scholarship in 1990. She gained her Doctorate of Medicine (MD) degree from Trinity College in 2000 and also completed a MSc in Molecular Medicine from Trinity in 2000. She finished her higher specialist training in Gastroenterology and General Internal Medicine in Ireland in 2001 and then moved to the Medische Klinikum Rechts der Isar (MRI), Technical University of Munich, Germany, where she was a visiting Fellow in Endoscopic Ultrasound (EUS). Following this, she took up a position as a Clinical and Research Fellow at the University Hospital of Maastricht, the Netherlands, where she worked from 2001-2003. Here she honed her skills in EUS and hepatobiliary intervention and also her clinical and research interest in Inflammatory Bowel Disease (IBD). A consultant position in the UK at the Manchester Royal Infirmary followed from 2003-2004, before she took up her current consultant post at AMNCH. She was voted a 'Rising Star' in Gastroenterology by the United European Gastroenterology Federation (UEGF) in 2003 and won numerous awards for her post-graduate research, from the Irish Society of Gastroenterology, the American Gastroenterological Association (AGA) and the UEGF. She was National Specialty Director for higher specialist training in Gastroenterology in Ireland from 2012-2015. She has been on the Executive Board of the Irish Society of Gastroenterology since 2005 and is also a former Treasurer. She has been on the gastroenterology advisory panel for Colorectal Cancer for the Irish National Cancer Control Programme (NCCP). She has been actively involved in teaching (undergraduate and post-graduate) and research for the past 20 years. She has been a reviewer for numerous international journals including the Digestive Diseases and Science, Gut, Alimentary Pharmacology and Therapeutics and the European Journal of Gastroenterology and Hepatology and has delivered invited lectures in Ireland and Europe and has also frequently been on faculty at national and international meetings.

Publications and Further Research Outputs

Peer-Reviewed Publications

Ryan BM, Stockbrugger RW, Ryan JM., TIPS for gastric varices. , Gut, 52, 2003, p772 - 773Journal Article, 2003
Ryan B.M, Weir D.G, Relevance of folate metabolism in the pathogenesis of colorectal cancer, Journal of Laboratory and Clinical Medicine, 138, (3), 2001, p164 - 176Journal Article, 2001, DOI , URL
Ryan J.M, Kelsey P, Ryan B.M, Mueller P.R, Alendronate-induced esophagitis: Case report of a recently recognized form of severe esophagitis with esophageal stricture - Radiographic features, Radiology, 206, (2), 1998, p389 - 391Journal Article, 1998, URL
Ryan B.M, Russel M.G.V.M, Schurgers L, Wichers M, Sijbrandij J, Stockbrugger R.W, Schoon E, Effect of antitumour necrosis factor-Î± therapy on bone turnover in patients with active Crohn's disease: A prospective study, Alimentary Pharmacology and Therapeutics, 20, (8), 2004, p851 - 857Journal Article, 2004, DOI , URL
Ryan B.M, Russel M.G.V.M, Langholz E, Stockbrugger R.W, Aminosalicylates and colorectal cancer in IBD: A not-so bitter pill to swallow, American Journal of Gastroenterology, 98, (8), 2003, p1682 - 1687Journal Article, 2003, DOI , URL
Veerappan S.G, O'Morain C.A, Daly J.S, Ryan B.M, The effects of antitumour necrosis factor-Î± on bone metabolism in inflammatory bowel disease, Alimentary Pharmacology and Therapeutics, 33, (12), 2011, p1261 - 1272Journal Article, 2011, DOI , URL
De Vries G.J, Ryan B.M, De BiÃšvre M, Driessen A, Stockbrugger R.W, Koek G.H, Cirrhosis related chylous ascites successfully treated with TIPS, European Journal of Gastroenterology and Hepatology, 17, (4), 2005, p463 - 466Journal Article, 2005, DOI , URL
Wolters F, Ryan B, Beets-Tan R, Dejong C, Delayed massive hemobilia after biliary stenting, Endoscopy, 35, (11), 2003, p976 - 977Journal Article, 2003, DOI , URL
Russel M.G.V.M, Ryan B.M, Dagnelie P.C, De Rooij M, Sijbrandij J, Feleus A, Hesselink M, Muris J.W, Stockbrugger R, Insurance problems among inflammatory bowel disease patients: Results of a Dutch population based study, Gut, 52, (3), 2003, p358 - 362Journal Article, 2003, DOI , URL
O'Donnell S, O'Sullivan M, O'Morain C.A, Ryan B.M, The clinical significance of antimicrobial serologic responses within an Irish Crohn's disease population, European Journal of Gastroenterology and Hepatology, 25, (12), 2013, p1464 - 1469Journal Article, 2013, DOI , URL
O'Donnell S, Kelly O.B, Breslin N, Ryan B.M, O'Connor H.J, Swan N, O'Morain C.A, Eosinophilic oesophagitis: An Irish experience, European Journal of Gastroenterology and Hepatology, 23, (12), 2011, p1116 - 1121Journal Article, 2011, DOI , URL
Lo G.-H, Lai K.-H, Ryan B.M, Stockbrugger R.W, Ryan J.M, Should GOV1 be treated as for esophageal varices? [2] (multiple letters), Gastroenterology, 127, (3), 2004, p1014 - 1015Journal Article, 2004, DOI , URL
O'Donnell S, Qasim A, Ryan B.M, O'Connor H.J, Breslin N, O'Morain C.A, The role of capsule endoscopy in small bowel Crohn's disease, Journal of Crohn's and Colitis, 3, (4), 2009, p282 - 286Journal Article, 2009, DOI , URL
Ryan B.M, Stockbrugger R.W, Ryan J.M, Tripathi D, Therapondos G, Hayes P.C, Redhead D.N, Tips for gastric varices [7] (multiple letters), Gut, 52, (5), 2003, p772-Journal Article, 2003, DOI , URL
O'Donnell S, Crotty P.L, O'Sullivan M, Breslin N, O'Connor H.J, O'Morain C.A, Ryan B.M, Isolated active ileitis: Is it a mild subtype of Crohn's disease?, Inflammatory Bowel Diseases, 19, (9), 2013, p1815 - 1822Journal Article, 2013, DOI , URL
Ryan B.M, Murphy G, O'Morain C.A, Host cytokine responses to Helicobacter pylori: An important determinant of clinical outcome, Irish Journal of Medical Science, 170, (2), 2001, p90 - 91Journal Article, 2001, URL
Veerappan S.G, Healy M, Walsh B.J, Oâ Morain C.A, Daly J.S, Ryan B.M, Adalimumab Therapy Has a Beneficial Effect on Bone Metabolism in Patients with Crohnâ s Disease, Digestive Diseases and Sciences, 60, (7), 2015, p2119 - 2129Journal Article, 2015, DOI , URL
Thornhill J.A, Long R.M, Neary P, O'Connor H.J, Ryan B, Fraser I, The pitfalls of treating anorectal conditions after radiotherapy for prostate cancer., Irish medical journal, 105, (3), 2012, p91 - 93Journal Article, 2012, URL
Keane R, O'Connor A, Ryan B, Breslin N, O'Connor H, Qasim A, O'Morain C, Inappropriate colonoscopic surveillance of hyperplastic polyps, Irish Medical Journal, 104, (7), 2011Journal Article, 2011, URL
Hussey M, Mc Garrigle R, Kennedy U, Holleran G, Kevans D, Ryan B, Breslin N, Mahmud N, McNamara D, Long-term assessment of clinical response to adalimumab therapy in refractory ulcerative colitis., European journal of gastroenterology & hepatology, 28, (2), 2016, p217-21Journal Article, 2016, DOI
Stack R, Parihar V, Ryan B, Alakkari A, CMV pneumonitis in an immunosuppressed Crohn's disease patient., QJM : monthly journal of the Association of Physicians, 2016Journal Article, 2016, DOI
Hall B, Holleran G, Chin JL, Smith S, Ryan B, Mahmud N, McNamara D, A prospective 52 week mucosal healing assessment of small bowel Crohn's disease as detected by capsule endoscopy., Journal of Crohn's & colitis, 8, (12), 2014, p1601-9Journal Article, 2014, DOI
Ní Chonchubhair HM, O Shea B,, Kavanagh DO, Ryan BM, Duggan SN, Conlon KC, 2. Chronic pancreatitis in primary and hospital-based care in Ireland: The management of an orphan disease, Journal of the Pancreas, 17, (4), 2016, p216 - 222Journal Article, 2016
V Parihar, R Stack, A Alakkiri, BM Ryan, A case of incidental diagnosis of renal cell carcinoma by endoscopic ultrasound, Journal of gastric disorders and therapy, 2, (4), 2016, p125 - 126Journal Article, 2016, DOI
Dominguez Castro P, Harkin G, Hussey M, Christopher B, Kiat C, Chin JL, Trimble V, McNamara D, MacMathuna P, Egan B, Ryan B, Kevans D, Farrell R, Byrnes V, Mahmud N, McManus R. , Changes in Presentation of Celiac Disease in Ireland From the 1960s to 2015, Clinical Gastroenterology and Hepatology, 15, (1), 2017, p864 - 871Journal Article, 2017, DOI
Tighe D, Hall B, Jeyarajah SK, Smith S, Breslin N, Ryan B, McNamara D., One-Year Clinical Outcomes in an IBD Cohort Who Have Previously Had Anti-TNFa Trough and Antibody Levels Assessed, Inflammatory Bowel Disease, 23, (7), 2017, p1154 - 1159Journal Article, 2017, DOI
Parihar V, Stack R. Alakkari A. Breslin N, Ryan B, Crowther S, McNamara D., Clinical Outcome of Patients with Raised Intraepithelial Lymphocytes with Normal Villous Architecture on Duodenal Biopsy, Digestion, 95, 2017, p288 - 292Journal Article, 2017, DOI
Parihar V, Ridgway PF, Conlon, KC, Huggett M, Ryan BM, 7. The Role of Endoscopic Intervention in the Management of Inflammatory Pancreatic Fluid Collections. , European Journal of Gastroenterology and Hepatology, Apr;29, (4), 2017, p371 - 379Journal Article, 2017, DOI
Ryan BM, Venkatachalapathy SV, Huggett MT, Safety of lumen-apposing metal stents (LAMS) for pancreatic fluid collection drainage, Gut, Dec 16 , (EPub ahead of print), 2016Journal Article, 2016
Stack R, McLoughlin J, Gillis A, Ryan BM, Post-ERCP Emphysematous cholecystitis in a young woman: A rare and potentially fatal complication, Case Reports in Gastrointestinal Medicine, (March), 2017, pdoi: 10.1155/2017/1971457Journal Article, 2017, DOI
Alakkari A, Stack R, Parihar V, Crowther S, Ryan B, Acute granulomatous hepatitis in an immunosuppressed patient secondary to Q fever, Quarterly Journal Of Medicine, (May 26 [Epub]), 2017, pdoi: 10.1093/qjmed/hcx 105Journal Article, 2017
Tighe D, Smith S, O'Connor A, Breslin N, Ryan B, McNamara D , Positive relationship between infliximab and adalimumab trough levels at completion of induction therapy with clinical response rates, at a tertiary referral center, JGH Open, 1, (1), 2017, p4 - 10Journal Article, 2017, DOI
Memba R and Duggan SN and Ni Chonchubhair HM and Griffin OM and Bashir Y and O'Connor DB and Murphy A and McMahon J and Volcov Y and Ryan BM and Conlon KC, The potential role of gut microbiota in pancreatic disease: A systematic review., Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.], 2017Journal Article, 2017, DOI
O'Connell J, Rowan C, Stack R, Harkin G, Parihar V, Chan G, Breslin N, Cullen G, Dunne C, Egan L, Harewood G, Leyden J, MacCarthy F, MacMathuna P, Mahmud N, McKiernan S, McNamara D, Mulcahy H, Murray F, O'Connor A, O'Toole A, Patchett S, Ryan B, Sheridan J, Slattery E, Doherty G, Kevans D., Golimumab effectiveness and safety in clinical practice for moderately active ulcerative colitis., European Journal of Gastroenterology, 30, (9), 2018, p1019 - 1026Journal Article, 2018, DOI
Ní Chonchubhair HM, Bashir Y, Dobson M, Ryan BM, Duggan SN, Conlon KC, The prevalence of small intestinal bacterial overgrowth in non-surgical patients with chronic pancreatitis and pancreatic exocrine insufficiency (PEI)., Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.], 2018Journal Article, 2018, DOI
Veerappan SG, Healy M, Walsh B, O'Morain CA, Daly JS, Ryan BM, A 1-year prospective study of the effect of infliximab on bone metabolism in inflammatory bowel disease patients., European journal of gastroenterology & hepatology, 2016Journal Article, 2016
Maung SW, Desmond R, McHugh J, Ryan B, Neary P, Jeffers M, Enright H, A coincidence or a rare occurrence? A case of plasmablastic lymphoma of the small intestines following infliximab treatment for Crohn's disease., Annals of hematology, 2015Journal Article, 2015
Sandborn WJ, Feagan BG, Rutgeerts P, Hanauer S, Colombel JF, Sands BE, Lukas M, Fedorak RN, Lee S, Bressler B, Fox I, Rosario M, Sankoh S, Xu J, GEMINI 2 Study Group, Vedolizumab as induction and maintenance therapy for Crohn's disease., The New England journal of medicine, 2013Journal Article, 2013
Feagan BG, Rutgeerts P, Sands BE, Hanauer S, Colombel JF, Sandborn WJ, Van Assche G, Axler J, Kim HJ, Danese S, Fox I, Milch C, Sankoh S, Wyant T, GEMINI 1 Study Group, Vedolizumab as induction and maintenance therapy for ulcerative colitis., The New England journal of medicine, 2013Journal Article, 2013
Teo M, Ryan B, Swan N, McDermott RS, A Case of Metastatic Renal Cell Cancer Presenting as Jaundice., World journal of oncology, 2010Journal Article, 2010
O'Morain N, O'Gorman S, McNamara D & Ryan B., Patients' attitudes toward treatment withdrawal in inflammatory bowel disease., Scandinavian Journal of Gastroenterology, 53, (10-11), 2018, p1428-Journal Article, 2018, DOI
Ryan BM, Romberg M, Wolters F, Stockbrugger RW, Extensive forearm deep venous thrombosis following a severe infliximab infusion reaction., European journal of gastroenterology & hepatology, 2004Journal Article, 2004
Ryan JM, Ryan BM, Smith TP, Antibiotic prophylaxis in interventional radiology., 2004Meeting Abstract, 2004
Ryan BM, Stockbrugger RW, Ryan JM, A pathophysiologic, gastroenterologic, and radiologic approach to the management of gastric varices., Gastroenterology, 2004Journal Article, 2004
Ryan, J.M., Ryan, B.M., Smith, T.P., Antibiotic prophylaxis in interventional radiology, Journal of Vascular and Interventional Radiology, 15, (6), 2004, p547-556Journal Article, 2004
Callaghan GM, Kelleher FC, Ridgway PF, Crowther S, Alakkari A, Ryan BM, A Case of Primary Gastric Melanoma Exhibiting a Rare BRAF V600R Mutation., European journal of case reports in internal medicine, 2018Journal Article, 2018
Venkatachalapathy SV, Bekkali N, Pereira S, Johnson G, Oppong K, Nayar M, Leeds J, Paranandi B, Penman I, Carroll N, Godfrey E, James M, Aithal G, McKay C, Devlin J, Wong T, Makin A, Ryan B, Huggett M., Multicenter experience from the UK and Ireland of use of lumen-apposing metal stent for transluminal drainage of pancreatic fluid collections., Endoscopy international open, 6, (3), 2018, pE259-E265Journal Article, 2018, DOI
Mohan LJ, Daly JS, Ryan BM, Ramtoola Z., The future of nanomedicine in optimising the treatment of inflammatory bowel disease., Scandinavian journal of gastroenterology, 2019, p1-9Journal Article, 2019, DOI
Delaney S, O'Connor G, Reardon W, Murphy SJX, Tierney S, Ryan BM, Delaney H, Doherty CP, Guiney M, Brennan P, Tobin WO, McCabe DJH., Extracranial and Intracranial Vasculopathy With "Moyamoya Phenomenon" in Association With Alagille Syndrome., Frontiers in neurology, 9, 2019, p1194Journal Article, 2019, DOI , TARA - Full Text
O'Morain N, Kumar L, O'Carroll Lolait C, Ryan B, Infliximab induced cardiac tamponade, Irish Medical Journal, 112, (3), 2019, p902Journal Article, 2019
Fennessy, A M, Hanna, C, Breslin, N, Mc Namara, D, Anwar, S, O'Connor, A, Ryan, B M, P581 Complementary and alternative therapies for inflammatory bowel disease, 13, (Supplement_1), 2019, ppS405-S406Meeting Abstract, 2019, DOI
O'Connell, J, Ismail, M S, McCormack, M, McDonagh, P, Argue, R, Breslin, N, Crowley, V, Cullen, G, Doherty, G A, Dunne, C, Hartery, K, MacCarthy, F, McKiernan, S, Mulcahy, H, O'Connor, A, O'Morain, C, Ryan, B, Sheridan, J, Healy, M, McNamara, D, Kevans, D, P401 Association between induction vedolizumab drug levels and therapy outcome in inflammatory bowel disease, 13, (Supplement_1), 2019, ppS308-S309Meeting Abstract, 2019, DOI
Parihar, Vikrant, Sopheno-Falco, Julia, Maheshwari, Pardeep, O'Moran, Neil, Graziadei, Vivien, O'Grady Walshe, Aishling, O'Dwyer, Orla, Kumar, Lakshman, Fennessy, Sean, Breslin, Niall, Ryan, Barbara M., McNamara, Deirdre, Adherence to European Polypectomy Guidelines: Retrospective Experience from a Tertiary Irish Hospital, Gastrointestinal Tumors, 5, (3-4), 2019, p82-89Journal Article, 2019, DOI
O'Morain, Neil, Shahin, Ammar, Ryan, Barbara, McNamara, Deirdre, Mo1690 CHROMOENDOSCOPY POST-EMR REDUCES THE RATE OF INCOMPLETE POLYP RESECTION, 87, (6), 2018, ppAB480Meeting Abstract, 2018, DOI
Stack, R, O'Brien, C, Nuzum, T, Kumar, L, Maheshwari, P, Breslin, N, Ryan, B, O'Connor, A, Murphy, I, Mc Namara, D, P259 Measures of predicting inflammatory and fibrotic strictures in Crohn"s disease patients using magnetic resonance, 12, (supplement_1), 2018, ppS231-S232Meeting Abstract, 2018, DOI
Judge, C, McGettigan, N, Ryan, T, Hazel, K, Singh, P, Parihar, V, Stack, R, O'Connor, A, Dunne, C, Cullen, G, Egan, L, Harewood, G, MacCarthy, F, McKiernan, S, Mulcahy, H, Murray, F, Patchett, S, Sheridan, J, Trevian, D, Breslin, N, Farrell, R, Keohane, J, Kelly, O, McNamara, D, Ryan, B, Smyth, C, O'Morain, C, Sengupta, S, Slattery, E, Doherty, G, Kevans, D, O'Toole, A, P597 Effectiveness and safety of vedolizumab therapy in an ulcerative colitis cohort with significant prior anti-TNF exposure, 12, (supplement_1), 2018, ppS410-S411Meeting Abstract, 2018, DOI
O'Morain, N, Farrell, G, Hanly, M, Veerappan, S, McNamara, D, Breslin, N, O'Morain, C, Healy, M, Ryan, B, P463 Long-term effects of anti-TNF therapy on bone metabolism, 12, (supplement_1), 2018, ppS339-S339Meeting Abstract, 2018, DOI
Christopher, B, Altamimi, K, Campbell, N, Rynne-Lyons, R, Alakkari, A, O'Connor, A, McNamara, D, Breslin, N, Ryan, B, P412 White cell count (WCC) and mean corpuscular volume (MCV) as surrogate markers for thiopurine monitoring in inflammatory bowel disease (IBD) treatment: A single-centre experience, 12, (supplement_1), 2018, ppS312-S313Meeting Abstract, 2018, DOI
Castro, Patricia Dominguez, Harkin, Grace, Hussey, Mary, Christopher, Brian, Kiat, Clifford, Chin, Jun Liong, McNamara, Deirdre, MacMathuna, Padraic, Egan, Brian J., Ryan, Barbara, Kevans, David, Farrell, Richard, Byrnes, Valerie, McManus, Ross, Pattern of Thyroid Disease Presentation in a Cohort of Celiac Patients Diagnosed from 1960-2015, 152, (5), 2017, ppS484Meeting Abstract, 2017, DOI
Castro, Patricia Dominguez, Harkin, Grace, Hussey, Mary, Christopher, Brian, Kiat, Clifford, Chin, Jun Liong, McNamara, Deirdre, MacMathuna, Padraic, Egan, Brian J., Ryan, Barbara, Kevans, David, Farrell, Richard, Byrnes, Valerie, McManus, Ross, Co-Existence of Celiac Disease and other Immune-Mediated Conditions in Celiac Patients, 152, (5), 2017, ppS483-S484Meeting Abstract, 2017, DOI
Rowan, C.R., Alakkari, A., Moran, C., O'Connell, J., Cullen, G., Mulcahy, H., O'Morain, C., McNamara, D., Leyden, J., MacMathuna, P., O'Toole, A., Patchett, S., McKiernan, S., Kevans, D., Doherty, G.A., Ryan, B., P594 Ustekinumab treatment effectiveness in clinical practice " a multicentre retrospective review of long-term outcomes in Crohn's disease, 11, (suppl_1), 2017, ppS383-S384Meeting Abstract, 2017, DOI
Tighe, D., Breslin, N., Ryan, B., McNamara, D., P602 Clinical/biochemical predictors of response to anti-TNFa therapies in a tertiary referral centre, 11, (suppl_1), 2017, ppS386-S387Meeting Abstract, 2017, DOI
Stack, R., Ridgeway, L., Moran, N., Breslin, N., Ryan, B., Mc Namara, D., P276 A snap-shot review of small bowel capsule endoscopy in the setting of inflammatory bowel disease, 11, (suppl_1), 2017, ppS218-S218Meeting Abstract, 2017, DOI
O'Connell, J., Rowan, C., Chan, G., Harkin, G., Parihar, V., Layden, J., Patchett, S., Stack, R., MacMathuna, P., O'Toole, A., Ryan, B., MacCarthy, F., McKiernan, S., Doherty, G., Eagan, L., Kevans, D., P403 Golimumab therapy for ulcerative colitis " an Irish multicentre experience, 11, (suppl_1), 2017, ppS282-S282Meeting Abstract, 2017, DOI
Mohamed, G., Crotty, P., McNamara, D., Breslin, N., Ryan, B.M., P208 Long term follow up of lymphocytic colitis patients, 11, (suppl_1), 2017, ppS181-S182Meeting Abstract, 2017, DOI
Venkatachalapathy, SV, Makin, A, Pereira, SP, Johnson, GJ, Bekkali, N, Penman, I, Oppong, KW, Nayar, MK, Carroll, NR, Godfrey, EM, Ryan, BM, Parihar, V, McKay, CJ, Huggett, MT, OC-073"The First Multicentre Experience from The UK and Ireland of the Use of the Hot Axios System for Transluminal Drainage of Pancreatic Fluid Collections, 65, (Suppl 1), 2016, ppA44.1-A44Meeting Abstract, 2016, DOI
Venkatachalapathy, Suresh Vasan, Makin, Alistair, Pereira, Stephen P., Johnson, Gavin J., Bekkali, Noor, Penman, Ian, Oppong, Kofi W., Nayar, Manu K., Carroll, Nicholas R., Godfrey, Edmund M., Ryan, Barbara M., Parihar, Vikrant, Huggett, Matthew T., The first multicentre experience from the UK and Ireland of the use of the hot AXIOS system for transluminal drainage of pancreatic fluid collections, 16, (3), 2016, ppS105Meeting Abstract, 2016, DOI
Hussey, Mary, McGarrigle, Robert, Kennedy, Una, Holleran, Grainne, Kevans, David, Breslin, Niall, Ryan, Barbara, Mahmud, Nasir, McNamara, Deirdre, Sa1246 Long Term Assessment of Clinical Response to Adalimumab Therapy in Refractory Ulcerative Colitis, 148, (4), 2015, ppS-268Meeting Abstract, 2015, DOI
Burska, S, Ryan, B, MUSCULOSKELETAL SYMPTOMS AMONGST ENDOSCOPISTS, 62, (Suppl 2), 2013, ppA45.1-A45Meeting Abstract, 2013, DOI
Alakkari, A, Gammell, Y, O'Connor, H, McNamara, D, Breslin, N, Ryan, B, AUDIT OF THE APPROPRIATENESS OF HEPATOMA SURVEILLANCE IN A COHORT OF PATIENTS ATTENDING A DEDICATED HAEMOCHROMATOSIS CLINIC, 62, (Suppl 2), 2013, ppA28.3-A29Meeting Abstract, 2013, DOI
Alakkari, A, Leen, R, Breslin, N, Ryan, B, DIAGNOSTIC YIELD OF FOCUSED ENDOSCOPIC ULTRASOUND EXAMINATION OF THE BILIARY TREE IN A TERTIARY REFERRAL CENTRE, 62, (Suppl 2), 2013, ppA28.2-A28Meeting Abstract, 2013, DOI
O'Connor, Anthony, Alakkari, Alaa, Ryan, Barbara M., Breslin, Niall, McNamara, Deirdre, O'Connor, Humphrey J., O'Morain, Colm A., Mo1580 Age, Smoking, Male Gender and Regular Aspirin use Predict Premalignant Conditions of the Stomach in a Low Gastric Cancer Prevalence Cohort, 142, (5), 2012, ppS-633Meeting Abstract, 2012, DOI
O'Donnell, Sarah, O'Sullivan, Maria, Breslin, Niall, O'Connor, Humphrey J., O'Morain, Colm A., Crotty, Paul L., Ryan, Barbara M., Isolated Active Ileitis: Serological and Genetic Profile, 140, (5), 2011, ppS-1Meeting Abstract, 2011, DOI
Ryan, B.M., Brennan, E.G., O'Hare, N., McDermott, R., Keeling, P.W.N., Byrne, P.J., Post-prandial EGG dysrhythmia in NUD is not predictive of altered gastric emptying and is more common in HP(+) than HP(") patients: (Preliminary results of on-going study), 114, 1998, ppA829Meeting Abstract, 1998, DOI
Ryan, BM, Byrne, PJ, McKiernan, S, Quill, R, Keeling, PWN, Detailed symptom evaluation in chronic constipation can help identify those with different pathophysiological disorders of defaecation and hence direct further clinical investigation, 114, 1998, ppA828-A829Meeting Abstract, 1998, DOI
Ryan, BM, Byrne, PJ, Quill, R, Keeling, PWN, Pudendal nerve neuropathies are extremely common in chronic constipation and faecal incontinence, 114, 1998, ppA829Meeting Abstract, 1998, DOI
Ryan, Barbara Mary, Daly, Jacqueline S., McManus, Ross, Carton, Eleanor, Keeling, Napoleon, Kelleher, Dermot, Impact of polymorphisms in the TNF alpha promoter region on outcome in esophageal cancer, 118, (4), 2000, ppA37Meeting Abstract, 2000, DOI
Ryan, Barbara Mary, Molloy, Anne, McManus, Ross, Daly, Jacqueline S., Scott, John M., Kelleher, Dermot, Weir, Donald G., Polymorphism and loss of heterozygosity (LOH) of themethylenetetrahydrofolate (MTHFR) enzyme is associated with the development of colorectal cancer, 118, (4), 2000, ppA703Meeting Abstract, 2000, DOI
Ryan, Barbara M., McManus, Ross, Daly, Jacqueline S., LeFort, Francois, Keeling, Napoleon, Weir, Donald G., Kelleher, Dermot, Post-operative serum mutant k-ras- a sensitive marker of disease recurrence in patients with colorectal cancer, 118, (4), 2000, ppA514Meeting Abstract, 2000, DOI
Ryan, Barbara Mary, McManus, Ross, Daly, Jacqueline S., Carton, Eleanor, Reynolds, John V., Kelleher, Dermot, A polymorphism in p73, a novel p53-homologue, confers protection against the development of esophageal cancer, 118, (4), 2000, ppA704Meeting Abstract, 2000, DOI
Ryan, Barbara M., Russel, Maurice G., Schurgers, Leon, Wolters, Frank, Stockbrugger, Reinhold W., Schoon, Erik, Infliximab therapy has a benefical effect on bone formation but not bone resorption in patients with active Crohn's disease, 124, (4), 2003, ppA214Meeting Abstract, 2003, DOI
Daly, Jacqueline, McManus, Ross, Hagan, Richard, Ryan, Anthony, Ryan, Barbara, Ang, Yeng, Farrell, Richard, Weir, Donald, Kelleher, Dermot, The TNF region in celiac disease, 124, (4), 2003, ppA658Meeting Abstract, 2003, DOI
McLoughlin, RM, Shiel, E, Sebastian, SS, Ryan, B, O'Connor, HJ, O'Morain, C, A new marker for colorectal cancer, 37, (05), 2005Meeting Abstract, 2005, DOI
Chan, V, O'Morain, C, O'Connor, H, Ryan, B, Distribution of polyps and cancer in the colon, 37, (05), 2005Meeting Abstract, 2005, DOI
Sarwar, S, Anwar, M, Ryan, B, O'Morain, C, Standards of colonoscopy in tallaght hospital; need for beyond the caecum, 37, (12), 2006Meeting Abstract, 2006, DOI
Sarwar, S, Anwar, MM, Egan, B, Ryan, B, Breslin, N, O'Morain, C, Changing Prevalence of Helicobacter pylori Infection in Elderly Dyspeptic Patients, 38, (11), 2006Meeting Abstract, 2006, DOI
Veerappan, SG, O'Morain, CA, Ryan, BM, Prevalence and Evolution of Hypertransaminasemia in the Newly Diagnosed Coeliac Patients: An Irish Experience in a Dublin Hospital, 38, (11), 2006Meeting Abstract, 2006, DOI
Veerappan, SG, Breslin, N, O'Morain, CA, Ryan, BM, Investigations of Asymptomatic Patients with Abnormal Liver Function Tests (LFT's) in the Outpatient Setting. Experience and Cost Analysis in the Real World, 38, (11), 2006Meeting Abstract, 2006, DOI
Shiel, E, McLoughlin, R, Ryan, B, O'Morain, CA, Stool DNA Testing " Not Quite There Yet?, 38, (11), 2006Meeting Abstract, 2006, DOI
Anwar, MM, Sarwar, S, Egan, BJ, Veerapan, S, Ryan, B, Breslin, N, O'Morain, C, Infliximab in Patients with Moderate to Severe Ulcerative Colitis with a Failed Response to Medical Therapy, 38, (11), 2006Meeting Abstract, 2006, DOI
Chan, VO, Veerappan, SG, Thornton, O, Dobson, M, Ryan, B, Breslin, N, O'Connor, H, Crotty, P, O'Morain, C, Prevalence of Helicobacter pylori: An Irish Experience in a Dublin Associated Teaching Hospital over a Six Year Period, 38, (11), 2006Meeting Abstract, 2006, DOI
Anwar, M, O'Sullivan, M, Sarwar, S, Ryan, B, Breslin, N, O'Connor, H, O'Morain, C, Adalimumab in the Management of Crohn's Disease (CD) Patients with a Loss of Response to Infliximab, 38, (11), 2006Meeting Abstract, 2006, DOI
Egan, BJ, Sarwar, S, Anwar, M, O'Morain, C, Ryan, B, Alpha 1 Anti Trypsin Levels in Asymptomatic Patients with Abnormal Liver Function Tests, 38, (11), 2006Meeting Abstract, 2006, DOI
Holmes, Kate, Egan, Brian J., Heetun, Zaid S., Breslin, Niall, Ryan, Barbara M., Swan, Niall, O'Connor, Humphrey J., O'Morain, Colm A., W1882 Identification of Smoking As a Risk Factor for Gastric Intestinal Metaplasia, 134, (4), 2008, ppA-725Meeting Abstract, 2008, DOI
Veerappan, Sundaram G., Healy, Martin, Walsh, J Bernard, Kennedy, Mary, O'Morain, Colm A., Ryan, Barbara M., Daly, Jacqueline, T1239 Infliximab in Inflammatory Bowel Disease: `Can We Heal Two Disease with One Drug?", 134, (4), 2008, ppA-513Meeting Abstract, 2008, DOI
O'Connor, Anthony, Ryan, Barbara M., O'Connor, Humphrey J., O'Morain, Colm A., Qasim, Asghar, Breslin, Niall, Colonoscopy in Adults Younger Than 30 Years: A Blunt Instrument?, 69, (5), 2009, ppAB317Meeting Abstract, 2009, DOI
O'Donnell, Sarah, Crotty, Paul, Breslin, Niall, Swan, Niall, O'Morain, Colm A., Ryan, Barbara M., M1106 The Serological Profile of Isolated Active Ileitis, 136, (5), 2009, ppA-351Meeting Abstract, 2009, DOI
O'Donnell, Sarah, O'Sullivan, Maria, Breslin, Niall, Qasim, Asghar, O'Morain, Colm A., Ryan, Barbara M., M1102 ANCA, ASCA, Anti-OmpC and Anti-Cbir Antibodies Within An Irish Crohns Disease Cohort, 136, (5), 2009, ppA-350Meeting Abstract, 2009, DOI
S Semenov, M Syafiq Ismail, A O'Connor, N Breslin, B Ryan, D McNamara, POSITIVE IMPACT OF SWITCHING FROM BSG TO ESGE POST POLYPECTOMY GUIDELINES ON A COLONOSCOPY SURVEILLANCE WAITING LIST, Endoscopy, ESGE Days, Prague, April 2019, 51, (4), 2019, ppS215-Meeting Abstract, 2019, DOI
MS Ismail, S Semenov, A O'Connor, N Breslin, B Ryan, D McNamara, COLON CAPSULE ENDOSCOPY WITH OR WITHOUT BIOMARKERS AS A VIABLE ALTERNATIVE TO COLONOSCOPY IN UNSELECTED PATIENTS WITH LOWER GI SYMPTOMS: RESULTS OF A PILOT STUDY, Endoscopy, ESGE Days, Prague, April 2019, 51, (4), 2019, ppS161-Meeting Abstract, 2019, DOI
M Syafiq Ismail, N O'Morain, B Ryan, D McNamara, BALLOON SPHINCTEROPLASTY IS A SAFE AND RELIABLE METHOD TO ACHIEVE BILIARY CLEARANCE IN AN AT RISK CHOEDOCHOLITHIASIS COHORT, Endoscopy, ESGE Days, Prague, April 2019, 51, (4), 2019, ppS234-Meeting Abstract, 2019, DOI
B. M. Ryan, A. M. Molloy, R. McManus, Q. Arfin, D. Kelleher, J. M. Scott and D. G. Weir, The methylenetetrahydrofolate reductase (MTHFR) gene in colorectal cancer: role in tumor development and significance of allelic loss in tumor progression, International journal of gastrointestinal cancer, 30, (3), 2001, p105-111Journal Article, 2001, DOI
B. M. Ryan, R. O. McManus, J. S. Daly, P. W. Keeling, D. G. Weir, F. Lefort and D. Kelleher, Serum mutant K-ras in the colorectal adenoma-to-carcinoma sequence. Implications for diagnosis, postoperative follow-up, and early detection of recurrent disease, Annals of the New York Academy of Sciences, 906, 2000, p29-30Journal Article, 2000, URL
B. M. Ryan and D. Kelleher, Refractory celiac disease, Gastroenterology, 119, (1), 2000, p243-51Journal Article, 2000, URL
Ryan BM, Lefort L, McManus R, Daly J, Keeling PW, Weir DG, Kelleher D, A prospective study of circulating mutant KRAS2 in the serum of patients with colorectal neoplasia: strong prognostic indicator in postoperative follow up, Gut, 52, (1), 2003, p101-108Journal Article, 2003, DOI , TARA - Full Text
F. Khosa, J. G. McNulty, N. Hickey, P. O'Brien, A. Tobin, N. Noonan, B. Ryan, P. W. Keeling, D. P. Kelleher and G. S. McDonald, Transvenous liver biopsy via the femoral vein, Clinical radiology, 58, (6), 2003, p487-91Journal Article, 2003, URL
B. M. Ryan, G. S. McDonald, R. Pilkington and D. Kelleher, The development of hepatic granulomas following interferon-alpha2b therapy for chronic hepatitis C infection, European journal of gastroenterology & hepatology, 10, (4), 1998, p349-51Journal Article, 1998, URL
Ryan BM, McManus R, Daly JS, Keeling NWP, Weir DG, Lefort F, Kelleher D, Serum mutant K-ras in the colorectal adenoma-to-carcinoma sequence. Implications for diagnosis, postoperative follow-up, and early detection of recurrent disease, Annals of the New York Academy of Sciences, 906, 2000, p29-30Journal Article, 2000, URL
B. M. Ryan, R. McManus, J. S. Daly, E. Carton, P. W. Keeling, J. V. Reynolds and D. Kelleher, A common p73 polymorphism is associated with a reduced incidence of oesophageal carcinoma, British Journal of Cancer, 85, (10), 2001, p1499-1503Journal Article, 2001, DOI
Daly JS, McManus R, Whelan R, Ryan B, Ang YS, Farrell R, Hagan R, Weir DG, Kelleher D, Analysis of single nucleotide polymorphisms (SNPS) in the tumour necrosis factor (TNF) gene in celiac disease, GASTROENTEROLOGY, 118, (4), 2000, ppA365 - A365Meeting Abstract, 2000
Sarwar S, Anwar MM, Ryan B, O'Morain C., Colonoscopy completion rates--are we prepared for a national screening programme?, Irish Medicial Journal, Oct;100 , (9), 2007, p585-7.Journal Article, 2007
Murphy G, Thornton J, McManus R, Swan N, Ryan B, Hughes D, O'Morain C, O'Sullivan M, Association of gastric disease with polymorphisms in the inflammatory related genes IL-1B, IL-1RN, IL-10, TNF and TLR4 , European Journal of Gastroenterology and Hepatology, 21, (6), 2009, p630-635Journal Article, 2009, DOI
Veerpan SG, Kennedy M, O'Morain CA, Ryan BM, Retinal vein thrombosis following infliximab treatment for severe left-sided ulcerative colitis, European Journal of Gastroenterolgy and Hepatology, 20, (6), 2008, p588 - 589Journal Article, 2008
Abbasakoor NO, Kavanagh DO, Moran DC, Ryan B, Neary PC, Midgut pain due to an intussuscepting terminal ileal lipoma: a case report., Journal of Medical Case Reports, 4, 2010, p51Journal Article, 2010, DOI , URL , TARA - Full Text
O'connor A, Taneike I, Nami A, Fitzgerald N, Murphy P, Ryan B, O'connor H, Qasim A, Breslin N, O'moráin C, Helicobacter pylori resistance to metronidazole and clarithromycin in Ireland., European journal of gastroenterology & hepatology, 22, (9), 2010, p1123-7Journal Article, 2010, DOI
Wolters FL, Joling C, Russel MG, Sijbrandij J, De Bruin M, Odes S, Riis L, Munkholm P, Bodini P, Ryan B, O'Morain C, Mouzas IA, Tsianos E, Vermeire S, Monteiro E, Limonard C, Vatn M, Fornaciari G, Rodriguez D, Groot W, Moum B, Stockbrügger RW, Treatment inferred disease severity in Crohn's disease: evidence for a European gradient of disease course., Scandinavian journal of gastroenterology, 42, (3), 2007, p333-44Journal Article, 2007, DOI
Qasim A, Ryan B, Breslin N, O'Morain C, Gastric retention and wireless capsule endoscopy in adults: a modified technique for direct duodenal deployment., Gut, 59, (7), 2010, p1004-5Journal Article, 2010, DOI
O'Connor A, Keane RA, Egan B, Lee N, O'Connor H, Qasim A, Ryan B, Breslin N, McNamara D, O'Morain C, Adherence to colorectal polyp surveillance guidelines: is there scope to increase the opportunities for screening?, European Journal of Cancer Prevention : the official journal of the European Cancer Prevention Organisation (ECP), 20, (1), 2010, p40 - 45Journal Article, 2010, DOI
Shuhaibar M, Walsh C, Lindsay F, Lee N, Walsh P, O'Gorman P, Boran G, McLoughlin R, Qasim A, Breslin N, Ryan B, O'Connor H, O'Morain C, A comparative study of faecal occult blood kits in a colorectal cancer screening program in a cohort of healthy construction workers., Irish journal of medical science, 180, (1), 2011, p103-8Journal Article, 2011, DOI
O'Donnell S, Murphy S, Anwar MM, O'Sullivan M, Breslin N, O'Connor HJ, Ryan BM, O'Morain CA, Safety of infliximab in 10 years of clinical practice., Eur J Gastroenterol Hepatol, 23, (7), 2011, p603 - 606Journal Article, 2011, DOI
Qasim A, Ullah N, Crotty P, Swan N, Breslin N, Ryan B, Torreggiani W, Eguare E, Neary P, O'Connor H, O'Morain C, A changing trend in the management of patients with newly diagnosed Crohn's disease, Ir J Med Sci. , 180, (3), 2011, p643 - 647Journal Article, 2011
O'Connor A, Taneike I, Nami A, Fitzgerald N, Ryan B, Breslin N, O'Connor H, McNamara D, Murphy P, O'Morain C, Helicobacter pylori resistance rates for levofloxacin, tetracycline and rifabutin among Irish isolates at a reference centre., Irish journal of medical science, 182, (4), 2013, p693-5Journal Article, 2013

I have been involved in basic and translational research for all of my professional career and there are a number of strands to my research and these can be consolidated into four main areas. 1. Inflammatory Bowel Disease 2. Pancreatic Disease and Interventional Pancreatobiliary Endoscopy. 3. Biomarkers in GI disease 4. Coeliac disease. I also have a major clinical interest in functional digestive conditions including IBS, Functional Dyspepsia and Functional Biliary Sphincter Disorder (formerly Sphincter of Oddi Dysfunction). A

Gastroenterology & Hepatology, Genetics and Genomics, Medical Engineering, Biotechnology and devices (including medical laboratory technologies and informatics), Oncology and cancer biology, Immunity and Infection (including Rheumatology & Inflammatory disease), Health Care & Health Services (including Health Technology and Health Information Systems),

Recognition

Irish Society of Gastroenterology Prize for best Oral Presentation 2000
Best Poster Prize EAGE European Bridging Meeting November 2007
Astra Zeneca Research Grant 2007
Irish HRB Project Grant (On Helicobacter pylori) 2000
Royal Academy of Medicine in Ireland Registrar's Prize 2000
PPP Healthcare Medical Trust Project grant 1998
The Walter G. Smith Prize in Pharmacology, TCD 1991
Irish HRB Project Grant (On oesophageal cancer) 2000
IOIBD project grant (International organisation for the study of IBD 2008
Best Poster Prize EAGE Bridging Meeting October 2008
The G.B. Hutchinson Bequest for highest overall results, TCD June 1993
Meath Foundation Grant 2007
Meath Hospital Prize in Clinical Medicine and Surgery. 1993
Professor's Prize in Paediatrics, TCD June 1993
Irish Society for Cancer Research, Doctor in Training Award 2000
The Upjohn Prize in Pharmacology, TCD 1991
Irish HRB Research Fellowship (2 year) 1998
The Arthur Ball Prize for highest mark in Surgery, TCD June 1993
Irish Society of Gastroenterology Prize for best Oral Presentation 1999
Trinity College Scholarship in Medicine 1990 1990
British and Irish Gastroenterology (BIG) Meeting Best Oral Presentation April 2017
Irish Society Of Gastroenterology Best Poster Prize 2018
The Henry Hutchinson Award , TCD 1988
The David Gault Memorial Prize , Rotunda Hospital June 1993
'Rising Star' in Gastroenterology for Ireland at the United European Gastroenterology Week 2003
Trinity College Postgraduate Travelling Scholarship in Medicine 2001
Adelaide Hospital Prize. 1993
Professor's Prize in Surgery, TCD June 1993
The Upjohn Essay Prize in Pharmacology 1991
British and Irish Gastroenterology (BIG) Meeting Best Poster Presentation April 2017
ASNEMGE National Scholar Award (Poster Prize UEGW) October 2010
The Fitzpatrick Scholarship for first place in class TCD June 1993
Professor's Prize in Obstetrics and Gynaecology, TCD June 1993
The Reuben-Harvey Prize, TCD June 1993

Uk and Ireland EUS Society (UKIEUS) present
ECCO (European Crohn's and Colitis Organisation) present
The American Gastroenterology Association current day
Fellow of the Royal College of Physicians in Ireland present
The Irish Society of Gastroenterology current day
The European Society for Gastrointestinal Endoscopy (ESGE) current day

Irish Society of Gastroenterology Honorary Treasurer 2012-2015
European Society of Gastrointestinal Endoscopy; Irish Representative 2016-present
Member of Gastroenterology advisory panel for the Irish National Cancer Control Programme (NCCP). 2016-2019
National Specialty Director for Higher Specialist Training in Gastroenterology in Ireland 2012-2015
National Endoscopy Training Committee, board member 2018- present
NIHR (National Institute for Health Research) in the UK External reviewer
Irish Society of Gastroenterology - Member of Board and Scientific Organising Committee 2005-2017