Hakki Onur Kirkizlar

Dr. Hakki Onur Kirkizlar

orcid

Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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6 April 2020 in Scientific Reports
Verified
Journal Article
Open access
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MBMehmet Baysal
Mehmet Baysal
UDUfuk Demirci
Ufuk Demirci
EUElif Umit
Elif Umit
HKHakki Onur Kirkizlar
Hakki Onur Kirkizlar
EAEmine Ikbal Atli
Emine Ikbal Atli
ADAhmet Muzaffer Demir
Ahmet Muzaffer Demir
Risk assessment in newly diagnosed multiple myeloma patients (NDMM) is the first and the most crucial determinant of treatment. With the utilization of FISH analysis as a part of routine practice, high risk Multiple Myeloma (MM) is defined as having at least one of the mutations related with poor prognosis including; t(4;14) t(14;16), t(14;20), del 17p, p53 mutation, gain 1q and del 1p. M-Smart MM risk stratification guideline by Mayo Clinic has proposed a concept similar to high grade lymphomas. Having two of the high risk genetic abnormalities were defined as double hit MM and having any three as triple hit MM. Based on these definitions which may bring a much more clinically relatable understanding in MM prognosis, we aimed to assess our database regarding these two concepts and their probable significance in terms of outcome and prognosis. We retrospectively evaluated 159 newly diagnosed multiple myeloma patients and their clinical course. Among these patients; twenty-four patients have one high risk determinant and also seven and two patients were classified as double hit MM and triple hit MM respectively. Overall survival (OS) of the patients with double hit MM was 6 months, 32.0 months for patients with single high risk abnormality and 57.0 months for patients with no high risk abnormality. Univariate analysis showed that Double Hit and Triple Hit MM is a predictive of low OS. Hazard Ratio of patients with one high risk abnormality was 1.42, double-hit MM patients was 5.55, and triple-hit MM patients was 7.3. Despite the development of novel drugs and their effects of prolonging survival, the treatment has not been individualized. Understanding the biology of each patient as a unique process will be the success of the treatment. As it is known that some MM patients harbor high risk genetic abnormalities according to FISH analysis, we can continue the argument that some patients bring an even higher risk and that can be defined as double or triple hit MM.

19 March 2019 in Journal of Oncology Pharmacy Practice
Verified
Journal Article
Open access
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EUElif G Umıt
Elif G Umıt
MBMehmet Baysal
Mehmet Baysal
VBVolkan Bas
Volkan Bas
IAIsmail Asker
Ismail Asker
HKHakki Onur Kirkizlar
Hakki Onur Kirkizlar
ADAhmet M Demır
Ahmet M Demır
Purpose: Multiple myeloma is a chronic, uncurable hematological cancer with the involvement of multiple organ systems. As a disease affecting older patients, the treatment of multiple myeloma should be based on individual patient characteristics. Polypharmacy is an increasing problem in the care of older patients and in patients with multiple myeloma, polypharmacy is almost inevitable. We aimed to evaluate the applicability of polypharmacy definitions and the relation of polypharmacy with disease outcomes in patients with multiple myeloma. Methods: Eighty patients older than 65 years and diagnosed with multiple myeloma were retrospectively enrolled. Patient files, prescriptions, evaluations for polypharmacy were determined according to Beers and START/STOPP criteria. Outcomes were recorded from files in terms of fractures, autonomous neuropathy, and renal functions. Results: Polypharmacy with ≥4 drugs was observed in 65 patients while polypharmacy with ≥5 drugs was observed in 51 patients. Autonomous neuropathy, polypharmacy with more than four or five medications, and use of multiple medications in the same category were related with poor ECOG performance status in women, while prolonged use of benzodiazepines and central nervous system (CNS) affecting drugs and inappropriate polypharmacy were more frequent in men with poor ECOG performance status. The majority of patients aged 75–84 years were observed to use inappropriate polypharmacy. Autonomous neuropathy and fall risk were observed to be significantly related with inappropriate polypharmacy. Conclusions: Drugs affecting balance and perception should be reconsidered in patients with multiple myeloma.

6 February 2019 in Turkish Journal of Hematology
Verified
Journal Article
Open access
MBMehmet Baysal
Mehmet Baysal
EÜElif Ümit
Elif Ümit
HKHakki Onur Kirkizlar
Hakki Onur Kirkizlar
AÖAli Caner Özdöver
Ali Caner Özdöver
ADAhmet Muzaffer Demir
Ahmet Muzaffer Demir
Hereditary hemorrhagic telangiectasia (HHT) is a rare autosomal dominantly inherited disorder characterized by bleeding episodes. These episodes tend to happen spontaneously and reduce the quality of life. Patients are often unresponsive to local measures. With the pathophysiological role of angiogenesis in HHT, antiangiogenic drugs including thalidomide are used to control bleeding episodes. In our study, we evaluated 6 patients with HHT, calculating their Epistaxis Severity Score (ESS) and performing a quality of life assessment with the 36-Item Short Form Health Survey Questionnaire (SF-36), and we studied the alterations of these evaluations with thalidomide treatment. Three patients were male and three were female. Mean age was 60.50 years. No side effects were observed during the treatment period. Improvements of certain SF-36 dimensions including physical functioning, physical component summary, and mental component summary and of the ESS were observed after treatment. Thalidomide may be effective to control bleeding episodes with a reasonable tolerance profile in patients with HHT.

1 December 2020 in Leukemia Research
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Journal Article
Closed access
TKTugcan Alp Kirkizlar
Tugcan Alp Kirkizlar
EAEMİN HALİS Akalin
EMİN HALİS Akalin
HKHakki Onur Kirkizlar
Hakki Onur Kirkizlar
FÖFahir Özkalemkaş
Fahir Özkalemkaş
VOVildan Ozkocaman
Vildan Ozkocaman
RARıdvan Ali
Rıdvan Ali

1 August 2020 in Clinical Lymphoma Myeloma and Leukemia
Verified
Journal Article
Closed access
HKHakki Onur Kirkizlar
Hakki Onur Kirkizlar
TKTugcan Alp Kirkizlar
Tugcan Alp Kirkizlar
EUElif Gulsum Umit
Elif Gulsum Umit
IAIsmail Asker
Ismail Asker
MBMehmet Baysal
Mehmet Baysal
ADAhmet Muzaffer Demir
Ahmet Muzaffer Demir

5 September 2020 in European Journal of Cancer Care
Verified
Journal Article
Closed access
PDF file
EUElif G. Umit
Elif G. Umit
UKUlku Korkmaz
Ulku Korkmaz
MBMehmet Baysal
Mehmet Baysal
SGSedanur Karaman Gulsaran
Sedanur Karaman Gulsaran
VBVolkan Bas
Volkan Bas
ADAhmet Muzaffer Demir
Ahmet Muzaffer Demir