Hakan Koç

ORCID: 0000-0003-1241-1686
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About
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Research Areas
  • Hematopoietic Stem Cell Transplantation
  • Acute Myeloid Leukemia Research
  • Retinal and Optic Conditions
  • Glaucoma and retinal disorders
  • Acute Lymphoblastic Leukemia research
  • Chronic Lymphocytic Leukemia Research
  • Cerebral Venous Sinus Thrombosis
  • Ocular Surface and Contact Lens
  • Retinal Diseases and Treatments
  • Retinal Imaging and Analysis
  • Neutropenia and Cancer Infections
  • Multiple Myeloma Research and Treatments
  • Polyomavirus and related diseases
  • Chronic Myeloid Leukemia Treatments
  • Corneal surgery and disorders
  • T-cell and B-cell Immunology
  • Pharmacological Effects and Toxicity Studies
  • Platelet Disorders and Treatments
  • Immune Response and Inflammation
  • Ocular Diseases and Behçet’s Syndrome
  • Blood disorders and treatments
  • Hepatitis C virus research
  • Intraocular Surgery and Lenses
  • Hepatitis B Virus Studies
  • Cytomegalovirus and herpesvirus research

Giresun University
2022-2025

Bülent Ecevit University
2022

Afyon Kocatepe University
2016

Ankara University
1989-2011

Kayseri Eğitim ve Araştırma Hastanesi
2006

Memorial Ankara Hospital
1992-2003

Hôpital Saint-Louis
2002

European Society for Blood and Marrow Transplantation
2002

Hôpital Saint-Antoine
2002

Sorbonne Université
2002

PURPOSE: Several studies show that allogeneic peripheral blood stem cells (PBSCs) engraft more rapidly than bone marrow (BM). However, the data are inconsistent with regard to acute and chronic graft-versus-host disease (GVHD), relapse, transplant-related mortality (TRM), leukemia-free survival (LFS). PATIENTS AND METHODS: Between January 1994 December 2000, 3,465 adult patients (older 15 years of age) were reported European Group for Blood Marrow Transplantation Registry from 224 centers....

10.1200/jco.2002.12.049 article EN Journal of Clinical Oncology 2002-12-15

The prevalence of male androgenetic alopecia is increasing worldwide. Evaluation dry eye parameters and meibomian glands patients may help to better understand the effect this disease on provide appropriate treatment for these patients. aim work evaluate relationship between alopecia, eye, gland function. A total 80 eyes patients, 40 diagnosed with healthy men were included. presence was evaluated Schirmer I test, invasive tear film break-up time (TBUT), Oxford scale scoring (cornea...

10.1080/08164622.2025.2452275 article EN Clinical and Experimental Optometry 2025-01-26

To evaluate the efficacy of intravitreal dexamethasone in immune recovery uveitis (IRU) diagnosed with worsening visual symptoms after cytomegalovirus (CMV) retinitis caused by acquired immunodeficiency syndrome (AIDS). A single case report was obtained from a tertiary referral center and retrospectively evaluated. 53-year-old male patient known AIDS admitted to our clinic vision loss that started 1 month before CMV based on clinical findings (CD4 + T lymphocyte count 38 cells/μL). Two...

10.1080/09273948.2025.2496977 article EN Ocular Immunology and Inflammation 2025-04-23

Comparison of the efficacy monthly anti-VEGF versus dexamethasone (DEX) implant in patients with diabetic macular edema (DME) whose persists despite three doses therapy.This retrospective study included 94 eyes central thickness (CMT) > 300 μm previously receiving anti-VGEF (aflibercept or ranibizumab) injections between January 2014 and 2019. The were divided into four groups. first second groups who received more initial treatment after treatment. third fourth switched to intravitreal...

10.1186/s12886-023-02831-6 article EN cc-by BMC Ophthalmology 2023-03-13

The prevalence of post-COVID headaches is not low. eye can be affected by this infection, but it clear yet what the relationship between persistent and thickness retinal nerve fiber layer (RNFL) after COVID-19 infection study aims to investigate these subjects.

10.1080/01616412.2024.2340875 article EN Neurological Research 2024-04-16

10.1186/s40942-024-00575-z article EN cc-by International Journal of Retina and Vitreous 2024-09-05

Objectives: This study was conducted to determine the prevalence and risk factors of low back pain in pregnancy period. Methods: The group a cross sectional pregnant population admitted health centers hospitals for routine

10.3233/bmr-2006-192-308 article EN Journal of Back and Musculoskeletal Rehabilitation 2006-11-24

The objective of this study was to quantify subpopulations CD34+ cells such as CD41+ and CD42+ that might represent megakaryocyte (MK) precursors in peripheral blood stem cell (PBSC) collections normal, recombinant human granulocyte-colony stimulating factor (rhG-CSF) primed donors determine whether there is a statistical association between the dose infused megakaryocytic time course platelet recovery following an allogeneic PBSC transplantation. Twenty-six patients with various hematologic...

10.1002/jca.1015 article EN Journal of Clinical Apheresis 2001-01-01

AbstractAbstractHemorrhagic cystitis (HC) is one of the most troublesome complications bone marrow transplantation (BMT) and sometimes may be life-threatening. The etiology prevalence HC depends on type transplant period after BMT. Here we report about 134 patients transplanted in a single center (89 allogeneic 45 autologous) between May 1988 August 1995. Forty-six (34.3%) had Thirty-four (38%) alloBMT 12 (27%) autoBMT (p=0.18). onset was 7 to 125 days transplantation. degree mild moderate...

10.1179/joc.1997.9.1.56 article EN Journal of Chemotherapy 1997-01-01

Abstract: Allogeneic peripheral blood stem cell transplantation (PBSCT) is rarely applied for the treatment of severe aplastic anemia (SAA) because questionable durability engraftment and increased risk graft versus host disease (GVHD). We performed allogeneic PBSCT in 3 SAA patients from their human leukocyte antigen (HLA)–identical siblings. One received bone marrow after conditioning with cyclophoshamide (Cy) plus antithymocyte globulin. He had a second transplant cells original donor...

10.1046/j.1526-0968.2001.005001054.x article EN Therapeutic Apheresis 2001-02-01
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