Locally Advanced Breast Cancer (LABC)

This clinical trial aims to learn whether a brief psychological therapy called Brief Acceptance and Commitment Therapy (Brief-ACT) can improve the effectiveness of neoadjuvant chemotherapy in patients with locally advanced breast cancer. It will also examine how this therapy affects stress levels and certain blood markers related to inflammation and tumor growth. The main questions this study aims to answer are: Does Brief-ACT improve the rate of pathological complete response (pCR) after chemotherapy? Does Brief-ACT reduce levels of inflammatory and angiogenic biomarkers such as C-reactive protein (CRP), interleukin-6 (IL-6), neutrophil-to-lymphocyte ratio (NLR), and vascular endothelial growth factor (VEGF)? Does Brief-ACT reduce psychological stress in patients undergoing chemotherapy? Researchers will compare patients who receive Brief-ACT in addition to standard chemotherapy with those who receive standard chemotherapy alone to see if there are differences in treatment response, stress levels, and biomarker levels. Participants will: Receive neoadjuvant chemotherapy according to standard treatment protocols Be assigned to receive Brief-ACT sessions or no additional psychological intervention Attend regular clinic visits for treatment and monitoring Provide blood samples at specific time points for laboratory analysis Complete questionnaires to assess psychological stress

This prospective observational study aims to functionally characterize chemotherapy resistance in patients with locally advanced breast cancer undergoing neoadjuvant chemotherapy. Despite standard molecular classification, significant heterogeneity in treatment response exists, and the biological mechanisms underlying chemoresistance remain incompletely understood. In this study, patient-derived organoid (PDO) models will be established from tumor tissues obtained during routine clinical care. These three-dimensional models preserve the biological characteristics of individual tumors and enable ex vivo functional assessment of drug response. Chemotherapy sensitivity and resistance will be evaluated using quantitative parameters including Half-Maximal Inhibitory Concentration (IC50) values, cell viability, and apoptotic response. Functional data obtained from PDO models will be correlated with clinical and pathological treatment outcomes, particularly pathological complete response (pCR), to assess the predictive value of PDO-based assays. In addition, apoptotic biomarkers such as Caspase-3/7 will be measured in serum samples collected during routine clinical evaluation and analyzed in relation to treatment response. Furthermore, selected Food and Drug Administration (FDA) and European Medicines Agency (EMA) approved small molecules will be tested in PDO models to evaluate their potential to reverse chemotherapy resistance, supporting drug repurposing strategies. This study aims to establish a functional, patient-specific platform for assessing chemoresistance and to contribute to the development of personalized therapeutic approaches in breast cancer.

This study evaluates whether preoperative shoulder range-of-motion exercises influence postoperative inflammatory response, pain, shoulder function, and quality of life in patients with locally advanced breast cancer undergoing modified radical mastectomy.

This is a Study to Evaluate the Efficacy and Safety of Multiple Combination Therapies with FWD1802 in Subjects with ER-positive/HER2-negative Unresectable Locally Advanced or Metastatic Breast Cancer

This is a multicenter, open-label, Phase Ib/II randomized study designed to evaluate the safety, tolerability, dose-limiting toxicities (DLTs), and preliminary antitumor activity of JSKN016 in combination with the oral selective estrogen receptor degrader (SERD) D-0502 in patients with locally advanced or metastatic hormone receptor-positive (HR+), HER2-negative breast cancer who have previously progressed on CDK4/6 inhibitor-based endocrine therapy. Approximately 60 patients will be randomized in a 1:1 ratio to receive JSKN016 administered intravenously every 2 weeks (Q2W) or every 3 weeks (Q3W), in combination with daily oral D-0502. Each dosing cohort will include a safety lead-in phase to assess DLTs prior to cohort expansion. Tumor response will be assessed according to RECIST v1.1.

This study is a prospective, exploratory clinical study design, and plans to enroll 33 patients with HR+HER2 low expression breast cancer who received pyrotinib combined with darcili and standard endocrine neoadjuvant therapy to evaluate the efficacy of this regimen in HR+HER2 low expression breast cancer. Imaging evaluation was performed according to RECIST 1.1 criteria, and tumor imaging evaluation was performed by the participating center. The pathological evaluation after surgery of neoadjuvant patients was the pCR assessed by the pathologist of the participating center.