Ayfer Ay Eren
Cumhuriyet University
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Featured researches published by Ayfer Ay Eren.
Asian Pacific Journal of Cancer Prevention | 2014
Turgut Kacan; Nalan Akgül Babacan; Metin Seker; Birsen Yücel; Aykut Bahceci; Ayfer Ay Eren; Memet Fuat Eren; Saadettin Kilickap
BACKGROUND Although many prognostic factors have been identified for lung cancers, new ones are needed to determine the course of the disease. Recently, a high neutrophil to lymphocyte ratio (NLR) prior to surgery or treatment has been shown to be an indicator of prognosis for cancer. The aim of this study was to investigate the value of NLR as a prognostic factor and the correlation between NLR and other probable clinical prognostic factors in non small cell lung cancer patients prior to treatment. MATERIALS AND METHODS Data of patients who were diagnosed with non-small cell lung cancer in our institution were retrospectively reviewed. Demographic and clinicopathologic characteristics were recorded. NLR was calculated before the application of any treatment. RESULTS A total of 299 patients, 270 (90%) males and 29 (10%) females, were included in the study. Age (p<0.001) stage (p<0.001), Eastern Cooperative Oncology Group performance status (p<0.001), weight loss (p<0.001), anemia (p<0.001), histopatology (p<0.001), NLR ≥ 3 (p=0.048), NLR ≥ 4 (p=0.025) and NLR ≥ 5 (p=0.018) were found to be the prognostic factors. Age, anemia, Eastern Cooperative Oncology Group performance status, the stage, NLR (≥ 5) were an independent prognostic factors. There was a positive correlation between NLR and the Eastern Cooperative Oncology Group performance status (0.23, p=0.001), the C reactive protein levels (r=0.36, p<0.001). CONCLUSIONS Prior to treatment high NLR was found as an independent poor prognosis factor. Besides, NLR correlated with Eastern Cooperative Oncology Group performance status and the C reactive protein levels.
Asian Pacific Journal of Cancer Prevention | 2013
Birsen Yücel; Nalan Akgül Babacan; Turgut Kacan; Ayfer Ay Eren; Mehmet Fuat Eren; Seher Bahar; Mustafa Gürol Celasun; Mehmet Metin Seker; Zekiye Hasbek
BACKGROUND This study aimed to determine the demographical distribution, survival and prognostic factors for neuroendocrine tumors monitored in our clinic. MATERIALS AND METHODS Data for 52 patients who were admitted to Cumhuriyet University Medical Faculty Training Research and Practice Hospital Oncology Center between 2006 and 2012 and were diagnosed and treated for neuroendocrine tumors were investigated. RESULTS Of the total, 30 (58%) were females and 22 (42%) were males. The localization of the disease was gastroenteropancreatic in 29 (56%) patients and other sites in 23 (44%). The most frequently involved organ in the gastroenteropancreatic system was the stomach (n=10, 19%) and the most frequently involved organ in other regions was the lungs (n=10, 19%). No correlation was found between immunohistochemical staining for proteins such as chromogranin A, synaptophysin, and NSE and the grade of the tumor. The patients were followed-up at a median of 24 months (1-90 months). The three-year overall survival rate was 71%: 100% in stage I, 88% in stage II, 80% in stage III, and 40% in stage IV. The three-year survival rate was 78% in tumors localized in the gastroenteropancreatic region, and 54% in tumors localized in other organs. In the univariate analysis, gender, age, performance status of the patients, grade, localization, surgical treatment, and neutrophil/ lymphocyte ratio (≤ 5 versus >5) affected the prognosis of the patients. CONCLUSIONS Most of the tumors were localized in the gastroenteropancreatic region, and the three-year survival rate in tumors localized in this region was better than the tumors localized in other sites. Surgical treatment was a positive independent prognostic factor, whereas Grade 3 and a neutrophil/lymphocyte ratio of >5 were negative independent prognostic factors.
Asian Pacific Journal of Cancer Prevention | 2014
Nalan Akgül Babacan; Birsen Yücel; Saadettin Kilickap; Mehmet Metin Seker; Turgut Kacan; İlknur Koç Olçaş; Ayfer Ay Eren; Hatice Odabas
BACKGROUND Lung cancer is the most common cause of cancer-related death worldwide. The incidence of lung cancer is aproximately 7-8 thousand percent in Turkish women. In this study, we aimed to evaluate the clinical, pathological properties and survival data of female patients with lung cancer who were treated in our center. MATERIALS AND METHODS From 2007 to 2012, 50 women with lung cancer were enrolled. Patient data were evaluated retrospectively. RESULTS The median age was 61 (40-81). Forty patients (80%) were diagnosed with non small cell lung cancer (NSCLC), 10 patients (20%) were small cell carcinoma (SCC). Twelve (24%) patients were smokers and 13 of 16 non-smokers had a history of exposure to asbestos. The most common histologic subtype was adenocarcinoma (46%) and this accounted for 71% in patients with exposure to asbestos. The most common initial Eastern Cooperative Oncology Group (ECOG) performance score was 1 (24 patients, 48%) and initial stage was IV (25 patients, 50%) in the study group. During the median 15 months (1-96 months) followup period: 1 year overall survival (OS) was 68%, 2year overall survival was 36% and the median survival time was 19 months. According to univariate analysis, poor ECOG performance status, advanced stage, anemia and weight loss at time of diagnosis were negative prognostic factors. However, adenocarcinoma sub-type was a positive prognostic factor. CONCLUSIONS In this study NSCLC sub-type, poor ECOG performance score, advanced stage, anemia and weight loss were prognostic factors in Turkish women with lung cancer.
Journal of Medical Updates | 2013
Birsen Yücel; Ayfer Ay Eren; Eda Erdiş; Nalan Akgül Babacan; Emine Elif Altuntaş
Objective: Our aim was to determine the treatment results, side effects and the prognostic factors affecting survival in patients with larynx cancer treated in our clinic. Methods: Data of a total of 90 patients with larynx carcinoma were included in the study. The patients’ performance scores were evaluated according to the Eastern Cooperative Oncology Group (ECOG) system. Results: Eighty-seven (97%) patients were male and three patients (3%) were female. The median age of the patients was 59 (37-86) years. Early-stage, locally advanced stage, and metastatic disease were detected in 43, 55, and 2% of the patients, respectively. Laryngeal cancers were observed in the glottic (53%), and supraglottic (47%) regions. Performance score (p=0.022), grade (p=0.033), lymph node metastasis (p=0.001), T stage (p=0.034) and disease stage (p=0.007) were significantly unfavourable in supraglottic cancers compared to glottic cancers. Recurrence was observed in 17% of the patients in a median 15 (range: 5-96) months. Distant metastasis was observed in 12% of the patients in a median 17 (range: 1-155) months. The factors affecting survival were the presence of comorbidities (p=0.032), performance status (p=0.022), hemoglobin level (p=0.003), T stage (p=0.006), disease stage (p=0.011), and weight loss (p=0.002). When RT- and CRT-associated side effects were compared, the incidence of adverse effects such as mucositis (p<0.001), nausea/vomiting (p<0.001), weight loss (p=0.005), neutropenia (p=0.001), and anemia (p=0.003) in patients under chemoradiotherapy was significantly higher than those associated with radiotherapy.
Journal of Analytical Oncology | 2017
Mehmet Fuat Eren; Ayfer Ay Eren; Birsen Yücel; Seher Bahar; Ahmet Cinkaya; Rayna K. Matsuno; Nuran Beşe
Background : Aim of this study is to classify intrinsic subtypes and evaluate the differences in clinical/pathological characteristics and survival outcomes among the molecular types. Patients and Methods : Breast cancer subtypes were classified according to the 2013 St. Gallen Consensus. Five molecular subtypes were determined, Luminal A, Luminal B-like HER2 negative, Luminal B-like HER2 positive, HER2 positive, and triple negative. Data was obtained from the records of patients with invasive breast cancer retrospectively. The differences in clinical/pathological parameters, overall survival and disease-free survival among the molecular subtypes were analyzed. The Kaplan-Meier method, log-rank test and Cox regression tests were used to compare groups. Results : The median follow-up period is 48 months. The Luminal B-HER2 negative was the most prevalent type (26.6%). Patient demographics, tumor characteristics and survival data were analyzed. The Luminal A and Luminal B-HER2 negative subtypes had significantly higher overall survival and disease-free survival rates. Multivariate Cox analysis revealed that tumor stage, more than 3 positive axillary lymph node involvement, and breast cancer subtype as significant factors for overall survival and disease-free survival ( p<0.05 ). Triple Negative subtype had a higher relative hazard of local recurrence and distant metastasis (HR=2.69, 95% CI=1.47; 4.95). Conclusions : Breast cancer subtype has significant impact on overall survival and disease-free survival rates. While Luminal A and luminal B HER2 negative subtypes have better outcome, triple negative and HER2- subtypes remain poor.
Supportive Care in Cancer | 2014
Birsen Yücel; Ebru Atasever Akkaş; Yıllar Okur; Ayfer Ay Eren; Mehmet Fuat Eren; Hanife Karapınar; Nalan Akgül Babacan; Saadettin Kılıçkap
Archive | 2013
Turgut Kacan; Nalan Akgün Babacan; Birsen Yücel; Mehmet Metin; Mehmet Fuat Eren; Ayfer Ay Eren
Archive | 2013
Turgut Kacan; Nalan Akgün Babacan; Mehmet Metin; Birsen Yücel; Mehmet Fuat Eren; Mehmet Metin Şeker; B. Yücel; M. F. Eren; Ayfer Ay Eren; G. Gültekin
Archive | 2013
Birsen Yücel; Ayfer Ay Eren; Eda Erdifl; Nalan Akgül Babacan; Emine Elif Altuntafl
Cumhuriyet medical journal | 2013
Turgut Kacan; Saadettin Kilickap; Nalan Akgün Babacan; Mehmet Metin Şeker; Birsen Yücel; İlknur Koç Olçaş; Gülşah Gültekin; Mehmet Fuat Eren; Ayfer Ay Eren