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  • Küçük Resim
    Öğe
    Can serial monitoring of serum Vascular Endothelial Growth Factor (VEGF), Nitric Oxide (NO), and Angiotensin II (ANGII) levels have predictive role during Bevacizumab treatment?
    (Int Scientific Information, Inc, 2014) Sumbul, Ahmet Taner; Disel, Umut; Sezgin, Nurzen; Sezer, Ahmet; Kose, Fatih; Besen, Ali Ayberk; Sumbul, Zehra
    Background: Standard treatment of colorectal cancer includes both cytostatic chemotherapy and targeted therapies. Bevacizumab, targeting the VEGF receptor, is one of the primary targeted therapies that achieve better response rate and survival rate as compared to combination chemotherapy. To the best of our knowledge, there is no established single marker that can be used as a predictive marker in bevacizumab therapy. Material/Methods: We enrolled 24 patients with the diagnosis of metastatic colorectal cancer in our study. During the study, 2 blood samples were drawn from patients before the first cycle and after the sixth cycle of bevacizumab therapy. Serum levels of VEGF, ANG II, and NO were recorded. Results: While the change across VEGF levels was found to be a statistically significant decreasing trend (p=0.009), this decrease was not found to be correlated with treatment response and hypertension development. Additionally, no statistically significant difference was found in terms of NO and ANG II levels. Conclusions: This study showed a significant decrease in serum VEGF, but failed to show a significant change in NO and ANG II levels during bevacizumab treatment. Although no significant correlation was found between the presence of hypertension and markers, most patients (83%) had an increase in their blood pressure. Our results suggest that dynamic monitoring of NO and ANG II, along with VEGF, may not be useful as predictive markers for bevacizumab treatment in colorectal cancer.
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    Öğe
    Clinicohistopathological features and treatment outcomes in testicular lymphomas: A single center experience.
    (Amer Soc Clinical Oncology, 2018) Sedef, Ali Murat; Kocer, Nazim Emrah; Besen, Ali Ayberk; Mertsoylu, Huseyin; Sezer, Ahmet; Sumbul, Ahmet Taner; Kose, Fatih
    [Abstract Not Available]
  • Küçük Resim
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    Concurrent Chemoradiotherapy with Vinorelbine plus Split-Dose Cisplatin may be an Option in Inoperable Stage III Non-Small Cell Lung Cancer: A Single-Center Experience
    (Int Scientific Information, Inc, 2015) Mertsoylu, Huseyin; Kose, Fatih; Sumbul, Ahmet Taner; Sedef, Ali Murat; Dogan, Ozlem; Besen, Ali Ayberk; Parlak, Cem
    Background: Concurrent chemoradiotherapy is the current standard treatment for inoperable stage III non-small cell lung cancer (NSCLC). In this study we aimed to investigate the efficacy and toxicity of CCRT with split dose of cisplatin (30 mg/m(2)) and vinorelbine (20 mg/m(2)) in patients with inoperable stage III NSCLC followed in our oncology clinic. Material/Methods: Medical records of 97 patients with inoperable stage III NSCLC treated with concurrent chemoradiotherapy with cisplatin-vinorelbine were retrospectively analyzed. Cisplatin (30 mg/m(2)) and vinorelbine (20 mg/m(2)) were administered on days 1, 8, 22, and 29 during radiotherapy. Two cycles of consolidation chemotherapy were given. All patient data, including pathological, clinical, radiological, biochemical, and hematological data, were assessed retrospectively using our database system. Results: Our study included 97 unresectable stage III NSCLC patients who were treated with CCRT. Median age was 58 years old (range 39-75) and 87 (89.7%) of the patients were men. ECOG performance score was 0-1 in 93 patients (95.9%). Squamous histology, the most common histology, was diagnosed in 46 patients (47.4%). Median follow-up time was 23.8 months. Median progression-free survival (PFS) and median overall survival time (OS) were 10.3 months and 17.8 months, respectively. Objective response rate and clinical benefit rate were 75.3% and 83.5%, respectively. Distant and local relapse rate were 57.1% and 42.9%, respectively. Hematological and non-hematological grade 3-4 toxicities were seen in 13 (13.4%) and 16 (16.5%) patients, respectively. Six (6.1%) patients died due to toxicity. Conclusions: The results of this study suggest that split-dose cisplatin may offer fewer grade III-IV toxicities without sacrificing efficacy and could be an option in patients with inoperable stage III NSCLC during CCRT. Similar to past studies, despite high response rate during CCRT, distant relapse is the major parameter that influences patient survival in long-term in NSCLC.
  • [ N/A ]
    Öğe
    Continuous distress in an Oncology Clinic in Turkey: Should we make use of the distress thermometer mandatory as a precautionary measure for physicians?
    (Zerbinis Medical Publ, 2014) Sumbul, Ahmet Taner; Sezer, Ahmet; Abali, Huseyin; Dicel, Umut; Gultepe, Ilhami; Besen, Ali Ayberk; Ozyilkan, Ozgur
    Purpose: To study the data on the distress scale points (DSP) of patients in oncology clinics in relation to age, the reasons for admission to the hospital, the educational status and the family support. Methods: Six hundred and fifty three patients diagnosed with malignancies were enrolled. All of the patients were asked to fill in a questionnaire that included data about their demographic characteristics, diagnoses, the cause of hospital admission and the educational status. The family support of each patient was observed and noted by clinicians and other healthcare providers during the clinical visits. Results: The mean patient age was 54.8 years (+/- SD 13.7). Of the patients 314 (48.1%) were male and 339 (51.9%) female. The median DSP for the group that included patients <35 years of age was 3; this was 5 for the 36-49 age group, 4 for the 50-69 age group and 4.5 for the >70 age group. A statistically significant difference in DSP between these groups was noticed (p=0.035). The DSP for patients <35 years of age was lower than that of the other age groups. The median DSP for the patients presenting to the outpatient clinic for adjuvant therapy was 5; this was 5 for patients presenting for palliative therapy, and 3 in the active surveillance group, and a statistically significant relationship was determined between the DSP and the reason for admission to the outpatient clinic (p<0.001). The patients that had presented to the outpatient clinic for active surveillance had statistically significantly lower DSP compared to the other groups (p<0.05). Conclusions: Distress in oncology clinics seems to be continuous; thus, the use of distress thermometer as a precautionary measure for distress development in patients with malignancies should be mandatory to help medical oncologists understand the psychosocial needs of their patients and start to treat them as a human beings.