Lung Squamous Cell Carcinoma Clinical Trial
Official title:
A Mechanism Study to Investigate the Difference in Efficacy of Neoadjuvant PD-1 Blockade Combined With Chemotherapy in the Treatment of IIA-IIIB Stage Lung Squamous Cell Carcinoma
To explore mechanisms of immunotherapy resistance and relation to changes in the TME before and after PD-1 blockade combined with chemotherapy
The biobank of thoracic surgery department of Tangdu Hospital collected pre-treatment tissues from patients during endoscopy. The investigators retrospectively summarized the clinical characteristics of these patients and patients with operable locally advanced lung squamous cell carcinoma were selected and followed. The investigators plan to employ snRNA-seq and scRNA-seq respectively to profile 20 samples of paired pre-treatment and post-treatment tumors from ten patients (discovery cohort) to create a cell atlas for analysis, and spatial transcriptomics to examine 8 samples from four patients. In discovery cohort, estimated 5 patients achieve major pathological response (MPR) and 5 patients achieve non-MPR after NICB. After analyzing the results of discovery cohort, the investigators will collect frozen tissues and formalin-fixed, paraffin-embedded (FFPE) tissue from our biobank for bulk RNA-seq analysis or immunohistochemistry (IHC) staining as validation cohort to further investigate the predictive value and biological significance of our markers. ;
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