Browsing by Author "Urun, Yonca Yilmaz"

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Do Nutritional and Inflammatory Indices Predict Response in Geriatric Gastric Cancer Patients Treated With Neoadjuvant Flot Regimen
(Sage Publications inc, 2025) Urun, Yonca Yilmaz; Urun, Muslih
Introduction: Docetaxel-based chemotherapy is a standardized neoadjuvant treatment for gastric cancer. There are still no reliable indicators to predict tumor response and prognosis of geriatric patients prior to chemotherapy. The aim of our study was to investigate the value of pretreatment prognostic nutritional index (PNI), serum albumin, total lymphocyte, neutrophil-lymphocyte ratio (NLR), and platelet-lymphocyte ratio (PLR) in predicting the response to treatment in geriatric gastric cancer patients treated with FLOT (5-Fluorouracil, leucovorin, oxaliplatin, and docetaxel) regimen as neoadjuvant chemotherapy. Methods: A total of 91 geriatric gastric cancer patients (>= 65-year-old) who received a neoadjuvant FLOT regimen were retrospectively analyzed. Pretreatment data, including demographic characteristics, complete blood count, serum albumin level (g/dL), serum tumor markers (CEA and CA19-9), PNI values and other clinicopathological parameters, were collected. Independent sample t-tests and Mann-Whitney U tests were used to analyze quantitative independent data. In the analysis of independent qualitative data, the chi-squared test and Fischer's exact test were used when the chi-squared test conditions were not met. Results: The mean age was 69.9 +/- 4. There were 22 patients in the treatment-responsive group and 69 in the treatment-nonresponsive group. Serum albumin levels were significantly higher in the treatment-responsive group. The lymphocyte counts were significantly lower in the treatment-responsive group. Additionally, both disease-free survival and overall survival were significantly extended in patients who responded to treatment. Conclusion: We demonstrated that serum albumin and total lymphocyte counts, which are easily accessible blood parameters routinely examined before treatment, may predict the response in geriatric gastric cancer patients receiving neoadjuvant FLOT treatment. However, larger prospective, multicenter studies are required to confirm this relationship.
Factors Affecting Survival in Esophageal Squamous Cell Carcinoma: Single-Center Experience
(Kare Publ, 2020) Sakin, Abdullah; Urun, Yonca Yilmaz; Sahin, Suleyman; Atici, Muhammed Mustafa; Arici, Serdar; Geredeli, Caglayan; Cihan, Sener
OBJECTIVE: Squamous cell esophageal cancer (ESCC) is a highly fatal malignancy. This study aims to investigate the factors affecting survival in patients with metastatic and non-metastatic ESCC. METHODS: Between 2008 and 2016, 107 patients with ESCC who were followed up in an oncology clinic were included in the analysis. Patients were grouped based on the stage of disease as clinical-stage II to IV. RESULTS: Of the 107 patients, 55 (55.1%) of them were male and 52 (48.6%) of them were female. The mean age was 60.8 years. Based on the clinical-stage, 28 (26.2%) patients had stage II disease, 33 (30.8%) had stage III disease, and 46 (43.0%) had stage IV disease. Twenty-nine (27.1%) patients with the non-metastatic disease underwent surgery following neoadjuvant chemoradiotherapy (CRT), while 29 (27.1%) patients received definitive CRT. Twenty-six (56.5%) patients with metastatic disease received chemotherapy (CT). While median overall survival (mOS) could not be reached in patients who underwent surgery following neoadjuvant CRT, mOS for patients receiving definitive CRT versus patients treated with surgery alone-was 22.0 months and 24.0 months, respectively (p=0.008). In the metastatic stage, mOS was 8.0 months for the patients treated with a first-line CT and 3.0 months for patients receiving best supportive care (p<0.001). In multivariate analysis, factors predicting survival in patients with the non-metastatic disease were ECOG PS 3-4 (Hazard ratio [HR], 6.13), undergoing surgery (HR, 0.22), clinical-stage III disease (HR, 3.19), and presence of recurrence (HR, 24.12). For patients with metastatic disease, ECOG PS 3-4 (HR, 3.31), grade-III histology (HR, 3.39), liver metastasis (HR, 2.53), and receiving CT (HR, 0.15) were the factors associated with survival in multivariate analysis. CONCLUSION: In our study, surgery and early clinical-stage increased survival, whereas experiencing recurrence adversely affected survival in non-metastatic ESCC. In the metastatic stage, ECOG PS 3-4, grade-3 histology and liver metastasis adversely affected survival, while receiving CT significantly improved survival.
Inflammatory Biomarkers From Blood Counts as Prognostic Tools in Metastatic Esophageal Cancer
(int Scientific information, inc, 2025) Urun, Yonca Yilmaz; Beypinar, Ismail
Background: Globally, esophageal cancer ranks as the sixth leading cause of cancer-related mortality. This retrospective study from a single center in Turkey aimed to evaluate hematological inflammatory biomarkers in complete blood count (CBC) data and outcomes in 113 patients with advanced esophageal carcinomas. Material/Methods: We conducted a retrospective analysis of 113 patients with metastatic esophageal cancer composed of squamous (92), adenocarcinoma (18), and small cell (3) histology. We investigated neutrophil-to-lymphocyte ratio tory response index (SIRI), and aggregate index of systemic inflammation (AISI) in terms of prognosis. Results: The initial treatment for 25.7% of patients consisted of a carboplatin-paclitaxel combination. In response to the initial round of chemotherapy, 52.2% of patients showed improvement (15% complete, 37.2% partial), while 18.6% experienced disease progression. Neutropenia was observed as the most prevalent severe (grades 3-4) adverse reaction, affecting 19.8% of patients. Higher NLR, PLR, SII, NLPR, SIRI, and AISI values were associated with worse survival (P=0.016, P=0.008, P=0.011, P=0.028, P=0.014, P=0.001, respectively), whereas higher LMR was correlated with better survival (P=0.001). The NMR analysis showed no significant association (P=0.46). Multivariate analysis identified independent prognostic factors except histology, PLR, and NLPR. Conclusions: Research indicates that inflammatory indicators obtained from complete blood count analyses possess prognostic significance for individuals with metastatic esophageal cancer. These biomarkers demonstrate diverse capacities in forecasting the course of the disease. These simple and inexpensive markers need further confirmation to guide individualized treatment planning.
Response: Do Nutritional and Inflammatory Indices Predict Response in Geriatric Gastric Cancer Patients Treated With Neoadjuvant Flot Regimen
(Sage Publications inc, 2025) Urun, Yonca Yilmaz; Urun, Muslih
Vitamin D Deficiency and Supplementation in Irritable Bowel Syndrome: Retrospective Evaluation of Subtype and Sex-Based Differences
(MDPI, 2025) Oflas, Nur Duezen; Urun, Yonca Yilmaz
Background and Objectives: Irritable bowel syndrome (IBS) is a prevalent functional gastrointestinal disorder with diverse subtypes. Recent evidence has suggested a link between vitamin D deficiency and IBS; however, the associations between vitamin D levels, IBS subtypes, and hematological-biochemical parameters remain unclear. The aim of this research was to investigate the associations between vitamin D status, IBS subtypes, and sex, along with their relationships with biochemical and hematological parameters. Materials and Methods: This retrospective study included 240 patients diagnosed with IBS according to the Rome IV criteria at Van Y & uuml;z & uuml;nc & uuml; Y & imath;l University Medical Faculty Hospital. The patients were classified as diarrhea-predominant (IBS-D), constipation-predominant (IBS-C), or mixed-type (IBS-M). The patients' serum vitamin D levels and hematological (hemoglobin, white blood cell and platelet counts, and mean corpuscular volume) and biochemical (ferritin, iron, calcium, magnesium, and vitamin B12 levels) parameters were evaluated at baseline and after vitamin D supplementation. Sex-related differences were assessed. Results: Baseline vitamin D levels were low in all IBS subtypes, with no significant differences between the groups. Vitamin D supplementation resulted in a significant increase in serum vitamin D levels across all subtypes (p = 0.001). No significant correlations were identified between vitamin D levels and hematological or biochemical parameters. Sex differences in vitamin D levels were only significant in the IBS-M group, both at baseline and post-treatment (p < 0.05). Conclusions: Vitamin D deficiency is prevalent among all IBS subtypes and significantly improves with supplementation, independently of the subtype. Although no associations were found between vitamin D levels and laboratory parameters, the observed sex differences in patients with IBS-M highlight the need for further research into potential sex-related pathophysiological mechanisms. These findings support the integration of routine vitamin D assessment and supplementation into the clinical management of IBS, especially in patients with the IBS-M subtype and female sex, to potentially improve patient outcomes.