Medical Oncology · Acibadem Bakirkoy Hospital, İstanbul Assoc. Prof. İzzet Doğan, MD
✓ Medically verified profileAssoc. Prof. İzzet Doğan, MD
Assoc. Prof. İzzet Doğan, MD is a medical oncologist at Acibadem Bakirkoy Hospital and Acibadem Atakent Hospital in İstanbul, Turkey. He treats breast, gastrointestinal, lung and thoracic, urological, gynecological, central nervous system, skin, and head and neck cancers, sarcomas and cancer of unknown primary, using immunotherapy and targeted therapies. He consults in Turkish and English.
Accepting international patientsAbout Assoc. Prof. İzzet Doğan, MD
Assoc. Prof. İzzet Doğan, MD is a medical oncologist working in the Medical Oncology Department at Acibadem Bakirkoy Hospital and Acibadem Atakent Hospital in İstanbul. With more than 18 years in medicine, his practice covers a broad range of solid tumors in adults, including breast, gastrointestinal, lung and thoracic, urological, gynecological, central nervous system, skin, and head and neck cancers, as well as soft tissue and bone sarcomas and cancers of unknown primary origin.
Dr. Doğan graduated from Hacettepe University Faculty of Medicine in 2008 and began his career as a general practitioner at Korgan Çayırkent Health Center in Ordu. He completed his Internal Medicine training at Ankara University Faculty of Medicine in 2013 and then worked as an Internal Medicine specialist at Aksaray State Hospital, Kütahya Military Hospital and Antalya Training and Research Hospital. From 2018 to 2021 he trained in Medical Oncology at İstanbul University İstanbul Faculty of Medicine, completing his specialization in 2021. He subsequently practiced as a Medical Oncology specialist and later as an associate professor at Başakşehir Çam ve Sakura City Hospital before joining Acıbadem Healthcare Services in 2023. He is a member of the European Society for Medical Oncology (ESMO), the Turkish Medical Oncology Association and the Turkish Medical Association, and he has co-authored peer-reviewed publications on metastatic breast cancer, renal cell carcinoma with brain metastases, metastatic Ewing sarcoma, HER2-positive metastatic gastric cancer, ALK-mutant non-small cell lung cancer and recurrent ovarian granulosa cell tumors.
Clinical focus
A substantial part of Dr. Doğan’s clinical and research work relates to breast cancer, including early-stage disease and HER2-positive metastatic disease. He also treats gastrointestinal cancers, lung and other thoracic cancers, urological cancers, gynecological tumors, central nervous system tumors and endocrine pancreatic tumors. His practice further includes soft tissue and bone sarcomas, melanoma and other skin tumors, head and neck cancers and cancer of unknown primary, where the site of origin cannot be readily identified.
Treatment planning in his practice draws on immunotherapy and targeted therapies, informed by his interests in molecular pathology and cancer screening. The choice of systemic treatment depends on the tumor type, stage, molecular features and the patient’s general condition, and is discussed with each patient on an individual basis.
How Dr. Doğan works with international patients
Dr. Doğan consults in Turkish and English, and interpreters can be arranged for patients who speak other languages. Before a visit, the international patient team coordinates the collection of prior reports and imaging, arranges appointments and organizes the hospital visit. A first consultation typically covers the patient’s history and symptoms, a review of existing imaging, pathology and previous treatments, a clinical examination and a discussion of the available options. Video consultation is available for international patients who wish to discuss their case with Dr. Doğan before traveling or as part of follow-up.
What Dr. Doğan treats and performs
Each item opens the condition or treatment page with the care pathway for international patients.
Areas of practiceGastrointestinal oncology
Conditions treated
- Breast cancer
- Lung and thoracic cancers
- Urological cancers
- Gynecological tumors
- Central nervous system tumors
- Soft tissue and bone sarcomas
- Melanoma and other skin tumors
- Head and neck cancers
Procedures performed
Education, career and memberships
Education & training
Education
- 2021İstanbul University İstanbul Faculty of Medicine Medical Oncology
- 2013Ankara University Faculty of Medicine Internal Medicine
- 2008Hacettepe University Faculty of Medicine
Career
Professional Experience
- 2023Acıbadem Healthcare Services
- 2023Başakşehir Çam ve Sakura City Hospital / Medical Oncology- Associate Professor Doctor
- 2021–2022Başakşehir Çam ve Sakura City Hospital / Medical Oncology Specialist
- 2018–2021İstanbul University İstanbul Faculty of Medicine / Department of Internal Medicine/Division of Medical Oncology) / Medical- Oncology- Research Assistant
- 2015Antalya Training and Research Hospital / Internal Medicine Specialist
- 2014Kütahya Military Hospital / Internal Medicine Specialist
- 2013Aksaray State Hospital / Internal Medicine Specialist
- 2009–2013Ankara University Faculty of Medicine Department of Internal Medical Sciences /Department of Internal Medicine / Internal Medicine Research Assistant
- 2008–2009Korgan Çayırkent Health Center, Ordu / General Practitioner
Memberships
Professional Memberships
- European Society for Medical Oncology (ESMO)
- Turkish Medical Oncology Association
- Turkish Medical Association
Selected publications
Selected Publications
- Outcomes and Prognostic Factors in HER2-Positive Metastatic Breast Cancer Patients Who Had Developed Brain Metastasis in the Treatment Process (2023). Oncology, S. Karger AG, 101, Doi: 10.1159/000529030 Doğan İzzet, Kızıldağ Yırgın İnci, Özkurt Selnur, İbiş Kamuran, Vatansever Sezai, Saip Pınar Mualla, Aydıner Adnan
- Long-term outcomes and predictors of recurrence in node-negative early stage breast cancer patients. Doğan İzzet, Önder Semen, Tükenmez Mustafa, Cabioğlu Neslihan, Küçücük Nezihe Seden, Müslümoğlu Mahmut, Özmen Vahit, Saip Pınar Mualla, İğci Abdulla Journal of Cancer Research and Clinical Oncology, Doi: 10.1007/s00432-023-05276-y
- Termination of trastuzumab in HER2-positive metastatic breast cancer patients who received trastuzumab beyond progression (2023). Scientific Reports 2023(13), Doi: 10.1038/s41598-023-35715-2 Doğan İzzet, Aydın Esra, Khanmammadov Nijat, Paksoy Nail, Saip Pınar Mualla, Aydıner Adnan
- Demographic and Clinical Features of Patients with Metastatic Breast Cancer: A Retrospective Multicenter Registry Study of the Turkish Oncology Grou Doğan İzzet, Aksoy Sercan, Çakar Burcu, Başaran Gül, Ercelep Özlem, Mandel Nil Molinas, Korkmaz Taner, Gökmen Erhan, Aydıner Adnan, Saip Pınar Mualla, (2023). Cancers, MDPI, 15, Doi: 10.3390/cancers15061667
- Outcomes and prognostic factors in metastatic renal cell carcinoma patients with brain metastases. Journal of Cancer Research and Therapeutics, 1-5., Doi: 10.4103/jcrt.jcrt_972_22 Doğan İzzet, İribaş Çelik Ayça, Paksoy Nail, Vatansever Sezai, Başaran Mert
- Efficacy of the VIT (vincristine, irinotecan and temozolomide) regimen in adults with metastatic Ewing sarcoma. (2022). Journal of Chemotherapy, Doi: 10.1080/1120009X.2022.2104295 Doğan İzzet, İribaş Çelik Ayça, Ahmed Melin Aydan, Başaran Mert
- Evaluation of Prognostic Factors and Trastuzumab-based Treatments in HER2/Neu-positive Metastatic Gastric Cancer. (2022). Journal of the College of Physicians and Surgeons Pakistan, 32(8), 1014-1019., Doi: 10.29271/jcpsp.2022.08.1014 Doğan İzzet, Karabulut Senem, Taştekin Didem, Ferhatoğlu Ferhat, Paksoy Nail, Şakar Burak
- The frequency and prognostic significance of ABO/Rh blood groups in male breast cancer patients: a multicenter study. (2022). Medicine, 101(35), 1-6., Doi: 10.1097/MD.0000000000030147 Doğan İzzet, Ayhan Murat, Gürbüz Mustafa, Küçükarda Ahmet, Aydın Esra, Ürün Yüksel, Çiçin İrfan, Saip Pınar Mualla
- Evaluation of clinicopathological features determining treatment response in patients with ALK mutant NSCLC. (2022). Medicine, 101(34), 1-6., Doi: 10.1097/md.0000000000030188 Doğan İzzet, Gürbüz Mustafa, Paksoy Nail, Ferhatoğlu Ferhat, Vatansever Sezai, Saip Pınar Mualla, Demirkazık Ahmet, Aydıner Adnan
- Hormonal Therapy in Pretreated Patients With Recurrent Ovary Granulosa Cell Tumor Journal of Pharmacy Practice, Doi: 10.1177/08971900221129679 Doğan İzzet, Aydın Esra, Topuz Samet, Saip Pınar Mualla, Salihoğlu Mehmet Yavuz, Aydıner Adnan


