241 results on '"M Erman"'
Search Results
2. Trace Element Levels in Naturally Infected Dogs with Giardiasis
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Erdoğan, Songül, Ercan, Alev Meltem, Parkan Yaramis, Çağla, Bayrakal, Alper, Ayan, Adnan, Erdoğan, Hasan, Tarhan, Duygu, Ural, Kerem, and Or, M. Erman
- Published
- 2021
3. Renal-Pulsed Wave Doppler Ultrasonographic Findings of Normal Turkish Angora Cats
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Remzi Gonul*, Lora Koenhemsi, Alper Bayrakal, Taner Bahceci, M. Erman and Abdulkadir Uysal
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Doppler ,Pulsatility index ,Renal resistive index ,Turkish angora cats ,Animal culture ,SF1-1100 ,Veterinary medicine ,SF600-1100 - Abstract
Both resistive index (RI) and pulsatility index (PI) estimate vascular resistance within an artery. But, there are only few studies reporting normal values of the renal RI and PI in healthy cats but no study could be found with regard to Turkish Angora breed of cats. So, we decided to determine the normal values of intra-renal RI and PI in non-sedated, non-hypertensive clinically normal Turkish Angora breed cats. For this purpose 20 each of mixed-breed and Turkish Angora breed, different ages and sex healthy cats constituted the study groups. At the result of the pulsed wave doppler ultrasonographic examinations mean values for RI and PI were 0.61±0.04 and 0.97±0.17 for mixed-breed cats; 0.60±0.07 and 1.16±0.34 for Turkish Angora breed cats were recorded, respectively. No significant differences were noted between the groups. At the result, we determined that, they were in normal limits as previously described in clinically healthy Turkish Angora breed of cats.
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- 2011
4. Evaluation of Low Testesterone Levels in Male Dogs with Alopecia
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Lora Koenhemsi, Banu Dokuzeylül, M. Erman Or, and Remzi Gönül
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Veterinary ,alopesi,endokrinopatiler,hipoandrojenizm ,Veteriner Hekimlik ,General Medicine ,alopecia,endocrinopaties,hypoandrogenism - Abstract
Hypoandrogenism is one ofthe reasons for alopecia in humans, however it is rarely detected in dogs andcats. To the best of the authors’ knowledge, this is the first retrospectivereport describing only signalment and clinical manifestations ofhypoandrogenism in male dogs. A retrospective review of the medical records of76 male dogs of different breeds and ages with hypoandrogenism from 1999 to2017 were included to the study. The most common clinical signs were alopeciathat started from the tail to the neck and hyperpigmentation. This studyidentified a variety of cutaneous lesions in male dogs with hypoandrogenism. Asthere is relatively little published information describing hypoandrogenism inanimals, further studies are required to understand the importance of these endocrinopathies., Kedi ve köpeklerde nadirolarak saptanmasına rağmen hipoandrojenizm insanlardaki alopesininnedenlerinden birisidir. Yazarların bilgisine göre, bu çalışma erkek köpeklerdesadece hipoandrojenizmin anamnez ve klinik belirtilerini açıklayan ilkretrospektif rapordur. 1999 ile 2017 yılları arasında farklı ırkve yaş gruplarında 76 erkek köpeğin tıbbi kayıtları retrospektif olarakincelendi ve çalışma kapsamında değerlendirildi. En sık görülen klinikbulgular, kuyruktan boyun bölgesine kadar uzayan alopesi ve hiperpigmentasyondu.Bu çalışma, erkek köpeklerde hipoandrojenizmi olan çeşitli kutanöz lezyonlarıtanımlamıştır. Hayvanlarda hipoandrojenizmi tanımlayan nispeten az yayınlanmışbilgi olduğu için, bu endokrinopatilerin önemini anlamak için daha fazlaçalışmaya ihtiyaç vardır.
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- 2018
5. Short term follow up results of the first human uterus transplantation from cadaver
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Akar, M. Erman, Özkan, O., Erdoğan, O., Cincik, Mehmet, Mutlu, D., Gunseren, F., Pestereli, E., Kocak, H., Dinckan, A., Hadimioglu, N., Suleymanlar, G., and Maltepe Üniversitesi, Tıp Fakültesi
- Abstract
Study Objective: To present the short term follow up results of the first human uterus transplantation from cadaver. Design: Case report. Setting: University hospital. Patients: A 19 year old female patient with complete mullerian agenesis presented with primary amenorrhea and inability to achieve intercourse. Intervention: Vaginal reconstruction with jejunum graft, in vitro fertilization and embryo vitrification procedures were performed. Following immunocompatibility tests for the transplantation, the patient was elected as the most suitable recipient for the uterus. The cadaver uterus was screened for the presence of any structural abnormalities and infections preoperatively. Uterus transplantation procedure consisted of revascularisation, reanastomoses of the right and left uterine arteries and veins(ishemia time for five hours), fixation of the uterovesical flap to the preexisting urinary bladder, suspension of the uterosacral ligament to sacrum. Measurements and Main Results: Early postoperative course was uneventful. Intraoperative and postoperative induction immunosuppressive therapy with thymoglobulin, tacrolimus, mycophenolate mofetil and prednisone was well tolerated. Maintanance immunosuppressive therapy with tacrolimus, mycophenolate mofetil and prednisone and prophylactic antiviral, antibacterial therapy was initiated. Bilateral uterine artery doppler ultrasonography showed good perfusion. We observed no signs of rejection and infection confirmed with laboratory and cytological findings. She has had six menstrual cycles since the operation. Conclusion: We have described restoration of menstrual cycles following uterus transplantation which might be a promising option to restore fertility in this selected group of patients.
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- 2012
6. Experimental and theoretical studies on electrochemical synthesis of poly(3-amino-1,2,4-triazole)
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Birgül Yazıcı, M. Erman Mert, Gülfeza Kardaş, Başak Doğru Mert, and Çukurova Üniversitesi
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Thermogravimetric analysis ,Quantum theoretical calculation ,Analytical chemistry ,General Physics and Astronomy ,chemistry.chemical_element ,Electropolymerization ,Surfaces and Interfaces ,General Chemistry ,Condensed Matter Physics ,Electrochemistry ,Surfaces, Coatings and Films ,Atomic force microscopy ,chemistry ,Poly(3-amino-1,2,4-triazole) ,Thermal stability ,Cyclic voltammetry ,Fourier transform infrared spectroscopy ,Platinum ,Spectroscopy ,HOMO/LUMO - Abstract
The electrochemical synthesis of poly(3-amino-1,2,4-triazole) (PATA) on the platinum (Pt) electrode was achieved in ammonium oxalate solution by cyclic voltammetry technique. The conductivity of film was measured with four probe technique, the surface morphology was monitored with atomic force microscopy (AFM) and characterization was achieved by Fourier transform infrared spectroscopy (FT-IR) and UV-vis spectroscopy techniques. The thermal stability of polymer has also been investigated by the means of thermogravimetric analysis (TGA). The electrochemical stability of Pt/PATA was investigated in different buffer solutions. The quantum theoretical calculations employed and some parameters (dipole moment, E HOMO , E LUMO ) were determined. © 2012 Elsevier B.V.
- Published
- 2012
7. Experimental and theoretical investigation of 3-amino-1,2,4-triazole-5-thiol as a corrosion inhibitor for carbon steel in HCl medium
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M. Erman Mert, Başak Doğru Mert, Birgül Yazıcı, Gülfeza Kardaş, and Çukurova Üniversitesi
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Materials science ,Carbon steel ,General Chemical Engineering ,B. Electrochemical calculation ,Inorganic chemistry ,General Chemistry ,B. EIS ,engineering.material ,Corrosion ,Dielectric spectroscopy ,Metal ,Corrosion inhibitor ,chemistry.chemical_compound ,Adsorption ,chemistry ,visual_art ,visual_art.visual_art_medium ,engineering ,General Materials Science ,3-Amino-1,2,4-triazole ,HOMO/LUMO ,A. Steel ,C. Acid corrosion - Abstract
The inhibition effect of 3-amino-1,2,4-triazole-5-thiol (3ATA5T) was investigated in 0.5. M HCl on carbon steel (CS) by electrochemical impedance spectroscopy and potentiodynamic measurements at various concentrations and temperatures. Results showed that the correlation between experimental (inhibition efficiencies, ?. Gads, Ea) and quantum calculation parameters (dipole moment, EHOMO, ELUMO). The high inhibition efficiency was declined in terms of strongly adsorption of protonated inhibitor molecules on the metal surface and forming a protective film. © 2011 Elsevier Ltd. This study has been financially supported by the Cukurova University research fund . The authors are greatly thankful to Çukurova University Research fund . The authors also thank to The Scientific and Technical Research Council of Turkey (TUBITAK).
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- 2011
8. The role of Spirulina platensis on corrosion behavior of carbon steel
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M. Erman Mert, Başak Doğru Mert, Gülfeza Kardaş, Birgül Yazıcı, and Çukurova Üniversitesi
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Materials science ,Carbon steel ,Thin films ,Analytical chemistry ,engineering.material ,Condensed Matter Physics ,Corrosion ,law.invention ,Dielectric spectroscopy ,Surfaces ,Optical microscope ,law ,Electrode ,engineering ,General Materials Science ,Thin film ,Polarization (electrochemistry) ,Electrochemical techniques ,Current density ,Nuclear chemistry - Abstract
The corrosion behavior of carbon steel (CS) was investigated in 3.5% NaCl solution in the presence and absence of Spirulina platensis (SP) bacteria. For this purpose, the weight loss measurements, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization techniques were used. The counts of SP were monitored with UV-VIS spectrophotometer, optical microscope and the dissolved oxygen (DO) was determined in all solutions. The morphology of the electrodes surfaces were characterized with SEM images. The results show that, SP decreased the corrosion rate and the current density values of CS; the corrosion potential was shifted to nobler values, the polarization resistance values were increased. All parameters reveal that the SP effectively protected CS against corrosion and reduced its corrosion rate in 3.5% NaCl solution. © 2011 Elsevier B.V. All rights reserved. The authors are greatly thankful to Cukurova University Research Fund and The Scientific and Technical Research Council of Turkey (TUBITAK) for financial support.
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- 2011
9. P-681: Obesity and semen quality
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Cıncık, Mehmet, Akar, M. Erman, Bedir, S., Ergür, A. R., Yazıcı, M., Selam, B., Maltepe Üniversitesi, Tıp Fakültesi, and Cıncık, Mehmet
- Abstract
Objective We aimed to compare semen quality and serum reproductive hormones in obese and non obese men. Design Prospective Materials and methods From April 2004 to April 2006, 21 obese men and 42 non obese men were included in the study. Men with body mass index(BMI=W(kg)/L2(m)) of more than 35 were included in the obese group. Men with BMI between 20 and 25 were included in the non obese group. Semen volume, sperm concentration(in milliliters), sperm concentration(in million per milliliter), percentage of motile spermatozoa , percentage of spermatozoa with normal morphology, total sperm count(in million) and serum reproductive hormones were evaluated. Results Serum FSH and testesterone levels were found to be significantly higher in the non obese control group. Serum steroid hormone binding globulin(SHBG) was significantly lower in the obese group which correlated with elevated bioavailability of both testesterone and estradiol in the obese group. Serum luteinizing hormone levels were no different suggesting that free testerone levels were unchanged. Percentages of normal spermatozoa were reduced significantly among men with high BMI(p
- Published
- 2006
10. Bacterial species isolated from cats with lower urinary tract infection and their susceptibilities to cefovecin.
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Dokuzeylül, Banu, Kahraman, Beren Başaran, Bayrakal, Alper, Siğirci, Belgi Diren, Çelik, Baran, Ikiz, Serkan, Kayar, Abdullah, and OR, M. Erman
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BACTERIAL communities ,URINARY tract infections ,MICROBIAL sensitivity tests - Abstract
Background: The aim of this study was to determine the bacterial species recovered from 61 cats with lower urinary tract infection (LUTI), and their susceptibility to cefovecin in vitro. Results: The clinical signs and final clinical diagnosis for cats with confirmed LUTI were also reported. After physical examination of the cats, urine samples including ≥5-6 leucocytes in microscopic evaluation were cultured using bacteriological techniques. The isolates were identified by conventional microbiological methods and tested for in vitro susceptibility using the Kirby-Bauer disc diffusion method recommended by the Clinical Laboratory Standards Institute. Bacterial growth was observed in 16 of 61 urine samples. Antimicrobial susceptibility tests showed that 13 of 16 (81%) isolates were susceptible to cefovecin. The most frequently isolated bacterium from cats with signs of lower urinary tract infection, was Escherichia coli. Conclusion: Cefovecin was found to be effective in cats with LUTI. Because cefovecin is a new antimicrobial agent in veterinary medicine, there are only few studies about urine culture of cats with LUTI. It is the first study on in vitro activity of cefovecin against bacterial isolates from cats with lower urinary infections in Istanbul, Turkey. [ABSTRACT FROM AUTHOR]
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- 2016
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11. 35 Cystic fibrosis transmembrane regulator mutations in Turkish patients with cystic fibrosis
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Bingol, A., Ertosun, M.G., Artan, R., Yilmaz, A., Mihci, E., Guzel, B.N., Akar, M. Erman, Mendilcioglu, I., Simsek, M., Demir, D., Pehlivanoglu, S., Yilmaz, E., and Alper, O.M.
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- 2014
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12. Beyaz Kas Hastalıklı Kuzularda Eritosit Glutasyon Perokidaz (GSH-Px) Aktivitesi ve Bazı Serum Parametrelerinin Diagnostik Önemi.
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Or, M. Erman, Dodurka, H. Tamer, and Kayar, Abdullah
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MUSCLE diseases , *LAMBS , *SHEEP diseases , *GLUTATHIONE , *PEROXIDASE , *SERUM - Abstract
Deals with a study which determined the diagnostic importance of erythrocyte glutathione peroxidase activity in lambs with white muscle disease and the changes in some serum parameters in healthy and white muscle diseased lambs. Materials and methods; Results; Conclusion.
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- 2003
13. P931 Fluid overload during operative hysteroscopy: a case report
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Akar, M. Erman, Kayacan, N., Ertugrul, F., and Karslı, B.
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- 2009
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14. O273 Jejunum segment use for vaginal reconstruction: clinical experience in twenty-two patients
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Akar, M. Erman, Özkan, Ö., Çolak, T., and Kayacan, N.
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- 2009
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15. Landscape and historical mapping of natural and cultural complexes of Central Russia.
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V. A., Nizovtsev and N. M., Erman
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LANDSCAPES , *CARTOGRAPHY , *MAP design , *GEOGRAPHIC information systems - Abstract
Historical mapping of landscapes shows the characteristics of the relationship between man and landscape in certain chronosections and gives the opportunity to analyze and reconstruct the dynamics of nature management, environmental situations and the anthropogenic evolution of landscapes. An analysis of the development of the relationship between man and specific landscapes, studies of the dynamics of nature management of the old habitable territories are currently impossible without landscape-historical mapping with the use of GIS technologies. These technologies make it possible to carry out more quickly and efficiently a cross-spectrum analysis of multi-temporal and multi-scale historical maps and to quantitatively describe the dynamics of land use of specific landscape complexes of various taxonomic ranks, up to such types as tracts and sub-tracts, at certain historical intervals. The new landscapehistorical geographic information system that we are creating allows us to get a clear picture of the functioning of territories in different historical periods, on the basis of a landscape-historical analysis of the territory, involving the study of the dynamics of the landscape and economic activity within it, and the compilation of a series of maps for various chronosections. The use of GIS technology allows you to simulate the dynamics of the human-landscape interaction in a specific territory of a particular region. This is achieved by displaying changes in settlement systems and environmental management systems against the background of landscape conditions characteristic of the reflected period. The main subjects of such research are not only natural landscape or natural-anthropogenic complexes, but also landscapeeconomic systems and landscape-historical complexes, reflecting the economic or spiritual activity of man in specific landscape conditions in specific historical periods. These key areas for research are justified by the historical value and significance of the territory, the diversity of natural conditions and the presence of an almost complete set of landscape complexes of different hierarchical levels characteristic of the forest zone of the Russian Plain. The selection of the key areas for the research is justified by the historical value and significance of the territory, the diversity of natural conditions and the presence of an almost complete set of landscape complexes of different hierarchical levels characteristic of the forest zone of the Russian Plain. Such territories are: the historical center of Moscow - the Kremlin, State Borodino War and History Museum and Reserve, the museum-reserves "Kolomenskoye" and "Tsaritsyno", the vicinity of ancient cities and settlements: Rurikovo Ancient Town, Gnezdovo, Radonezh, the historical centers of Smolensk and Veliky Novgorod and many others. The work was carried out at several hierarchical levels: local level for key areas, and regional level for the forest areas of the Russian Plain. A series of landscape-historical maps were compiled, including the actual landscape maps, maps of landscape-economic systems, of nature management, and of settlement systems. Landscape-historical GIS, including a series of maps of different times for the key areas, clearly reflect the economic activity at a certain historical stage in the specific natural conditions in which this activity took place. At the same time, all maps are compiled on a single scale, which makes it possible to produce not only a qualitative assessment, but also a quantitative analysis of the processes taking place. The most important result of multi-scale landscape-historical mapping of territories of a regional level may be the compilation of electronic landscape-historical atlases. Success has already been achieved in creating such an atlas for the territory of the Moscow region. Such an electronic landscape-historical atlas is regional in scope, comprehensive, thematic in content; its purpose is diverse: its individual blocks can be considered as scientific-reference, local historical, educational, tourist information resources. It is the first time that several hierarchical levels of mapping and analysis of depicted objects are presented in an atlas. [ABSTRACT FROM AUTHOR]
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- 2021
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16. Urinary Calculus in A Guinea Pig.
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DOKUZEYLÜL, Banu, HAKTANIR, Damla, KOENHEMSİ, Lora, KAYAR, Abdullah, and OR, M. Erman
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GUINEA pigs ,URINARY calculi ,CALCIUM salts ,PALPATION ,CALCIUM carbonate ,DISEASES - Abstract
Copyright of Kafkas Universitesi Veteriner Fakultesi Dergisi is the property of University of Kafkas, Faculty of Veterinary Medicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2013
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17. CARDIAC PROBLEMS OBSERVED IN DOGS WITH HEPATIC AND RENAL INSUFFICIENCY.
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Gonul, Remzi, Kayar, Abdullah, Koenhemsi, Lora, Ozkan, Burcak, and Or, M. Erman
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The article presents information on a study which investigated the cardiac problems observed in hepatic or renal insufficiency in dogs. It discusses cardiac insufficiencies that can occur as a result of hepatic and renal insufficiency. Several clinical and laboratory examinations were conducted to determine hepatic and renal insufficiency in dogs. It reveals the hematological, biochemical and cardiac changes in dogs with hepatic and renal insufficiency. Changes in the blood pressure were determined oscilloscopically and the effects of these changes on cardiac performance were observed electrocardiographically.
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- 2009
18. Concomitant Mycobacterium tuberculosisand Aspergillus niger Infection in a Patient with Acute Myeloid Leukemia.
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D.Y. Aksoy, A. Turker, M.K. Altundag, H. Abali, M. Durusu, M. Erman, A. Uner, A.A. Sungur, S. Unal, and O. Uzun
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ASPERGILLUS ,IMMUNOSUPPRESSION ,HIV-positive persons ,THERAPEUTICS ,TUBERCULOSIS ,ASPERGILLUS niger - Abstract
Primary cutaneous infection by Aspergillus spp. is an uncommon form of aspergillosis in patients with severe immunosuppression, e.g. patients with HIV infection or hematological malignancies. Disruption of the dermal integrity by trauma or maceration, followed by colonization of the wound by Aspergillus spp. creates a suitable environment for cutaneous infection. Despite aggressive therapy with amphotericin, primary cutaneous aspergillosis can lead to disseminated disease with fatal consequences. Tuberculosis is another rare infection in patients with hematological malignancies, but when present it is usually disseminated. We present a 46-year-old woman with acute myeloid leukemia who developed concomitantly Mycobacterium tuberculosis and Aspergillus niger infection. Cutaneous aspergillosis was diagnosed during neutropenia after induction therapy, which later became disseminated disease during antifungal therapy. Tuberculosis infection was diagnosed in a scalene lymph node biopsy specimen. The patient achieved remission of her underlying disease and responded very well to antituberculous and antifungal therapy.Copyright © 2003 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]
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- 2003
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19. Spreading of non volatile liquids on smooth solid surfaces : role of long range forces
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Liliane Léger, L. Bosio, A. M. Guinet-Picart, C. Strazielle, M. Erman, Jean Daillant, J. J. Benattar, Dominique Ausserre, François Rieutord, Laboratoire Interfaces et Systèmes Electrochimiques (LISE), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
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Materials science ,Analytical chemistry ,silicone wafers ,02 engineering and technology ,01 natural sciences ,Surface tension ,symbols.namesake ,ellipsocontrast microscopic observations ,spatially resolved ellipsometry ,surface tension ,0103 physical sciences ,spreading parameter ,010306 general physics ,X rays reflectivity ,drops ,Range (particle radiation) ,wetting ,Solid surface ,polymeric effects ,021001 nanoscience & nanotechnology ,polydimethylsiloxane drops ,precursor film ,thin films ,long range forces ,Chemical physics ,[PHYS.HIST]Physics [physics]/Physics archives ,symbols ,van der Waals forces ,Wetting ,van der Waals force ,surface energies ,0210 nano-technology ,macroscopic drop - Abstract
We present an experimental investigation of the spreading of non volatile polydimethylsiloxane drops on smooth horizontal silicone wafers. We distinguish the macroscopic part of the drop which can be seen by bare eye (or through a microscope) from the microscopic part, or precursor film, which progressively extends like a thin liquid tongue (thickness smaller than 1 000 A) all around the drop. The macroscopic drop spreads independently of the spreading parameter, in opposition to the precursor film which appears deeply influenced by the surface energies. We have characterized this precursor film (both its profile and its time evolution) by complementary techniques such as ellipsocontrast microscopic observations, spatially resolved ellipsometry, X-rays reflectivity. The results will be compared with recent theoretical predictions, and specific polymeric effects will be emphasized.
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- 1988
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20. ASSESSMENT OF A MULTIPLE QUANTUM WELL AND A SUPERLATTICE STRUCTURE BY SPECTROSCOPIC ELLIPSOMETRY, ELECTROREFLECTANCE AND PHOTOREFLECTANCE MODULATION SPECTROSCOPY
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J.A. Cavailles, P. Frijlink, C. Alibert, M. Erman, C. Bouche, Centre d'Electronique et de Micro-optoélectronique de Montpellier (CEM2), and Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)
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Condensed Matter::Quantum Gases ,Chemistry ,business.industry ,Condensed Matter::Other ,Multiple quantum ,Superlattice ,General Engineering ,Analytical chemistry ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,[PHYS.HIST]Physics [physics]/Physics archives ,Spectroscopic ellipsometry ,Optoelectronics ,Modulation spectroscopy ,business - Abstract
A GaAlAs/GaAs multiple quantum well structure exhibiting a thickness gradient over the wafer surface has been analyzed using spectroscopic ellipsometry, electroreflectance and photoreflectance. Due to the sample non uniformity, we have been able to observe the continuous transition from multiple quantum well regime to superlattice regime.
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- 1987
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21. Landscape studies of ancient Russian cities on historic waterways.
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V A Nizovtsev and N M Erman
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- 2019
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22. Landscape and historical conditions for the emergence and formation of the city of Smolensk.
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V A Nizovtsev and N M Erman
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- 2019
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23. THE CLINICAL EFFICIENCY OF MINERASOL A NEW TRACE ELEMENT COMBINATION FOR COWS.
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Or, M. Erman, Kayar, Abdullah, Gonul, Remzi, Dokuzeylul, Banu, Kiziler, Ali Riza, Aydemir, Birsen, Aksu, Abdullah, Parkan, Cagla, Morkoc, Tamercan, and Barutcu, Bora
- Abstract
The article reports on a study of the impact of the clinical application of Minerasol, which is a hypertonic infusion solution that contains phosphate, calcium, sodium salts, magnesium, potassium, zinc trace elements, cobalt, iron and iodine. The study was conducted on 25 healthy cows in Istanbul, Turkey. Results indicated that there was a significant rise in levels of zinc and iron. On the other hand, there was no change in the levels of calcium, magnesium and copper, and in the hemogram parameters.
- Published
- 2010
24. P20.01: Peritoneal tuberculosis mimicking ovarian cancer.
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Akar, M. Erman, Sutcu, H., and Durmus, H.
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TUBERCULOSIS , *OVARIAN cancer - Abstract
An abstract of the research paper "Peritoneal Tuberculosis Mimicking Ovarian Cancer," by M. Erman Akar and colleagues is presented.
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- 2013
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25. Effectiveness of GnRH Antagonist Use in PCOS Patients With Repeated Premature LH Surge in Patients Undergoing IUI Cycles
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Taskin, O., Akar, M. Erman, Kursun, S., Salar, Z., Gunduz, T., and Uner, M.
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- 2005
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26. A Randomized Prospective Placebo-Controlled Study of Intravenous albumin vs. Hydroxyethyl Starch for the Prevention of Ovarian Hyperstimulation in an In-Vitro Fertilization Programme
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Gokmen, O., Ozcan, S., Akar, M. Erman, and Ugur, M.
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- 2005
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27. Immune Checkpoint Blockade Therapies Efficacy and Toxicity in Patients With Impaired Renal Function in Metastatic Bladder Cancer.
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Tural D, Arslan C, Selcukbiricik F, Olmez OF, Akar E, Erman M, Ürün Y, Erdem D, and Kilickap S
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- Humans, Male, Female, Aged, Middle Aged, Retrospective Studies, Treatment Outcome, Aged, 80 and over, Renal Insufficiency, Carcinoma, Transitional Cell drug therapy, Follow-Up Studies, Kaplan-Meier Estimate, Immune Checkpoint Inhibitors therapeutic use, Immune Checkpoint Inhibitors adverse effects, Urinary Bladder Neoplasms drug therapy, Urinary Bladder Neoplasms pathology, Glomerular Filtration Rate
- Abstract
Background: In this study, we reported the real-life results of data from impaired renal patients with urothelial carcinoma who were treated with ICTs., Methods: The patients were categorized into 3 different groups GFR ≥60mL/min (normal), 60mL/min-30mL/min (low), and less than 30 mL/min (very low) based on GFR. The primary endpoints were the overall response rate (ORR), overall survival (OS), duration of response with ICT, and safety. Median follow-up and OS were estimated by using the Kaplan-Meier method., Results: One hundred-five (60.3%) of patients were GFR normal, 26.4% were GFR low with 30mL/min-60mL/min, and 13.2% were very low group. ORR for GFR normal, low and very low groups were 36% (n = 38), 26% (n = 12) and %31 (7); P = .2, respectively. The median duration of response for GFR normal, low and very low groups were 47.2 months (95% CI, 24.5-51.4), 33.1 months (95% CI, 26.9-47), and 23.5 months (95% CI, 12.2-43.7); P = .01, respectively. The Median OS rate for GFR normal, low and very low groups were 11.9 (7.2-16.5) months, 4.7 (1.8-7.7) and 6.8 (1.1-13.6) months, P = .015, respectively. In addition, GFR <60 ml/min HR = 1.6; 95% CI 1.12-1.80; P = .02, maintained a significant association with OS in multivariate analysis., Conclusions: Long-term follow-up of real-world data confirms that the overall survival rate and durable response rate with ICT were higher in patients with GFR >60mL/min. On the other hand, we demonstrated that ICT was effective and a durable response seen in a group of patients with renal inpairement who did not have an effective systemic treatment option., Competing Interests: Disclosure The authors have stated that they have no conflicts of interest., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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28. Human exposure to heavy metals and possible public health risks via consumption of mussels M. galloprovincialis from the Albanian sea cost.
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Ozuni E, Andoni E, Castrica M, Balzaretti CM, Brecchia G, Agradi S, Curone G, Di Cesare F, Fehri NE, Luke B, Erman Or M, Akkaya E, Yavuz O, Menchetti L, Prendi L, Özsonacı NP, Ercan AM, Ateş F, and Miraglia D
- Abstract
Heavy metals in the marine environment are significant contaminants that readily bioaccumulate in the tissues of aquatic organisms, particularly in filter-feeding animals such as bivalve molluscs. Human exposure to elevated concentrations of heavy metals, including essential elements such as Fe, Cu, and Zn, through the consumption of seafood can lead to various pathological effects. Research has demonstrated that among bivalve molluscs, mussels are the most effective indicators for monitoring marine pollution. Consequently, this study focused on the species Mytilus galloprovincialis to evaluate the levels of Al, As, Cd, Cr, Cu, Fe, Mg, Ni, Pb, and Zn in the two primary harvesting areas of Albania and to assess the associated human health risks from mussel consumption. The results revealed a concerning situation, particularly for Pb and Cd, with average concentrations of 2.15 μg/g and 4.14 μg/g, respectively, significantly exceeding the limits established by Regulation (EC) No. 915/2023. The levels of the other investigated elements also raised concerns, as only half of them were within the dietary intake values recommended by scientific authorities for weekly consumption of 250 g of mussels., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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29. Efficacy of Systemic Treatments in Patients With Metastatic Lung Invasive Mucinous Adenocarcinoma.
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Demir T, Araz M, Moloney C, Hendem E, Koçak MZ, Erman M, Baş O, Köstek O, Sever N, Karakaya S, Zeynelgil E, Chung LI, and Chae YK
- Subjects
- Humans, Male, Female, Retrospective Studies, Middle Aged, Aged, Adult, Mutation, Aged, 80 and over, Survival Rate, Capecitabine administration & dosage, Capecitabine therapeutic use, ErbB Receptors genetics, ErbB Receptors antagonists & inhibitors, Treatment Outcome, Neoplasm Invasiveness, Adenocarcinoma, Mucinous drug therapy, Adenocarcinoma, Mucinous pathology, Lung Neoplasms drug therapy, Lung Neoplasms pathology, Antineoplastic Combined Chemotherapy Protocols therapeutic use
- Abstract
Background: Invasive mucinous adenocarcinoma (IMA) is a rare histological subtype of lung invasive adenocarcinoma with unique clinical, radiological, histopathological, and genomic characteristics. There have been limited studies on the effectiveness of systemic therapy for lung IMA, with conflicting results reported., Methods: We retrospectively investigated the medical records of patients diagnosed with lung IMA. Patients who were ≥ 18 years of age and received at least 1 course of treatment for metastatic or locally advanced inoperable disease were included in the study. Archive records of 113 patients diagnosed with IMA were screened for the study., Results: A total of 41 patients with lung IMA were included. The targetable mutation rate was 20.6% (in 6 of 29 patients). Most patients (83.1%) had received platinum-based chemotherapy as a first-line treatment. The objective response rate (ORR) was 25.7%, and median progression-free survival (PFS) and overall survival (OS) were 8.1 months (95% CI, 5.02-11.2) and 17.5 months (95% CI, 11.7-23.3 months), respectively, in the patients who received chemotherapy. The median PFS and ORR were 20.6 (95% CI, 18.9-66.5) and 66.6%, respectively, in epidermal growth factor receptor (EGFR) mutation-positive patients (n = 3) with relevant targeted therapy. Only 1 patient used oxaliplatin and capecitabine combination (XELOX) as chemotherapy in the second-line treatment and achieved a partial response (PR) at 7.2 months., Conclusion: Platinum-based chemotherapies moderately enhance IMA patients' survival rates. Anti-EGFR-targeted drugs are seen as potentially effective in patients with EGFR driver mutation positive. Large, prospective studies are needed to confirm our findings., Competing Interests: Disclosure Young Kwang Chae COI Research Grant: Abbvie, BMS, Biodesix, Freenome, Predicine Honoraria/Advisory Boards: Roche/Genentech, AstraZeneca, Foundation Medicine, Neogenomics, Guardant Health, Boehringher Ingelheim, Biodesix, Immuneoncia, Lilly Oncology, Merck, Takeda, Lunit, Jazz Pharmaceutical, Tempus, BMS, Regeneron, NeoImmunTech, Esai All other authors do not have competing interests., (Published by Elsevier Inc.)
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- 2024
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30. Bi-weekly irinotecan is an effective and convenient regimen in the treatment of relapsed or refractory small cell lung cancer.
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Yılmaz F, Yaşar S, Tatar ÖD, Yıldırım HÇ, Güven DC, Akyıldız A, Chalabiyev E, Aktaş BY, Arık Z, and Erman M
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- Humans, Female, Male, Middle Aged, Aged, Adult, Drug Administration Schedule, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Antineoplastic Combined Chemotherapy Protocols adverse effects, Salvage Therapy, Etoposide administration & dosage, Etoposide adverse effects, Retrospective Studies, Aged, 80 and over, Treatment Outcome, Irinotecan administration & dosage, Irinotecan therapeutic use, Irinotecan adverse effects, Small Cell Lung Carcinoma drug therapy, Small Cell Lung Carcinoma pathology, Lung Neoplasms drug therapy, Lung Neoplasms pathology, Neoplasm Recurrence, Local drug therapy
- Abstract
Background: Despite initial dramatic responses, metastatic small cell lung cancer (SCLC) invariably recurs. Irinotecan is one of the active agents for patients with recurrent SCLC. In the second line, weekly or three-weekly irinotecan regimens have been adopted, however, the optimal dose and schedule is not defined. In our institution, we use a bi-weekly regimen of irinotecan. In this study, we aimed to investigate the safety and efficacy of the bi-weekly irinotecan in the second- or third-line treatment of SCLC patients., Methods: The study population consisted of advanced stage SCLC patients who were followed at Hacettepe University Cancer Institute between January 2007 and March 2021 and received salvage irinotecan 180 mg/m
2 every two weeks, following progression after platinum-etoposide treatment., Results: One hundred patients were included. At diagnosis, nineteen patients (19%) had limited stage and 81 patients (81%) had extensive stage SCLC. Objective response rates (ORR) were 44.6% and 46.2% for patients who received irinotecan treatment in second line, and in third line, respectively. Seventeen percent of all the patients had grade 3 and above adverse events during irinotecan treatment. In our study, 45.8% of patients were able to complete at least 6 cycles of irinotecan treatment and 69.8% were able to receive at least 3 cycles of irinotecan treatment without any dose interruption or reduction., Conclusions: Irinotecan 180 mg/m2 every two weeks appears to be safe and effective in the 2nd- and 3rd-line treatment of advanced stage SCLC. Bi-weekly administration allows G-CSF prophylaxis in between doses, leading to an uninterrupted administration., (© 2024. The Author(s).)- Published
- 2024
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31. Objective Response Rate is a Surrogate Marker for Long-Term Overall Survival in Metastatic Urothelial Carcinoma Patients Treated With Immune Checkpoint Inhibitors.
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Tural D, Arslan C, Selcukbiricik F, Olmez OF, Erman M, Ürün Y, Erdem D, and Kilickap S
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- Humans, Male, Female, Aged, Middle Aged, Aged, 80 and over, Treatment Outcome, Retrospective Studies, Response Evaluation Criteria in Solid Tumors, Urinary Bladder Neoplasms drug therapy, Urinary Bladder Neoplasms pathology, Urinary Bladder Neoplasms mortality, Urinary Bladder Neoplasms immunology, Carcinoma, Transitional Cell drug therapy, Carcinoma, Transitional Cell mortality, Carcinoma, Transitional Cell secondary, Urologic Neoplasms drug therapy, Urologic Neoplasms mortality, Urologic Neoplasms pathology, Urologic Neoplasms immunology, Follow-Up Studies, Survival Rate, Kaplan-Meier Estimate, Immune Checkpoint Inhibitors therapeutic use
- Abstract
Background: This study aimed to evaluate the utility of RECIST criteria-based objective response rate (ORR) as a potential surrogate endpoint for long-term overall survival (OS) in patients with metastatic urothelial carcinoma who were treated with immune checkpoint inhibitors (ICIs)., Methods: The primary endpoint was overall ORR and OS, duration of treatment (DoR) with ICIs. ORR was analyzed using Fisher's exact test. Median follow-up and OS were estimated by using the Kaplan-Meier method., Results: The median follow-up was 58 (1.15-71) months. Progression developed in 94 (47%) patients during the first 3 months of ICIs therapy. The treatment response to ICIs included complete response (CR), partial response (PR) and stable disease in 10% (n = 20), 23% (n = 46), and 20% (n = 41) of patients, respectively. The responder and nonresponder groups differed in terms of certain baseline characteristics, such as Bellmunt risk factors, and neutrophil-to-lymphocyte ratio (NLR). The 5-year OS rates for patients with CR and PR were 73% and 23%, respectively. The median DoR for CR, PR, and SD were 51.8 months (44.5-59.1), 20.7 months (16.7-24.6), and 8.8 months (5.5-12.1), respectively. Overall, 16(80%) patients with CR and 14(30%) patients with PR had an ongoing response at the time of the analysis. In the univariate analysis, NLR > 3, liver metastases, ECOG PS ≥ 1, and hemoglobin levels < 10 mg/dl, as well as the PR and CR, were all significantly associated with OS. In multivariate analysis, presence of liver metastases (HR 2.3; 95% CI, 1.3-4.2; P < .004) was found to be an independent determinant of short OS, while PR (HR 0.3; 95% CI, 0.15-0.5; P < .001) and CR (HR 0.06; 95% CI, 0.014-0.27; P < .001) were associated with improved OS., Conclusions: In conclusion, this 5-year analysis of real-world data in the setting of metastatic urothelial cancer indicated a significant correlation between ORR, especially CR, and OS in patients who received ICIs. Therefore, identifying a potential surrogate marker for survival in patients treated with ICIs would represent an important advance in the early identification of patients' response or resistance to ICIs., Competing Interests: Disclosure No conflict of interest exists in the submission of this manuscript, and the manuscript is approved by all authors for publication. I would like to declare on behalf of my co-authors that the work described was original research that has not been published previously, and is not under consideration for publication elsewhere, in whole or in part. All the authors listed have approved the manuscript that is enclosed. All authors have contributed to the collection of the data, analysis, and writing of the article., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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32. Longitudinal bi-criteria framework for assessing national healthcare responses to pandemic outbreaks.
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Guitouni A, Belacel N, Benabbou L, Moa B, Erman M, and Abdul H
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- Humans, Algorithms, SARS-CoV-2 isolation & purification, Longitudinal Studies, Benchmarking, Fuzzy Logic, COVID-19 epidemiology, COVID-19 virology, Pandemics, Delivery of Health Care
- Abstract
Pandemics like COVID-19 have illuminated the significant disparities in the performance of national healthcare systems (NHCSs) during rapidly evolving crises. The challenge of comparing NHCS performance has been a difficult topic in the literature. To address this gap, our study introduces a bi-criteria longitudinal algorithm that merges fuzzy clustering with Data Envelopment Analysis (DEA). This new approach provides a comprehensive and dynamic assessment of NHCS performance and efficiency during the early phase of the pandemic. By categorizing each NHCS as an efficient performer, inefficient performer, efficient underperformer, or inefficient underperformer, our analysis vividly represents performance dynamics, clearly identifying the top and bottom performers within each cluster of countries. Our methodology offers valuable insights for performance evaluation and benchmarking, with significant implications for enhancing pandemic response strategies. The study's findings are discussed from theoretical and practical perspectives, offering guidance for future health system assessments and policy-making., (© 2024. His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, and Adel Guitouni, Loubna Benabbou, Belaid Moa, Munire Erman, Halim Abdul 2024.)
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- 2024
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33. Comparison of the efficacy of sunitinib and pazopanib in patients with advanced non-clear renal cell carcinoma.
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Yildirim HC, Bayram E, Chalabiyev E, Majidova N, Avci T, Güzel HG, Kapar C, Uzun M, Perkin P, Akgül F, Yildirim SS, Sali S, Yildiz A, Kazaz SN, Hendem E, Arcagok M, Tufan G, Yildirim U, Akgul OF, Arslan Ç, Taban H, Sahin E, Caglayan M, Esen R, Öksüzoğlu B, Guven DC, Kaplan MA, Araz M, Basaran M, Cubukcu E, Gokmen E, Cicin I, Algin E, Semiz HS, Tural D, Ozturk B, Erdogan AP, Sari M, Kara O, and Erman M
- Abstract
Non-clear cell renal cell carcinoma (non-ccRCC) is a highly heterogeneous disease group, accounting for approximately 25% of all RCC cases. Due to its rarity and especially heterogeneity, phase III trial data is limited and treatment options generally follow those of clear cell RCC. In the literature, there exists a number of studies with sunitinib, cabozantinib, and everolimus, but data on the efficacy of pazopanib are limited. Our aim in this study was to compare the efficacy of pazopanib and sunitinib, in a multicenter retrospective cohort of non-ccRCC patients. Our study included patients diagnosed with non-ccRCC who received pazopanib or sunitinib treatment as first-line therapy from 22 tertiary hospitals. We compared the progression-free survival (PFS), overall survival (OS), and response rates of pazopanib and sunitinib treatments. Additionally, we investigated prognostic factors in non-ccRCC. PFS and response rates of sunitinib and pazopanib were found to be similar, while a numerical difference was observed in OS. Being 65 years and older, being in the intermediate or poor risk group according to the International Metastatic Renal Cell Carcinoma Database Consortium, having liver metastases, presence of a sarcomatoid component, and having de novo metastatic disease were found to be significantly associated with shorter PFS. Pazopanib treatment appears to have similar efficacy in the treatment of non-ccRCC compared to sunitinib. Though randomized controlled trials are lacking and will probably be never be available, we suggest that pazopanib could be a preferred agent like sunitinib and cabozantinib.
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- 2024
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34. A randomized, open-label, phase 3 trial of pembrolizumab plus epacadostat versus sunitinib or pazopanib as first-line treatment for metastatic renal cell carcinoma (KEYNOTE-679/ECHO-302).
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Lara PN Jr, Villanueva L, Ibanez C, Erman M, Lee JL, Heinrich D, Lipatov ON, Gedye C, Gokmen E, Acevedo A, Semenov A, Park SH, Gafanov RA, Kose F, Jones M, Du X, Munteanu M, Perini R, Choueiri TK, and Motzer RJ
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Adult, Aged, 80 and over, Oximes, Carcinoma, Renal Cell drug therapy, Sunitinib therapeutic use, Sunitinib administration & dosage, Sulfonamides administration & dosage, Sulfonamides therapeutic use, Sulfonamides adverse effects, Antibodies, Monoclonal, Humanized administration & dosage, Antibodies, Monoclonal, Humanized therapeutic use, Antibodies, Monoclonal, Humanized adverse effects, Pyrimidines therapeutic use, Pyrimidines administration & dosage, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Antineoplastic Combined Chemotherapy Protocols adverse effects, Kidney Neoplasms drug therapy, Kidney Neoplasms pathology, Kidney Neoplasms mortality, Indazoles administration & dosage, Indazoles therapeutic use
- Abstract
Background: Immunotherapy-based combinations have emerged as standard therapies for patients with metastatic renal cell carcinoma (mRCC). Pembrolizumab, a PD-1 inhibitor, combined with epacadostat, an indoleamine 2,3-deoxygenase 1 selective inhibitor, demonstrated promising antitumor activity in a phase 1 study in advanced solid tumors, including mRCC., Methods: KEYNOTE-679/ECHO-302 was a randomized, open-label, parallel-group, multicenter, phase 3 study (NCT03260894) that compared pembrolizumab plus epacadostat with sunitinib or pazopanib as first-line treatment for mRCC. Eligible patients had histologically confirmed locally advanced or metastatic clear cell RCC and had not received systemic therapy. Patients were randomly assigned 1:1 to pembrolizumab 200 mg IV every 3 weeks plus epacadostat 100 mg orally twice daily versus sunitinib 50 mg orally once daily (4 weeks on treatment followed by 2 weeks off treatment) or pazopanib 800 mg orally once daily. Original dual primary end points were progression-free survival and overall survival. Enrollment was stopped when a phase 3 study in melanoma of pembrolizumab plus epacadostat compared with pembrolizumab monotherapy did not meet its primary end point. This protocol was amended, and primary end point was changed to investigator-assessed objective response rate (ORR) per RECIST 1.1., Results: One-hundred-twenty-nine patients were randomly assigned to receive pembrolizumab plus epacadostat (n = 64) or sunitinib/pazopanib (n = 65). Median (range) follow-up, defined as time from randomization to data cutoff, was 10.3 months (2.2-14.3) and 10.3 months (2.7-13.8) in the pembrolizumab plus epacadostat and sunitinib/pazopanib arms, respectively. ORRs were similar between pembrolizumab plus epacadostat (31.3% [95% CI 20.2-44.1] and sunitinib/pazopanib (29.2% [18.6-41.8]). Grade 3-5 treatment-related adverse events occurred in 34.4% and 42.9% of patients in the pembrolizumab plus epacadostat and sunitinib/pazopanib arms, respectively. One patient in the sunitinib/pazopanib arm died of septic shock (not treatment-related). Circulating kynurenine levels decreased in the pembrolizumab plus epacadostat arm, but not to levels observed in healthy subjects., Conclusions: ORRs were similar between pembrolizumab plus epacadostat and sunitinib/pazopanib as first-line treatment in patients with mRCC. Safety and tolerability appeared similar between treatment arms; no new safety concerns were identified. Antitumor responses observed in patients with RCC receiving pembrolizumab plus epacadostat may be driven primarily by pembrolizumab., Clinical Trial Registration: ClinicalTrials.gov; NCT03260894 ., (© 2023. The Author(s).)
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- 2024
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35. Impact of opioid analgesics on survival in cancer patients receiving immune checkpoint inhibitors.
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Kavgaci G, Guven DC, Kaygusuz Y, Karaca E, Dizdar O, Kilickap S, Aksoy S, Erman M, and Yalcin S
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- Humans, Male, Female, Retrospective Studies, Middle Aged, Aged, Progression-Free Survival, Adult, Aged, 80 and over, Immune Checkpoint Inhibitors therapeutic use, Analgesics, Opioid therapeutic use, Analgesics, Opioid administration & dosage, Neoplasms drug therapy, Neoplasms mortality
- Abstract
Purpose: This study aimed to assess the effects of concurrent opioid analgesic (OA) use with immune checkpoint inhibitors (ICIs) on progression-free survival (PFS) and overall survival (OS)., Methods: In this observational retrospective study, we included advanced cancer patients who received ICIs at Hacettepe University Hospital's Department of Medical Oncology between June 2018 and January 2023., Results: Our study included 375 recurrent or metastatic cancer patients treated with ICIs in the first, second line, or beyond. There were no significant differences between the OA-treated and OA-untreated groups regarding median age, age group, gender, primary tumor location, ICI type, or the presence of baseline liver and lung metastases. However, the OA-treated group exhibited a significantly higher proportion of patients who had received three or more prior treatments before initiating ICIs (p = 0.015). OA-Untreatment was significantly correlated with prolonged mPFS (6.83 vs. 4.30 months, HR 0.59, 95% CI 0.44-0.79, p < 0.001) and mOS (17.05 vs. 7.68 months, HR 0.60, 95% CI 0.45-0.80, p < 0.001)., Conclusions: Our study demonstrates an association between the concurrent use of OAs and reduced OS and PFS in patients treated with ICIs. While OA treatment serves as a surrogate marker for higher disease burden, it may also suggest a potential biological relationship between opioids and immunotherapy efficacy., (© 2024. The Author(s).)
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- 2024
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36. Adrenocortical Cancer in the Real World: A Comprehensive Analysis of Clinical Features and Management from the Turkish Oncology Group (TOG).
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Yasar HA, Aktas BY, Ucar G, Goksu SS, Bilgetekin I, Cakar B, Sakin A, Ates O, Basoglu T, Arslan C, Demiray AG, Paydas S, Cicin I, Sendur MAN, Karadurmus N, Kosku H, Uner A, Yumuk PF, Utkan G, Kefeli U, Tanriverdi O, Cinkir H, Gumusay O, Turhal NS, Menekse S, Kut E, Beypinar I, Sakalar T, Demir H, Yekeduz E, Kilickap S, Erman M, and Urun Y
- Subjects
- Humans, Male, Female, Middle Aged, Retrospective Studies, Adult, Aged, Turkey epidemiology, Prognosis, Young Adult, Survival Analysis, Adolescent, Kaplan-Meier Estimate, Treatment Outcome, Adrenal Cortex Neoplasms therapy, Adrenal Cortex Neoplasms pathology, Adrenal Cortex Neoplasms mortality, Adrenal Cortex Neoplasms surgery, Adrenal Cortex Neoplasms drug therapy, Adrenocortical Carcinoma therapy, Adrenocortical Carcinoma pathology, Adrenocortical Carcinoma mortality, Adrenocortical Carcinoma drug therapy, Adrenocortical Carcinoma surgery
- Abstract
Introduction: Adrenocortical carcinoma (ACC) is a rare yet highly malignant tumor associated with significant morbidity and mortality. This study aims to delineate the clinical features, survival patterns, and treatment modalities of ACC, providing insights into the disease's prognosis., Materials and Methods: A retrospective analysis of 157 ACC patients was performed to assess treatment methodologies, demographic patterns, pathological and clinical attributes, and laboratory results. The data were extracted from the hospital's database. Survival analyses were conducted using the Kaplan-Meier method, with univariate and multivariate analyses being performed through the log-rank test and Cox regression analyses., Results: The median age was 45, and 89.4% had symptoms at the time of diagnosis. The median tumor size was 12 cm. A total of 117 (79.6%) patients underwent surgery. A positive surgical border was detected in 26 (24.1%) patients. Adjuvant therapy was administered to 44.4% of patients. The median overall survival for the entire cohort was 44.3 months. Median OS was found to be 87.3 months (95% confidence interval [CI] 74.4-100.2) in stage 2, 25.8 (95% CI 6.5-45.1) months in stage 3, and 13.3 (95% CI 7.0-19.6) months in stage 4 disease. Cox regression analysis identified age, Ki67 value, Eastern Cooperative Oncology Group performance status, and hormonal activity as significant factors associated with survival in patients with nonmetastatic disease. In metastatic disease, only patients who underwent surgery exhibited significantly improved overall survival in univariate analyses., Conclusion: ACC is an uncommon tumor with a generally poor prognosis. Understanding the defining prognostic factors in both localized and metastatic diseases is vital. This study underscores age, Ki67 value, Eastern Cooperative Oncology Group performance status, and hormonal activity as key prognostic determinants for localized disease, offering critical insights into the complexities of ACC management and potential avenues for targeted therapeutic interventions., Competing Interests: Disclosure The authors declare no conflict of interest., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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37. A multicenter, retrospective archive study of radiological and clinical features of ALK-positive non-small cell lung cancer patients and crizotinib efficacy.
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Kilickap S, Ozturk A, Karadurmus N, Korkmaz T, Yumuk PF, Cicin I, Paydas S, Cilbir E, Sakalar T, Uysal M, Yesil Cinkir H, Uskent N, Demir N, Sakin A, Dursun OU, Aver B, Turhal NS, Keskin S, Tural D, Eralp Y, Bugdayci Basal F, Yasar HA, Sendur MAN, Demirci U, Cubukcu E, Karaagac M, Cakar B, Tatli AM, Yetisyigit T, Urvay S, Gursoy P, Oyan B, Turna ZH, Isikdogan A, Olmez OF, Yazici O, Cabuk D, Seker MM, Unal OU, Meydan N, Okutur SK, Tunali D, and Erman M
- Subjects
- Humans, Male, Female, Retrospective Studies, Middle Aged, Adult, Aged, Protein Kinase Inhibitors therapeutic use, Protein Kinase Inhibitors adverse effects, Antineoplastic Agents therapeutic use, Antineoplastic Agents adverse effects, Treatment Outcome, Crizotinib therapeutic use, Carcinoma, Non-Small-Cell Lung drug therapy, Carcinoma, Non-Small-Cell Lung pathology, Carcinoma, Non-Small-Cell Lung diagnostic imaging, Carcinoma, Non-Small-Cell Lung genetics, Lung Neoplasms drug therapy, Lung Neoplasms diagnostic imaging, Lung Neoplasms pathology, Anaplastic Lymphoma Kinase genetics
- Abstract
To evaluate radiological and clinical features in metastatic anaplastic lymphoma kinase+ non-small cell lung cancer patients and crizotinib efficacy in different lines. This national, non-interventional, multicenter, retrospective archive screening study evaluated demographic, clinical, and radiological imaging features, and treatment approaches in patients treated between 2013-2017. Totally 367 patients (54.8% males, median age at diagnosis 54 years) were included. Of them, 45.4% were smokers, and 8.7% had a family history of lung cancer. On radiological findings, 55.9% of the tumors were located peripherally, 7.7% of the patients had cavitary lesions, and 42.9% presented with pleural effusion. Pleural effusion was higher in nonsmokers than in smokers (37.3% vs. 25.3%, P = .018). About 47.4% of cases developed distant metastases during treatment, most frequently to the brain (26.2%). Chemotherapy was the first line treatment in 55.0%. Objective response rate was 61.9% (complete response: 7.6%; partial response: 54.2%). The highest complete and partial response rates were observed in patients who received crizotinib as the 2nd line treatment. The median progression-free survival was 14 months (standard error: 1.4, 95% confidence interval: 11.2-16.8 months). Crizotinib treatment lines yielded similar progression-free survival (P = .078). The most frequent treatment-related adverse event was fatigue (14.7%). Adrenal gland metastasis was significantly higher in males and smokers, and pleural involvement and effusion were significantly higher in nonsmokers-a novel finding that has not been reported previously. The radiological and histological characteristics were consistent with the literature data, but several differences in clinical characteristics might be related to population characteristics., Competing Interests: OUD and BA are the employees of Pfizer Biopharmaceuticals Group, Istanbul, Türkiye. BOU reports research support for clinical trials through institution from Novartis, GSK, Astra Zeneca; honoraria from BMS, Amgen, Novartis, Pfizer, Astra Zeneca, Roche, MSD; support for attending meetings from Roche, Pfizer, Novartis and is on the advisory boards of Takeda, Roche, Astra Zeneca, MSD, Novartis, Amgen, Gilead. ME has support funding for medical writing from Pfizer, provides lectures for Pfizer, Novartis, Roche, Astellas, Janssen, MSD, Gen, Nobel, Deva, Eczacibasi, BMS, Takeda, Astra Zeneca, has support for attending meetings from Roche, has participation on advisory board of Novartis, Pfizer, Roche, Astellas, MSD, Deva, Astra Zeneca. The remaining authors have no conflicts of interest to disclose., (Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2024
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38. The efficacy of immunotherapy and chemoimmunotherapy in patients with advanced rare tumors: A Turkish oncology group (TOG) study.
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Guven DC, Aykan MB, Muglu H, Bayram E, Helvaci K, Dursun B, Celayir M, Chelebiyev E, Nayir E, Erman M, Sezer A, Urun Y, Demirci U, Er O, Disel U, Bilici A, Arslan C, Karadurmus N, and Kilickap S
- Subjects
- Humans, Male, Female, Middle Aged, Retrospective Studies, Turkey, Aged, Adult, Immunotherapy methods, Rare Diseases drug therapy, Rare Diseases pathology, Rare Diseases mortality, Young Adult, Treatment Outcome, Aged, 80 and over, Immune Checkpoint Inhibitors therapeutic use, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Neoplasms drug therapy, Neoplasms mortality, Neoplasms therapy, Neoplasms immunology, Neoplasms pathology
- Abstract
Introduction: The advances in immune checkpoint inhibitors (ICIs) were relatively slow in rare tumors. Therefore, we conducted a multi-center study evaluating the efficacy of ICI monotherapy and the combination of ICIs with chemotherapy (CT) in patients with advanced rare tumors., Methods: In this retrospective cohort study, we included 93 patients treated with ICIs for NCI-defined rare tumors from the 12 cancer centers in Turkey. The primary endpoints were the overall response (ORR) and disease control rate (DCR)., Results: The cohort's median age was 56, and 53.8% of the patients were male. The most frequent diagnosis was sarcoma (29%), and 81.7% of the patients were previously treated with at least one line of systemic therapy in the advanced stage. The ORR and DCR were 36.8% and 63.2%, respectively. The germ cell tumors had the lowest ORR (0%), while the Merkel cell carcinoma had the highest ORR to ICIs (57.1%). Patients treated with ICI + ICI or ICI plus chemotherapy combinations had higher ORR (55.2% vs. 27.6%, p = 0.012) and DCR (82.8% vs. 53.4%, p = 0.008). The median OS was 13.47 (95% CI: 7.79-19.15) months, and the six and 12-month survival rates were 71% and 52%. The median duration of response was 16.59 months, and the 12-month progression-free survival rate was 66% in responders. The median time-to-treatment failure was 5.06 months (95% CI: 3.42-6.71). Three patients had high-grade irAEs with ICIs (grade 3 colitis, grade 3 gastritis, and grade 3 encephalitis in one patient each)., Conclusion: We observed over 30% ORR and a 13-month median OS in patients with rare cancers treated with ICI monotherapy or ICI plus CT combinations. The response rates to ICIs or ICIs plus CT significantly varied across different tumor types. Responding patients had over 2 years of survival, highlighting a need for further trials with ICIs for patients with rare tumors., (© 2023 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.)
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- 2024
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39. Mean Platelet Volume to Lymphocyte Ratio: A New Biomarker Predicting Response in Patients with Solid Tumors Treated with Nivolumab.
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Yildirim HC, Kus F, Guven DC, Karaca E, Kaygusuz Y, Dizdar O, Aksoy S, Erman M, Yalcin S, and Kilickap S
- Abstract
Introduction: Although immune checkpoint inhibitors (ICIs) are widely used in cancer treatment, identifying factors that predict treatment response remains a challenge in clinical practice. There is a need for biomarkers to identify patients who may not benefit from these treatments. It is crucial to identify a simple and cost-effective biomarker that can be easily incorporated into clinical practice. This study aims to investigate the mean platelet volume to lymphocyte ratio (MPVLR), as measured by a hemogram test, and median overall survival (mOS) in patients with cancer treated with nivolumab., Methods: A total of 131 adult patients with metastatic cancer, including malignant melanoma (MM), renal cell carcinoma (RCC), non-small cell lung cancer (NSCLC), and head and neck cancer (HNC), were included in this study. Baseline demographics, ECOG (Eastern Cooperative Oncology Group) performance status, tumor type, and blood count parameters were recorded. Univariate and multivariate analyses were conducted to evaluate potential risk factors., Results: The median age of the patients was 59.87 ± 11.97 years, and the median follow-up period was 20.20 months (IQR, 12.80-27.60). RCC (43.5%) and MM (25.9%) were the most common diagnoses. Patients with ECOG scores of 0-1 had a longer mOS than those with scores of 2-3 (mOS: 20.60 months [95% CI, 14.94-25.29] vs. 5.24 months [95% CI, 0-16.42], p < 0.001). Additionally, patients with lactate dehydrogenase (LDH) levels within the normal range had a longer mOS than those with high LDH levels (mOS: 24.54 months [95% CI, 14.13-34.96] vs. 13.10 months [95% CI, 4.49-21.72], p = 0.038). Patients with low MPVLR also had a longer mOS than those with high MPVLR (mOS: 33.70 months [95% CI, 25.99-41.42] vs. 11.07 months [95% CI, 6.89-15.24], p < 0.001). In the multivariate Cox regression analysis, high MPVLR, ECOG score of 2-3, and high LDH level were associated with shorter mOS ( p < 0.001, p = 0.001, and p = 0.046, respectively)., Conclusion: This study demonstrates that MPVLR could serve as a novel biomarker for predicting response to nivolumab treatment. Incorporating MPVLR into clinical practice may aid in identifying patients who are less likely to benefit from the treatment., Competing Interests: Source of Support: None. Conflict of Interest: None
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- 2023
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40. Is there any prognostic significance in pleural involvement and/or effusion in patients with ALK-positive NSCLC?
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Güner G, Aktaş BY, Başal FB, Demirkazık A, Gürsoy P, Demirci U, Erman M, Yumuk PF, Şenler FÇ, Çakar B, Çiçin İ, Öztürk A, Coşkun HŞ, Çubukçu E, Işıkdoğan A, Ölmez ÖF, Tatlı AM, Karaağaç M, Şakalar T, Eralp Y, Korkmaz T, and Kılıçkap S
- Abstract
Purpose: Anaplastic lymphoma kinase (ALK) mutations occurs in approximately 3-5% of patients with non-small cell lung cancer (NSCLC). Pleural involvement/effusion is common in ALK-positive patients with NSCLC at baseline. The aim of the study was to evaluate the characteristics of ALK-positive patients who have Ple-I/E., Methods: In this multicenter study, patients with ALK-positive NSCLC who have Ple-I/E were retrospectively analyzed. Clinical and demographic characteristics of the disease, response rates, median progression-free survival (PFS), and overall survival (OS) were evaluated in 362 ALK-positive patients with NSCLC., Results: Of the patients, 198 (54.7%) were male. The median age at the time of diagnosis was 54 (range 21-85) years. All patients' histology was adenocarcinoma (100%). At baseline, 57 (15.7%) patients had Ple-I/E. There was no association between Ple-I/E and gender, lung metastasis, or distant lymphadenopathy (LAP) metastasis. The frequencies of liver, brain, and bone metastases were significantly higher in ALK-positive patients without Ple-I/E compared to those with Ple-I/E (respectively 18.2% vs 4.8%, p = 0.008; 19.1% vs 4.8%, p = 0.001; 20.6% vs 8.9%, p = 0.002). The median PFS was longer in ALK-positive patients who had Ple-I/E (18.7 vs 10.6 months, p = 0.017). Similarly, the median OS was longer in ALK-positive patients who had Ple-I/E (44.6 vs 22.6 months, p = 0.051)., Conclusion: Brain, liver, and bone metastases were lower in ALK-positive patients with Ple-I/E. Patients presented with Ple-I/E were prone to have better PFS and OS., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2023
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41. Effect of Ramadan fasting on chronic inflammation markers and gut bacterial endotoxins among Egyptian hemodialysis patients.
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Samaan E, Eldeeb AA, Ibrahim AB, Erman M, Sabry AA, and Mahmoud MA
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- Humans, Prospective Studies, Egypt, Renal Dialysis, Fasting, Inflammation, C-Reactive Protein, Gastrointestinal Microbiome
- Abstract
Background: Chronic kidney disease (CKD) is associated with a state of chronic inflammation. This study aimed to investigate effects of Ramadan fasting on the markers of chronic inflammation and gut bacterial endotoxin levels in maintenance hemodialysis., Method: A prospective self-controlled observational study included 45 patients. Serum levels of High Sensitive CRP (hsCRP), indoxyl sulfate, and trimethylamine-n-levels were measured within a week before and a week after Ramadan fasting., Results: Twenty-seven patients have fasted more than 15 days (29 ± 2.2 days). The levels of high sensitive C-reactive protein (hsCRP) (median of 62 mg/L vs. 91 mg/L), trimethylamine-n-oxide (TMAO) (median of 4.5 μmoL/L vs. 17 μmoL/L), platelet-to-lymphocyte ratio (PLR) (mean of 98.9 mg/L vs. 111.8 mg/L) and neutrophil-to-lymphocyte ratio (NLR) (median of 1.56 vs. 1.59) were significantly lower after Ramadan fasting with p < 0.001, p < 0.001, p < 0.001, and p = 0.04, respectively., Conclusion: A beneficial effect of Ramadan fasting on levels of bacterial endotoxins and markers of chronic inflammation in hemodialysis patients was observed., (© 2023 International Society for Apheresis and Japanese Society for Apheresis.)
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- 2023
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42. The benefit of treatment beyond progression with immune checkpoint inhibitors: a multi-center retrospective cohort study.
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Guven DC, Yekeduz E, Erul E, Yazgan SC, Sahin TK, Karatas G, Aksoy S, Erman M, Yalcin S, Urun Y, and Kilickap S
- Subjects
- Retrospective Studies, Humans, Male, Female, Middle Aged, Aged, Progression-Free Survival, Immune Checkpoint Inhibitors therapeutic use, Neoplasms drug therapy, Neoplasms mortality
- Abstract
Objective: Treatment beyond progression (TBP) with immune checkpoint inhibitors (ICIs) is an evolving field due to the limitations of conventional imaging in response evaluation. However, real-life data on the benefit of TBP is scarce, especially from the limited resource settings and patients treated in the later lines. Therefore, we aimed to investigate the survival benefit of TBP with ICIs in patients with advanced tumors from a limited resource setting., Methods: For this multi-center retrospective cohort study, we included 282 patients treated with ICIs and had radiological progression according to RECIST 1.1 criteria. We evaluated post-progression survival according to the use of TBP (TBP and non-TBP groups) with univariate and multivariate analyses., Results: The cohort's median age was 61, and 84.4% were treated in the second or later lines. 82 (29.1%) of 282 patients continued on ICIs following the initial progression. In multivariate analyses, patients in the TBP group had improved post-progression survival compared to non-TBP (13.18 vs. 4.63 months, HR: 0.500, 95% CI: 0.349-0.717, p < 0.001). The benefit of the TBP was independent of the tumor type, treatment line, and age. Furthermore, TBP with ICIs remained associated with improved post-progression survival (HR: 0.600, 95% CI: 0.380-0.947, p = 0.028) after excluding the patients with no further treatment after progression in the non-TBP arm., Conclusions: In this study, we observed that patients receiving ICIs beyond progression had considerably longer survival. Continuation of ICIs after progression should be considered a reasonable management option for patients with advanced cancer, specifically for patients with limited alternative options., (© 2022. Crown.)
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- 2023
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43. The incidence and risk factors for acute kidney injury in patients treated with immune checkpoint inhibitors.
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Guven DC, Ozbek DA, Sahin TK, Kavgaci G, Aksun MS, Erul E, Yildirim HC, Chalabiyev E, Cebroyilov C, Yildirim T, Dizdar O, Aksoy S, Yalcin S, Kilickap S, Erman M, and Arici M
- Subjects
- Humans, Middle Aged, Immune Checkpoint Inhibitors adverse effects, Retrospective Studies, Incidence, Risk Factors, Carcinoma, Non-Small-Cell Lung, Hypoalbuminemia complications, Lung Neoplasms complications, Acute Kidney Injury chemically induced, Acute Kidney Injury epidemiology, Renal Insufficiency, Chronic chemically induced, Renal Insufficiency, Chronic epidemiology, Renal Insufficiency, Chronic complications
- Abstract
Recent observational studies reported acute kidney injury (AKI) events in over 10% of the patients treated with immune checkpoint inhibitors (ICIs). However, these studies included patients treated in high-resource settings and earlier lines. Therefore, we aimed to assess the AKI rates and predisposing factors in ICI-treated patients from a limited resource setting. We evaluated 252 patients with advanced cancer for this retrospective cohort study. AKI events were defined by Kidney Disease Improving Global Outcomes criteria. The median age was 59 years. The melanoma (18.3%), non-small cell lung cancer (14.7%) and renal cell carcinoma (22.6%) patients comprised over half of the cohort. During the follow-up, 45 patients (17.9%) had at least one AKI episode. In multivariable analyses, patients with chronic kidney disease (CKD) [odds ratio (OR), 3.385; 95% confidence interval (CI), 1.510-7.588; P = 0.003], hypoalbuminemia (OR, 2.848; 95% CI, 1.225-6.621; P = 0.015) or renin-angiotensin-aldosterone system (RAAS) inhibitor use (OR, 2.236; 95% CI, 1.017-4.919; P = 0.045) had increased AKI risk. There was a trend towards increased AKI risk in patients with diabetes (OR, 2.042; 95% CI, 0.923-4.518; P = 0.78) and regular proton pump inhibitors use (OR, 2.024; 95% CI, 0.947-4.327; P = 0.069). In this study, we observed AKI development under ICIs in almost one in five patients with cancer. The increased AKI rates in CKD, hypoalbuminemia or RAAS inhibitor use pointed out a need for better onco-nephrology collaboration and efforts to improve the nutritional status of ICI-treated patients., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2023
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44. Prognostic factors of overall and prostate-specific antigen-progression-free survival in metastatic castration-resistant prostate cancer patients treated with 177 Lu-PSMA-617. A single-center prospective observational study.
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Telli T, Tuncel M, Karabulut E, Aksoy S, Erman M, Akdogan B, and Caglar M
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- Male, Humans, Progression-Free Survival, Prospective Studies, Prognosis, Positron Emission Tomography Computed Tomography methods, Fluorodeoxyglucose F18 therapeutic use, Retrospective Studies, Treatment Outcome, Prostate-Specific Antigen therapeutic use, Prostatic Neoplasms, Castration-Resistant drug therapy
- Abstract
Background: Metastatic castration-resistant prostate cancer (mCRPC) is characterized by heterogeneity among patients as well as therapy responses due to diverse genetic, epigenetic differences, and resistance mechanisms. At this stage of the disease, therapy modalities should be individualized in light of the patients' clinical state, symptoms, and genetic characteristics. In this prospective study, we aimed to evaluate the outcome of patients with mCRPC treated with
177 Lutetium labeled PSMA-617 therapy (PSMA-RLT), as well as baseline and therapy-related parameters associated with survival., Methods: This prospective study included 52 patients who received two to six cycles of PSMA-RLT. Primary endpoints were overall survival (OS) and prostate-specific antigen (PSA)-progression-free survival (PFS).18 F-Fluorodeoxyglucose (FDG) and68 Ga-PSMA (PSMA) Positron Emission Tomography/Computer Tomography (PET/CT) scans were performed for a comprehensive assessment of tumor burden and heterogeneity. Biochemical, imaging, clinical, and therapy-related parameters were analyzed with the Kaplan-Meier, log-rank, and Cox regression analyses to predict OS and PFS., Results: Median OS and PSA-PFS were 17.7 (95% confidence interval [CI]: 15.2-20.2) and 6.6 months (95% CI: 4.5-8.8), respectively. Primary resistance to PSMA-RLT (hazard ratio [HR]: 12.57, 95% CI: 2.4-65.2, p: 0.003), <30% PSA response rate after first cycle of PSMA-RLT (HR: 1.016, 95% CI: 1.006-1.03, p: 0.003), FDG > PSMA disease (HR: 4.9, 95% CI: 1.19-20.62, p: 0.03), PSA doubling time (PSA DT) of ≤2.4 months (HR: 15.7, 95% CI: 3.7-66.4, p: <0.0001), and low hemoglobin levels (HR: 0.59, 95% CI: 0.41-0.83, p: 0.003) were correlated with poor OS in the multivariate analysis. Bone scintigraphy > PSMA disease (HR: 5.6; 95% CI: 1.8-17, p: 0.002) and high C-reactive protein (HR: 1.4, 95% CI: 1.1-1.7, p: 0.001) were significant predictive biomarkers for PFS in the multivariate analysis., Conclusion: PSA response rate and pattern to PSMA-RLT are the most important predictors of survival in patients receiving PSMA-RLT. Being a strong predictive biomarker, combined FDG and PSMA PET can be helpful for the decision of PSMA-RLT eligibility., (© 2023 The Authors. The Prostate published by Wiley Periodicals LLC.)- Published
- 2023
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45. Five-Year Outcome and Safety in Patients Treated With Immune Checkpoint Blockade Therapies for Urothelial Carcinoma: Experience From Real-World Clinical Practice.
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Tural D, Arslan C, Selcukbiricik F, Olmez OF, Akar E, Erman M, Ürün Y, Erdem D, Karadurmus N, and Kilickap S
- Subjects
- Humans, Male, Aged, Aged, 80 and over, Female, Immune Checkpoint Inhibitors therapeutic use, Progression-Free Survival, Kaplan-Meier Estimate, Urinary Bladder Neoplasms pathology, Carcinoma, Transitional Cell pathology
- Abstract
Background: In this study, we report real-world results from the 5-year follow-up data of urothelial carcinoma patients treated with immune checkpoint blockade therapies (ICTs)., Patients and Methods: Metastatic urothelial carcinoma patients treated with at least one course of ICT were included in the study. The primary endpoint was overall response rate (ORR), and secondary endpoints were overall survival (OS), progression-free survival (PFS), duration of treatment with ICT, and safety. Median follow-up, PFS, and OS were estimated by using the Kaplan-Meier method., Results: Data of 201 eligible patients were analyzed. The median age of the patients was 66 (37-86) years, and 156 (84.3%) were male. The majority of patients (94.6%) had Eastern Cooperative Oncology Group (ECOG) PS scores of 0 to 1 and primary tumor in the bladder was predominant (87.5%). The median follow-up time was 54 (1.15-65) months. The rate of complete response (CR) to ICT, partial response (PR) rate, and ORR were 10.4% (n = 21), 22.4% (n = 45), and 32.4% (n = 66), respectively. The median duration of response (DOR) was 34.8 months (95% confidence interval [CI], 29.2-42.1). Of the 66 patients who responded to treatment, 28 (42%) had an ongoing response at the time of the analysis. Median PFS and OS were 3.8 (2.6-5.8) months and 9.4 (7.4-11.4) months, respectively. The 5-year PFS and OS rates were 9.8% and 12.8%, respectively. Fifty-eight percent of patients experienced a treatment-related adverse event of any grade, and 33 (16.4%) patients had a grade 3 to 4 adverse event., Conclusion: This 5-year analysis of real-world data confirms the durable response and long-term survival with ICT in metastatic urothelial carcinoma patients., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2023
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46. Immunogenicity of two doses of inactive COVID-19 vaccine and third booster dose mRNA vaccine in patients with cancer receiving active systemic therapy.
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Guven DC, Incesu FGG, Yildirim HC, Erul E, Chalabiyev E, Aktas BY, Yuce D, Arik Z, Kilickap S, Aksoy S, Erman M, Hayran KM, Unal S, Alp A, and Dizdar O
- Subjects
- Humans, COVID-19 Vaccines, BNT162 Vaccine, Antibodies, Viral, Immunoglobulin G, RNA, Messenger genetics, mRNA Vaccines, COVID-19 prevention & control, Neoplasms therapy
- Abstract
We aimed to evaluate the seroconversion rates after two doses of inactive COVID-19 vaccine (CoronaVac) and the benefit of a third dose mRNA vaccine booster in patients with cancer receiving active treatment. Patients with solid tumors receiving active treatment (n = 101) and patients with no-cancer (n = 48) as the control group were included in the study. All the patients and controls had received two doses of CoronaVac and a third booster dose of the mRNA vaccine (Bnt162b2). Anti-SARS-CoV-2 Spike Receptor Binding Domain IgG antibody levels after the second and third dose were measured with quantitative ELISA. The median age of the patients was 66 (IQR 60-71). 79% of the patients were receiving chemotherapy, and 21% were receiving immunotherapy at the time of vaccination. Antibody levels measured after two doses of CoronaVac were significantly lower in patients with cancer than in the control group (median 0 μg/ml [IQR 0-1.17 μg/ml] vs median 0.91 μg/ml [IQR 0-2.24 μg/ml], respectively, P = .002). Seropositivity rates were 46.5% in patients with cancer and 72.9% in the control group (P = .002). Antibody measurement was performed in 26 patients after the third dose. Seroconversion rate increased from 46.5% to 88.5% (P < .001), and the antibody titers significantly increased with the third-dose booster (median 0 μg/ml [IQR 0-1.17 μg/ml] after two doses vs 12.6 μg/ml [IQR 1.8-69.1 μg/ml] after third booster dose, P < .001). Immunogenicity of CoronaVac is low in patients with cancer receiving active treatment, and administering a third dose of an mRNA vaccine is effective in terms of improving seroconversion rates., (© 2022 UICC.)
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- 2023
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47. NEPTUNE: Phase 3 Study of First-Line Durvalumab Plus Tremelimumab in Patients With Metastatic NSCLC.
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de Castro G Jr, Rizvi NA, Schmid P, Syrigos K, Martin C, Yamamoto N, Cheng Y, Moiseyenko V, Summers Y, Vynnychenko I, Lee SY, Bryl M, Zer A, Erman M, Timcheva C, Raja R, Naicker K, Scheuring U, Walker J, Mann H, Chand V, and Mok T
- Subjects
- Humans, Neptune, Antineoplastic Combined Chemotherapy Protocols adverse effects, Lung Neoplasms pathology, Carcinoma, Non-Small-Cell Lung pathology
- Abstract
Introduction: NEPTUNE, a phase 3, open-label study, evaluated first-line durvalumab plus tremelimumab versus chemotherapy in metastatic NSCLC (mNSCLC)., Methods: Eligible patients with EGFR and ALK wild-type mNSCLC were randomized (1:1) to first-line durvalumab (20 mg/kg every 4 weeks until progression) plus tremelimumab (1 mg/kg every 4 weeks for up to four doses) or standard chemotherapy. Randomization was stratified by tumor programmed death-ligand 1 expression (≥25% versus <25%), tumor histologic type, and smoking history. The amended primary end point was overall survival (OS) in patients with blood tumor mutational burden (bTMB) greater than or equal to 20 mutations per megabase (mut/Mb). Secondary end points included progression-free survival (PFS) in patients with bTMB greater than or equal to 20 mut/Mb and safety and tolerability in all treated patients., Results: As of June 24, 2019, 823 patients were randomized (intention-to-treat [ITT]); 512 (62%) were bTMB-evaluable, with 129 of 512 (25%) having bTMB greater than or equal to 20 mut/Mb (durvalumab plus tremelimumab [n = 69]; chemotherapy [n = 60]). Baseline characteristics were balanced in the intention-to-treat. Among patients with bTMB greater than or equal to 20 mut/Mb, OS improvement with durvalumab plus tremelimumab versus chemotherapy did not reach statistical significance (hazard ratio 0.71 [95% confidence interval: 0.49-1.05; p = 0.081]; median OS, 11.7 versus 9.1 months); the hazard ratio for PFS was 0.77 (95% confidence interval, 0.51-1.15; median PFS, 4.2 versus 5.1 months). In the overall safety population, incidence of grade 3 or 4 treatment-related adverse events was 20.7% (durvalumab plus tremelimumab) and 33.6% (chemotherapy)., Conclusions: NEPTUNE did not meet its primary end point of improved OS with durvalumab plus tremelimumab versus chemotherapy in patients with mNSCLC and bTMB greater than or equal to 20 mut/Mb. Despite the amended study design, with a resultant small primary analysis population, therapeutic activity was aligned with expectations based on mechanistic biology and previous studies., (Copyright © 2022 International Association for the Study of Lung Cancer. Published by Elsevier Inc. All rights reserved.)
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- 2023
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48. Blood Based Biomarkers as Predictive Factors for Hyperprogressive Disease.
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Yildirim HC, Guven DC, Aktepe OH, Taban H, Yilmaz F, Yasar S, Aksoy S, Erman M, Kilickap S, and Yalcin S
- Abstract
Purpose: With the widespread use of immunotherapy agents, we encounter treatment responses such as hyperprogression disease (HPD) that we have not seen with previous standard chemotherapy and targeted therapies. It is known that survival in patients with HPD is shorter than in patients without HPD. Therefore, it is important to know the factors that will predict HPD. We aimed to identify HPD-related factors in patients treated with immunotherapy. Methods: A total of 121 adult metastatic cancer patients treated with immunotherapy for any cancer were included. Baseline demographics, the ECOG performance status, type of tumors and baseline blood count parameters were recorded. Possible predisposing factors were evaluated with univariate and multivariate analyses. Results: The median age was 62.28 (interquartile range (IQR) 54.02−67.63) years, and the median follow-up was 12.26 (IQR 5.6−24.36) months. Renal cell carcinoma (33%) and melanoma (33.8%) were the most common diagnoses. Twenty patients (16.5%) had HPD. A high LDH level (p: 0.001), hypoalbuminemia (p: 0.016) and an NLR > 5 (p: 0.007) were found to be associated with hyperprogression. Sex (female vs. male, p: 0.114), age (>65 vs. <65, p: 0.772), ECOG (0 vs. 1−4, p: 0.480) and the line of treatment (1−5, p: 0.112) were not found to be associated with hyperprogression. Conclusions: In this study, we observed HPD in 16.5% of immunotherapy-treated patients and increased HPD risk in patients with a high LDH level (p: 0.001), hypoalbuminemia (p: 0.016) and an NLR > 5 (p: 0.007).
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- 2022
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49. The Association between Early Changes in Neutrophil-Lymphocyte Ratio and Survival in Patients Treated with Immunotherapy.
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Guven DC, Sahin TK, Erul E, Cakir IY, Ucgul E, Yildirim HC, Aktepe OH, Erman M, Kilickap S, Aksoy S, and Yalcin S
- Abstract
Dynamic changes in the blood-based biomarkers could be used as a prognostic biomarker in patients treated with immune checkpoint inhibitors (ICIs), although the data are limited. We evaluated the association between the neutrophil−lymphocyte ratio (NLR) and early NLR changes with survival in ICI-treated patients. We retrospectively evaluated the data of 231 patients with advanced-stage cancer. We recorded baseline clinical characteristics, baseline NLR and fourth-week NLR changes, and survival data. A compound prognostic score, the NLR2-CEL score, was developed with the following parameters: baseline NLR (<5 vs. ≥5), ECOG status (0 vs. ≥1), Charlson Comorbidity Index (CCI, <9 vs. ≥9), LDH (N vs. ≥ULN), and fourth-week NLR change (10% or over NLR increase). In the multivariable analyses, higher NLR (HR: 1.743, p = 0.002), 10% or over NLR increase in the fourth week of treatment (HR: 1.807, p = 0.001), higher ECOG performance score (HR: 1.552, p = 0.006), higher LDH levels (HR: 1.454, p = 0.017), and higher CCI (HR: 1.400, p = 0.041) were associated with decreased OS. Compared to patients with the lowest scores, patients in the highest score group had significantly lower OS (HR: 7.967, 95% CI: 3.531−17.979, p < 0.001) and PFS. The composite score had moderate success for survival prediction, with an AUC of 0.702 (95% CI: 0.626−0.779, p < 0.001). We observed significantly lower survival in patients with higher baseline NLR values and increased NLR values under treatment.
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- 2022
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50. THSD7A expression: a novel immunohistochemical determinant in predicting overall survival of metastatic renal cell carcinoma treated with targeted therapy.
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Aktepe OH, Gundogdu F, Kosemehmetoglu K, Yeter HH, Aksoy S, Guven DC, Sahin TK, Yuce D, Kertmen N, Dizdar O, Yalcin S, and Erman M
- Subjects
- Disease-Free Survival, Humans, Kaplan-Meier Estimate, Nephrectomy, Prognosis, Retrospective Studies, Carcinoma, Renal Cell drug therapy, Carcinoma, Renal Cell pathology, Kidney Neoplasms drug therapy, Kidney Neoplasms pathology
- Abstract
Background: The association of thrombospondin type 1 domain-containing 7A (THSD7A) expression, a novel angiogenesis-related marker, with survival outcomes of tumors including renal cell carcinoma (RCC) remains to be clarified. Therefore, we investigated the impact of THSD7A on outcomes of metastatic RCC (mRCC) patients treated with targeted therapy., Methods: A total of 86 mRCC patients were included. The expression of THSD7A in nephrectomy material of the patients was assessed by immunohistochemistry and expression patterns were categorized into two groups: negative (no staining) and positive. Univariable and multivariable Cox regression models evaluated the impact of THSD7A expression on progression free survival (PFS) and overall survival (OS) of the patients., Results: THSD7A expression was determined in 77.9% of the patients. Kaplan-Meier analyses showed that while the patients with THSD7A expression had significantly inferior OS times than those with negative THSD7A expression (19.9 months vs. 52.2 months, P = 0.024, respectively), there was no association between THSD7A expression and PFS. The univariate analyses demonstrated that the significant variables in predicting OS were presence of bone metastasis (P = 0.030), THSD7A expression (P = 0.028), and International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) scoring system (P < 0.001). However, applying multivariate analyses, the independent variables in predicting OS were THSD7A expression (HR: 2.639, P = 0.037) and IMDC scoring system (P < 0.001)., Conclusion: We revealed that THSD7A expression was associated with OS of mRCC patients treated with targeted therapy. There might be an important link between THSD7A expression and resistance to targeted therapy., (© 2021. Royal Academy of Medicine in Ireland.)
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- 2022
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