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Demircan V, Acar E, Senturk E, Guzel C, Eroglu Arkoc N, Akyurek N, Ozturk F, Dincbas F, Akmansu M. 183P Predictor value of PD-L1 for radiotherapy response in locally advanced non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.02.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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2
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Gurler F, Aktürk Esen S, Kurt İnci B, Sutcuoglu O, Uçar G, Uncu D, Turhan N, Akyurek N, Özdemir N, Özet A, Yazıcı O. 570P Retrospective analysis of PDL-1, LAG3, TIM3, OX40L and MSI status in gastroenteropancreatic neuroendocrine tumors (GEP-NETs). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Akyurek N, Ercan C, Ekinci O. EP1.14-22 Amplification and Overexpression of MET in Brain Metastases of Non-Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Pamukcuoglu M, Acar K, Celik B, Akyurek N, Pepeler M, Sucak G. Peripheral and bone marrow CD34+ cell levels on chronic myeloproliferative disease. Hematology 2016; 22:74-80. [DOI: 10.1080/10245332.2016.1232546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- M. Pamukcuoglu
- Department of Hematology, Ankara Numune Education and Research Hospital, Ankara, Turkey
| | - K. Acar
- Department of Hematology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - B. Celik
- Department of Biostatistics, Faculty of Health Sciences, Gazi University, Ankara, Turkey
| | - N. Akyurek
- Department of Pathology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - M.S. Pepeler
- Department of Hematology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - G.T. Sucak
- Department of Hematology, Faculty of Medicine, Medical Park University, İstanbul, Turkey
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5
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Yavas G, Yavas C, Akyurek N. Postmastectomy radiation therapy in locally advanced breast cancer. Exp Oncol 2013; 35:258-266. [PMID: 24382435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Despite wide efforts for early detection of breast cancer using screening mammography, locally advanced breast carcinomas account for a remarkable proportion of all breast carcinomas, particularly in developing countries. Locally advanced breast cancer may have widely different clinical and biological features. Radiotherapy plays an important role in the management of locally advanced breast cancer. Postmastectomy radiotherapy has been shown to significantly reduce the risk of loco-regional failure and to improve disease free survival as well as overall survival in high-risk women with breast cancer. This review article summarizes the data from randomized trials revealing a significant benefit from postmastectomy radiation therapy in patients with locally advanced disease.
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Affiliation(s)
- G Yavas
- Department of Radiation Oncology, Faculty of Medicine, Selcuk University, Konya 42075 Turkey
| | - C Yavas
- Department of Radiation Oncology, Konya Training and Research Hospital, Konya 42090 Turkey
| | - N Akyurek
- Department of General Surgery, Faculty of Medicine, Gazi University, Besevler, 06510, Ankara, Turkey
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Kaya AO, Gunel N, Benekli M, Akyurek N, Buyukberber S, Tatli H, Coskun U, Yildiz R, Yaman E, Ozturk B. Hypoxia inducible factor-1 alpha and carbonic anhydrase IX overexpression are associated with poor survival in breast cancer patients. J BUON 2012; 17:663-668. [PMID: 23335522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
PURPOSE Hypoxia is common in many solid tumors such as breast, head-neck, and soft tissue malignancies. Hypoxia causes overexpression of hypoxia inducible factor-1 alpha (HIF-1α) and carbonic anhydrase IX (CA IX) which are associated with unfavorable prognosis in breast cancer. In our study, we evaluated HIF-1α and CA IX expression in patients with breast cancer. METHODS Between June 1996 and June 2008, 111 women with breast cancer were evaluated. Estrogen receptor (ER) and progesterone receptor (PR) status and Her2/ neu expression were evaluated by immunohistochemical methods. Her-2/neu expression was also assessed by FISH method when needed. Two groups were created: ER and PR positive, Her-2/neu negative (group 1, n=56); and ER and PR negative, Her-2/neu positive (group 2, n=55). HIF-1α and CA IX expressions were investigated in both groups and results were compared. In addition, we investigated the association between HIF-1α and CA IX expressions with stage, grade, lymph node metastasis, tumor size, menopause status and survival. RESULTS Median patient age in group 1 was 52 years (range 34-77), and in group 2 47 years (range 27-83). HIF-1α expression was detected in 26 (46.4%) of group 1 and in 46 (83.6%) of group 2 patients (p=0.0001). CA IX expression was detected in 25 (46.4%) of group 1 and in 37 (67.3%) of group 2 patients (p7equals;0.0137rpar;. In group 1, median disease free survival (DFS) was 97 months and in group 2 46 months (p=0.0308). In group 1, median overall survival (OS) was 108 months and in group 2 75 months (p=0.0339). CONCLUSION HIF-1α and CA IX overexpressions are observed more often in ER and PR negative, Her-2/neu positive breast cancer and are associated with poor survival.
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Affiliation(s)
- A O Kaya
- Gazi University, School of Medicine, Department of Medical Oncology, Ankara, Turkey.
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Demirag F, Cakir E, Aydin E, Kaya S, Akyurek N. Ectopic primary B cell lymphoma of the thyroid presenting as an anterior mediastinal mass. A case report. Acta Chir Belg 2009; 109:802-4. [PMID: 20184075 DOI: 10.1080/00015458.2009.11680543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Ectopic thyroid tumours arising in the mediastinum without connection to the cervical thyroid gland are very rare. Follicular adenoma, papillary carcinoma and follicular carcinoma in the mediastinum has been reported, but primary ectopic thyroid B cell lymphoma has not been reported previously. We report mediastinal primary ectopic thyroid large B cell lymphoma in an 80-year-old man. Differential diagnosis from primary mediastinal large B cell lymphoma and clinicopathologic features are discussed.
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Kaya AO, Gunel N, Benekli M, Akyurek N, Buyukberber S, Tatli H, Coskun U, Yildiz R, Yaman E, Ozturk B. Association of hypoxia inducible factor-1 alpha and carbonic anhydrase IX overexpression and survival in HER2/neu positive hormone-unresponsive breast cancer patients. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e22078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e22078 Background: Hypoxia is common in solid tumors with overexpression of hypoxia inducible factor-1 alpha (HIF-1 alpha) and carbonic anhydrase IX (CA IX). In our study, we evaluated HIF-1alpha and CA IX expression in Her-2/neu positive hormone- unresponsive breast cancer patients. Methods: One hundred and eleven patients with operable breast cancer were identified who had paraffin-embedded tissue blocks available. Estrogen and progesterone receptors and Her-2/neu expression were evaluated by immunohistochemistry (IHC). FISH was used for IHC 2+ cases. We assigned two groups with 56 patients who have ER and PR receptor positive, Her-2/neu negative (group 1) and with 55 patients who have ER and PR negative, Her-2/neu positive (group 2). HIF 1 alpha and CA IX expressions were investigated and results were compared for both groups. Additionally, we investigated the association between HIF 1 alpha and CA IX expressions with stage, grade, lymph node metastasis, tumor dimension and menopause status. Results: Median age of the patients was 52 years (range, 34–77) in group 1 and 47 years (range, 27–83) in group 2. Nuclear HIF-1alpha expression was detected in 26 (46.4%) and 46 patients (83.6%) in group 1 and 2, respectively (p<0.0001). Membranous CA IX expression was detected in 25 (46.4%) and 37 (67.3%) patients in group 1 and 2, respectively (p<0.013). In group 1, median disease free survival (DFS) has not been reached. In group 2, median DFS was 46 months (95%CI: 42.98–49.02) (p= 0.0308). In group 1, median overall survival (OS) was 108 months (95%CI: 90.65–125.35) whereas in group 2, median OS was 75 months (95 % CI: 64.94- 85.06) (p= 0.0339). Conclusions: HIF-1 alpha and CA IX overexpressions were more frequently observed in ER and PR negative, Her-2/neu positive breast cancer. This was associated with shorter disease-free and overall survival. No significant financial relationships to disclose.
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Affiliation(s)
- A. O. Kaya
- Gazi University School of Medicine, Ankara, Turkey
| | - N. Gunel
- Gazi University School of Medicine, Ankara, Turkey
| | - M. Benekli
- Gazi University School of Medicine, Ankara, Turkey
| | - N. Akyurek
- Gazi University School of Medicine, Ankara, Turkey
| | | | - H. Tatli
- Gazi University School of Medicine, Ankara, Turkey
| | - U. Coskun
- Gazi University School of Medicine, Ankara, Turkey
| | - R. Yildiz
- Gazi University School of Medicine, Ankara, Turkey
| | - E. Yaman
- Gazi University School of Medicine, Ankara, Turkey
| | - B. Ozturk
- Gazi University School of Medicine, Ankara, Turkey
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Abstract
Candidal vertebra osteomyelitis is a rare condition which occurs primarily in immunocompromised patients. We report a 14-year-old girl with factor X deficiency who developed candida vertebra osteomyelitis during home therapy. The microorganism was probably from a contaminated peripheral cannula used for infusion of factor concentrate. This is the first such case in bleeding disorders to our knowledge.
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Affiliation(s)
- T Gursel
- Department of Paediatrics, Medical School, Gazi University, Ankara, Turkey.
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Uner A, Ebinc FA, Akyurek N, Unsal D, Mentes BB, Dursun A. Vascular endothelial growth factor, c-erbB-2 and c-erbB-3 expression in colorectal adenoma and adenocarcinoma. Exp Oncol 2005; 27:225-8. [PMID: 16244586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
AIM To analyze vascular endothelial growth factor (VEGF), c-erbB-2 and c-erbB-3 expression and to evaluate their relation to clinicopathologic parameters and pathogenesis of colorectal carcinoma. METHODS Sections of adenoma, intramucosal carcinoma and adenocarcinoma were evaluated by immunohistochemistry in 85 malignant and 37 benign colorectal neoplasms for the expression of VEGF, c-erbB-2 and c-erbB-3 considering clinicopathological variables. RESULTS VEGF was detected in comparable percentages of all neoplasm types while c-erbB-2 expression was detectable more frequently in adenoma than adenocarcinoma cases (65% vs 43%). Except for the correlation of c-erbB-3 expression with Dukes' staging, there was no correlation between the studied markers and grade of differentiation, Dukes' stage and localization of colorectal adenocarcinoma. c-erbB-3 expression was seen more frequently in tubular adenomas, while c-erbB-2 expression was higher in tubulovillous and villous types. These differences were not statistically significant. The presence of distant metastasis and angiolymphatic invasion were identified as independent predictors of survival. A positive correlation was found between VEGF expression and lymphatic vessel invasion and regional lymph node involvement. CONCLUSION These results suggest that VEGF, c-erbB-2, c-erbB-3 expression does not have prognostic value in colorectal cancer. VEGF expression may be implicated in the lymph node metastasis.
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Affiliation(s)
- A Uner
- Department of Medical Oncology, Faculty of Medicine, Gazi University, Besevler 06510, Ankara, Turkey.
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Unsal D, Uner A, Akyurek N, Erpolat OP, Dursun A, Pak Y. MMP-9 expression as a predictor of tumor response in patients with locally advanced rectal cancer undergoing preoperative chemoradiotherapy. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.9606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- D. Unsal
- Gazi Univ Faculty of Medicine, Ankara, Turkey
| | - A. Uner
- Gazi Univ Faculty of Medicine, Ankara, Turkey
| | - N. Akyurek
- Gazi Univ Faculty of Medicine, Ankara, Turkey
| | | | - A. Dursun
- Gazi Univ Faculty of Medicine, Ankara, Turkey
| | - Y. Pak
- Gazi Univ Faculty of Medicine, Ankara, Turkey
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Abstract
Omental pregnancy is a very rare form of ectopic pregnancy. Here we presented a case of primary omental pregnancy diagnosed at surgical exploration. A 28 year old woman submitted with severe abdominal pain, without any delay of menstruation. History of the patient revealed no use of contraceptive method. There was no gestational sac in the endometrial cavity and no tubal ring in the adnexa, but free peritoneal fluid in the pouch of Douglas was detected at ultrasonography. Laparotomy was done according to pre-operative diagnosis of ruptured tubal pregnancy. Bilateral tubes and ovaries were intact; omental pregnancy was detected and partial omentectomy was performed. Although 16 cases of omental pregnancy (mostly secondary) were reported in the literature, herein we describe a primary omental pregnancy without adnexial involvement.
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Affiliation(s)
- M A Onan
- Department of Obstetrics and Gynecology, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey.
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