1st Clinic of Gastroenterology


  • 2000-        Head, Gastroenterology Clinic, ‘Henry Dunant’ Hospital Center.
  • 1992-1999 Head of Gastroenterology Unit, 401 Army General Hospital, Athens, Greece.
  • 1990-1991 Senior Registrar, Gastroenterology Unit, 401 Army General Hospital, Athens, Greece.
  • 1984-1989 Registrar, Senior Registrar and Research fellow, Gastroenterology Units, United Medical School of Guy's, St. Thomas’ and King’s College, Hospitals, London, United Kingdom.
  • 1982-1983 Registrar, Internal Medicine, Evangelismos Hospital, Athens, Greece.
  • 1981-1982 Registrar, Internal Medicine, 401 Military General Hospital, Athens, Greece.
  • 1979-1980 Head of Medical Service, 3rd Battalion, Greek Army Special Forces.
  • 1977-1978 Registrar, General Medicine, 401(Athens) and 404 (Larisa) Army General Hospitals, Greece.


Fields of current clinical and research interest:

Large bowel polyps and cancer, Helicobacter pylori infection in benign and malignant disease, oesophageal disease, inflammatory bowel disease, meta-analyses, GI endoscopy.


Participation with research contributions in over 250 international and national congresses. Invited speaker to at least 50 international meetings (Athens, Nicosia, Tel Aviv, Amman, London, Madrid, Lisbon, Porto, Berlin, Vienna, Dublin, Paris, Stockholm, Helsinki, Barcelona, Copenhagen, Oslo, Rome, Istanbul, Izmir, Antalya, Moscow, Chicago, Phoenix, San Diego, Los Angeles, New York, Orlando, Bari, Beijing, Maastricht, Florence, Venice, Bucharest, Cluj Napoca, Bangkok, etc).


Organizer of International and National Congresses:

  • Organizer of the XVIIIth International Workshop on Gastroduodenal Pathology and Gastric Cancer, Nicosia, Cyprus. 2015
  • Organizer of the annual Congress of Professional Hellenic Society of Gastroenterology, Volos, Greece. 2014
  • Organizer of the annual Congress of Hellenic Society for Inflammatory Bowel Disease, Volos, Greece. 2013
  • Organizer of the 24th Hellenic Congress of Gastroenterogy, Athens,Greece. 2004
  • Organizer of the annual workshop on Gastroduodenal Pathology and Helicobacter pylori of the Hellenic  Society for study of Helicobacter pylori, Eretria, Greece. 2002
  • Organizer of the XVth International Workshop on Gastroduodenal Pathology and Helicobacter pylori, Athens, Greece. 2002 


  • Specialist in Gastroenterology,1988
  • Graduation in medicine, Aristotelian University of Thessaloniki / Military Medical School (Honours),1977


  • Διδάκτωρ Ιατρικής (MD), Πανεπιστήμιο Αθηνών
  • Διδακτορικό Δίπλωμα (PhD), Ιατρική Σχολή των Νοσοκομείων Guy’s, St. Thomas’ και King’s College του Πανεπιστημίου του Λονδίνου, Ηνωμένο Βασίλειο
  • Ε.Καθηγητής Παθολογίας και Γαστρεντερολογίας, Ιατρική Σχολή, Πανεπιστήμιο Θεσσαλίας, Λάρισα,.

Recognitions & Awards

Academic titles:

  • Doctor of Medicine (MD), University of Athens Medical School (Honours).
  • Doctor of Philosophy (PhD), United Medical Schools of Guy's, St. Thomas’ and King’s College Hospitals, University of London, United Kingdom. (Honours).
  • As. Professor of Internal Medicine and Gastroenterology, Medical School, University of Thessaly, Larisa, Greece.
  • As. Professor of Gastroenterology, Medical School, European University of Cyprus.

Member of scientific societies:

  • New York Academy of Sciences
  • British Society of Gastroenterology (BSG)
  • Fellow of American Gastroenterological Association (AGA)
  • Fellow of American College of Gastroenterology (ACG)
  • Fellow of European Board of Gastroenterology and Hepatology (EBGH)
  • Member and president (2002, 2015) of European Helicobacter pylori and microbiota study group (EHSMG)
  • American Society of Gastrointestinal Endoscopy
  • European Inflammatory Bowel Disease society (ECCO)
  • Hellenic Society of Gastroenterology (president 2008)
  • Founding member of Hellenic Society for study of Helicobacter pylori infection (EEMEP, president 2002).
  • Hellenic society of Hepatology
  • Hellenic society of Inflammatory Bowel Disease (EOMIFNE)

Selected Honours and Awards:

  • 1985 European Society of Clinical Investigation, Research Award.
  • 1986 European Society of Gastroenterology and Endoscopy, Research award. 
  • 1987 British Society of Gastroenterology (BSG), Research Award.
  • 1988 British Society of Gastroenterology (BSG), Research Award. 
  • 1990 Annual Congress of the Hellenic Armed Forces Medical Corp. Research Award. 
  • 1992 1st United European Gastroenterology Week. Prize for Best Research Presentation.
  • 1993 American Gastroenterological Association (AGA), Research Award. 
  • 1994 Hellenic Society of Gastroenterology. Prize for Best Researcher of the Year.
  • 1996 Hellenic Society for study of Helicobacter pylori, Prize for best research paper.
  • 1998 Hellenic Society of Gastroenterology, Research Award.
  • 1999 Hellenic Society for study of Helicobacter pylori, Research Award.
  • 2000 American Gastroenterological Association (AGA), Research Award.
  • 2002 United European Gastroenterology, Research Award. 
  • 2003 “Man of the Year” by the American Biographical Institute as recognition based “on his outstanding accomplishments and the noble example he has set for his peers and entire community”. 
  • 2004 Hellenic Society for study of Helicobacter pylori, Research Award.
  • 2007 “Man of Science” by the American Biographical Institute as recognition of Outstanding Scientific Contribution to Medical Research.
  • 2008 United European Gastroenterology, Research Award.


Editorial Activities and Publications:

  • 1992-1999 Editor, Hellenic Armed Forces Medical Review.
  • 1992-2002 Associate Editor, Hellenic journal of Gastroenterology.
  • Two books (1993 and 1998) on the clinical significance and current molecular and clinical aspects of H. pylori infection.
  • 150 full publications in peer review international journals, 200 abstracts in congresses and 100 publications in Greek journals.
  • Quality assessment of publications (ResearchGate) 
    • Publication downloads 3.214 
    • Publication views 7.529 
    • Citations 4.961 
  • Reviewer of manuscripts for various peer review journals ( Gut, American Journal of Gastroenterology, Gastroenterology, Digestive Disease and Sciences, Annals of Gastroenterology, Gastrointestinal Endoscopy, Helicobacter, Italian Journal of Gastroenterology, Clinical and Research Gastroenterology, European Journal of Clinical Investigation, etc).

List of selected recent publications in peer review international journals:

  • Rokkas T, Gisbert J, Niv Y, O’Morain C. The association between Helicobacter pylori infection and inflammatory bowel disease based on meta-analysis. United European Gastroenterology Journal 2015; 3: 539-550.
  • Rokkas T, et al. The role of circulating microRNAs as novel biomarkers in diagnosing Colorectal Cancer. A Meta-analysis. Eur J Gastroenterol Hepatol 2015; 27: 819-825.
  • Venerito M, Nardone G, Selgrad M, Rokkas T, Malfertheiner P.Gastric cancer-epidemiologic and clinical aspects. Helicobacter 2014; 19 Suppl 1:32-7.
  • Rokkas T, et al. Population differences concerning TNF-α gene polymorphisms in gastric carcinogenesis based on meta-analysis. Ann Gastroenterol. 2014; 27(2):139-148.
  • Rokkas T, et al. The relationship of Helicobacter pylori infection and colon neoplasia, on the basis of meta-analysis. Eur J Gastroenterol Hepatol 2013; 25(11):1286-94. 
  • Gazi S, Karameris A, Christoforou M, Agnantis N, Rokkas T, Stefanou D.Real-Time PCR detection and quantitation of Helicobacter pylori clarithromycin-resistant strains in archival material and correlation with Sydney classification. Ann Gastroenterol 2013; 26(3):226-232.
  • Selgrad M, Bornschein J, Rokkas T, Malfertheiner P.Helicobacter pylori: gastric cancer and extragastric intestinal malignancies. Helicobacter 2012; 17 Suppl 1:30-5. 
  • Malfertheiner P, Megraud F, O'Morain CA, Atherton J, Axon AT, Bazzoli F, , Gisbert JP, Graham DY, Rokkas T, El-Omar EM, Kuipers EJ; European Helicobacter Study Group.Management of Helicobacter pylori infection--the Maastricht IV/ Florence Consensus Report. Gut. 2012 May; 61(5):646-64. 
  • Rokkas T, Niv Y.The role of video capsule endoscopy in the diagnosis of celiac disease: a meta-analysis.Eur J Gastroenterol Hepatol. 2012; 24(3):303-8. 
  • Rokkas T.The role of Helicobacter pylori infection in functional dyspepsia.Ann Gastroenterol. 2012; 25(2):176-177. 
  • Bornschein J, Rokkas T, Selgrad M, Malfertheiner P.Gastric cancer: clinical aspects, epidemiology and molecular background. Helicobacter 2011; 16 Suppl 1:45-52. 
  • Rokkas T, et al. Helicobacter pylori infection and gastric histology in first-degree relatives of gastric cancer patients: a meta-analysis.Eur J Gastroenterol Hepatol 2010; 22(9):1128-33. 
  • Rokkas T, et al. A meta-analysis evaluating the accuracy of colon capsule endoscopy in detecting colon polyps.Gastrointest Endosc 2010; 71(4):792-8. 

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