Browsing by Author "Saglam, Esra Kaytan"

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Changes in radiotherapy practice during COVID-19 outbreak in Turkey: A report from the Turkish Society for Radiation Oncology
(ELSEVIER IRELAND LTD, 2020-01-01) Anacak, Yavuz; Onal, Cem; Ozyigit, Gokhan; Agaoglu, Fulya; Akboru, Halil; Akyurek, Serap; Gursel, Bilge; Igdem, Sefik; Yalman, Deniz; Yildiz, Ferah; Saglam, Esra Kaytan
LGALS3 and AXIN1 gene variants playing role in the Wnt/beta-catenin signaling pathway are associated with mucinous component and tumor size in colorectal cancer
(ASSOC BASIC MEDICAL SCI FEDERATION BOSNIA \& HERZEGOVINA SARAJEVO, 2016-01-01) Korkmaz, Gurbet; Horozoglu, Cem; Arikan, Soykan; Gural, Zeynep; Saglam, Esra Kaytan; Turan, Saime; Ozkan, Nazli Ezgi; Kahraman, Ozlem Timirci; Yenilmez, Ezgi Nurdan; Duzkoylu, Yigit; Dogan, Mehmet Baki; Zeybek, Umit; Ergen, Arzu; Yaylim, Ilhan
The Wnt pathway alterations have been identified in colorectal and many other cancer types. It has been reported that galectin-3 (which is encoded by the LGALS3 gene) alters the signaling mechanism in the Wnt/beta-catenin pathway by binding to beta-catenin in colon and other cancers. AXIN1 is mainly responsible for the assembly of the beta-catenin destruction complex in the Wnt pathway. This study investigated the relationship of rs4644 and rs4652 variants of the LGALS3 gene and rs214250 variants of the AXIN1 gene to histopathological and clinical properties. Our study included a total of 236 patients, of whom 119 had colorectal cancer (42 women, 77 men) and 117 were healthy controls. Polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) and allele-specific oligonucleotide (ASO) PCR methods were used. In addition, the serum galectin-3 level was studied with the enzyme-linked immunosorbent assay (ELISA) method. For the rs4644 variant of the LGALS(3) gene, the CC genotype a mucinous component was significantly more common than those without a mucinous component (p=0.026). C allele frequency of the rs214250 variant of the AXIN1 gene was significantly correlated to tumor size in the advanced tumor stage (p=0.022). The CCAACT haplotype was more common in colorectal cancer patients (p=0.022). Serum galectin-3 level was higher in the patient group compared to the control group (5.9 +/- 0.69 ng/ml vs. 0.79 +/- 0.01 ng/ml
National Multi-Center Observational Retrospective Study to Understand Treatment Patterns and Outcomes for Stage III Non-Small Cell Lung Cancer Patients in Turkey: Turkish Society for Radiation Oncology Study, STONE Trial
(AKAD DOKTORLAR YAYINEVI, 2022-01-01) Onal, Cem; Demiral, Ayse Nur; Atalar, Banu; Yalman, Deniz; Dagoglu, Nergiz; Hurmuz, Pervin; Erpolat, Petek; Akyurek, Serap; Gul, Sute Karabulut; Berber, Tanju; Guler, Ozan Cem; Umay, Cenk; Sert, Fatma; Karahacioglu, Eray; Birgi, Sumerya Duru; Yaprak, Gokhan; Saglam, Esra Kaytan
This study investigated treatment patterns and outcomes in patients with inoperable stage III non-small cell lung cancer (NSCLC) treated with radiotherapy (RT) in Turkey. We included 492 patients with stage III NSCLC in this multi-center retrospective study. Pa-tient demographics, clinical characteristics, and clinical treatment patterns from the time of the initial diagnosis to disease progression were recorded. Additionally, the prognostic factors predicting overall survival (OS) and progression-free survival (PFS) were analyzed. For the initial treatment, 429 patients (89.2\%) received chemotherapy and RT, whereas 53 patients (10.8\%) were treated only with RT. The first disease progression occurred in 288 patients (58.4\%) at 9.3 months (median) after the initial treatment, and 64.6\% re-ceived treatment after first progression. The second disease progression occurred in 30 patients, and 20 patients (66.7\%) received treatment. Median OS and PFS were 27.0 months and 13.4 months, respectively. Age (p< 0.001), stage (p= 0.04), poor performance score (PS) (p= 0.03) and RT doses (p= 0.002) were independent predictors for OS and PFS in our multivariate analysis. Additional significant predictors for OS in the multivariate analysis were gender (p= 0.004), treatment period (0.02), and irradiation technique (p= 0.02). Disease progression occurred in nearly 58\% of the patients, and one-third of these patients remained untreated during the disease progression. These findings indicate a need for additional treatment options in patients with unresectable stage III NSCLC with high-risk features, namely older age, stage IIIB disease, poor PS, and lower RT doses.
Outcomes of patients with anal cancer treated with volumetric-modulated arc therapy or intensity-modulated radiotherapy and concurrent chemotherapy
(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2021-01-01) Yucel, Serap; Kadioglu, Huseyin; Gural, Zeynep; Akgun, Zuleyha; Saglam, Esra Kaytan
Aims: To evaluate the results of chemoradiation with intensity-modulated radiation therapy (IMRT) or volumetric-modulated arc therapy (VMAT) for the treatment of anal canal cancer patients at three institutions that had advanced devices. Materials and Methods: A retrospective analysis was performed for patients treated with 5-fluorouracil and mitomycin-based chemotherapy and IMRT or VMAT for anal cancer from 2011 to 2013. Complete response (CR) rates, colostomy-free survival (CFS), disease-free survival (DFS), overall survival (OS), and toxicities were investigated. Toxicities were evaluated with the Common Terminology Criteria for Adverse Events, Version 3.0. Results: Fifteen patients were included in the analysis. The majority of patients had T2 (53.3\%) and N0 (40\%) disease according to the staging system that was developed by the American Joint Committee on Cancer. CR was observed in 14 patients (93\%), and the median follow-up was 26 months (13-42 months). The 3-year CFS, DFS, and OS were 86\%, 86\%, and 88\%, respectively. Acute Grade 3 toxicities were observed as 6\% of hematological, 26\% of gastrointestinal, and 26\% of dermatological. Conclusion: Early results confirm that IMRT or VMAT for anal cancer treatment reduces acute toxicities while maintaining high control rates.