Person: EVRENSEL, TÜRKKAN
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
EVRENSEL
First Name
TÜRKKAN
Name
23 results
Search Results
Now showing 1 - 10 of 23
Publication C-kit (CD117) expression in patients with small cell lung cancer(Galenos Yayıncılık, 2015-03-01) Gözkaman, Ayşe; Okuturlar, Yıldız; Kanat, Özkan; Günald, Meral; Serin, Sibel Ocak; Saraydaroğlu, Özlem; Kumbasar, A. Baki; Evrensel, Türkkan; Gözkaman, Ayşe; Okuturlar, Yıldız; Kanat, Özkan; Serin, Sibel Ocak; SARAYDAROĞLU, ÖZLEM; EVRENSEL, TÜRKKAN; Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı/Onkoloji Bilim Dalı.; ludağ Üniversitesi/Tıp Fakültesi/Patoloji Anabilim Dalı.; Z-1463-2018; AAJ-1027-2021; X-3647-2018; AAH-9701-2021; JRQ-2583-2023; JRU-4028-2023; DQW-9819-2022Aim: The tyrosine-kinase receptor c-kit and its ligand stem cell factor (SCF) are coexpressed in many small cell lung cancer (SCLC) cell lines. The aim of this study was to search the role of CD117 (c-kit) overexpression as a prognostic marker in SCLC.Methods: Demographic and clinical data of patients with SCLC was registered. C-kit overexpression was evaluated using immunohistochemistry performed in paraffin-embedded specimens. Immunostaining data of 87 patients were correlated with survival and other relevant clinical parameters.Results: The mean age of the patients was 57.1 +/- 9.9 years. Thirty-nine patients (44.8%) had limited disease and 48 patients (55.2%) had extensive disease. C-kit (+) expression was observed in 24.1% of 87 patients. The mean survival time for c-kit (+) patients was 10.2 (CI=5.7-14.7) months as compared with the c-kit (-) population in whom the survival was 14.7 (CI=10.7-18.6) months. The difference in survival time between c-kit (+) and (-) patients was not statistically significant (p=0.264).Conclusion: New prognostic markers and more effective treatment regimens are needed for SCLC. Our findings may provide an insight to future clinical trials searching c-kit inhibitors in SCLC.Publication The roles of M30 and M65 in the assessment of treatment response and prognosis in patients with non-small cell lung cancer, who receive neoadjuvant treatment(Termedia Publishing House Ltd, 2019-01-01) Coşkun, Belkıs Nihan; Dizdar, Oğuzhan Sıtkı; Korkmaz, Seniz; Ulukaya, Engin; Evrensel, Türkkan; COŞKUN, BELKIS NİHAN; Korkmaz, Seniz; Ulukaya, Engin; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Klinik Biyokimya Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; 0000-0003-0298-4157 ; 0000-0001-5779-9499; 0000-0003-4875-5472; 0000-0002-9732-5340; AAG-7155-2021; HTN-1234-2023; K-5792-2018; AAJ-1027-2021Aim of the study: To investigate the efficacy of evaluating prognosis and response to lung cancer treatment using M30 and M65 antigens, which are indicators of necrosis.Material and methods: Forty-eight patients with lung cancer, who were planned to receive neoadjuvant chemotherapy, and 38 healthy volunteers were enrolled in the study. Using M30 and M65 levels, cytokeratin 18 levels were measured twice: before and 48 hours after the first chemotherapy treatment. Apoptotic and total necrosis levels were determined by measuring the M65 and M30 levels.Results: The M30 and M65 antigen levels in the patient group were significantly higher than in the control group (p < 0.001). The M30 and M65 antigen levels were significantly higher 48 hours after the chemotherapy compared with before the chemotherapy (p < 0.001). There were no significant differences in M65 levels between patients who responded to treatment and patients who progressed. The M30 levels increased significantly in patients with disease progression (p = 0.694 and p = 0.024, respectively). No significant differences in serum M30 and M65 antigen levels were found when compared between the surviving and deceased patients (p = 0.126 and p = 0.340, respectively).Conclusions: A significant increase was detected in serum M30 and M65 levels in patients with lung cancer. There was a greater increase in serum M30 levels in patients who did not respond to the chemotherapy. This result gives rise to the thought that evaluating apoptosis and total necrosis through M30 and M65 measurements alone only in patients receiving neoadjuvant chemotherapy would be insufficient for specifying the effectiveness of the treatment.Publication Placement technique and the early complications of balloon breast brachytherapy - magee-womens hospital experience(Lippincott Williams & Wilkins, 2007-04-01) Soran, Atilla; Beriwal, Sushil; Mogus, Robert; Keenan, Donald; Kelley, Joseph L.; Balkan, Mujdat; Harlak, Ali; Bonaventura, Marguerite A.; Johnson, Ronald; Falk, Jeffrey S.; Evrensel, Türkkan; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim Dalı.; 0000-0002-3398-7230; 0000-0002-9015-5617; AAJ-1027-2021Backgrounds and Objectives: Open (OT) and percutaneous closed (PCT) techniques have been described for placement of the MammoSite catheter to deliver accelerated partial breast brachytherapy. We report early complications of both techniques.Methods: A total of 125 patients underwent catheter placement for MammoSite high-dose rate brachytherapy, with 108 patients successfully completing treatment. The OT was used in 85 patients and PCT in 40 patients. The mean distance between the balloon surface and breast skin was 1.44 cm and 1.31 cm, respectively. Average skin dose was 278 cGy in the OT group and 295 cGy in the PCT group (P > 0.05). Average gross specimen size was 43.16 cm(3) in the OT group and 62.19 cm(3) in the PCT group. Median follow-up was I I months for the OT group and 5 months for the PCT group.Results: In 17 cases, the catheter was subsequently removed without the patient completing treatment. Two of the patients in the OT group (3%) developed a delayed abscess. The overall incidence of persistent seroma (>6 months) was 20% with all occurring in the OT group, 30% of those patients. There were no acute skin toxicities higher than grade 2. The overall cosmesis is excellent or good in 95% of patients.Conclusion: Despite short follow-up and a small sample size in this study, it seems that the MammoSite brachytherapy was well tolerated by patients with early stage breast cancer when using either the OT or PCT.Publication An open-label trial to assess the safety of regorafenib in turkish patients with metastatic colorectal cancer (mCRC) that progressed on standard therapy (REGARD)(Oxford University Press, 2015-06-01) Dane, F.; Özgürdal, K.; Yalçın, S.; Benekli, M.; Aykan, N. F.; Yücel, I.; Özkan, M.; Evrensel, T.; Sevinç, A.; Coşkun, H. S.; Şanlı, U. S.; Kara, I. O.; EVRENSEL, TÜRKKAN; 0000-0002-9732-5340; AAJ-1027-2021Bu çalışma, 1-4 Temmuz 2015 tarihlerinde Barcelona'da düzenlenen ESMO 17. Dünya Gastrointestinal Kanser Kongresinde bildiri olarak sunulmuştur.Publication Retrospective comparison of the efficacy of therapeutic agents in metastatic soft-tissue sarcomas(Kare Yayınevi, 2023-03-02) Caner, Burcu; Ocak, Birol; Şahin, Ahmet Bilgehan; Salı, Seda; Çoban, Eyüp; Deligönul, Adem; Çubukçu, Erdem; Evrensel, Türkkan; CANER, BURCU; SALİ, SEDA; ÇOBAN, EYÜP; DELİGÖNÜL, ADEM; ÇUBUKÇU, ERDEM; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; 0000-0003-1591-3323 ; HJH-6371-2023; DPO-3759-2022; JIS-1916-2023; JHC-1731-2023; JGT-4101-2023; EXZ-0745-2022OBJECTIVEThere are few agents used in soft-tissue sarcoma treatment. We compared the efficacy of therapies, aiming to identify the best therapy sequence, and reveal the factors affecting the risk of progression or death.METHODSFifty-five patients were included in the study. Data such as age, gender, tumor primary site, histological type, tumor grade, the Ki67 percentage score, treatments, radiotherapy, and metastasectomy history, the dates of diagnosis, metastasis, progression, and death were retrospectively evaluated. Progression-free survival (PFS) and overall survival (OS) for therapies, and the risk factors for the progression or death were analyzed.RESULTSIn the first-line, gemcitabine-docetaxel provided longer PFS than the doxorubicin-ifosfamide combination (7.4 months vs. 4.8 months, p=0.035), although this did not result in OS difference. In the second line, the efficacy of trabectedin and pazopanib were similar, whereas trabectedin showed less activity in liposarcomas. In the third-line and beyond, trabectedin, pazopanib and eribulin showed similar PFS and OS. The only factor that affected the risk of death was metastasectomy (HR for death: 0.35, 95% CI: 0.18-0.66, p=0.001). CONCLUSIONWe found that agents used in soft-tissue sarcoma have similar efficacy, which is not affected by the previous therapies. However, it should be noted that soft-tissue sarcomas include many histological types, and to choose the optimal drug, the histological type must be one of the major factors considered. Furthermore, all patients should be evaluated for possible metastasectomy, which came out as the only factor reducing the risk of death in our study.Publication DPYD c.1905+1G>A promotes fluoropyrimidine-induced anemia, a prognostic factor in disease-free survival, in colorectal cancer(Mary Ann Liebert, Inc, 2021-04-01) Deligönül, Adem; Aksoy, Seçil; Tezcan, Gülçin; Tunca, Berrin; Kanat, Özkan; Çubukcu, Erdem; Yılmazlar, Tuncay; Öztürk, Ersin; Egeli, Ünal; Çeçener, Gülşah; Alemdar, Adem; Evrensel, Türkkan; DELİGÖNÜL, ADEM; AKSOY, SEÇİL; TEZCAN, GÜLÇİN; TUNCA, BERRİN; Kanat, Özka; ÇUBUKÇU, ERDEM; YILMAZLAR, AHMET TUNCAY; EGELİ, ÜNAL; ÇEÇENER, GÜLŞAH; ALEMDAR, ADEM; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Diş Hekimliği Fakültesi/Temel Bilimler Bölümü.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Biyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Genel Cerrahi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Sağlık Bilimleri Enstitüsü.; 0000-0002-6400-4911; 0000-0002-5956-8755; 0000-0002-1619-6680; 0000-0001-8593-5101; 0000-0001-7904-883X; 0000-0002-3820-424X; HIZ-7332-2022; AAH-1420-2021; AAH-3843-2020; ESM-4544-2022; JDG-0330-2023; ABI-6078-2020; CYM-0930-2022; ETP-1691-2022; CKK-3621-2022; AAP-9988-2020; EXZ-0745-2022Background and Aim: In 10-30% of colorectal cancer (CRC) patients, toxic reactions occur after fluoropyrimidine-based chemotherapy. A dihydropyridine dehydrogenase (DPYD) gene variant, c.1905 + 1G>A, leads to intolerance to fluoropyrimidines. Due to the low frequency of this variant in many populations, the prevalence of fluoropyrimidine-induced hematologic side effects in CRC patients with the c.1905 + 1G>A variant is unclear. In this study, we investigated the prevalence of the DPYD c.1905 + 1 variants in a Turkish CRC cohort and the potential effects of these variants on fluoropyrimidine-induced hematologic side effects.Materials and Methods: The DPYD c.1905 + 1 variant was genotyped using polymerase chain reaction-restriction fragment length polymorphism analysis and confirmed by Sanger sequencing in peripheral blood samples of 100 CRC patients who received fluoropyrimidine-based chemotherapy and 60 healthy volunteers. The association of c.1905 + 1 variants with susceptibility to hematologic side effects was evaluated.Results: The DPYD c.1905 + 1G>A variant was more common in the CRC group than in the healthy control group (p = 0.001). The presence of the c.1905 + 1G>A variant was associated with thrombocytopenia (p = 0.039) and anemia (p = 0.035). CRC patients with fluoropyrimidine-induced anemia had shorter disease-free survival than CRC patients without fluoropyrimidine-induced anemia (p = 0.0009).Conclusions: Before administering fluoropyrimidine-based chemotherapy, genetic screening for the DPYD c.1905 + 1G>A variant should be performed with the aim of preventing anemia and anemia-induced complications in CRC patients.Publication Investigation of FGFR4 (Gly388Arg) gene Polymorphism in primary lung cancer Patients(Kamla-Raj Enterprises, 2015-03-01) Türe, Mehmet; Yakut, Tahsin; Deligönül, Adem; Karkucak, Mutlu; Sağ, Şebnem Özemri; Hartavi, Mustafa; Çubukcu, Erdem; Gülten, Tuna; Evrensel, Türkkan; Türe, Mehmet; Yakut, Tahsin; DELİGÖNÜL, ADEM; ÖZEMRİ SAĞ, ŞEBNEM; Hartavi, Mustafa; ÇUBUKÇU, ERDEM; Gülten, Tuna; EVRENSEL, TÜRKKAN; Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Genetik Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Onkoloji Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı.; 0000-0002-9732-5340; AAJ-1027-2021; AAH-8355-2021; ECY-8582-2022; GIS-1493-2022; ESM-4544-2022; CUI-5353-2022; ETP-1691-2022; EYU-9227-2022Several studies have shown relationships between predisposition to various types of cancer and polymorphisms of the fibroblast growth factor receptor 4 (FGFR4) gene. In the present study, researchers investigated the relationship between primary lung cancer and (PLC) FGFR4 Gly388Arg polymorphism in regard to tendency, histopathologic sub-type, early onset, and metastatic status. The present study included 124 PLC patients and 100 healthy controls. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to identify gene polymorphism of FGFR4 Gly388Arg. Statistical significance was considered when p < 0.05, and a statistically significant difference was not found in FGFR-4 polymorphism between the patient group and control group in regard to tendency, histopathologic sub-type, early onset, and metastatic status (p > 0.05). The findings in this study demonstrated that there was no relationship between polymorphism of FGFR4 Gly388Arg gene and PLC. However, these results should be confirmed in larger studies and in specific histopathological sub-types of PLC.Publication Evaluation of prognostic factors on survival in non-small-cell lung cancer patients treated with postoperative radiotherapy(Kare Publ, 2009-01-01) Sarıhan, Süreyya; SARIHAN, SÜREYYA; Gebitekin, Cengiz; ERCAN, İLKER; GEBİTEKİN, CENGİZ; Bayram, Ahmet Sami; BAYRAM, AHMET SAMİ; EVRENSEL, TÜRKKAN; Evrensel, Turkkan; Akyıldız, Elif Ülker; AKYILDIZ, ELİF ÜLKER; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyasyon Onkolojisi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Göğüs Cerrahisi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Patoloji Anabilim Dalı.; 0000-0003-4816-5798; 0000-0003-0684-0900; 0000-0002-2382-290X; ABB-7580-2020; AAJ-1027-2021; JCE-0097-2023; AAH-4970-2021; AAE-1069-2022OBJECTIVESTo investigate the prognostic factors on survival in non-small-cell lung cancer patients treated with postoperative radiotherapy.METHODSSixty-five patients treated with a median dose of 59 Gy (50-66.6 Gy) between October 1995 and January 2005 were included in the study. Clinical and categorical variables were analyzed.RESULTSOn multivariate analysis, presence of clinical N2 and brain metastasis at first relapse and absence of chemotherapy (p=0.02, p=0.004, p=0.004) had a negative impact on overall survival, while presence of pathological nodal involvement and absence of chemotherapy (p=0.02, p=0.04) were effective on disease-free survival. Regarding categorical variables, type of resection was found related with positive margin and N1, right-sided location with N1-e and N2, and systematic nodal dissection with N1. The number of involved lymph nodes was found related with N2 skip metastasis and involved N1-10 was related with N1-e.CONCLUSIONPresence of metastatic lymph nodes was found to be a poor prognostic factor and delivery of chemotherapy was seen to positively affect overall and disease-free survival rates.Publication Efficacy and safety of trastuzumab emtansine in her2 positive metastatic breast cancer: Real-world experience(Taylor & Francis, 2021-06-05) Bahçeci, Aykut; Paydaş, Semra; Ak, Naziye; Ferhatoğlu, Ferhat; Saip, Pınar Mualla; Şeydaoğlu, Gülşah; Bilici, Mehmet; Şimşek, Melih; Tekin, Salim Başol; Çalıkuşu, Züleyha; Yavuz, Sinan; Şahin, Ahmet Bilgehan; Çubukcu, Erdem; Evrensel, Türkkan; Değirmencioğlu, Serkan; Demiray, Atike Gökçen; Yumuk, Perran Fulden; Alan, Özkan; Çıkman, Duygu İlke; Demirelli, Fuat Hulusi; Köstek, Osman; Gökyer, Ali; Doğan, Mutlu; Bal, Öznur; Çakar, Burcu; Gökmen, Erhan; Yamaç, Deniz; Korkmaz, Taner; Aliyev, Altay; Keskin, Özge; Urvay, Semiha; Buyukşimşek, Mahmut; Karadeniz, Cemile; Yıldız, Birol; Çınkır, Havva Yeşil; Demir, Hacer; Beypınar, İsmail; Karacin, Cengiz; Eser, Kadir; Baykara, Meltem; Kılıçkap, Saadettin; Okutur, Kerem; Bulut, Gülcan; Alkan, Ali; Arpacı, Erkan; Pilancı, Kezban Nur; Demir, Atakan; Işık, Deniz; Yıldırım, Nilgün; ŞAHİN, AHMET BİLGEHAN; ÇUBUKÇU, ERDEM; EVRENSEL, TÜRKKAN; 0000-0002-7846-0870 ; AAM-4927-2020; JGT-4101-2023 ; EXZ-0745-2022Aim The aim of this study is to evaluate the efficacy and toxicity of trastuzumab emtansine (T-DM1) in cases with metastatic breast cancer (mBC) in different lines of treatment. Method Retrospective analysis of T-DM1 results of human epidermal growth factor receptor 2 (Her2) positive 414 cases with mBC from 31 centers in Turkey. Findings Except 2, all of the cases were female with a median age of 47. T-DM1 had been used as second-line therapy in 37.7% of the cases and the median number of T-DM1 cycles was 9. Progression-free survival (PFS) and overall survival (OS) times were different according to the line of treatment. The median OS was found as 43, 41, 46, 23 and 17 months for 1st, 2nd, 3rd, 4th and 5th line, respectively (p = 0.032) while the median PFS was found as 37, 12, 8, 8 and 8 months, respectively (p = 0.0001). Treatment was well tolerated by the patients. The most common grade 3-4 adverse effects were thrombocytopenia (2.7%) and increased serum gamma-glutamyl transferase (2%). Discussion The best of our knowledge this is the largest real-life experience about the safety and efficacy of T-DM1 use in cases with mBC after progression of Her2 targeted treatment. This study suggests and supports that T-DM1 is more effective in earlier lines of treatment and is a reliable option for mBC.Publication The immunohistochemical expression of c-met is an independent predictor of survival in patients with glioblastoma multiforme(Springer International Publishing Ag, 2014-02-01) Ölmez, O. F.; Çubukçu, E.; ÇUBUKÇU, ERDEM; Evrensel, T.; EVRENSEL, TÜRKKAN; Kurt, M.; Avcı, N.; Tolunay, S.; TOLUNAY, ŞAHSİNE; Bekar, Ahmet; BEKAR, AHMET; Deligönül, Adem; DELİGÖNÜL, ADEM; Hartavi, M.; Alkış, N.; Manavoğlu, O.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/ Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/NöroPatoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Radyasyon Onkolojisi Anabilim Dalı.; ABX-9081-2022; AAJ-1027-2021; AAA-3961-2020; AAI-1612-2021Because the outcome of glioblastoma multiforme (GBM) remains dismal, there is an urgent need for a better molecular characterization of this malignancy. The aim of this prospective study was to investigate the prognostic impact of the expression of c-mesenchymal-epithelial transition (c-Met) a receptor tyrosine kinase implicated in expression growth, survival, motility/migration, and invasion in GMB patients managed according to the established diagnostic and therapeutic protocols.Between May 2003 and March 2011, a total of 69 patients (33 males and 36 females; mean age: 52.2 +/- A 12.9 years, age range: 23-81 years) referred to our Department for the surgical removal of GBM were evaluated immunohistochemically for c-Met expression. Progression-free survival (PFS) and overall survival (OS) served as the main outcome measures.Compared with c-Met- subjects (n = 38), c-Met+ subjects (n = 31) had both a significantly lower OS (15.3 +/- A 2.3 vs. 22.6 +/- A 2.5 months, respectively, p < 0.01) and PFS (12.3 +/- A 2.1 vs. 19.1 +/- A 2.6 months, respectively, p < 0.05). After allowance for potential confounders, multivariate Cox regression analysis identified c-Met+ as an independent predictor of both OS (hazard ratio = 1.7; 95 % confidence interval = 1.2-1.9, p < 0.01) and PFS (hazard ratio = 1.6; 95 % confidence interval = 1.1-2.3, p < 0.05).Our findings suggest that c-Met immunohistochemical expression is an independent predictor of outcomes in patients with GBM treated by standard of care.
- «
- 1 (current)
- 2
- 3
- »