Comparison of Capizzi and High-dose Methotrexate Approaches in the Treatment of Pediatric B-cell Acute Lymphoblastic Leukemia.

Childhood cancers, with leukemia at the forefront, comprise 97% acute leukemia and 3% chronic leukemia, with 75% of acute leukemias being of lymphoblastic origin. Over the past 50 years, survival rates have witnessed a remarkable increase, progressing from around 10% to achieving cure rates exceeding 90% in certain childhood ALL subgroups with the advent of combined therapies. Between 1999 and 2018, a total of 123 patients diagnosed with B-ALL were initially identified, but after applying exclusion criteria, 105 patients were included in the evaluation, who were treated with COG protocols at our center.

Trastuzumab Rechallenge in HER2-Positive Metastatic Breast Cancer: A Promising Strategy for Enhanced Progression-Free Survival Post Ado-Trastuzumab Emtansine Progression.

: Metastatic breast cancer (MBC), particularly the HER2-positive subtype, represents a significant clinical challenge, with approximately 20-25% of breast cancer cases demonstrating HER2 overexpression. Trastuzumab, a monoclonal antibody targeting HER2, has significantly improved outcomes in these patients. However, progression after second-line treatments such as trastuzumab emtansine (T-DM1) necessitates exploring subsequent therapeutic options.

Repeated Radiosynovectomy in Haemophilia: Revealing Long-Term Effectiveness and Safety.

Introduction: Radiosynovectomy (RS), which uses beta particle-emitting radiocolloids, has proven highly effective in significantly reducing the occurrence of haemarthroses and breaking the cycle of bleeding and synovitis. This study now presents the long-term outcomes of repeated RS in individuals with haemophilia.

Materials And Methods: Repeated RS was administered to 48 joints in 37 people with haemophilia (PwHs) diagnosed with chronic haemophilic synovitis.

Retrospective analysis of hemophilia B in Turkey: identifying main characteristics and treatment options.

Background: Hemophilia B (HB), an X-linked recessive inherited bleeding disorder, exhibits a high prevalence among males.

Objectives: To present the first national cohort of persons with HB to define the demographics, clinical characteristics, and treatment patterns in Turkey.

Methods: This multicenter, retrospective study included 433 alive persons with HB registered in 35 centers between 1961 and 2018.

Concizumab prophylaxis in persons with hemophilia A or B with inhibitors: patient-reported outcome results from the phase 3 explorer7 study.

Background: Patient-reported outcomes (PROs) reflect patient perceptions of disease and treatment and are important for evaluating new therapies.

Objectives: Evaluate the effects of once-daily concizumab prophylaxis on health-related quality of life (HRQoL), treatment burden, and treatment preference in males aged ≥12 years with hemophilia A/B with inhibitors.

Methods: Patients enrolled in the multicenter, open-label explorer7 phase 3 study (ClinicalTrials.

Preclinical photon minibeam radiotherapy using a custom collimator: Dosimetry characterization and preliminary in-vivo results on a glioma model.

Purpose: The purpose of this study is to investigate the dosimetric characteristics of a collimator for minibeam radiotherapy (MBRT) with film dosimetry and Monte Carlo (MC) simulations. The outcome of MBRT with respect to conventional RT using a glioma preclinical model was also evaluated.

Methods: A multi-slit collimator was designed to be used with commercial small animal irradiator.

Combining Endocrine Therapy with Trastuzumab Emtansine Improves Progression-Free Survival and Overall Survival in HER2-Positive, Hormone Receptor-Positive Metastatic Breast Cancer.

Patients with human epidermal growth factor receptor 2 (HER2) -positive, hormone receptor-positive (HR-positive) metastatic breast cancer (MBC) usually undergo trastuzumab emtansine (T-DM1) therapy in subsequent lines. Combining endocrine therapy (ET) with T-DM1 can improve treatment outcomes in this subtype. Therefore, this study aimed to investigate the benefits of using T-DM1 with ET in HER2-positive and HR-positive MBC.

Current practices of craniospinal irradiation techniques in Turkey: a comprehensive dosimetric analysis.

Objective: This study evaluates various craniospinal irradiation (CSI) techniques used in Turkish centers to understand their advantages, disadvantages and overall effectiveness, with a focus on enhancing dose distribution.

Methods: Anonymized CT scans of adult and pediatric patients, alongside target volumes and organ-at-risk (OAR) structures, were shared with 25 local radiotherapy centers. They were tasked to develop optimal treatment plans delivering 36 Gy in 20 fractions with 95% PTV coverage, while minimizing OAR exposure.

Fitusiran prophylaxis in people with hemophilia A or B who switched from prior BPA/CFC prophylaxis: the ATLAS-PPX trial.

Fitusiran, a subcutaneous investigational small interfering RNA therapeutic, targets antithrombin to rebalance hemostasis in people with hemophilia A or B (PwHA/B), irrespective of inhibitor status. This phase 3, open-label study evaluated the efficacy and safety of fitusiran prophylaxis in males aged ≥12 years with hemophilia A or B, with or without inhibitors, who received prior bypassing agent (BPA)/clotting factor concentrate (CFC) prophylaxis. Participants continued their prior BPA/CFC prophylaxis for 6 months before switching to once-monthly 80 mg fitusiran prophylaxis for 7 months (onset and efficacy periods).

A study on the relationship between malignancy and diabetes.

Background & Aims: Today, malignancy and diabetes mellitus are important health problems with an increasing prevalence that have high morbidity and mortality. The purpose of this study was to examine the presence of overt diabetes mellitus (DM) in individuals with malignancy diagnosis, evaluate the effect of pre-diagnosis glucose control on the patients, DM duration and treatment options for malignancy development and type, and investigate the risk of DM development on non-diabetic patients with malignancy after cancer treatment.

Methods: A total of 469 patients between the ages of 26 and 70 with different malignancies were divided into 3 groups.

Phase 3 Trial of Concizumab in Hemophilia with Inhibitors.

Background: Concizumab is an anti-tissue factor pathway inhibitor monoclonal antibody designed to achieve hemostasis in all hemophilia types, with subcutaneous administration. A previous trial of concizumab (explorer4) established proof of concept in patients with hemophilia A or B with inhibitors.

Methods: We conducted the explorer7 trial to assess the safety and efficacy of concizumab in patients with hemophilia A or B with inhibitors.

Neoadjuvant intermediate-course versus long-course chemoradiotherapy in T3-4/N0+ rectal cancer: Istanbul R-02 phase II randomized study.

Radiation therapy (RT) is typically applied using one of two standard approaches for preoperative treatment of resectable locally advanced rectal cancer (LARC): short-course RT (SC-RT) alone or long-course RT (LC-RT) with concurrent fluorouracil (5-FU) chemotherapy. The Phase II single-arm KROG 11-02 study using intermediate-course (IC) (33 Gy (Gray)/10 fr (fraction) with concurrent capecitabine) preoperative chemoradiotherapy (CRT) demonstrated a pathologically complete response rate and a sphincter-sparing rate that were close to those of LC-CRT. The current trial aim to compare the pathological/oncological outcomes, toxicity, and quality of life results of LC-CRT and IC-CRT in cases of LARC.

The Effects of Exercise Training on Physical Activity Level, Daily Living Activities, and Participation in Children with Hemophilia.

Objective: Hemophilia is an uncommon disorder that is difficult to diagnose and manage. Effective movement and individual physiotherapy interventions can improve physical activity levels, quality of life, and participation in children with hemophilia. This study aimed to investigate the effects of individually planned exercise on joint health, functional level, pain, participation, and quality of life in children with hemophilia.

Tandem high-dose chemotherapy followed by autologous stem cell transplantation: An infant with trilateral retinoblastoma.

Background: Retinoblastoma (RB) is the most common intraocular malignancy in childhood. Advanced RB, associated with exceedingly poor prognosis, requires more intensive multiagent chemotherapy than conventional regimens. Rescue of the bone marrow after intensive chemotherapy is achieved with stem cell transplantation.

Clinical course and features of soft tissue sarcomas in geriatric patients: a single-center experience.

Objective: This study was performed to examine the disease course in geriatric patients with soft tissue sarcoma and determine the risk factors for mortality.

Methods: We retrospectively analyzed patients who were treated at Istanbul University Oncology Institute from January 2000 to August 2021.

Results: Eighty patients were included in the study.

Androgen Receptor Blockade Using Enzalutamide Suppresses Long Non-Coding RNA ARLNC1 in Prostate Cancer Cells.

Prostate cancer (PCa) is a common malignant disease with high mortality rates that develops and progresses in an androgen-dependent way. In recent years, RNA sequencing enabled identification of many PCa-related long noncoding RNAs including androgen receptor-regulated long non-coding RNA 1 () and prostate cancer-associated transcript 1 (). In the present study, our goal was to illuminate expression changes of and in the context of androgen stimulation or androgen receptor (AR) blockade with respect to AR expression status.

Central Nervous System Fungal Infections in Children With Leukemia and Undergoing Hematopoietic Stem Cell Transplantation: A Retrospective Multicenter Study.

Background: Central nervous system fungal infections (CNSFI) are seen in patients with hematologic malignancies and have high morbidity and mortality. Because of their rarity, there is limited data on CNSFI in children with no established treatment protocols or guidelines.

Materials And Methods: In this multicenter retrospective study, 51 pediatric patients with leukemia, 6 of whom had undergone bone marrow transplantation, with proven or probable CNSFI were evaluated.

Identification of candidate genes in a family with cancer overload by whole-exome sequencing.

Background: Approximately 120 out of every 1 million children in the world develop cancer each year. In Turkey, 2500-3000 children are diagnosed with new cancer each year. The causes of childhood cancer have been studied for many years.

Access to Radiation Therapy by Syrian Refugees Displaced to Turkey.

For over 10 years, the Syrian conflict has caused millions of people to leave their homeland, causing one of the biggest refugee crises in modern history. Considering its prevalence, cancer is an important care burden among Syrian refugees. Radiation therapy is one of the essential parts of cancer treatment, and radiation oncology departments must guarantee optimal cancer treatments even in such a challenging setting when patients are displaced forcefully from their homes.

Evaluating Pain Management Practices for Cancer Patients among Health Professionals: A Global Survey.

Cancer incidence in the world is predicted to increase in the next decade. While progress has been in diagnosis and treatment, much still remains to be done to improve cancer pain therapy, mainly in underserved communities in low-income countries. To determine knowledge, beliefs, and barriers regarding pain management in both high- and low-income countries (according to the WHO classification); and to learn about ways to improve the current state of affairs.

Bladder granulocytic sarcoma in a child: case report and literature review.

Background: Granulocytic sarcoma (GS) is an extramedullary solid tumor composed of immature myeloid cells. GS has been associated with acute myeloid leukemia (AML), myelodysplastic syndromes or myeloproliferative diseases. Although GS can affect various tissues of the human body, it has rarely been reported in other soft tissues such as the breast, gastrointestinal, respiratory and genitourinary tracts.