Publications by authors named "İbrahim Karadag"

Article Synopsis
  • The study evaluated the effectiveness and safety of using granulocyte-colony stimulating factor (G-CSF) as a preventive treatment during chemoimmunotherapy for extensive-stage small cell lung cancer (ES-SCLC).
  • A total of 119 patients were analyzed, comparing those who received G-CSF to those who did not, with results indicating better response and disease control rates in the G-CSF group, although the differences were not statistically significant.
  • Overall, using G-CSF alongside the treatment protocol did not significantly improve efficacy or increase side effects, suggesting it can be safely integrated into treatment for ES-SCLC patients.
View Article and Find Full Text PDF

Central nervous system (CNS) metastases can be seen at a rate of 30% in advanced stages for patients with non-small cell lung cancer (NSCLC). Growing evidence indicates the predictive roles of driver gene mutations in the development of brain metastases (BM) in recent years, meaning that oncogene-driven NSCLC have a high incidence of BM at diagnosis. Today, 3rd generation targeted drugs with high intracranial efficacy, which can cross the blood-brain barrier, have made a positive contribution to survival for these patients with an increased propensity to BM.

View Article and Find Full Text PDF

In this study, we aimed to examine the relationship among cancer gland rupture microenvironment, programmed cell death ligand 1 (PD-L1) expression in CD163 + tumor-associated macrophages (TAMs), and prognosis in colon adenocarcinoma. A total of 122 patients were diagnosed with colon adenocarcinoma between 2010 and 2019. PD-L1 + (clone 22C3) "macrophage scores" in the microenvironment of cancer gland rupture were calculated.

View Article and Find Full Text PDF
Article Synopsis
  • - The study aimed to analyze the effectiveness of adding pertuzumab (P) to trastuzumab (H) and neoadjuvant chemotherapy (NCT) in achieving pathological complete response (pCR) in HER2+ breast cancer patients.
  • - Involving 1,528 female patients, the results showed that those receiving NCT-HP had a significantly higher pCR rate (66.4%) compared to those on NCT-H (56.8%) and fewer relapses (4.5% vs. 12.2%).
  • - Key factors predicting pCR included invasive ductal carcinoma type, lower tumor grades, and the use of paclitaxel, reinforcing the benefits of adding pertuzumab in
View Article and Find Full Text PDF

Background: We aimed to investigate the prognostic significance of insulin resistance (IR) markers fasting triglyceride-glucose (TyG) index and triglyceride high-density lipoprotein cholesterol (TG/HDL-C) ratio in HER2-positive breast cancer (BC) patients with brain metastasis (BM).

Methods: In this single-center study, 120 patients who met the criteria were included. TyG and TG/HDL-C at the time of diagnosis were computed retrospectively.

View Article and Find Full Text PDF

Background: Non-carcinoid appendix epithelial tumors are rare. These tumors include low-grade and high-grade mucinous neoplasm also adenocarcinomas. We aimed to investigate the clinicopathological features, treatment, and risk factors of recurrence.

View Article and Find Full Text PDF

Background: There is no standard treatment recommended at category 1 level in international guidelines for subsequent therapy after cyclin-dependent kinase 4/6 inhibitor (CDK4/6) based therapy. We aimed to evaluate which subsequent treatment oncologists prefer in patients with disease progression under CDKi. In addition, we aimed to show the effectiveness of systemic treatments after CDKi and whether there is a survival difference between hormonal treatments (monotherapy vs.

View Article and Find Full Text PDF

Objective: To investigate the effect of hemogram parameters on predicting pathological complete response (pCR) in locally advanced rectal cancer.

Methodology: A total of 227 patients with rectal cancer treated with neoadjuvant concurrent chemoradiotherapy (CRT) were retrospectively analyzed. All patients were divided into two subgroups as high or low hemogram parameters according to the cut-off value obtained using the receiver operating characteristic (ROC) curve.

View Article and Find Full Text PDF

Objective: To investigate whether the use of diffusing capacity of the lungs for carbon monoxide (DLCO) and neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) could be used to predict bleomycin-induced pulmonary toxicity in patients with testicular cancer (TCa).

Study Design: Descriptive study.

Place And Duration Of Study: Ankara Oncology Training and Research Hospital, Turkey, between 2017 and 2020.

View Article and Find Full Text PDF

Objective: Although there are studies in which the ideal number of lymph nodes for early-stage ovarian cancer is specified, no study has been found on the number of lymph nodes that should ideally be removed by systematic lymph node dissection, including advanced-stage patients. The present study was aimed to retrospectively investigate the number of lymph nodes that need to be removed to detect lymph node positivity and the effect of this number on prognosis.

Methodology: A total of 155 patients over the age of 18 who were diagnosed with ovarian cancer without secondary malignancy and who underwent surgical lymph node dissection were included in the study between 2015 and 2020.

View Article and Find Full Text PDF

Purpose: Recently, neoadjuvant treatment approach has gained importance in locally advanced HER-2 positive breast cancer. Adding pertuzumab increases pathological complete response (pCR). In this study, we aimed to examine the clinicopathologic features that predict the pCR in patients receiving neoadjuvant pertuzumab, trastuzumab, and chemotherapy in locally advanced HER2 positive breast cancer.

View Article and Find Full Text PDF

To evaluate the immunogenicity and safety of the CoronaVac vaccine in patients with cancer receiving active systemic therapy. This multicenter, prospective, observational study was conducted with 47 patients receiving active systemic therapy for cancer. CoronaVac was administered as two doses (3 μg/day) on days 0 and 28.

View Article and Find Full Text PDF

The study aimed to evaluate the Coronavirus pandemic awareness of cancer patients ≥65 years of age, considered a vulnerable group, and their hospital arrival process, follow-ups and treatments during the pandemic. COVID-19 pandemic was found to increases the mortality and morbidity rates of individuals who aged 65 years and older. The research was conducted with a cross-sectional descriptive correlational design.

View Article and Find Full Text PDF

Objective: To compare the chemoradiotherapy for esophageal cancer followed by surgery study (CROSS) and continuous infusion 5-FU, leucovorin, oxaliplatin, and docetaxel (FLOT) protocols administered in distal esophageal and gastroesophageal junction (GEJ) tumors in terms of effectiveness and toxicity.

Study Design: Descriptive study.

Place And Duration Of Study: Ankara Oncology Training and Research Hospital, Turkey between 2015 and 2020.

View Article and Find Full Text PDF

Objective:  To determine the characteristics and prognosis of brain metastasised HER-2 positive breast cancer (BC) patients.

Study Design: Descriptive study.

Place And Duration Of Study: Ankara Oncology Training and Research Hospital, Turkey between 2000 and 2019.

View Article and Find Full Text PDF

Background/aim: In this study, our aim was to investigate the neutrophil/lymphocyte (N/L) ratio, variations in leukocytes and leukocyte subtypes, and the relationship between N/L ratio and insulin resistance (IR) in obesity.

Materials And Methods: Ninety-six patients and 40 healthy controls were included in this study. Patients’ blood glucose levels, insulin levels, and hemogram parameters upon 8 h of fasting were determined.

View Article and Find Full Text PDF

Aims: The aim of this study was to evaluate the association between neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and microalbuminuria in patients with normal estimated glomerular filtration rate (eGFR).

Methods: 174 patients who had eGFR ≥ 60 mL/min/1.73 m2 were studied.

View Article and Find Full Text PDF