Publications by authors named "Olmez O"

: A high baseline neutrophil-to-lymphocyte ratio (NLR) is a poor prognostic factor in various cancers. However, its predictive role in metastatic bladder cancer (mBC) treated with immunotherapy is unclear. In this study, we aimed to investigate the relationship between the baseline and change in NLR and overall survival in mBC patients treated with immunotherapy, with the potential to significantly impact patient care.

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  • The study examined the impact of immunotherapy in renal patients with urothelial carcinoma, categorizing them based on their glomerular filtration rate (GFR).
  • Results showed that patients with normal GFR had a higher overall response rate and longer duration of response compared to those with low and very low GFRs.
  • The findings indicated that while normal GFR patients had better outcomes, immunotherapy still proved effective for patients with impaired renal function who lacked other treatment options.
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Following the results of the phase 3 KEYNOTE-522 trial, the U.S. Food and Drug Administration approved pembrolizumab, a humanized IgG4 kappa monoclonal antibody, in combination with neoadjuvant chemotherapy as a new standard of care for high-risk early-stage triple-negative breast cancer (TNBC).

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Total neoadjuvant therapy (TNT) has emerged as a promising approach for managing locally advanced rectal cancer (LARC), aiming to enhance resectability, increase pathological complete response (pCR), improve treatment compliance, survival, and sphincter preservation. This study compares the clinical outcomes of TNT, with either induction or consolidation chemotherapy, to those of the standard chemoradiotherapy (CRT). In this retrospective multi-institutional study, patients with stage II-III LARC who underwent CRT or TNT from seven oncology centers between 2021 and 2024 were retrospectively analyzed.

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  • * Among 106 patients, 83 had CN, and those who had the surgery could continue their nivolumab treatment for longer (14.5 months) compared to those who didn't have the surgery (6.7 months).
  • * Overall survival was better for patients with CN (22.9 months) compared to those without it (8.1 months), but the surgery and certain medical scores were important factors for how long they lived.
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  • This study assessed whether the RECIST criteria for objective response rates (ORR) could predict long-term overall survival (OS) in metastatic urothelial carcinoma patients undergoing immune checkpoint inhibitor (ICI) therapy.
  • The analysis revealed that 47% of patients had disease progression within the first 3 months, with complete response (CR) seen in 10%, partial response (PR) in 23%, and stable disease (SD) in 20% of cases.
  • Key findings showed that 5-year OS rates significantly favored CR (73%) over PR (23%), and certain factors like liver metastases and response type were critical indicators of OS, highlighting the relevance of ORR as a potential surrogate endpoint.
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Based on the CheckMate 649 trial, nivolumab plus chemotherapy is the recommended first-line treatment for HER2-negative unresectable advanced or metastatic gastric, gastroesophageal junction (GEJ), or esophageal adenocarcinoma. This nationwide, multicenter, retrospective study evaluated the real-world effectiveness of this regimen in Turkish patients and identified subgroups that may experience superior outcomes. Conducted across 16 oncology centers in Turkey, this study retrospectively reviewed the clinical charts of adult patients diagnosed with HER2-negative unresectable advanced or metastatic gastric, GEJ, or esophageal adenocarcinoma from 2016 to 2023.

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We evaluated the incidence, clinicopathological features, prognostic factors, progression-free survival (PFS) and overall survival (OS) of patients with gastric cancer and bone metastases. The medical records of 110 patients with bone metastases were retrospectively analyzed. In our study, the incidence of bone metastases was 3.

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To evaluate radiological and clinical features in metastatic anaplastic lymphoma kinase+ non-small cell lung cancer patients and crizotinib efficacy in different lines. This national, non-interventional, multicenter, retrospective archive screening study evaluated demographic, clinical, and radiological imaging features, and treatment approaches in patients treated between 2013-2017. Totally 367 patients (54.

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Loss of human epidermal growth factor receptor 2 (HER2) expression can be seen in almost 25-30 % patients after HER2 receptor directed neoadjuvant treatment. These patients have unclear clinical outcomes in previous studies. We aimed to investigate the importance of HER2 loss, additionally with predictive factors for the loss of HER2.

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  • Triple negative breast cancer (TNBC) often recurs after treatment, particularly in those with residual disease post-chemotherapy, and capecitabine is commonly used as a follow-up treatment for these patients.! -
  • A study analyzed 170 TNBC patients who received capecitabine after neoadjuvant chemotherapy, finding a 30% recurrence rate and 18% death rate, with a 3-year disease-free survival (DFS) of 66% and overall survival (OS) of 74% in the cohort.! -
  • Results indicated that while capecitabine's effectiveness was lower than past studies, certain patients, especially those with specific residual disease characteristics, could still benefit from it,
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The current study was designed to assess the response to treatment, as well as clinical and survival outcomes, across different breast cancer subtypes in patients who underwent neoadjuvant chemotherapy (NAC). From 2014 to 2019, a total of 139 patients who were histologically confirmed to have breast cancer, underwent NAC, and subsequently received breast and axillary surgery, were retrospectively included in this study. The rates of pathological complete response (pCR) to NAC were significantly higher for HER2-positive and triple-negative subtypes than for luminal A and HER2-negative subtypes ( = 0.

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Objective: The objective of this multi-centre, real-world study was to examine the potential influence of comprehensive molecular profiling on the development of treatment decisions or adjustments for patients with advanced solid malignancies. We then evaluated the impact of these informed choices on patient treatment outcomes.

Methods: The study encompassed 234 adult patients (mean age: 52.

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Background: Oligometastatic disease for nonsmall cell lung cancer (NSCLC) patients is generally thought to represent a better prognosis with a quieter biology, limited number of disease sites and long-term disease control. In this study, we aimed to determine the efficacy of radical treatment options for patients with oligometastatic NSCLC.

Methods: This retrospective trial included totally 134 patients with oligometastatic NSCLC.

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Background: Prostate cancer is a prevalent cancer in men worldwide, and castration-resistant prostate cancer (CRPC) is characterized by disease progression despite androgen deprivation therapy. While clinical and prognostic biomarkers have been identified in CRPC, the significance of serum inflammatory markers remains unclear.

Materials And Methods: This retrospective study included 79 CRPC patients treated with abiraterone or enzalutamide.

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  • The study looked at how certain immune cells in breast cancer patients change before and after chemotherapy and how these changes relate to their survival.
  • Researchers found that the levels of these immune cells decreased after treatment, but higher levels before treatment were linked to better outcomes.
  • The results suggest that measuring these immune cells can help doctors predict which patients might have better chances of surviving after treatment.
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  • ALK mutations occur in about 3-5% of non-small cell lung cancer (NSCLC) patients, with pleural involvement or effusion (Ple-I/E) commonly seen in those with ALK positivity.
  • This multicenter study analyzed 362 ALK-positive NSCLC patients, finding that 15.7% had Ple-I/E at diagnosis, with no significant link to gender or other metastases characteristics.
  • Patients with Ple-I/E exhibited significantly better median progression-free survival (18.7 months) and overall survival (44.6 months) compared to those without Ple-I/E, pointing to a potentially more favorable prognosis.
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Objective: Colorectal cancer is common worldwide, and adjuvant treatment's benefit is still controversial. We designed this study to determine the role of MSI and CDX-2 status determined by immunohistochemistry (IHC) combined with the inflammatory markers and pathological parameters in predicting disease recurrence in stage II and III colon cancer.

Methods: A total of 226 stage II/III colon cancer patients with a median age of 59 years who underwent initial surgery were included in this retrospective study.

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Objective: To evaluate the clinicopathological characteristics of mismatch repair (MMR) deficiency and its clinical outcomes by performing immunohistochemistry (IHC) for MMR genes in the serous ovarian cancer (SOC) tumour sections.

Study Design: A retrospective case-control study. Place and Duration of the Study: Gynecology Department of Kanuni Sultan Süleyman Training and Research Hospital, and Department of Medical Oncology of Medipol University, between March 2001 and January 2020.

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Regorafenib, an oral multikinase inhibitor, has improved survival in metastatic colorectal cancer (mCRC) patients who have progressed on standard therapies. Our study aimed to evaluate prognostic factors influencing regorafenib treatment and assess the optimal dosing regimen in a real-life setting. We retrospectively analysed 263 patients with mCRC from multiple medical oncology clinics in Turkey.

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Background: Most of the studies on salivary gland cancers are limited for various reasons such as being single-center, small number of patients, including only major or minor SGCs, or only including epidemiological data.

Methods: A total of 37 medical oncology clinics from different regions of Turkey participated in this retrospective-multicenter study. The analyzed data included clinical and demographical features, primary treatment, metastasis localizations, and treatments and includes certain pathologic features.

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  • - 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
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Atezolizumab is now the standard treatment for extensive-stage small cell lung cancer (ES-SCLC). Herein, we investigated the prognostic role of inflammatory markers in patients treated with atezolizumab plus chemotherapy and evaluated the efficacy and safety of adding atezolizumab to chemotherapy for patients with ES-SCLC and prognostic and predictive factors as a real-life experience. This retrospective study included 55 patients who received front-line atezolizumab with etoposide plus platin regimen for ES-SCLC.

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Background: In vitro studies have shown that the functional - 1478CA > del polymorphism (rs33989964) of the suppressor of cytokine signaling (SOCS)-1 gene is associated with an altered trascriptional activity. Here, we sought to examine the potential association of this polymorphism with the risk of gastric cancer (GC) and to analyze its prognostic impact on overall survival (OS).

Materials And Methods: The study cohort consisted of 74 Turkish patients with GC and 52 healthy controls.

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Purpose: Patients with locally advanced breast cancer (LABC) should be treated with neoadjuvant chemotherapy (NAC). Pathological complete response (pCR) is related to better disease-free survival (DFS). The best strategy for assessing the efficacy of NAC has not been established yet, but several studies have shown that 18F-FDG PET/CT is a potential imaging tool for assessing pCR.

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