Hilmi Atay
Ondokuz Mayıs University
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Featured researches published by Hilmi Atay.
Hematology | 2013
Burak Uz; Yahya Buyukasik; Hilmi Atay; Engin Kelkitli; Mehmet Turgut; Ozlen Bektas; Eylem Eliacik; Ayse Isik; Salih Aksu; Hakan Goker; Nilgun Sayinalp; Osman Özcebe; Ibrahim C. Haznedaroglu
Abstract Objectives The validity of the three currently used chronic myeloid leukemia (CML) scoring systems (Sokal CML prognostic scoring system, Euro/Hasford CML scoring system, and the EUTOS CML prognostic scoring system) were compared in the CML patients receiving frontline imatinib mesylate. Patients and methods One hundred and fourty-three chronic phase CML patients (71 males, 72 females) taking imatinib as frontline treatment were included in the study. The median age was 44 (16–82) years. Median total and on-imatinib follow-up durations were 29 (3.8–130) months and 25 (3–125) months, respectively. Results The complete hematological response (CHR) rate at 3 months was 95%. The best cumulative complete cytogenetic response (CCyR) rate at 24 months was 79.6%. Euro/Hasford scoring system was well-correlated with both Sokal and EUTOS scores (r = 0.6, P < 0.001 and r = 0.455, P < 0.001). However, there was only a weak correlation between Sokal and EUTOS scores (r = 0.2, P = 0.03). The 5-year median estimated event-free survival for low and high EUTOS risk patients were 62.6 (25.7–99.5) and 15.3 (7.4–23.2) months, respectively (P < 0.001). This performance was better than Sokal (P = 0.3) and Euro/Hasford (P = 0.04) scoring systems. Overall survival and CCyR rates were also better predicted by the EUTOS score. Discussion EUTOS CML prognostic scoring system, which is the only prognostic system developed during the imatinib era, predicts European LeukemiaNet (ELN)-based event-free survival better than Euro/Hasford and Sokal systems in CML patients receiving frontline imatinib mesylate. This observation might have important clinical implications.
Acta Haematologica | 2013
Yahya Buyukasik; Kadir Acar; Engin Kelkitli; Burak Uz; Songul Serefhanoglu; Evren Ozdemir; Merve Pamukçuoğlu; Hilmi Atay; Ozlen Bektas; Gülsan Türköz Sucak; Mehmet Turgut; Salih Aksu; Münci Yağcı; Nilgun Sayinalp; Osman Özcebe; Hakan Goker; Ibrahim C. Haznedaroglu
Treatment of acute lymphoblastic leukemia is unsatisfactory in adults due to disease and patient-related factors and probably because adult chemotherapy regimens are weaker than pediatric protocols. Worries about inadequacy of adult regimens urged many hematologists, including us, to reconsider their routine treatment practices. In this retrospective multicenter study, we aimed to evaluate results of hyper-CVAD treatment in comparison to other intensive protocols. All patients aged ≤65 years who were commenced on intensive induction chemotherapy between 1999 and 2011 were included in the study. Sixty-eight of 166 patients received hyper-CVAD, 65 were treated with CALGB-8811 regimen and 33 with multiple other protocols. Limited number of patients who were treated with other intensive protocols and mature B-acute lymphoblastic leukemia cases who were mostly given hyper-CVAD were eliminated from the statistical analyses. In spite of a favorable complete remission rate (84.2%), overall (26.3 vs. 44.2% at 5 years, p = 0.05) and disease-free (24.9 vs. 48.2%, p = 0.001) survival rates were inferior with hyper-CVAD compared to CALGB-8811 due to higher cumulative nonrelapse mortality risk (29.7 vs. 5.9%, p = 0.003) and no superiority in cumulative relapse incidence comparison (45% for both arms, p = 0.44). Hyper-CVAD, in its original form, was a less favorable regimen in our practice.
Turkish Journal of Hematology | 2013
Fahri Şahin; Guray Saydam; Melda Cömert; Burak Uz; Esra Turan; İpek Yönal; Hilmi Atay; Engin Keltikli; Mehmet Turgut; Mustafa Pehlivan; Meltem Olga Akay; Emel Gürkan; Semra Paydas; Selda Kahraman; Fatih Demirkan; Onur Kırkızlar; Seval Akpinar; Gülsüm Emel Pamuk; Muzaffer Demir; Hasan Mücahit Özbaş; Mehmet Sonmez; Mine Gültürk; Ayse Salihoglu; Ahmet Emre Eskazan; Cem Ar; Handan Haydaroğlu Şahin; Şeniz Öngören; Zafer Baslar; Yildiz Aydin; Mustafa Nuri Yenere
Objective: here have been tremendous changes in treatment and follow-up of patients with chronic myeloid leukemia (CML) in the last decade. Especially, regular publication and updating of NCCN and ELN guidelines have provided enermous rationale and base for close monitorization of patients with CML. But, it is stil needed to have registry results retrospectively to evaluate daily CML practices. Materials and Methods: In this article, we have evaluated 1133 patients’ results with CML in terms of demographical features, disease status, response, resistance and use of second-generation TKIs. Results: The response rate has been found relatively high in comparison with previously published articles, and we detected that there was a lack of appropriate and adequate molecular response assessment. Conclusion: We concluded that we need to improve registry systems and increase the availability of molecular response assessment to provide high-quality patient care. Conflict of interest:None declared.
Case reports in hematology | 2014
Engin Kelkitli; Hilmi Atay; Levent Yildiz; Ahmet Bektas; Mehmet Turgut
Mantle cell lymphoma (MCL) is a mature B-cell non-Hodgkin lymphoma. After the (11;14) translocation was identified as its constant finding in 1992, MCL was recognized as a separate subgroup of non-Hodgkin lymphoma (NHL). In MCL, extranodal involvement may be observed in the bone marrow, the spleen, the liver, and the gastrointestinal system (GIS). Cases of MCL that present with a massive and solitary rectal mass are rare in the literature. In this case report, our aim was to present an MCL patient with a rarely observed solitary rectal involvement mimicking rectal carcinoma and to discuss treatment options for this patient.
Asian Cardiovascular and Thoracic Annals | 2015
Hilmi Atay; Engin Kelkitli; Muhammed Okuyucu; Levent Yildiz; Mehmet Turgut
Castleman’s disease is a rarely observed lymphoproliferative disease. In the literature, various signs and symptoms of the disease have been reported; one of these is secondary cardiac tamponade. We describe the case of a 41-year-old man who developed cardiac tamponade during examination, and who was later diagnosed with Castleman’s disease, based on his lymph node biopsies.
Turkish Journal of Hematology | 2014
Nil Guler; Engin Kelkitli; Hilmi Atay; Dilek Erdem; Hasan Alacam; Yüksel Bek; Düzgün Özatlı; Mehmet Turgut; Levent Yildiz; Idris Yucel
Objective: Increased risk for non-Hodgkin lymphoma (NHL) is associated with infections and environmental agents. We hypothesized that these factors chronically trigger the T helper-2 (Th2) pathway and result in lymphoma. We investigated the role of the Th2 pathway by exploring the relationships between components of the Th2 pathway, interleukin (IL)-10, IL-4, immunoglobulin E (IgE), and eosinophils, and prognostic markers of NHL. Materials and Methods: Thirty-one NHL patients and 27 healthy controls were enrolled. IL-10, IL-4, IgE, and eosinophils were measured. IL-4 and IL-10 were analyzed with the enzyme amplified sensitivity immunoassay method. Results: High IL-10 levels were correlated with several poor prognostic features, short early survival, and lymphopenia. There was a positive correlation between albumin and IL-4 levels and a negative correlation between IL-10 and albumin. There was no relationship related with eosinophils and IgE. We found remnant increased IL-4, which could be a clue for the triggering of the Th2 pathway in the background. Conclusion: There is a need for differently designed studies to detect the place of the Th2 pathway in NHL.
The Pan African medical journal | 2014
Hilmi Atay; Engin Kelkitli; Mehmet Turgut
Tuberculosis remains a worldwide health problem causing morbidity and mortality. Abdominal tuberculosis is a rare form of the disease. Abdominal form of tuberculosis can mimic other non-infectious diseases. In this report, we presented an abdominal tuberculosis presenting with an intra-abdominal mass lesion and multiple lymphadenopathies that mimics lymphoma.
Annals of Hematology | 2014
Engin Kelkitli; Hilmi Atay; Fatih Çilingir; Nil Guler; Yuksel Terzi; Düzgün Özatlı; Mehmet Turgut
International Journal of Hematology and Oncology | 2015
Umit Yavuz Malkan; Salih Aksu; Sude Hatun Aktimur; Hilmi Atay; Ozlen Bektas; Yahya Buyukasik; Haluk Demiroglu; Eylem Eliacik; Mert Esme; Abdullah Hacihanefioglu; Gursel Gunes; Hakan Goker; Sema Karakus; Saadettin Kilickap; Ebru Koca; Osman Özcebe; Nilgun Sayinalp; Mehmet Turgut; Ibrahim C. Haznedaroglu
International Journal of Hematology and Oncology | 2012
Salih Aksu; F. Sahin; Burak Uz; S. A. Yavuz; Hilmi Atay; E. Kelkitli; Mehmet Turgut; M. Pehlivan; Meltem Olga Akay; E. Guray; M. Demir; S. Kahraman; Fatih Demirkan; S. Paydas; Guray Saydam; Ibrahim C. Haznedaroglu