Assoc. Prof. MD. Genco Gençdal
Medical Specialist
Areas Of Interests
Gastroesophageal Reflux
Achalasia (Difficulty Swallowing)
Gastritis
Dyspepsia
Stomach/Duodenal Ulcer
Irritable Bowel Syndrome
Pancreatic Diseases (Acute and Chronic)
Inflammatory Bowel Diseases (Crohn's Disease
Ulcerative Colitis)
Fatty Liver Disease
Acute/Chronic Liver Diseases
Liver Cirrhosis
Liver Transplantation
Bile Duct Stone (Choledocholithiasis)
Viral Hepatitis (Hepatitis A
B
C
D
E)
Nutrition
ERCP (Endoscopic Retrograde Cholangiopancreatography)
EMR (Endoscopic Mucosal Resection)
Endoscopic Reflux Treatments (Stretta
GERDx
EsophyX)
Obesity Follow-up and Treatment
Cholangioscopy (Spy-Glass)
PH meter/High Resolution Manometer (HRM)
PEG/PEG-J/Nazojejunal
Liver Elastography (Fibroscan)
Gastroscopy
Endoscopic Esophagus/Duodenum/Colon Metallic Stent
Endoscopic Band Ligation
Endoscopic Polypectomy
Colonoscopy
Capsule Endoscopy
Double Balloon Enteroscopy
Experience:
- April 2026 - Present | Associate Professor, Istinye University Liv Topkapı Hospital, Internal Medicine Clinic (Gastroenterology)
- October 2020 - March 2026 | Associate Professor, Koç University Faculty of Medicine, Internal Medicine Department (Gastroenterology)
- 2018 - 2020 | Associate Professor, Ataşehir Private Memorial Hospital / Üsküdar University Faculty of Medicine (Gastroenterology)
- 2016 - 2018 | Assistant Professor, Istanbul Yeni Yüzyıl University Faculty of Medicine, Internal Medicine Department (Gastroenterology)
- 2015 - 2016 | Specialist Doctor, SB Bakırköy Dr. Sadi Konuk Training and Research Hospital, Department of Internal Medicine (Gastroenterology)
- 2013 - 2015 | Specialist Doctor, SB Aydın State Hospital, Internal Medicine Clinic (Gastroenterology)
Scientific Publications (SCI/SCI-E):
- 1.Bengi, G.; Dolu, S.; Özden, Y.; Oruç, N.; Tozlu, M.; Hakim, G.D.; Gençdal, G.; Çalışkan, A.R.; Ustaoğlu, M.; Kutluana, U.; et al. Prevalence and Clinical Associations of Malnutrition and Sarcopenia Risk in Gastroenterology Inpatients: A Multicenter Cross-SectionalStudyinTurkey. Diagnostics 2025, 15,2935. https://doi.org/10.3390/diagnostics15222935
- 2.Eren, F., Goktug, M. R., Ari, D., Ozkumur, G. F., Bulbuller, E. N., Gencdal, G., … Kiyici, M. (2026). Fibrosis-4 Score and Postoperative Outcomes in Metabolic Dysfunction-Associated Steatotic Liver Disease. Turkish Journal of Gastroenterology, 37(1), 127–135. https://doi.org/10.5152/tjg.2026.25693
- 3. Turan İ., Akarca U.S., Aladag M. et al. Pre-transplant predictors of 3-Month survival following liver transplantation for acute liver failure in adult and pediatric patients in Türkiye. Sci Rep 15, 26221 (2025).
- 4.Parlar, Y.E., Gulnar, M.O., Kırmızıgul, B., Gencdal, G., Zeybel, M., Keskin, O. and Yurdaydın, C. (2025), The Course of COVID-19 Infection in Patients With Chronic Hepatitis Delta. J Viral Hepat, 32: e14054.
- 5.Uçbilek E, Yildirim AE, Ellik Z, et al. Changing trends in the etiology of cirrhosis in Türkiye: A multicenter nationwide study. Turk J Gastroenterol. 2024;35(10):772-777.
- 6.Toy M, Guler B, Somay K, Gencdal G, Yurdaydin C. Hepatitis delta virus infection in Turkey: A meta-analysis of prevalence.IJID Reg. 2024 Feb 22;10:228-234. doi: 10.1016/j.ijregi.2024.02.003. eCollection 2024 Mar.
- 7.Akarsu M, Dolu S, Harputluoglu M, Yilmaz S, Akyildiz M, Gencdal G, Polat KY, Dincer D, Adanir H, Turan I, Gunsar F, Karasu Z, Gokcan H, Karademir S, Kabacam G, Kayhan MA, Kiyici M, Gulsen MT, Balaban Y, Dogrul AB, Senkaya A, Ellik ZM, Eren F, Idilman R. Changing trends in the etiology of liver transplantation in Turkiye: A multicenter study.
- Hepatol Forum. 2024 Jan 16;5(1):3-6. doi: 10.14744/hf.2023.2023.0010. eCollection 2024.
- 8.Kalkan C, Yilmaz Y, Erdogan Doganay B, Savas B, Yurdcu E, Caliskan A, Keskin O, Gencdal G, Zeybel M, Toruner M, Bozdayi A.M, Idilman R, Yurdaydin C. Non-invasive fibrosis markers for assessment of liver fibrosis in chronic hepatitis delta. J Viral Hepat. 2023 Jan 18. doi: 10.1111/jvh.13806.
- 9.Emre MC, Gençdal G, Akyıldız M, Günşar F, Nart D, Yılmaz F, Karasu Z, Ersöz G, Salih Akarca U. A single-center experience: Liver biopsy results during a year.Hepatol Forum. 2022; Apr 26;3(2):41-44. doi: 10.14744/hf.2021.2021.0045.
- 10.Özbaş B, Keskin O, Hecker H, Karahan I, Özbaş C, Kalkan Ç, Kartal A, Önder FO, Öncü BK, Gençdal G, Akyıldız M, Günşar F, İdilman R, Weissenborn K, Özütemiz Ö, Yurdaydın C.Determination of Turkish norms of psychometric tests for diagnosing minimal hepatic encephalopathy and proposal of a high sensitive screening test battery. Hepatol Int. 2021; Dec15(6):1442-1455. doi: 10.1007/s12072-021-10207-5.
- 11.Akarsu M, Onem S, Turan I, Adalı G, Akdoğan M, Akyıldız M, Aladağ M, Balaban Y, Danış N, Dayangaç M, Gençdal G, Gökcan H, Sertesen E, Gürakar M, Harputluoğlu M, Kabaçam G, Karademir S, Kıyıcı M, İdilman R, Karasu Z. Recommendations for Hepatitis B Immunoglobulin and Antiviral Prophylaxis Against Hepatitis B Recurrence After Liver Transplantation.Turk J Gastroenterol. 2021; Sep;32(9):712-719. doi: 10.5152/tjg.2021.21608.
- 12.Gençdal G, Zeybel M, Yurdaydın C. Editorial: Natural history of hepatitis delta virus-induced liver disease - less severe today but still needs attention.Aliment Pharmacol Ther. 2021; Aug;54(4):519-520. doi: 10.1111/apt.16527.
- 13.Gençdal G, Yurdaydın C. Developing New Therapies for Delta Hepatitis: The Race Is On.Hepatol Commun.2021;Apr 9;5(4):556-558. doi: 10.1002/hep4.1685.
- 14.Abaylı B, Abaylı C, Gençdal G.Histopathological evaluation of long-term tenofovir disoproxil fumarate treatment in patients with hepatitis be antigen-negative chronic hepatitis B. World J Gastrointest Pharmacol Ther. 2021; Mar 18;12(2):32-39. doi: 10.4292/wjgpt.v12.i2.32.
- 15.Gençdal G, Türker G, Yazıcı Gençdal I, Ekinci B, Acar Ş, Dinçkan A, Akyıldız M.Assessment of sleep pattern and quality before and after liver transplantation using different methods.Turk J Gastroenterol. 2020; Aug;31(8):581-587.doi: 10.5152/tjg.2020.18809.
- 16.Akyıldız M, Güngor G, Güler N, Acar S, Erdoğan Y, Gençdal G, Dayangaç M, Tokat Y.Adult living donor liver transplantation from donors with Gilbert's syndrome: Is it safe? Clin Transplant. 2020; Sep;34(9):e14015. doi: 10.1111/ctr.14015.
- 17.Polat KY, Acar S, Gençdal G, Yazar S, Kargı A, Dönmez R, Aslan S, Kavlak ME, Arıkan C, Akyıldız M . Hepatocellular Carcinoma and Liver Transplantation: A Single-Center Experience.Transplant Proc. 2020; Jan-Feb;52(1):259-264. doi: 10.1016/j.transproceed.2019.10.029.
- 18.Abaylı B,Gençdal G. (2019). A Single-Center Experience: The Diagnostic Role Of Peritoneoscopy in Patients With Exudative Ascites. Journal Of Laparoendoscopic Advanced Surgical Techniques. 2019; 29(1), 51-54., doi: 10.1089/Lap.2018.0274.
- 19.Abaylı B,Gençdal G,Degirmencioğlu S. (2018). Correlation Between Neutrophil/Lymphocyte Ratio and Ranson Score in Acute Pancreatitis. Journal Of Clinical Laboratory Analysis. 2018; 32(6), 22437, doi: 10.1002/Jcla.22437.
- 20.Gençdal G.,Günşar F.,Meral CE.,Gürsel B.,Oruç N.,Karasu AZ.,Ersöz G.,Akarca US.(2014). Diurnal Changes of Critical Flicker Frequency in Patients With Liver Cirrhosis and Their Relationship With Sleep Disturbances. Digestive and Liver Disease. 2014;46(12), 1111-1115. doi: 10.1016/J.Dld.2014.08.031.
- 21.Gençdal G, Günşar F, Meral CE, Salman E, Gürsel B, Oruç N, Karasu Z, Ersöz G, Akarca US.Sleep disorders in cirrhotics; how can we detect? Liver Int. 2014; Sep;34(8):1192-7. doi: 10.1111/liv.12485.
Case Reports (SCI/SCI-E):
- 1. Tan T, Gencdal G, Ure UB, Akay MO. Case report: Rechallenge with gilteritinib after acute pancreatitis in FLT3-positive AML Leukemia Research Reports, 2025-01-01, Volume 23, Article 100503,
- 2.Gencdal G, Akyildiz M. Endoscopic ultrasound-guided gallbladder drainage in an elderly patient. Diagn Interv Endosc. 2024;3(3):50.
- 3.Gencdal G, Degirmencioglu S, Akyildiz M. Diffuse Esophageal Squamous Papillomatosis Covering the Entire Esophagus. Clinical Gastroenterology And Hepatology.2018; 16(6), 28-28. doi: 10.1016/J.Cgh.2017.09.020.
- 4.Acar S, Gencdal G,Tokac M, Eryigit E, Alkara U,Tellioglu G,Dinckan A, Akyildiz M. Liver Transplantation for Polycystic Liver Disease Due to Huge Liver With Related Complications: A Case Report. Transplantation Proceedings.2017; 49(3), 603-605. doi: 10.1016/J.Transproceed.2017.01.033.
Scientific Publications (National/Non-SCI SCIE):
- 1.Abaylı B, Abaylı C, Gençdal G. Retrospective evaluation of liver transaminase abnormalities in asymptomatic and symptomatic patients according to liver biopsy results. J Contemp Med. 2022; 12(6): 891-894.
- 2.Gök M,Gençdal G. The assessment of patients with non-erosive gastroesophageal reflux disease by using the Bravo® pH monitoring system. Sanamed. 2022; vol. 17, iss. 2, pp. 99-103.
- 3. Abaylı B,Gençdal G. Post-endoskopik retrograd kolanjiyopankreatografi pankreatiti için olası risk faktörlerinin ve prognostik belirteçlerin araştırılması. Endoscopy Gastrointestinal.2020; 28(3): 77-81.
- 4.Gök M, Gençdal G. Long-term results of the stretta procedure in patients with gastroesophageal reflux: A single-center experience. Endoscopy Gastrointestinal 2020;28:1-4.
- 5.Gençdal G., Alkara U., Akyıldız M. Comparing computerized tomography indices and liver biopsy in liver transplantation donors for hepatosteatosis. J Clin Med Kaz 2020; 5(59):42-45. doi: https://doi.org/10.23950/1812-2892-JCMK-00801.
- 6.Abaylı B, Gençdal G. Red cell distribution width and platelet indices as predictors in determining the prognosis of upper gastrointestinal system bleeding.Sanamed. 2019; 14(2): 169–174. doi: 10.24125/Sanamed.v14i2.331.
- 7.Gençdal G. Demir Eksikligi Anemisi Olan Hastalarda Üst Ve Alt Gastrointestinal
- Sistem Endoskopisi Sonuçlarımız. Gazi Medical Journal. 2019; 30(1), 32-34. doi: 10.12996/Gmj.2019.08.
- 8.Gençdal G. Tek Merkez Deneyimi: Karaciğer Biyopsi Endikasyonları ve Sonuçları. Anatolian Clinic The Journal Of Medical Sciences. 2019; 24(1), 42-46. doi: 10.21673/Anadoluklin. 457185.
- 9.Gençdal G, Meral CE, Azarsız E, Aksu G, Günşar F,Akarca US.Primer Biliyer Kolanjit Ve Otoimmün Karaciğer Hastalıklarında Çölyak Hastalığı Prevalansı. Journal of Contemporary Medicine. 2018; 8(4), 295-298. doi: 10.16899/Gopctd.468748.
- 10.Gençdal G,Salman E,Akarca US,Özütemiz AO. (2017).Association Of Lct-13910 C/T Polymorphism And Colorectal Cancer. Annals Of Coloproctology,33(5), 169-172. doi: 10.3393/Ac.2017.33.5.169.
- 11.Yenice N,Gençdal G,Aksoy N,Kalyon S,Olgun A. Üst Gastrointestinal Sistem Endoskopisi Yapılmış Hastalarda Hepatit B Ve Hepatit C Sıklığı. Akademik Gastroenteroloji Dergisi. 2009; 8(2), 82-87.
Books and Publications Outside of Index Medicus:
- 1. Gencdal G., Yildiz H. Kompanse İleri Kronik Karaciğer Hastalığı. Gastroenteroloji Textbook - Cilt (1-2). S;1445-1458;2025
- 2. Bayram B, Tekin Cetin B, Gencdal G. Otoimmün hepatit varyantlarında yaklasım ve tedavi. Günsar F, editor. Otoimmün Karaciğer Hastalıkları. 1. Baskı. Ankara: Türkiye Klinikleri; 2025. p.89-93.
- 3.Akyildiz M, Gencdal G, Demir K. Wilson hastalığı: Karaciğer nakli. Ozer FF, Editor. Wilson Hastalığı. 1. Baskı. Ankara: Türkiye Klinikleri; 2022. p.69-72.
- 4.Gencdal G, Akyildiz M, Demir K. Wilson hastalığı: Karaciğer tutulumu. Ozer FF, Editor. Wilson Hastalığı. 1. Baskı. Ankara: Türkiye Klinikleri; 2022. p.18-23.
- 5.Gencdal G, Yurdaydin C. (2021). Epidemiology of Hepatitis B Virus in the Middle East. In: Carr, B.I. (eds) Liver Cancer in the Middle East. Springer, Cham. https://doi.org/10.1007/978-3-030-78737-0_5.
- 6.Gencdal G, Alper E, Akyildiz M. Gastroenteropankreatik nöroendokrin tümörlerde endoskopik tanı ve tedavi: Gastroenterolojinin yeri. Ergüney S, Editor. Gastrointestinal Nöroendokrin Tümörler. 1. Baskı. Ankara: Türkiye Klinikleri; 2020. p.22-7.
- 7.Gencdal G,Acar Ş,Akyildiz A. Kemik İliği Nakli Alıcılarında Gastrointestinal Komplikasyonlar. Turkiye Klinikleri J Hematol-Special Topics. 2017;10(4):246-57
Courses and Certificates:
- March 31, 2007 | Ministry of Health Research Protocol Preparation Course: How to Prepare a Research Protocol? Scope: Theoretical training with expert instructors and interactive work through article examples. (1 Day)
- June 2, 2011 | Turkish Liver Research Association (TKAD) Diagnosis and Treatment Course in Acute Onset Liver Diseases Scope: Case-based interactive training prepared by expert instructors. (1 Day)
- November 21, 2011 | European Association for Study of the Liver (EASL) Facing Challenges in Gastrointestinal System Diseases and Liver Diseases (Postgraduate Course) Scope: Case-based interactive training with expert instructors. (1 Day)
- December 3, 2011 | Ministry of Health Clinical Researcher Training Program Scope: Theoretical training and interactive application through article examples. (1 Day)
March 4-5, 2022 | Turkish Gastroenterology Association (TGD) Advanced Endoscopy Course (ESD, EMR, POEM) Scope: Theoretical training and practical training on a pig model. (2 Days) - 25 - 27.04.2024 | Koç Health Education Research Academy (KAMER) HE101 Healthcare Educator Training Program (Stage 1) Scope: Trainer Training Program.
- 25 - 27.05.2024 | Turkish Gastroenterology Association (TGD) Endoscopic Ultrasonography (EUS) Training Course Scope: Theoretical training and practical training on patients. (3 Days)
- 06 - 07.02.2025 | Koç Health Education Research Academy (KAMER) HE101 Healthcare Educator Training Program (Stage 2) Scope: Trainer Training Program.
- 24 - 25.10.2025 | Turkish Gastroenterology Association (TGD) Animal Model EUS Training Course
