View clinical trials related to Breast Neoplasms.
Filter by:In some cases of hormone receptor positive, human epidermal growth factor receptor 2 (HER2) negative early breast cancer the benefit of adding adjuvant chemotherapy to hormonal treatment, estimated on the basis of the classical clinico-pathological parameters, is unclear. In these cases the application of a genomic test could be useful in guiding the therapeutic choice.
To investigate the treatment pattern and efficacy of patients with negative primary ER lesion but positive ER expression in MBC using a novel convenient way of 18F-fluoroestradiol positron emission tomography/computed tomography (18F-FES PET/CT).
CDK4/6 inhibitors have led to an improvement of both progression free survival (PFS) and overall survival (OS) in patients with advanced estrogen positive (ER+)/HER2- breast cancer when applied in the first or second line of treatment. Despite the advantages of CDK4/6 inhibitors, these medications can lead to adverse effects. One of the adverse events observed across all types of CDK4/6 inhibitors is an elevation in creatinine levels. An elevation in plasma creatinine during treatment with abemaciclib is not always indicative of a reduction in renal function; it can also be attributed to the inhibition of active tubular secretion of creatinine. This phenomenon is known as pseudo acute kidney injury (pseudo-AKI). The incidence of pseudo-AKI in patients using CDK4/6 inhibitors is currently unknown. A method to distinguish pseudo-AKI from AKI is measuring the level of an alternative filtration marker in blood, for example cystatin C. Cystatin C is also filtered at the glomerulus but not secreted intro the renal tubulus or reabsorbed into the bloodstream. Also, there is no affection by muscle mass or diet. In this study the investigators will explore the incidence of both AKI and pseudo-AKI in patients who are treated with CDK4/6 inhibitor treatment by assessing both creatinine and cystatin C in plasma.
This is a non randomized, single arm study, where each patient will undergo imaging with Computed Tomography (CT) and Whole-body magnetic resonance imaging (WB-MRI) at different timepoint. The primary endpoint is time to progression as documented by CT or WB-MRI.
Being a mechanistic study, this work aims to figure out "the role of the cytoplasmic mRNA deadenylase CNOT7 expressed protein on NK cell resistance in metastatic BC". In other words, to explore, whether, "CNOT7 contributes to metastasis in Egyptian female metastatic BC patient's cohort, through NK cell resistance, or not."
Perioperative SARS-CoV-2 infection significantly increases the risk of postoperative complications and mortality, while also exerting long-lasting impacts on multiple organs and systems. Due to the curtailment or cessation of non-emergency surgeries during the initial phase of the pandemic, there is a lack of evidence regarding the optimal timing and medium- to long-term postoperative outcomes of surgical intervention in breast cancer patients with prior SARS-CoV-2 infection, particularly after vaccination. We aim to investigate whether prior SARS-CoV-2 infection increases the risk of postoperative adverse outcomes in breast cancer patients and determine the optimal timing for surgical intervention during the pandemic, as well as to longitudinally assess the evolution of postoperative adverse outcomes within one year after COVID-19 and identify associated risk factors.
The study's objective is to compare the diagnostic accuracy of the contrast-enhanced mammography (CEM) , considering as reference the classification obtained with Vacuum Assisted Breast Biopsy (VABB).
This is a non-interventional observational study conducted in Germany to evaluate the real-world effectiveness, tolerability, safety, and quality of life in patients with locally advanced/metastatic HR+/HER2- breast cancer treated with one of the following 1st line treatments: Ribociclib + AI/FUL, or endocrine monotherapy, or chemotherapy
The purpose of this study is to describe the effect of the medicine palbociclib when given together with an aromatase inhibitor for treatment of breast cancer. The study will consider participants who: - have advanced or metastatic breast cancer that is spread to other parts of the body. - have HR+/HER2- (hormone receptor positive* / human epidermal growth factor receptor 2 negative**) breast cancer types. - Hormone receptor positive (HR+): are cells that have a group of proteins that bind to a specific hormone. For example, some breast cancer cells have receptors for the hormones estrogen or progesterone. These cells are hormone receptor positive, and they need estrogen or progesterone to grow. This can affect how the cancer is treated. Knowing if the cancer is hormone receptor positive may help plan treatment. - Human epidermal growth factor receptor 2 negative (HER2-): cells that have a small amount or none of a protein called HER2 on their surface. In normal cells, HER2 helps control cell growth. Cancer cells that are HER2 negative may grow more slowly and are less likely to recur (come back) or spread to other parts of the body than cancer cells that have a large amount of HER2 on their surface. Checking to see if a cancer is HER2 negative may help plan treatment. - have started treatment in the period between January 2017 and December 2021. The study will describe the treatment effect for different patient groups in terms of age and comorbidities. Comorbidity is the condition of having two or more diseases at the same time. The data is collected by the Danish Breast Cancer Group in the period between 2017 to 2023.
The goal of this clinical trial is to evaluate the effectiveness of mastectomy flap fixation in breast cancer patients. The main questions it aims to answer are: - To compare seroma formation after mastectomy flap fixation with conventional surgery in breast cancer patients Participants will be randomly divided into 2 groups, 1. Mastectomy flap fixation 2. Conventional surgery with non flap fixation. Researchers will record the amount and color of drainage fluid, patient and tumor characteristics, and operative related factor after surgery. Researchers will compare with conventional surgery to see if seroma formation, and wound infection.