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Öğe Clinicopathological Characteristics and Prognosis of Patients According To Recurrence Time After Radical Nephrectomy for Localized Renal Cell Carcinoma: A Multicenter Study of Anatolian Society of Medical Oncology (ASMO)(Int Inst Anticancer Research, 2014) Bozkurt, Oktay; Inanc, Mevlude; Hacibekiroglu, Ilhan; Esbah, Onur; Seker, Metin; Ulas, Arife; Aydin, KubraAim: We investigated the clinicopathological features in patients with recurrent RCC within 5 years or more than 5 years after nephrectomy and determined predictors of survival and response treatment after recurrence. Materials and Methods: We retrospectively evaluated 144 patients with disease recurrence; 73 had recurrence more than 5 years after radical nephrectomy. We compared clinicopathological characteristics in patients with disease recurrence before vs. after 5 years. In addition, we investigated predictors of survival and response to treatment after recurrence. Results: Seventy-one patients (49%) were diagnosed with recurrence within 5 years after radical nephrectomy (early recurrence) and 73 patients (51%) were diagnosed with recurrence more than 5 years after radical nephrectomy (late recurrence). Fuhrman grade, tumor necrosis and lymphovascular invasion were statistically significantly different between the two groups (p<0.001, p=0.013, p=0.026, respectively). The late recurrence patients were significantly associated with the Memorial Sloan Kettering Cancer Center (MSKCC) favorable risk group compared to patients with early recurrence (p=0.001). From the time of disease recurrence, median Overall Survival (OS) was 36.0 (95% Confidence Interval (CI) 30.7-412) months in the late recurrence group, and 19 (95% CI 15.4-22.5) months in the early recurrence group (p=0.01). The median Progression Free Survival (PFS) was 6 (95% CI 3.87-8.12) months in the early recurrence group, and 18 (95% CI 15.4-20.5) months for the late recurrence group (p<0.001). Conclusion: Early recurrence was significantly associated with Fuhrman grade 3-4, tumor necrosis, lymphovascular invasion, MSKCC poor- risk group compared to patients with late recurrence. The study also demonstrated a potential prognostic value of late recurrence in terms of PFS and OS.Öğe IS SECOND LINE SYSTEMIC CHEMOTHERAPY BENEFICIAL IN PATIENTS WITH NON-SMALL CELL LUNG CANCER (NSCLC)? : A MULTICENTER DATA EVALUATION OF ANATOLIAN SOCIETY OF MEDICAL ONCOLOGY (ASMO)(Lippincott Williams & Wilkins, 2013) Odabas, Hatice; Ulas, Arife; Aydin, Kubra; Inanc, Mevlude; Aksoy, Asude; Yazilitas, Dogan; Turkeli, Mehmet[Abstract Not Available]Öğe Is second-line systemic chemotherapy beneficial in patients with non-small cell lung cancer (NSCLC)? A multicenter data evaluation by the Anatolian Society of Medical Oncology(Sage Publications Ltd, 2015) Odabas, Hatice; Ulas, Arife; Aydin, Kubra; Inanc, Mevlude; Aksoy, Asude; Yazilitas, Dogan; Turkeli, MehmetPatients with advanced non-small cell lung cancer (NSCLC) generally require second-line treatment although their prognosis is poor. In this multicenter study, we aimed to detect the characteristics related to patients and disease that can predict the response to second-line treatments in advanced NSCLC. Data of 904 patients who have progressed after receiving first-line platinum-based chemotherapy in 11 centers with the diagnosis of stage IIIB and IV NSCLC and who were evaluated for second-line treatment were retrospectively analyzed. The role of different factors in determining the benefit of second-line treatment was analyzed. Median age of patients was 57 years (range 19-86). Docetaxel was the most commonly used (20.9 %, n = 189) single agent, while gemcitabine-platinum was the most commonly used (6.7 %, n = 61) combination chemotherapy regimen in second-line setting. According to survival analysis, median progression-free survival after first-line treatment (PFS2) was 3.5 months (standard error (SE) 0.2; 95 % confidence interval (CI), 3.2-3.9), median overall survival (OS) was 6.7 months (SE 0.3; 95 % CI, 6.0-7.3). In multivariate analysis, independent factors affecting PFS2 were found to be hemoglobin (Hb) level over 12 g/dl and treatment-free interval (TFI) longer than 3 months (p = 0.006 and 0.003, respectively). Similarly, in OS analysis, Hb level over 12 g/dl and time elapsed after the first-line treatment that is longer than 3 months were found to be independent prognostic factors (p = 0.0001 and 0.045, respectively). In light of these findings, determining and using the parameters for which the treatment will be beneficial prior to second-line treatment can increase success rate.Öğe Results of observational study to determine K-ras mutation rates in 2458 patients with metastatic colorectal cancer in Turkey (TURKRAS Study).(Amer Soc Clinical Oncology, 2015) Gumus, Mahmut; Dane, Faysal; Karabulut, Bulent; Uygun, Kazim; Aydin, Kubra; Orhan, Bulent; Oksuzoglu, Berna[Abstract Not Available]
