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Education and Specialization

• 2006: Kocaeli University Faculty of Medicine
• 2014: Akdeniz University Faculty of Medicine, Internal Medicine
• 2018: Akdeniz University Faculty of Medicine, Medical Oncology

Experience

• 2006 - 2008: Konya Derebucak District Hospital
• 2009 - 2015: Akdeniz University Hospital
• 2015: Antalya Kaş State Hospital
• 2015 - 2016: İnönü University Faculty of Medicine
• 2016 - 2021: Akdeniz University Hospital
• 2021 - 2023: Antalya Training and Research Hospital

Assoc. Prof. Atakan Topçu, M.D., is a medical oncologist at Medipol University and Medipol Acıbadem Regional Hospital. He treats solid tumors, including lung, breast, colorectal, gastric, and neuroendocrine cancers. His work also covers targeted therapies, immunotherapy, geriatric oncology, and cancer-related malnutrition, cachexia, and sarcopenia.

He has authored more than 50 peer-reviewed papers. Recent work includes a 2024 Frontiers in Medicine study on geriatric syndromes and a 2023 Future Oncology paper on sarcopenia and anxiety in lung cancer. He has also published on the CONUT score in breast cancer and on malnutrition in HER2-negative metastatic gastric cancer.

Dr. Topçu serves on the Editorial Board of BMC Cancer. He is a member of the Turkish Society of Medical Oncology, ESMO, and the Turkish Geriatrics Society. Education and training: M.D., Uludağ University; residency in Internal Medicine, Marmara University; fellowship in Medical Oncology, Bezmialem Vakıf University.

Pediatrician, Pediatric Gastroenterology and Nutrition Specialist

Education

Yeditepe University School of Medicine

Professor of Pediatrics (Chair of the Department)

2004 - 2007

Dokuz Eylül University School of Medicine

Pediatric Gastroenterology Sub-specialty

1995 – 1998

Hacettepe University School of Medicine

Pediatrics Instructor

1985 - 1987

Professional Experience

Ataşehir Florence Nightingale Hospital

Pediatrician, Pediatric Gastroenterology

2017 – Present

Kadıköy Şifa Ataşehir Hospital

Pediatric Gastroenterology and Nutrition

2013 – 2017 

Dokuz Eylül University School of Medicine

Professor of Pediatrics

1994 – 2004

Publications

Cevik N, Buyukgebiz B. Interaction between human blood group (ABO) substances and enteropathogenic

bacterial agents. Turk J Pediatr. 1987. Link

Buyukgebiz B, Ozalp I, Oran O. Investigation of serum vitamin A levels of children who had a history of

recurrent diarrhoea. J Trop Pediatrics. 1990. Link

Languages

Turkish: Native

English: Advanced

Dr. Irfan Cicin is a Professor of Medical Oncology at the Trakya University Faculty of Medicine (2015–present). He has over 20 years of medical oncology experience and has held academic roles since 2010.

Education: MD, Istanbul University – Cerrahpaşa (1991–1997). Residency in Internal Medicine, Trakya University (1997–2002). Fellowship in Medical Oncology, Trakya University (2002–2004).

Practice: Medical Oncologist, Trakya University (2005–2008). Medical Oncologist, Elazığ Training and Research Hospital (2008–2010). Associate Professor of Medical Oncology, Trakya University (2010–2015). He previously served as a physician in the Turkish Air Force at Etimesgut Military Hospital (2004–2005).

Education

2005 – M.D., Istanbul University, Istanbul Faculty of Medicine

2010 – Internal Medicine Specialization, Haseki Training and Research Hospital

2021 – Gastroenterology Subspecialty Training, Sakarya University Faculty of Medicine

Academic & Professional Experience

Assistant Professor, Istanbul Florence Nightingale Hospital

Assistant Professor, Istanbul Bilim University Faculty of Medicine

Assistant Professor, Istanbul Yeni Yüzyıl University Faculty of Medicine

Head of Department, Giresun University Faculty of Medicine

Scientific Publications

Dr. Acar has authored over 20 international peer-reviewed articles in the fields of internal medicine and gastroenterology. Her notable contributions include studies and case reports on:

Gastrointestinal bleeding management in anticoagulant users

Rare GI cases such as bezoars, aortoesophageal fistulas, and massive hemorrhagic ascites

Liver transplantation complications, including graft-versus-host disease

The role of (pro)hepcidin in IBD-related anemia

Endoscopic interventions for acute GI bleeding

Covid-19 treatment agents and their GI implications in Turkey

(Full publication list available upon request)

Clinical Expertise

Gastrointestinal bleeding & endoscopic procedures

Hepatology & liver disease management

Inflammatory bowel diseases (IBD)

Complex GI case diagnostics

Post-transplant GI complications

Diabetic GI and cardiovascular comorbidities

PROFESSIONAL EXPERIENCE

2011-2012
Erzurum Koprukoyu State Hospital
Department: General Medicine

2012-2017
Istanbul University Cerrahpaşa Medical Faculty
Department: Internal Medicine

06/2017-10/2017
Istanbul Gaziosmanpasa Taksim Training and Research Hospital
Department: Internal Medicine

10/2017-11/2018
Istanbul University Istanbul Medical Faculty
Department: Allergy and Immunology Fellowship

2018/2022
Istanbul University Oncology Institute
Department: Medical Oncology Fellowship

2022-2023
Tekirdag City Hospital
Department: Medical Oncology Specialist

2023-present
Istanbul Medipol University Medipol Bahcelievler Private Hospital
Department: Medical Oncology Assoc. Prof.

EDUCATION

2005-2011
Medical Education
Sivas Cumhuriyet University Medical Faculty, Sivas, Turkey

2012-2017
Internal Medicine
Istanbul University Cerrahpaşa Medical Faculty, Department of Internal Medicine, Istanbul, Turkey

2017-2018
Allergy-Immunology Fellowship
Istanbul University Istanbul Medical Faculty
Department of Internal Medicine, Division of Allergy and Immunology, Istanbul, Turkey

2018-2022
Medical Oncology Fellowship
Istanbul University Oncology Institute, Department of Medical Oncology, Istanbul, Turkey

2022
ESMO Board Certification in Medical Oncology
10th September 2022 in Paris, France.

2023
Medical Oncology Assoc. Prof.
Istanbul Medipol University Department of Medical Oncology, Istanbul, Turkey

INTERNATIONAL CLINICAL TRIALS:

1. Astefania - ROCHE

• Title: A Study Evaluating the Efficacy and Safety of Adjuvant Atezolizumab or Placebo and Trastuzumab Emtansine for Participants With HER2-Positive Breast Cancer at High Risk of Recurrence Following Preoperative Therapy
• Role: Subinvestigator

2. PFİZER

• Title: A Study Of Lorlatinib Versus Crizotinib In First-Line Treatment Of Patients With ALK-Positive NSCLC
• Role: Subinvestigator

3. RECITE - AMGEN

• Title: Study of Romiplostim for Chemotherapy-induced Thrombocytopenia in Adult Subjects With Gastrointestinal, Pancreatic, or Colorectal Cancer
• Role: Subinvestigator

4. NAVIGATE - BAYER

• Title: A Study to Test the Effect of the Drug Larotrectinib in Adults and Children With NTRK-fusion Positive Solid Tumors
• Role: Subinvestigator

5. RUBY - Tesaro (PRA)

• Title: A Phase 3, Randomized, Double-blind, Multicenter Study of Dostarlimab (TSR-042) Plus Carboplatin-paclitaxel Versus Placebo Plus Carboplatin-paclitaxel in Patients With Recurrent or Primary Advanced Endometrial Cancer
• Role: Subinvestigator

6. ENGOT-ov43/GOG-3036 - MSD

• Title: Study of Chemotherapy With Pembrolizumab (MK-3475) Followed by Maintenance With Olaparib (MK-7339) for the First-Line Treatment of Women With BRCA Non-mutated Advanced Epithelial Ovarian Cancer (EOC) (MK-7339-001/KEYLYNK001/ENGOT-ov43/GOG-3036)
• Role: Subinvestigator

7. ASTRA ZENECA

• Title: To Study Clinical Effectiveness and Safety of Olaparib Monotherapy in Metastatic Breast Cancer Patients.
• Role: Subinvestigator

8. ROSY-O - ASTRA ZENECA

• Title: Roll Over StudY for Patients Who Have Completed a Previous Oncology Study With Olaparib
• Role: Subinvestigator
•  

INTERNATIONAL PUBLICATIONS

I. Published journal articles indexed by SCI, SSCI, and AHCI

Weekly Paclitaxel in Classic Kaposi Sarcoma

• Authors: Paksoy, N., Khanmammadov, N., Doğan, İ., Ferhatoğlu, F., Ahmed, M. A., Karaman, S., & Aydiner, A.
• Journal: Medicine, 102(5)

Carboplatin Desensitization in Ovarian Carcinoma

• Authors: Paksoy, N., Khanmammadov, N., Doğan, İ., Ferhatoğlu, F., Yildiz, A., Ak, N., & Aydiner, A.
• Journal: Medicine, 101(45), e31726

High-Dose Chemotherapy for Ewing’s Sarcoma

• Authors: Paksoy, N., Ferhatoglu, F., Dogan, İ., Khanmammadov, N., Celik, A. I., Gulbas, Z., & Başaran, M.
• Journal: Medicine, 101(49), e32213

Multidrug Refractory TFE3(+) Renal Cell Carcinoma

• Authors: Paksoy, Nail, et al.
• Journal: Journal of Oncology Pharmacy Practice, 2022, 28.1: 215-221

Crizotinib Efficacy in NSCLC with MET Alterations

• Authors: Gürbüz, M., Kiliçkap, S., Bilici, A., Karadurmuş, N., Sezer, A., Şendur, M. A. N., ... & Demirkazik, A.
• Journal: Medicine, 101(50), e32368

Clinicopathological Features in ALK Mutant NSCLC

• Authors: Dogan, I., Gurbuz, M., Paksoy, N., Ferhatoglu, F., Vatansever, S., Saip, P., ... & Aydiner, A.
• Journal: Medicine, 101(34)

PSMA-Based Tumor Burden in Prostate Cancer

• Authors: HAS SIMSEK, Duygu, et al.
• Journal: Annals of Nuclear Medicine, 2021, 35.6: 680-690

Atezolizumab in Metastatic Urothelial Carcinoma

• Authors: TURAL, Deniz, et al.
• Journal: European Urology Focus, 2021, 7.5: 1061-1066

Pulmonary Sarcomatoid Carcinoma

• Authors: FERHATOGLU, Ferhat, et al.
• Journal: Oncology Research and Treatment, 2021, 44.11: 590-601

Prognostic Factors in Atezolizumab-Treated Urothelial Carcinoma

• Authors: TURAL, Deniz, et al.
• Journal: International Journal of Clinical Oncology, 2021, 26.8: 1506-1513

Atezolizumab with Chemotherapy in Small Cell Lung Cancer

• Authors: GÜRBÜZ, Mustafa, et al.
• Journal: Journal of Cancer Research and Clinical Oncology, 2022, 1-9

FOLFIRINOX vs. Gemcitabine + Nab-Paclitaxel in Pancreatic Cancer

• Authors: AY, Seval, et al.
• Journal: Journal of Chemotherapy, 2022, 1-7

Trastuzumab Emtansine in Older HER2-Positive Breast Cancer Patients

• Authors: CIL, Ibrahim, et al.
• Journal: Tumori Journal, 2022, 108.1: 19-25

Real-Life Efficacy of Osimertinib in Advanced NSCLC

• Authors: HIZAL, Mutlu, et al.
• Journal: Journal of Cancer Research and Clinical Oncology, 2022, 148.6: 1501-1508

ALK-Positive Cells Percentage and Alectinib Efficacy

• Authors: Hizal, M., Bilgin, B., Paksoy, N., Atcı, M. M., Kahraman, S., Kılıçkap, S., ... & Şendur, M. A. N.
• Journal: Journal of Cancer Research and Clinical Oncology, 149(8), 4141-4148

Real-World Data on Alectinib in ALK-Positive NSCLC

• Authors: Hizal, M., Bilgin, B., Paksoy, N., Kılıçkap, S., Atcı, M. M., Kahraman, S., ... & Şendur, M. A. N.
• Journal: Future Oncology, 18(23), 2573-2582

Prognostic Factors in Metastatic RCC with T790M Mutation

• Authors: Dogan, I., Iribas, A., Paksoy, N., Vatansever, S., & Basaran, M.
• Journal: Journal of Cancer Research and Therapeutics

FLOT Regimen in Metastatic Gastric Cancer

• Authors: Tastekin, D., Paksoy, N., Dogan, I., Ferhatoglu, F., Khanmammadov, N., Bozbey, H. U., & Karabulut, S.
• Journal: Journal of Cancer Research and Therapeutics

Desensitization Protocol in Lenalidomide Hypersensitivity Reactions

• Authors: DEMIR, Semra, et al.
• Journal: Annals of Allergy, Asthma & Immunology, 2019, 123.4: 394-397

Factors Associated with Diagnostic Skin Test Positivity in PPI Hypersensitivity

• Authors: ÖZDEMIR, Seçil Kepil, et al.
• Journal: Allergy, 2019, 74.6: 1187-1190

Efficacy of Capecitabine and Temozolomide in Neuroendocrine Tumors

• Authors: Ünal, Ç., Azizy, A., Karabulut, S., Taştekin, D., Akyıldız, A., Yaşar, S., ... & Sağlam, S.
• Journal: The Oncologist, oyad257

Subsequent Treatments in Hormone-Positive Breast Cancer Progression

• Authors: Karacin, C., Oksuzoglu, B., Demirci, A., Keskinkılıç, M., Baytemür, N. K., Yılmaz, F., ... & Hacıbekiroğlu, İ.
• Journal: BMC cancer, 23(1), 192

Termination of Trastuzumab in HER2-Positive Metastatic Breast Cancer

• Authors: Dogan, I., Aydin, E., Khanmammadov, N., Paksoy, N., Saip, P., & Aydiner, A.
• Journal: Scientific Reports, 13(1), 8779

Long-term Outcomes and Predictors of Recurrence in Node-Negative Early Stage Breast Cancer

• Authors: Dogan, I., Aydin, E., Khanmammadov, N., Paksoy, N., Ferhatoğlu, F., Ak, N., ... & Aydiner, A.
• Journal: Journal of Cancer Research and Clinical Oncology, 1-9

Prognostic Factors Influencing PFS in HER2-Positive Metastatic Breast Cancer

• Authors: Doğan, İ., Paksoy, N., Ak, N., Vatansever, S., Saip, P., & Aydıner, A.
• Journal: European Journal of Breast Health, 19(2), 128

Treatment Efficacy of Ribociclib or Palbociclib plus Letrozole in Metastatic Breast Cancer

• Authors: Kahraman, S., Erul, E., Seyyar, M., Gumusay, O., Bayram, E., Demirel, B. C., ... & Nahit Sendur, M. A.
• Journal: Future Oncology, 19(10), 727-736

Efficacy and Safety of Sorafenib in Adult Metastatic Osteosarcoma Patients

• Authors: Dogan, I., Paksoy, N., & Basaran, M.
• Journal: Journal of Cancer Research and Therapeutics

Single-Agent Temozolomide as Salvage Therapy in Heavily Pretreated Metastatic Sarcoma Patients

• Authors: Dogan, I., Paksoy, N., & Basaran, M.
• Journal: Journal of Cancer Research and Therapeutics

Outcomes and Prognostic Factors in Metastatic Renal Cell Carcinoma with Brain Metastases

• Authors: Dogan, I., Iribas, A., Paksoy, N., Vatansever, S., & Basaran, M.
• Journal: Journal of Cancer Research and Therapeutics

FLOT Regimen in First-Line Treatment of Metastatic Gastric Cancer

• Authors: Tastekin, D., Paksoy, N., Dogan, I., Ferhatoglu, F., Khanmammadov, N., Bozbey, H. U., & Karabulut, S.
• Journal: Journal of Cancer Research and Therapeutics

Prognostic Factors of Perioperative FLOT Regimen in Operable Gastric Cancer

• Authors: Erol, C., Sakin, A., Basoglu, T., Ozden, E., Cabuk, D., Dogan, M., ... & Sendur, M. A. N.
• Journal: [Not specified]

Efficacy and Outcomes of Systemic Chemotherapy in Posttransplant Kaposi Sarcoma

• Authors: Khanmammadov, N., Paksoy, N., Doğan, I., Ferhatoğlu, F., Saip, P., & Aydiner, A.
• Journal: Medicine, 102(39), e35383

Comparison of Second-Line Treatments in Metastatic Renal Cell Carcinoma

• Authors: Pehlivan, M., Paksoy, N., Aydin, E., Basaran, M., & Ekenel, M.
• Journal: Medicine, 102(41), e35245

Toxicity Management and Effectiveness of Regorafenib in Advance GIST Patients: A Real-world Study - Authors: Paksoy, N., Ferhatoğlu, F., Doğan, İ., Khanmammadov, N., Bozbey, H. U., Karabulut, S., & Taştekin, D. - Journal: TURKISH JOURNAL OF ONCOLOGY, 1(1)

Demographic and Clinical Features and Factors Associated with Survival in Patients with Primary Glomerulonephritis: Single Tertiary Center Experience - Authors: Paksoy, N., Trabulus, S., Seyahi, N., & Altiparmak, M. R. - Journal: Namik Kemal Tip Dergisi, 11(1)

Efficacy of Sorafenib in Symptomatic Patients with Pretreated Progressive Desmoid Tumors - Authors: Paksoy, N., Ferhatoglu, F., Dogan, I., Ak, N., Pehlivan, M., Ekenel, M., & Basaran, M.

Nodal Response to Neoadjuvant Chemotherapy is a Better Predictive Factor of Survival Than Miller-Payne Scoring in Breast Cancer - Authors: Ak, Naziye, et al. - Journal: Journal of Oncological Sciences, 7.2: 42-49

Evaluation of Prognostic and Predictive Values of Hemogram Parameters in Patients with Advanced Stage Ovarian Carcinoma - Authors: Ak, Naziye, et al. - Journal: Turkish Journal of Oncology/Türk Onkoloji Dergisi, 2021, 36.4

Identifying Risk Factors Associated with Survival and Drug-Related Toxicities in Imatinib-Resistant Gastrointestinal Stromal Tumor (GIST) Patients Treated with Sunitinib - Authors: Ferhatoglu, F., Karabulut, S., Paksoy, N., & Tastekin, D.

Real-life Outcomes of ROS1 Fusion-positive Metastatic Lung Cancer Patients who were Treated with Crizotinib - Authors: Dogan, İ., Khanmammadov, N., Paksoy, N., Ferhatoglu, F., Aydın, E., Vatansever, S., & Aydine, A. - Journal: TURK ONKOLOJI DERGISI-TURKISH JOURNAL OF ONCOLOGY

Predictors of the acquisition of T790M mutation in EGFR-mutant metastatic lung cancer patients who were treated with EGFR inhibitors - Authors: Dogan, I., Khanmammadov, N., Paksoy, N., Vatansever, S., Saip, P., & Aydıner, A. - Journal: Eurasian Journal of Pulmonology

Laterality of Adrenal Gland Metastasis in Lung Cancer: Results of a Comparative Study - Authors: Ferhatoglu, F., Gagatay, T., Okumus, G., Aydiner, A., Paksoy, N., Ak, N., ... & Saip, P. - Journal: Eurasian Journal of Medical Investigation, 7(2)

Poor Risk Factors Affecting Cancer Patients Infected with Covid-19: A Retrospective Comparative Study from a Pandemic Hospital - Authors: Ferhatoglu, F., Kapağan, T., Paksoy, N., Ak, N., Medetalibeyoğlu, A., Şenkal, N., ... & Vatansever, S. - Journal: Turk Onkoloji Dergisi, 38(1)

Systemic Treatment Outcomes of Progressive Medullary Thyroid Carcinoma from the Registries of a Tertiary Cancer Center - Authors: Ferhatoglu, F., Paksoy, N., & Başaran, M. - Journal: Namik Kemal Tip Dergisi, 10(4)

Evaluation of clinical features and risk factors related to late recurrence (> 5 years) in patients with breast cancer - Authors: Ferhatoglu, F., Aydiner, A., & Paksoy, N. - Journal: Journal of Surgery & Medicine (JOSAM), 6(12)

Assessing the Clinical Impact of Lutetium-177 DOTATATE Peptide Receptor Radionuclide Therapy (PRRT) on Metastatic Neuroendocrine Tumors: A Multicenter Real-World Data from Türkiye

Thesis:

Istanbul University Cerrahpaşa Medical Faculty, Internal Medicine Department PAKSOY, Nail. Demographical, clinical characteristics and survival factors in patients withprimary glomerulonephritis: Cerrahpasa Medical Faculty Experience. (2016)

International Refereed Congress / Symposium Publications in Proceedings (ASCO/ESMO Abstracts)

Prognostic factors influencing progression-free survival in HER2 positive metastatic breast cancer patients who treated with lapatinib and capecitabine combination

• Authors: Dogan, I., Paksoy, N., Ak, N., Vatansever, S., Saip, P., & Aydiner, A. (2022)

Efficacy of regorafenib and 5-fluorouracil-based rechallenge treatment in the third-line treatment of metastatic colorectal cancer: A Turkish oncology group study

• Authors: Şenocak Taşçi, E., Oyan, B., Sonmez, O., Mutlu, A. U., Atcı, M. M., Oner, I., ... & Gulmez, A. (2022)

Long-term outcomes and predictors of recurrence in patients with early-stage node-negative breast cancer

• Authors: Dogan, I., Aydin, E., Paksoy, N., Ferhatoglu, F., Ak, N., Ibis, K., ... & Aydiner, A. (2021)

Efficacy of temozolomide in pretreated patients with metastatic sarcoma

• Authors: Paksoy, N., Dogan, I., Ekenel, M., & Basaran, M. (2021)

Efficacy of sorafenib in symptomatic patients with pretreated progressive desmoid tumors

• Authors: Ferhatoglu, F., Paksoy, N., Dogan, I., Ak, N., Pehlivan, M., Ekenel, M., & Basaran, M. (2021)

Efficacy of sorafenib in heavily pretreated adult patients with metastatic osteosarcoma

• Authors: Paksoy, N., Dogan, I., Ekenel, M., & Basaran, M. (2021)

Outcomes and prognostic factors in metastatic renal cell carcinoma patients with brain metastases

• Authors: Dogan, İ., Iribas, A., Paksoy, N., Ekenel, M., Vatansever, S., & Basaran, M. (2021)

Association of response to first-line chemotherapy with the efficacy of atezolizumab in patients with metastatic urothelial carcinoma

• Authors: Tural, D., Olmez, O. F., Sümbül, A. T., Artac, M., Ozhan, N., Akar, E., ... & Erman, M. (2021)

Safety and survival in adult women with platinum-sensitive relapsed BRCA mutant ovarian cancer: A study of patients in Olaparib Turkey Early Access Program—LynTurk study

• Authors: Esin, E., Ahmed, M. A., Yıldırım, H. Ç., Mandel, N. M., Erdemoglu, E., Sari, M., ... & Paydas, S. (2023)

Atezolizumab in patients with metastatic urothelial carcinoma who have progressed after first-line chemotherapy: Results of real-life experiences

• Authors: Tural, D., Ölmez, Ö. F., Sümbül, A. T., Artaç, M., Özhan, N., Akar, E., ... & Kılıçkap, S. (2021)

Dr. Ercan Ozden is a specialist in internal medicine and medical oncology. He earned his medical degree and completed his residency at Istanbul University, Cerrahpaşa Faculty of Medicine. He later received a subspecialty in medical oncology at Kocaeli University Faculty of Medicine from 2016 to 2020.

Dr. Ozden has worked in medical oncology at Şırnak State Hospital. He has also served as an internal medicine specialist at Bağcılar Private Safa Hospital and Küçükçekmece Batı Bahat Hospital. He has extensive clinical experience in both internal medicine and oncology.

Dr. Omer Burcak Binicier is a gastroenterology specialist with strong medical training. He earned his medical degree at Ege University. He completed his internal medicine and gastroenterology specialization at Dokuz Eylül University Faculty of Medicine. Dr. Binicier has over ten years of clinical experience. He has held key positions at SBÜ Tepecik Training and Research Hospital and İzmir Bayraklı City Hospital. He also gained international experience at Korea University.

Dr. Binicier diagnoses and treats a wide range of gastrointestinal diseases. His expertise includes early colon and stomach cancers, inflammatory bowel diseases, liver and pancreatic disorders, and digestive system cancers. He uses advanced endoscopic techniques such as EMR, ESD, ERCP, and endoscopic ultrasound. He is also skilled in minimally invasive obesity treatments. His clinical skills are built on years of hands-on work in top medical centers.

Dr. Muhammed Mustafa Atci is an Associate Professor of Medical Oncology at İstinye University, Liv Hospital Topkapı (2025–present). He previously served as Associate Professor and Education Coordinator at Prof. Dr. Cemil Taşcıoğlu City Hospital (2023–2025). He was also a Medical Oncologist there (2018–2021).

He has been a member of ASCO and the Turkish Society of Medical Oncology since 2018. He is the author or co-author of 19 peer-reviewed international papers on colon, breast, gastric, pancreatic, lung, thyroid, sarcoma, and colorectal cancers.

Notable works include a multicentre study on stage IIB colon cancer survival (Journal of Chemotherapy). He also studied the De Ritis ratio for lung metastasis in testicular cancer (Current Urology). His prognostic studies used PET/CT, MSI, lymph node ratio, and metabolic tumor volume.

Gastroenterology

Pendik Medipol University Hospital

Education

1999 Karadeniz Technical University, Gastroenterology

1997 Atatürk University, Internal Diseases Professorship

1992 Atatürk University, Internal Diseases Associated Professorship

1985 Atatürk University, Internal Diseases Specialist

1981 Atatürk University Faculty of Medicine

Publications

1- Nihat Okçu Gülçin Polat, Arif Yılmaz, Mehmet Koruk, The demographic features of gastric cancers in Erzurum(Eurasian J Med 2000; 32: 63-65)

2- An Evaluation of Upper Gastrointestinal Bleeding Cases. Clinical Sciences-Doctor.2000, - E.akarsu,N.Okçu,et Ark.Northeast Anatolia 6:4:435-438

3-N.Okçu, A.yılmaz. İ.kiki,MDonuk, C.gündoğdu, H.uzunismail. Our Diagnostic Upper Gastrointestinal Endoscopy Results. Atatürk University Medical Journal 1997,29 (2):486

4-N. Okçu, M.gündoğdu, MD onuk, İ.kiki, l.cerrahoğlu, k.yılmaz, I. çapoğlu. The Role of Misoprostol in Preventing Gastroduodenal Lesions in Patients Using Nonsteroidal Anti-Inflammatory Drugs (NSAIDs). Atatürk University Medical Journal 1997,29 (2):453-455.

5-N.Okçu, A. Öz, MD Onuk, E.Akarsu, B. Tekin, Hz Tonbul, H.Kaya. Plasma Fibronectin Levels in Chronic Active Hepatitis and Decoction of Liver Parenchymal Insufficiency and Their Relationship with Liver Functional Status. Turkish J. Gastroenterol 1995;27(4): 422-426.

6-N.Okçu, Tahir Buran, MD Onuk, A. Yılmaz, E.Akarsu, G. Akçay. Prevalence of Helicobacter Pylori in Patients with Duodenal Ulcer in Erzurum and Surrounding Area. Turkish J. Gastroenterol 1995;27(4): 447-450.

7-N.Okçu, bs awake, e. akarsu, e. bakan, z. tonbul. Importance of Carbohydrate Antigens (CA-19-9, CA-125), Carcinoembryonic Antigen (CEA) and Alkaline Phosphatase in Gastric and Colorectal Cancers. Turkish J. Gastroenterol 1995;6:467-471.

8-N. Okçu, MD Onuk, E. Akarsu, H. Doğan, C. Gündoğdu. Major Risk Factors in Patients with Hepatocellular Carcinoma in Our Region. Gastroenterology 1994;5(2):154-157

9-N.Okçu, md. Onuk, e. akarsu, h. doğan, c.gündoğdu, tahir buran. Frequency of gastric carcinoma in Erzurum region, endoscopic and histological features. Gastroenterology 1994;5(2):263-267.

10-N. Okçu, MD Onuk, Tahir Buran, E. Akarsu, MA Çiftçioğlu. Frequency of Helicobacter Pylori in Nonspecific Gastritis Cases in Erzurum Province. Gastroenterology 1994;5(2):211-213.

11-N.Okçu, MD Onuk, Ö. Ünal, E. Akarsu, L. İncesu, K. Akgöz. Diagnostic Value of Ultrasound-Guided Fine Needle Aspiration Biopsy in Intra-Abdominal Mass Lesions. Gastroenterology 1993;4(1):166-68.

12-NOkçu, md. onuk, m. polat, a. yılmaz, m. gündoğdu, m. paç. Budd-Chiari Syndrome (2 Cases). Turkish J Gastroenterhepatol 1993; 4(1):77-80.

13-N.Okçu, H. Koçak, MD Onuk, M. Gündoğdu, E. Bakan, A. Yılmaz, A. Başoğlu, A. Ateş, F.A. Paç. The Effect of Atrial Pressure Changes and Cardiac Nerves on Plasma Atrial Natriuretic Peptide (ANP) Levels. Vascular Surgery 1993; 27(2): 128-132

15-N.Okçu, MD Onuk, A.Yılmaz, M. Gündoğdu, T. Buran. Effects of Omeprozole and Ranitidine on Peptic Ulcer Healing. Doğa-Tr.J. of Medical Sciences 1992;16:657-658.

16-N. Okçu, Mr. Yiğitoğlu, B. Adam, E. Bakan. The Effect of Digixin on Plasma Atrial Natriuretic Peptic Level in Patients with Congestive Heart Failure. S.Ü. Medical Faculty Journal 1991;7(2):243-247..

17-N.Okçu, A. Yılmaz. The Effect of Histamine H2 -Receptor Antagonists in Upper Gastrointestinal System Bleeding. Endoscopy Journal 1991;2(4):17-23.

18-N.Okçu, E. Bakan, B. Adam, A. Yılmaz, Mr. Yiğitoğlu. Sex Hormones and Sex Hormone Binding Globulin Levels in Patients with Chronic Hepatitis and Liver Cirrhosis (Letter to the Editor). Nature-Tr. J. Of Medical Sciences 1991;15:1-2.

19-N.Okcu Ömer Yılmaz.Helıcobacter pylori and related gastrointestinal system diseases. Turkish Clinics JMed Sci. 2013;33(3):806-13

20-Nihat Okçu, Ömer Yılmaz, Hakan Dursun, Gülçin Polat. The relationship between dyspeptic symptoms, nutritional habits, endoscopic and histological findings (Eurasian J Med 2006; 38: 13-17)

21-Mehmet Bilici,1Nihat Okcu,1Kerim Cayir,1Ibrahim Pirim,2Salim B. Tekin,1andCemal Gundogdu3 - Distribution of HLA Tissue Groups in Patients with Gastric Cancer Eurasian J Med. 2010 Apr; 42(1): 9.11.

22-Nihat Okcu,Abdulhalim Bak,Mehmet Sari,Mehmet Arslan,Sait Kapicioglu:The fibroblast proliferation, relationship of hepatocyte growth factor (HGF) and interferon-A2A Gastroenterology April 2000Volume 118,Issue 4, Part 2, PageA1404

23-Kubra Kaynar,Sait Kapicioglu,Mehmet Sari,Nihat Okcu,Abdulhalim Baki. The effect of fish oil on stress ulcer prophylaxis GastroenterologyVolume 118, Issue 4, Part 2, PageA1255

Education

Doctor: Kilis Merkez No. 1 Health Center, 2006-2008
Assistant Doctor: Mersin University Faculty of Medicine, 2009-2013
Specialist Doctor: Bingöl Genç State Hospital, 2013-2014
Minor Assistant: Akdeniz University Faculty of Medicine, 2014-2017
Minor Specialist: Erzurum Regional Training and Research Hospital, 2017-2018
Subspecialist: Gaziosmanpaşa Training and Research Hospital, 2018-2020
Attending Specialist: Başakşehir Çam and Sakura City Hospital, 2020-2022
Associate Professor: Başakşehir Çam and Sakura City Hospital, 2023
Associate Professor: Istinye University Medicalpark Gaziosmanpaşa Hospital, 2023-2024

Scientific Memberships

Turkish Pediatric Society
Turkish Society for Pediatric Gastroenterology Hepatology and Nutrition
ESPGHAN - European Society for Pediatric Gastroenterology Hepatology and Nutrition.

Medical Intrests

• 
  -Irritable (Restless) Bowel Syndrome
• -Food allergies associated with the digestive system
• -Constipation, faecal incontinence
• -Acute and chronic diarrhoea, malabsorption
• -Chronic abdominal pain
• -Gastroesophageal reflux disease
• -Celiac disease
• -Ulcerative colitis, Crohn's disease
• -Treatment before and after liver transplantation
• -Acute and chronic pancreatitis

O médico completou a formação de especialização em Oncologia de Radiação na Faculdade de Medicina da Universidade de Marmara de 2012 a 2016. Antes disso, o médico completou uma graduação em Medicina, ministrada em inglês, na mesma instituição de 2004 a 2011. O médico tem uma sólida base em educação médica, começando com a educação secundária na Escola Número Dezesseis de Shirvan no Azerbaijão de 1998 a 2004.<\/p>

Prof. M.D. Yusuf Serdar Sakin was born in Nevşehir in 1978. After completing his primary and secondary education in Ankara, he graduated from the Faculty of Medicine at Gülhane Military Medical Academy in 2002.
Following his graduation, he served in Gole/Ardahan for two years. He started his internal medicine training at the Department of Internal Medicine, Gülhane Faculty of Medicine.
After completing his training, he worked as an internal medicine specialist in Ankara. A year later, he began additional training in the Department of Gastroenterology at Gülhane Faculty of Medicine and completed his training in 2014.
After graduation, Yusuf Serdar Sakin continued to work in the same department. He also received advanced endoscopy and Motility training at AMC Center in the Netherlands in 2017.
After obtaining the title of Associate Professor in 2017, he became a Professor in 2023.
He currently provides medical services to patients at Koru Ankara Hospital. His areas of medical interest include:

-Endoscopic retrograde cholangiopancreatography (ERCP)
-Push enteroscopy
-Endoscopic mucosal resection
-High-resolution manometry
-pH/pH-impedance metry analysis
-Advanced endoscopic procedures (stenting, dilation, etc.)
-Gastrointestinal motility disorders
-Gastroesophageal reflux disease
-Inflammatory bowel diseases
-Advanced endoscopic procedures and pancreatitis.

Areas of Interests

• General Gastrointestinal Diseases
• Endoscopic procedures (gastroscopy, colonoscopy, enteroscopy, capsule endoscopy)
• Interventional endoscopy
• ERCP
• Endoscopic ultrasonography (EUS)
• Cholangioscopy
• Diseases of the biliary system and pancreas

Education:
 

• 1990 -1996 Ankara University Faculty of Medicine
• 1997 - 2001 Ankara Numune Training and Research Hospital Internal Medicine Residency
• 2001 - 2003 Turkey High Specialization Training and Research Hospital, Gastroenterology Subspecialization
• 2010 - 2010 State University of New York, USA, Department of Gastroenterology, EUS training program
   

Experience:
 

• June 2024 LIV Hospital Ulus Hospital
• 2018 - 2024 Florence Nightingale Hospitals, Gastroenterology Clinic
• 2013 - 2018 Memorial Ataşehir Hospital, Gastroenterology Clinic
• 2008 - 2013 Gaziantep University Faculty of Medicine, Department of Gastroenterology, Assoc. Prof. Dr.
• 2008 - 2008 Medicalpark Gaziantep Hospital Gastroenterology Clinic
• 2004 - 2008 Gaziantep State Hospital Gastroenterology Clinic, Endoscopy Unit Founding Physician

Publications

• Arhan M, Koklu S, Koksal AS, Yolcu OF, Koruk S, Koruk I, Kayacetin E. Alverine citrate induced acute hepatitis. World J Gastroenterol 2004; 10(15): 2303-4  ISSN: 1007-9327
• Parlak E, Cicek B, Koruk I, Disibeyaz S, Sahin B. Successful prevention of stent migration caused by placement of a second stent. Endoscopy. 2005; 37(4): 404. ISSN: 0013-726X
• Koruk I, Ozturk ZA, Köklü S, Koruk S, Ozdede S. Port-site metastasis after laparoscopic cholecystectomy. Acta Gastroenterol Belg. 2008; 71(2): 283-4      ISSN:0001-5644
• Koruk I, Parlak E, Secilmis S, Akdogan M, Koklu S.  Endoscopic sphincteroplasty with large balloon dilatation for extraction of difficult common bile duct stones. Dig Dis Sci. 2008 Jun;53(6):1737-8. ISSN: 0163-2116
• Ozkaya M, Yuzbasioglu MF, Koruk I, Cakal E, Sahin M, Cakal B. Preoperative detection of insulinomas: two case reports. Cases J. 2008 Nov 29; 1(1): 362  ISSN: 1757-1626
• Yılmaz Ö, Koruk İ, Çayır K, Koruk M, Yılmaz A. Usefullness of serum insulin-like growth factor (IGF-1) and insulin-like growth factor binding protein-3 (IGFBP-3) for colorectal cancer diagnosis. Int J Hematol Oncol 2009; 19(1): 23-27  ISSN: 1306-133X
• Savaş C, Koruk İ, Koruk M, Kadayıfçı A, Sarı İ. Association of prion protein with the stage of liver fibrosis in chronic viral hepatitis. Trakya Univ Tip Fak Derg. 2010; 27(4): 373-7. DOI: 10.5174/tutfd.2009.02284.1 ISSN: 1301-3149
• Buyukberber M, Koruk I, Cıkman O, Koruk M, Kucukoglu ME, Sakman A, Demir O, Sahinoz S. Serum cystatin C measurement in differential diagnosis of intra and extrahepatic cholestatic diseases. Ann Hepatol 2010; 9(1): 58-62  ISSN: 1665-2681
• Gulsen MT, Koruk I, Dogan M, Beyazit Y. Diagnostic accuracy of cascade stomach by upper gastrointestinal endoscopy in patients with obscure symptoms: A multi-center prospective trial. Clin Res Hepatol Gastroenterol. 2011; 35: 489-93. DOI: 10.1016/j.clinre.2011.03.004         ISSN: 2210-7401
• Koruk I, Aydın U, Koruk S, Aydınlı M. A newly defined biliary anatomic variation. Turk J Gastroenterol 2011; April 22(2): 232-3  DOI:10.4318/ tjg.2011.0204  ISSN: 1300-4948
• Koruk İ, Özdemir H, Aydınlı M, Tarakçıoğlu M, Koruk M. The relation between serum Cytokeratin 18 and acute pancreatitis: Can it be a serological predictive marker?. Turk J Gastroenterol. 2011. DOI:10.4318/tjg.2011.0256 ISSN: 1300-4948
• Aydinli M, Koruk I, Koruk S, Aydin U, Kadayifci A. Intraoperative cholangioscopy with an ultrathin endoscope for hemobilia. Endoscopy 2011;43 Suppl 2 UCTN:E410. doi: 10.1055/s-0030-1256897. Epub 2012 Jan 24
• Aydinli M, Koruk I, Dag MS, Savas MC, Kadayifci A. Ultrathin endoscopy for gastrointestinal strictures. Digestive Endoscopy 2012 May;24(3):150-3. doi: 10.1111/j.1443-1661.2011.01206.x. Epub 2011 Oct 27                 ISSN: 0915-5635
• Yılmaz Ö, Koruk İ, Onbaş O, Ozgokce M. Portal venous gas resulting from enteritis in a case with portal hypertension: Case report. Türkiye Klinikleri Tıp Bilimleri Dergisi. 2012; 32 (4): 1195-8 ISSN: 1300-0292
• Demiryürek S, Koruk I, Bozdag Z, Ozkara E, Kaplan DS, Oztuzcu S, Cetinkaya A, Alasehirli B, Demiryürek AT. Investigation of the esophageal Rho-kinase expression in patients with Barrett's esophagus. Ultrastruct Pathol. 2013 Aug;37(4):284-9. doi: 10.3109/01913123.2013.797064        ISSN: 0191-3123
• Dag MS, Ozturk ZA, Koruk I, Kısacık B, Gerenli O, Aydınlı M, Kadayıfcı A. Intestinal Behcet's disease with severe pulmonary arterial involvement mimicking ulcerative colitis. Asian Biomedicine. 2013; 7(5): 715-8      ISSN: 1905-7415
• Dağ MS, Aydınlı M, Oztürk ZA, Türkbeyler IH, Koruk I, Savaş MC, Koruk M, Kadayıfçı A. Drug- and herb-induced liver injury: a case series from a single center. Turk J Gastroenterol. 2014 Feb;25(1):41-5. doi: 10.5152/tjg.2014.4486ISSN: 1300-4948
• Kadayifci A, Atar M, Parlar S, Balkan A, Koruk I, Koruk M. Transnasal endoscopy is preferred by transoral endoscopy experienced patients. J Gastrointestin Liver Dis. 2014 Mar;23(1):27-31     ISSN: 1841-8724
• Alasehirli B, Oğuz E, Oksuzler E, Koruk I, Oztuzcu S, Ozkara E, Karakok M, Erbagcı AB, Demiryurek AT. Investigation of intercellular adhesion molecules (ICAMs) gene expressions in patients with Barrett's esophagus. Tumour Biol. 2014 May;35(5):4907-12. doi: 10.1007/s13277-014-1644-3      ISSN: 1010-4283
• Dag M, Özturk Z, Aydınlı M, Koruk I, Kadayfçı A. Postpartum hepatotoxicity due to herbal medicine Teucrium polium. Ann Saudi Med. 2014 Nov-Dec;34(6):541-3. doi: 10.5144/0256-4947.2014.541        ISSN: 0256-4947
• Tahtacı M, İbiş M, Koruk İ, Parlak E. Endoscopic removal of fractured basket traction wire. Turk J Gastroenterol. 2014 Dec;25 Suppl 1:324-5. doi: 10.5152/tjg.2014.6582            ISSN: 1300-4948
• Dağ MS, Koruk İ, Aydınlı M, Çam H, Öztürk ZA, Kadayıfçı A. An unusual cause of esophageal ulcer; sertraline hydrochloride. Turk J Gastroenterol. 2014 Dec;25 Suppl 1:250-1. doi: 10.5152/tjg.2014.4646  ISSN: 1300-4948
• Balkan A, Yılmaz N, Balkan Y, Koruk İ, Örkmez M, Aydınlı M, Koruk M. Relationship between liver injury and serum cytokeratin 18 levels in asymptomatic hepatitis B virus carriers and in patients with chronic hepatitis B infection. Arab Journal of Gastroenterology. 2017; 18: 98–103                   ISSN: 1687-1979
• Koruk İ. How to manage difficult cannulation in ERCP. Gastroenterology and Hepatology: Open Access. 2017, 6(3): 00194. DOI: 10.15406/ghoa.2017.06.00194 ISSN: 2373-6372
• Valori R, Cortas G, de Lange T, Balfaqih OS, de Pater M, Eisendrath P, Falt P, Koruk I, et al.  Performance measures for endoscopy services: A European Society of Gastrointestinal Endoscopy (ESGE) Quality Improvement Initiative.  Endoscopy 2018; 50: 1186–1204   ISSN 0013-726X
• Koruk S, Koruk I, Mizrak A. A, Bilgi M, Gul R, Bozgeyik S. Dexmedetomidine or midazolam in combination with propofol for sedation in endoscopic retrograde cholangiopancreatography: a randomized double blind prospective study. Videosurgery Miniinv. 2020; 15(3): 526-32 doi.org/10.5114/wiitm.2020.95066

O médico é Professor de Medicina especializado em Cirurgia Geral com ampla experiência em oncologia cirúrgica, cirurgia gastrointestinal, cirurgia laparoscópica, cirurgia da obesidade, cirurgia de hérnia e proctologia. <\/p>

Graduado pela Faculdade de Medicina Cerrahpasa da Universidade de Istambul, o médico completou uma residência em Cirurgia Geral na Escola de Medicina da Universidade Uludağ. <\/p>

Mais expertise foi adquirida através de um doutorado em Fisiologia e uma bolsa de pesquisa no Departamento de Cirurgia Colorretal da Cleveland Clinic Foundation. <\/p>

Atualmente, o médico atua como Professor de Medicina no Hospital Medicana Bursa, com uma carreira que abrange funções na Universidade Uludağ e na Universidade KTO Karatay.<\/p>