Yazar "Cetin, B." seçeneğine göre listele

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    Adjuvant chemoradiotherapy in 450 patients with gastric cancer: The multicenter retrospective study.
    (Amer Soc Clinical Oncology, 2011) Kucukoner, M.; Isikdogan, A.; Bilici, M.; Tekin, S. B.; Uncu, D.; Cetin, B.; Dane, F.
    [Abstract Not Available]
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    The effects of variability of mean erythrocyte corpuscular volume (MCV) in patients with advanced stage gastrointestinal stromal tumor (GIST) using imatinib on progression free survival
    (Elsevier Sci Ltd, 2013) Cetin, B.; Tastekin, D.; Aktas, B.; Guler, T.; Kaplan, M. A.; Berk, V.; Gumusay, O.
    [Abstract Not Available]
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    Multiple primary malignant neoplasms: Multi-center results from Turkey
    (Imprimatur Publications, 2012) Babacan, N. A.; Aksoy, S.; Cetin, B.; Ozdemir, N. Y.; Benekli, M.; Uyeturk, U.; Kaplan, M. Ali
    Purpose: Multiple primary malignant neoplasms (MPMNs) are defined as a diagnosis of two or more independent primary malignancies of different histologies/origins in an individual. The frequency of MPMN is being increasing. In this study we aimed to determine the frequency and clinical features of second primary cancers (SPCs). Methods: From January 1990 to December 2010, patients with MPMNs were screened in 5 centers. Data were obtained retrospectively from hospital charts. Results: Three hundred seventy-seven patients with MPMNs were evaluated. The median age at initial cancer diagnosis was 61 years (range 18-88). The median age at second cancer was 64 years (range 20-89). The median time between two cancer diagnoses was 15 months (range 0-504). Male to female ratio was 1.44 (M/F 223/154). The most frequent initial cancer types were head and neck (54 patients, 14.3%), breast (54 patients, 14.3%), and colorectal (43 patients, 11.4%). The most frequent second cancer types were lung (76 patients, 20.2%), colorectal (39 patients, 10.3%) and breast (33 patients, 8.8%). The most common cancer pairs in females were breast-gynecologic cancers (15 patients, 9.7%), colorectal-breast cancers (9 patients, 5.8%) and breast-colorectal cancers (7 patients, 4.5%). The most common cancer pairs in males were head and neck-lung cancers (29 patients, 13%), bladder-lung cancers (9 patients, 4%), and bladder-prostate cancers (7 patients, 3%). The median follow up was 36 months (range 1-595). Conclusion: Physicians should be aware of SPCs probabilities. Newly developed suspicious lesions should be evaluated rigorously. Histopathologic evaluations of suspicious lesions for second tumors should be used extensively if needed. In our series, the most common pairs were breast-gynecologic cancers in females and head and neck-lung cancers in males.
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    Phase II study of lapatinib in combination with vinorelbine in patients with ErbB2-amplified recurrent or metastatic breast cancer
    (Amer Soc Clinical Oncology, 2011) Saip, P.; Eralp, Y.; Ozkan, M.; Karaca, H.; Benekli, M.; Cetin, B.; Isikdogan, A.
    [Abstract Not Available]
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    Phase II study of lapatinib in combination with vinorelbine in patients with HER2 positive recurrent or metastatic breast cancer: A multicentric Turkish Oncology Group (TOG) trial
    (Churchill Livingstone, 2013) Saip, P.; Eralp, Y.; Sen, F.; Karaca, H.; Ozkan, M.; Cetin, B.; Benekli, M.
    Background: The aim of this explorative phase II study was to evaluate the activity and safety of lapatinib in combination with intravenous vinorelbine in women with HER2 positive metastatic or recurrent breast cancer. Methods: Twenty-nine patients were enrolled. The primary objectives were response and clinical benefit (CB) rates, secondary objectives were toxicity, response duration and progression free survival. Patients received 1250 mg oral lapatinib continuously once daily and intravenous vinorelbine 20-25 mg/m(2) on days 1 and 8, every 3 weeks. Results: Although 25 patients were evaluable for response, according to intend to treat analysis of 28 patients; 14% had confirmed partial response (PR) and 36% had stable disease more than 24 weeks with a CB rate of 50%. Sixty four percent of the patients suffered from grade 3-4 hematologic and 18% from grade 3 extra-hematologic toxicities. Conclusion: The results of this trial provide evidence to further investigate the potential of this combination for patients unsuitable for trastuzumab or who become refractory to trastuzumab. (C) 2013 Elsevier Ltd. All rights reserved.
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    Prognostic analysis of patients with operable gastric cancer and tolerability to adjuvant radiochemotherapy
    (Aepress Sro, 2013) Kucukoner, M.; Arpaci, E.; Isikdogan, A.; Bilici, M.; Uncu, D.; Cetin, B.; Dane, F.
    The aim of this study is to evaluate the tolerability and toxicity of adjuvant chemoradiotherapy (CRT) and to analyze the prognosis in patients with operable gastric cancer. The retrospective analysis included 723 patients with operable gastric cancer; stage IB-IV (M0), received adjuvant CRT from 8 Medical Centers in Turkey between 2003 and 2010. The patients' age, sex, tumor localization, Lauren classification, grade and stage of the disease, type of dissection, the toxicity and tolerability status and survival rate were analyzed. All patients were divided into two groups as tolerable group to adjuvant CRT and intolerable group to adjuvant CRT. Among the patient, 73.9% had stage III-IVM0 disease; 61.0% had the intestinal type of gastric cancer, 51.1% had the distal type, and 61.4% had undergone D2 dissections. The number of patients who completed the entire course of the adjuvant CRT was 545 (75.4%). The median follow-up period was 20.8 months (range: 1.5-107 months). Overall Survival (OS) rates were 80% and 52%, while the relapse free survival (RFS) rates were 75% and 48% at 1 and 3 years, respectively. In the univariate analysis of the groups based on the the age defined as <65 or >= 65 (p=0.16 / p=0.003), Lauren classification (p=0.004 / p<0.001), localization of tumor (p=0.02 / p=0.04), tumor grade (p=0.06 / p=0.003), disease stage (p<0.001 / p<0.001), type of dissection (p=0.445 / p=0.043), presence or absence of toxicity (p=0.062 / p=0.077) and tolerability of the therapy (p=0.002 / p=0.001). In the cox regression analysis, tumor stage (Hazard Ratio (HR): 0.332; 95% confidence interval (CI): 0.195-0.566; p<0.001), and tolerability (HR: 0.516; 95% CI: 0.305-0.872; p=0.014), were found to be related with the OS. Tumor stage (HR: 0.318; 95% CI: 0.190-0.533; p=<0.001) and tolerability (HR: 0.604; 95% CI: 0.367-0.995; p=0.048) were observed to be statistically significant in terms of the RFS. We have observed that whether a patient can or cannot tolerate adjuvant CRT due to its toxicity is an independent prognostic factor besides the known prognostic factors like tumor stage and Lauren classification. We are of the opinion that the treatment of patients who cannot tolerate adjuvant CRT should be replaced with less toxic adjuvant therapies.