Browsing by Author "Goker, Hakan"

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    Autologous Hematopoietic Progenitor Cell Mobilization and Collection in Adult Patients Presenting with Multiple Myeloma and Lymphoma: A Position-Statement from The Turkish Society of Apheresis (TSA)
    (2017) Tekgunduz, Emre; Arat, Mutlu; Goker, Hakan; Ozdogu, Hakan; Kaynar, Leylagul; Cagirgan, Seckin; Erkurt, Mehmet Ali; Vural, Filiz; Kiki, Ilhami; Altuntas, Fevzi; Demirkan, Fatih; https://orcid.org/0000-0002-8902-1283; 29153306; AAD-5542-2021
    Autologous hematopoietic cell transplantation (AHCT) is a routinely used procedure in the treatment of adult patients presenting with multiple myeloma (MM), Hodgkin lymphoma (HL) and various subtypes of non-Hodgkin lymphoma (NHL) in upfront and relapsed/refractory settings. Successful hematopoietic progenitor cell mobilization (HPCM) and collection are the rate limiting first steps for application of AHCT. In 2015, alinost 1700 AHCT procedures have been performed for MM, HL and NHL in Turkey. Although there are recently published consensus guidelines addressing critical issues regarding autologous HPCM, there is a tremendous heterogeneity in terms of mobilization strategies of transplant centers across the world. In order to pave the way to a more standardized HPCM approach in Turkey, Turkish Society of Apheresis (TSA) assembled a working group consisting of experts in the field. Here we report the position statement of TSA regarding autologous HPCM mobilization strategies in adult patients presenting with MM and lymphoma. (C) 2017 Elsevier Ltd. All rights reserved.
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    Current Practice of Autologous Hematopoietic Progenitor Cell Mobilization in Adult Patients with Multiple Myeloma And Lymphoma: The Results of A Survey From Turkish Hematology Research And Education Group (Threg)
    (2017) Tekgunduz, Emre; Demirkan, Fatih; Vural, Filiz; Goker, Hakan; Ozdogu, Hakan; Kiki, Ilhami; Aydogdu, Ismet; Kaynar, Leylagul; Erkurt, Mehmet Ali; Cagirgan, Seckin; Besisik, Sevgi; Dagdas, Simten; Koca, Ebru; Kadikoylu, Gurhan; Gunduz, Eren; Yilmaz, Mehmet; Bekoz, Huseyin; Ural, Ali Ugur; Basturk, Abdulkadir; Arat, Mutlu; Albayrak, Murat; Ozturk, Erman; Akyol, Alev; Bolaman, Ali Zahit; Nevruz, Oral; Ozkan, Hasan Atilla; Ozgur, Gokhan; Altuntas, Fevzi; 29153305
    Autologous hematopoietic cell transplantation (AHCT) is an established treatment option for adult patients presenting with multiple myeloma (MM), Hodgkin lymphoma (HL) and various subtypes of non-Hodgkin lymphoma (NHL) in upfront and/or relapsed/refractory disease settings. Although there are recently published consensus guidelines addressing critical issues regarding autologous hematopoietic progenitor cell mobilization (HPCM), mobilization strategies of transplant centers show high variability in terms of routine practice. In order to understand the current institutional policies regarding HPCM in Turkey and to obtain the required basic data for preparation of a national positional statement on this issue, Turkish Hematology Research and Education Group (ThREG) conducted a web-based HPCM survey. The survey was designed to include multiple-choice questions regarding institutional practice of HPCM in adults presenting MM, HL, and NHL. The representatives of 27 adult HCT centers participated to the study. Here we report the results of this survey shedding light on the real world experience in Turkey in terms of autologous HPCM mobilization strategies in patients presenting with MM and lymphoma. (C) 2017 Elsevier Ltd. All rights reserved.
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    Elotuzumab Plus Pomalidomide or Lenalidomide is Able to Achieve Durable >= Vgpr Responses Among Immunomodulatory/Proteasome Inhibitor Refractory Myeloma Patients: A Report on Multicenter Experience From Turkey
    (2019) Beksac, Meral; Seval, Guldane Cengiz; Paydas, Semra; Tuglular, Tulin Firatli; Arslan, Onder; Goker, Hakan; Kaynar, Leylagul; Altuntas, Fevzi; Atalay, Figen; Teke, Havva Uskudar; Bolaman, Ali Zahit; Pehlivan, Mustafa; Sonmez, Mehmet; Demir, Ahmet Muzaffer; Topcuoglu, Pervin; Yilmaz, Mehmet; Kabukcu, Sibel Hacioglu; Albayrak, Murat; Yurttas, Nurgul Ozer; Salihoglu, Ayse; Cakar, Merih Kizil; Gurman, Gunhan
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    Generic Imatinib Mesylate is as Effective as Original Glivec in the Clinical Management of CML
    (2015) Malkan, Umit Y.; Aksu, Salih; Aktimur, Sude H.; Atay, Hilmi; Bektas, Ozlen; Buyukasik, Yahya; Demiroglu, Haluk; Eliacik, Eylem; Esme, Mert; Hacihanefioglu, Abdullah; Gunes, Gursel; Goker, Hakan; Karakus, Sema; Kilickap, Saadettin; Koca, Ebru; Ozcebe, Osman I.; Sayinalp, Nilgun; Tarkun, Pinar; Turgut, Mehmet; Haznedaroglu, Ibrahim C.
    Unsustainable drug prices in chronic myeloid leukemia (CML) and cancer may be causing harm to patients. The aim of this multi-center study is to assess the efficacy of generic imatinib mesylate (IM) over Glivec in terms of hematological, cytogenetic, and molecular responses in CML. The data of 120 CML patients, who were treated with generic or original form of IM, were obtained from six different hematology clinics in Turkey between the years of 2009-2014 and analyzed retrospectively. Initial evaluation revealed that only one patient who was using original molecule switched to second generation tyrosine kinase inhibitor (TKI). In this period, hematological response(HR) was observed in 99.2% of the patients, cytogenetic response (CR) was observed in 88.7% of the patients (47 of 53), and molecular response (MR) was observed in 75% of the patients. Clinicians had a tendency to prefer generic molecules in each sequent visit, and this switch rate was statistically significant (p<0.001). 11 patients, who were using original molecules during all cohorts, switched to second generation TKI. On the other hand, only one patient, who was using generic molecules, switched to second generation TKI. Our paper may help to clarify the doubts about the efficacy of generic IM compared to original molecule. In our study we did not find any significant difference in HR, CR, and MR for original and generic drugs in each visit. Herein, we find low rates of need to switch to second generation TKIs with generic IM and no difference in treatment responses between generic and original molecules that confirms the non-inferiority of generic TKIs over original molecules.
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    Hematopoietic Stem Cell Transplantation for Patients with Paroxysmal Nocturnal Hemoglobinuria with or without Aplastic Anemia: A Multicenter Turkish Experience
    (2021) Yilmaz, Ergun; Soyer, Nur; Seval, Guldane Cengiz; Bozdag, Sinem Civriz; Topcuoglu, Pervin; Unal, Ali; Kaynar, Lalegul; Ozgur, Gokhan; Sucak, Gulsan; Goker, Hakan; Velet, Mustafa; Ozdogdu, Hakan; Yilmaz, Mehmet; Kaya, Emin; Salim, Ozan; Deveci, Burak; Karadogan, Ihsan; Saydam, Guray; Sahin, Fahri; Vural, Filiz; 34057336
    Objective: Although inhibition of the complement system at different steps is a promising therapy modality in patients with paroxysmal nocturnal hemoglobinuria (PNH), allogeneic hematopoietic stem cell transplantation (HCT) is still the only curative therapy, especially for patients with intractable hemolysis or bone marrow failure. The aim of this study is to evaluate the outcomes of allogeneic HCT in PNH patients with aplastic anemia (PNH-AA) or without. Materials and Methods: Thirty-five PNH/PNH-AA patients who were treated with allogeneic HCT in 10 transplantation centers in Turkey were retrospectively analyzed. Results: Sixteen (45.7%) and 19 (54.3%) patients were diagnosed with classical PNH and PNH-AA, respectively. The median age of the patients was 32 (18-51) years. The 2-year overall survival (OS) rate and rate of graft-versus-host disease-free, failure-free survival (GFFS) was 81.2% and 78.1%, respectively. The 2-year OS in cases of classical PNH and PNH-AA was 81.3% and 79.9%, respectively (p=0.87), and 2-year GFFS in cases of PNH and PNH-AA was 79% and 76% (p=0.977), without statistical significance. The OS and GFFS rates also did not differ between transplantations with matched sibling donors (MSDs) and matched unrelated donors (MUDs). Conclusion: Allogeneic HCT with MSDs or MUDS is a good option for selected patients with classical PNH and PNH-AA. In particular, patients with debilitating and refractory hemolysis and patients with bone marrow failure might form an excellent group of candidates for allogeneic HCT.
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    Incidence and risk factors for hepatic sinusoidal obstruction syndrome after allogeneic transplantation: Retrospective multicenter study of Turkish hematology research and education group (THREG), updated data
    (2019) Soyer, Nur; Gunduz, Mehmet; Tekgunduz, Emre; Deveci, Burak; Ozdogu, Hakan; Sahin, Handan Haydaroglu; Turak, Esra Ermis; Okay, Mufide; Kuku, İrfan; Hindilerden, Ipek Yonal; Topcuoglu, Pervin; Altuntas, Feviz; Karadogan, Ihsan; Pehlivan, Mustafa; Unal, Ali; Goker, Hakan; Erkurt, Mehmet Ali; Besisik, Sevgi Kalayoglu; Vural, Filiz
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    Prognostic Factors for Survival of Elderly Patients with Acute Myeloid Leukemia after Intensive Chemotherapy Validation of 3 Popular Prognostic Models
    (2014) Koca, Ebru; Halacoglu, Aysun; Malkan, Umit Yavuz; Arica, Deniz; Karakus, Sema; Goker, Hakan; Haznedaroglu, Ibrahim C.; Sayinalp, Nilgun; Buyukasik, Yahya; https://orcid.org/0000-0002-7566-4456; https://orcid.org/0000-0001-6055-6404; https://orcid.org/0000-0001-5444-4895; W-8713-2019; HZJ-4538-2023; J-2796-2019