View clinical trials related to Breast Neoplasms.
Filter by:This is an epidemiological cross-sectional study aiming to determine the prevalence of lymphedema and the incidence of risk factors in patients diagnosed with unilateral breast cancer in a cohort from 2008 to 2020 in a specialised oncology centre in Valle del Cauca, Colombia.
Neoadjuvant or primary systemic treatment is increasingly applied in the treatment of operable breast cancer. Down staging of the primary tumor is one of the important goals of neoadjuvant chemotherapy treatment (NCT), thereby permitting breast-conserving treatment without affecting the risk for a local relapse. Complete pathological response (pCR) rates after NCT vary across histological subtypes and can be more than 60% in HER2-positive disease with dual blockade therapy. Down staging of the axilla is also observed in patients initially presenting with metastatic lymph nodes. pCR rates in the axilla vary between 22% and 42% in reported series, again depending on tumor subtype. Omission of axillary lymph node dissection (ALND) can avoid the post-operative morbidity such as lymphedema in the short or long term follow-up. Metastatic lymph node status is hard to be stated as a pCR in the axilla by using physical examination or imaging such as ultrasonography or tomography after complete NCT. Good response to the axilla lymph node causing the difficulty of tissue proof by using core needle biopsy, though the investigator knew that biopsy stands for the definite tool for the confirmation of the residual disease. One proposed method to decrease the false-negative rate (FNR) is clip placement in the positive node at initial diagnosis with confirmation of clipped node resection at surgery. The correlation between the axillary lymph node identified on initial axillary ultrasound and the sentinel lymph nodes (SLNs) identified at surgery has not been fully evaluated. The concordance between percutaneous biopsy and the lymph node resected at the time of SLNB is not 100%. Sometimes, the initial node identified by ultrasound is not one of the SLNs. The impairment of the performance of SLNB might correlated to the alteration of lymphatic flow induced by tissue fibrosis or tumor deposits after NCT. The investigator hypothesized that the clip placement at diagnosis of node-positive disease with removal of the clipped node during SLNB reduces the FNR of SLNB after NCT. Here, we evaluate how often the lymph node containing the clip placed at percutaneous biopsy before chemotherapy was found at surgery to be one of the SLNs, and how often it was found in the nodes retrieved at ALND. In addition, the investigator report the impact of identification of the clipped node within the SLNs on the FNR of SLNB.
This is an observational retrospective study which aims at comparing the 5-year survival estimates from "PREDICT V2.2" with observed 5-year outcome from our dataset of Indian women treated for operable breast cancer. "PREDICT V2.2" is a prognostication and treatment benefit tool developed in the UK. It is a tool available online (www.predict.nhs.uk) providing 5-and 10-year survival estimates and treatment benefit predictions, for operable breast cancer patients. We hypothesize that 5-year overall survival (OS) predictions using "PREDICT V2.2" will have reasonable accuracy and applicability to the Indian operable breast cancer patients. The predictions, if accurate, will not only reassure the patients of the benefits of the treatment being offered, which outweigh the side effects but it will also make clinician as well as patient confident about avoiding potentially toxic systemic therapies, where the benefit is too small.
This study aims to collect tear samples from 50 women who have been recently diagnosed with breast cancer.
The investigators hypothesize that the TCF20 rs932376 locus controls endoxifen levels in estrogen receptor (ER)-positive breast cancer patients on tamoxifen therapy and that the requirement of tamoxifen dose to achieve therapeutic levels of endoxifen varies according to the genotype status of the patient's at the TCF20 rs932376 locus. Patients will receive escalating doses of tamoxifen according to their TCF20 rs932376 genotype status. Patients on 20mg tamoxifen daily for 8 weeks or longer will provide blood samples for analysis of tamoxifen and its metabolites. Patients assess with >30nM endoxifen concentrations will continue with 20mg tamoxifen dose. Patients who have endoxifen concentrations <30nM will receive dose increments of 10mg every 8 weeks until they achieve endoxifen threshold of >30nM or reach maximum dose level of 40mg/day.
The goals of this clinical study are to learn about the safety, tolerability, dosing and effectiveness of magrolimab in combination with nab-paclitaxel or paclitaxel (cohort 1) or with sacituzumab govitecan-hziy (cohort 2) in patients with non-surgically removable locally advanced or metastatic triple-negative breast cancer.
The study aims to examinethe pattern and frequency of pathogenic variants among all newly diagnosed breast cancer patients in a genetically distinct population. Additionally, the uptake rate of "cascade family screening" , frequency of pathogenic variants and barriers against testing will be studied.
Cancer and its treatments can be factors that alter the quality of life of patients. The induced alteration of the quality of life can influence compliance and impact survival. Considering the after-effects of the treatment, carrying out such a survey will provide for the first time precise information on the main determinants of the quality of life as well as on the care pathway of patients with invasive breast cancer in the Martinique region.
This study will assess the efficacy and safety of Niraparib in participants with either tumor mutation in the BRCA gene (tBRCAmut) HER2- breast cancer (Independent of hormone receptor [HR] status, including HR positive [+] and TNBC) or tumor BRCA wild type (tBRCAwt) TNBC with molecular disease based on the presence of circulating tumor Deoxyribonucleic acid (ctDNA) following surgery or completion of adjuvant therapy.
Simultaneous integrated boost radiotherapy has been investigated in some malignant tumors and appears to be safe and feasible. However, Hypofractionation with simultaneous integrated boost has been investigating in breast cancer. Investigators initiated this phase II prospective trial to analyse acute toxicity of hypofractionation with simultaneous integrated boost in patients with early breast cancer.