Clinical Research Directory

Association of BAL Fluid T-Cell Immune Activity With Tumor PD-L1 Expression and Its Prognostic Value: A Prospective Observational Study

This prospective observational study aims to evaluate whether immune profiles of T-cell subsets in bronchoalveolar lavage fluid can complement tumor PD-L1 expression, assessed by immunohistochemistry in tumor tissue specimens, in predicting clinical outcomes in patients with advanced lung cancer. Although tumor PD-L1 expression measured on tissue biopsies is widely used to guide immunotherapy decisions, its predictive value is limited by spatial heterogeneity and sampling variability. By analyzing activated, exhausted, and regulatory T-cell populations in bronchoalveolar lavage fluid and examining their association with tissue-based tumor PD-L1 expression, this study seeks to determine whether combining local immune biomarkers with PD-L1 expression improves the prediction of treatment response and survival in patients receiving standard-of-care systemic therapy.

Mechanistic Study of SPARC-Mediated Regulation of Neutrophil Extracellular Trap Formation in the Brain Metastatic Microenvironment of Breast Cancer

The objective of this observational study is to investigate the characteristics of the tumor microenvironment in patients with brain tumors using multi-modal magnetic resonance imaging (MRI). The primary research question it aims to address is: • Can multi-modal MRI effectively characterize features of the immune microenvironment in brain tumor patients? Participants: Eligible participants who have been diagnosed with a brain tumor will undergo multi-modal MRI scans for detailed assessment of tumor microenvironment features.