Besim Fazil Agargun

Gastroenterology · Hepatology

Besim Fazil Agargun

Gastroenterology Fellow
Istanbul University, Istanbul Faculty of Medicine

My clinical and academic work focuses on inflammatory bowel disease (IBD), metabolic dysfunction-associated steatotic liver disease (MASLD), advanced endoscopy, and artificial intelligence applications in gastroenterology.

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Research Interests

  • Inflammatory bowel disease (IBD)
  • Advanced endoscopy
  • Noninvasive assessment of liver disease
  • Natural language processing & AI in endoscopy
  • AI-assisted clinical decision support
  • Clinical trial methodology

Research Projects

  1. ELASTIBD: Liver Fibrosis and Steatosis in IBD

    ActivePublished paper

  2. NLP for Colonoscopy Quality

    ActiveTalks

  3. NLP in Ulcerative Colitis

    Active

  4. National IBD Epidemiology in Türkiye (TÜSEB)

    Active

  5. AI in Crohn's Disease Imaging

    Planning

  6. Large Language Models for IBD Phenotyping

    Active

Education

  1. PhD, Clinical Trials

    2026 - present

    Istanbul University, Institute of Health Sciences

  2. Fellowship, Gastroenterology & Hepatology

    2024 - present

    Istanbul University, Istanbul Faculty of Medicine

  3. Residency, Internal Medicine

    2018 - 2022

    Istanbul University, Istanbul Faculty of Medicine

  4. MD

    2012 - 2018

    Istanbul University, Istanbul Faculty of Medicine

Academic Service & Memberships

Peer reviewer
American Journal of Gastroenterology
Inflammatory Bowel Diseases
Journal of Clinical Gastroenterology
Memberships
European Society of Gastrointestinal Endoscopy (ESGE)
American Society for Gastrointestinal Endoscopy (ASGE)
European Crohn's and Colitis Organisation (ECCO)
Crohn's & Colitis Foundation
Turkish Inflammatory Bowel Disease Association (IBHD)
Turkish Association for the Study of the Liver (TKAD)
Faculty roles
Young Co-Chair, UEG Week 2026: moderated poster session “Therapeutics in IBD: Real-world experience (I)”

Selected Publications

  1. Liver Fibrosis and Steatosis in Inflammatory Bowel Disease: A Cross-Sectional Matched-Control Transient Elastography Study (ELASTIBD)

    Besim Fazil Agargun, Ibrahim Volkan Senkal, Aynura Rustamzada, et al.

    Hepatology Research, 2026

    PubMedCiteDOI

  2. Trends in Inflammatory Bowel Diseases Across a Eurasian Crossroad: A Decade of Multicenter Data

    Filiz Akyüz, Besim Fazil Agargun, Özlen Atuğ, et al.

    Journal of Clinical Gastroenterology, 2025

    PubMedCiteDOI

  3. Transient elastography measurements of the liver and transplanted kidney in patients with AA amyloidosis: a cross-sectional comparative study

    Murat Bektaş, Bilger Çavuş, Besim Fazil Agargun, et al.

    Rheumatology International, 2025

    PubMedCiteDOI

  4. Characteristics and course of patients with AA amyloidosis: single centre experience with 174 patients from Turkey

    Murat Bektas, Nevzat Koca, Emin Oguz, …, Besim Fazil Agargun, et al.

    Rheumatology (Oxford), 2024

    PubMedCiteDOI

  5. Criteria for Hyperinflammation Developing in COVID-19: Analysis of 2 Cohorts From Different Periods of the Pandemic

    Shirkhan Amikishiyev, M Guven Gunver, Murat Bektas, …, Besim Fazil Agargun, et al.

    Arthritis & Rheumatology, 2023

    PubMedCiteDOI

All publications

Talks & Presentations

  1. UEG Week 2026: Young Co-Chair and three abstract presentations

    UEG Week 2026 · Barcelona, Spain

    Young Co-Chair of the moderated poster session “Therapeutics in IBD: Real-world experience (I)”, plus three accepted abstracts on NLP/LLM-based Montreal classification, transient elastography in heart failure, and a clinical case of clear cell sarcoma of the gastrointestinal tract.

  2. NLP-based classification of bowel preparation quality in colonoscopy reports

    Digestive Disease Week (DDW) 2026 · Chicago, IL, United States

    Poster Mo2176: automated bowel-preparation quality classification over 11,374 colonoscopy reports (TF-IDF + logistic regression, ~92% accuracy), selected for the AGA Innovation Themed Walking Tour.

  3. NLP-based classification of bowel preparation quality and its association with adenoma detection rate

    UEG Week 2025 · Berlin, Germany

    Late-breaking oral presentation: NLP classification of bowel-preparation quality (TF-IDF + logistic regression, 92% CV accuracy, 11,374 reports) and its association with adenoma detection rate (n = 5,420; ADR 20.4%).

All talks

Awards

  1. 2025

    Best Poster Presentation Award

    Turkish Society of Gastroenterology (TGD)

    Assessment of liver stiffness by transient elastography in heart failure: a cross-sectional study linking hepatic congestion with echocardiographic findings

  2. 2023

    Best Thesis Award

    Istanbul University, Istanbul Faculty of Medicine

    Evaluation of hepatobiliary pathologies using non-invasive methods (radiological, FibroScan and biochemical) in patients with inflammatory bowel disease

Contact

Open to collaboration on datasets, multicentre studies, AI/NLP validation and clinical research. Get in touch by e-mail.

Clinic

Division of Gastroenterology & Hepatology
Department of Internal Medicine
Istanbul University, Istanbul Faculty of Medicine
Çapa, Fatih, Istanbul, Türkiye
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E-mail

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