Yazar "Berk, V." seçeneğine göre listele

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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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    Gemcitabine and Cisplatin Combination Chemotherapy in Triple Negative Metastatic Breast Cancer Previously Treated with a Taxane/Anthracycline Chemotherapy; Multicenter Experience
    (Aepress Sro, 2012) Ozkan, M.; Berk, V.; Kaplan, M. A.; Benekli, M.; Coskun, U.; Bilici, A.; Gumus, M.
    This study was aimed to establish clinical efficacy and tolerability of gemcitabine and cisplatin combination in patients with metastatic triple negative breast cancer progressing after anthracycline and taxane based chemotherapies. Thirty-three patients who were given cisplatin and gemcitabine for triple negative and metastatic breast cancer were evaluated retrospectively. A total of 141 cycles were administered with a median 4 cycles per patient. Median follow-up time was 14 months (range, 2-36 months). Objective response rate was 27.3%. Total clinical benefit of the combination was 48.4%. The estimated median progression free survival and median overall survival were 5 months and 14 months, respectively. The most common Grade 3 and 4 toxicity were neutropenia and thrombocytopenia observed in 10 (27.7%) and 9 (24.9%) patients, respectively. The combination of the gemcitabine and cisplatin after taxane/anthracycline is well tolerated and seems to be effective with acceptable toxicity profile.
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    Is lymph node ratio (LNR) having additional contribution for predict prognosis on pathologic lymph node staging in node -positive breast cancer patients?
    (Amer Assoc Cancer Research, 2016) Kaplan, M. A.; Odabasi, H.; Ozdemir, N.; Harputluoglu, H.; Aliustaoglu, M.; Berk, V.; Gunaydin, Y.
    [Abstract Not Available]
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    Outcome of 561 non-metastatic triple negative breast cancer patients: Multi-center experience from Turkey
    (Elsevier Sci Ltd, 2013) Budakoglu, B.; Altundag, K.; Berk, V.; Ozkan, M.; Algin, E.; Dogu, G. G.; Harputluoglu, H.
    [Abstract Not Available]
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    Prognostic factors in patients with advanced pancreatic cancer treated with gemcitabine alone or gemcitabine plus cisplatin: retrospective analysis of a multicenter study
    (Imprimatur Publications, 2012) Inal, A.; Kos, F. T.; Algin, E.; Yildiz, R.; Berk, V.; Unek, I. Tugba; Colak, D.
    Purpose: The majority of patients with pancreatic cancer present with advanced disease. Systemic chemotherapy for patients with pancreatic cancer has limited impact on overall survival (OS). Patients eligible for chemotherapy should be selected carefully. The aim of this study was to analyse prognostic factors for OS in advanced pancreatic cancer patients treated with first-line palliative chemotherapy with gemcitabine alone or gemcitabine plus cisplatin. Methods: We retrospectively reviewed 343 locally advanced or metastatic pancreatic cancer patients who were treated with gemcitabine or gemcitabine plus cisplatin as first-line chemotherapy between December 2000 and June 2011. Fifteen potential prognostic variables were chosen for analysis. Univariate and multivariate analyses were conducted to identify prognostic factors associated with OS. Univariate and multivariate statistical methods were used to determine prognostic factors. Results: Among the 15 variables of univariate analysis, 6 were identified to have prognostic significance: stage (p<0.001), cholestasis (p=0.02), weight loss, prior pancreatectomy, serum CEA level (p<0.001) and serum CA19-9 level (p<0.001). In addition, age, chemotherapy and liver metastasis were of borderline significance (p=0.06). Multivariate analysis (Cox proportional hazard model) included the 6 significant prognostic factors of univariate analysis and showed that stage was independent prognostic factor for OS, as were weight loss, and serum CEA level. Conclusion: Stage, weight loss, and serum CEA level were identified as important prognostic factors for OS in advanced pancreatic cancer patients. These findings may also facilitate pretreatment prediction of OS and can be used for selecting patients for treatment.
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    Sequential adjuvant docetaxel and anthracycline chemotherapy for node positive breast cancers: a retrospective study
    (Zerbinis Medical Publ, 2013) Akinci, M. Bulent; Algin, E.; Inal, A.; Odabas, H.; Berk, V.; Coskun, U.; Uyeturk, U.
    Purpose: Anthracyclines and taxanes are the most active agents in the adjuvant treatment of breast cancer (BC). They can be used simultaneously or sequentially. The optimal schedule and duration for their administration is unknown. We analyzed the efficacy of sequential adjuvant anthracycline and docetaxel administration in node positive BC patients. Methods: Node positive BC patients (N=539) from 6 medical oncology centers in Turkey who received sequential adjuvant anthracycline-based regimens and taxane chemotherapy were included in this study between 2006 - 2010. One-hundred and thirty-eight (25%) patients received 3 cycles of anthracycline-based chemotherapy followed by 3 cycles of docetaxel (3+3) and 401 (75%) patients received 4 cycles of anthracycline-based chemotherapy followed by 4 cycles of docetaxel (4+4). Prognostic factors analyzed were estrogen receptor (ER), progesterone receptor (PR), HER2, tumor grade, and nodal status in relation to disease free survival (DFS) and HER2 status in relation to overall survival (OS). Results: The patient median age was 48 years (range 18-79). Most common grade 3-4 toxicities were neutropenia, mucositis and arthralgia. No treatment-related toxic deaths were seen. With a median follow up of 26 months (range 1-115) 61 (11.3%) recurrences and 11 (2%) deaths were registered. Three-year DFS was 81% and OS 96% for all patients. There was no statistically significant difference between 3+3 and 4+4 groups in terms of survival (3-year DFS 88% and 79% [p=0.28] and OS 97% and 95% [p=0.60] respectively). Conclusion: Sequential chemotherapy with 4+4 cycles of anthracycline and docetaxel every 3 weeks is an acceptable regimen for adjuvant treatment of node positive BC patients. Duration of chemotherapy should be planned depending on prognostic factors. In this study there was no difference between 3+3 and 4+4 groups in DFS and OS despite the presence of good prognostic factors in the 3+3 group.