主题词：Cancer Immunotherapy and Biomarkers; Ferroptosis and cancer prognosis; Single-cell and spatial transcriptomics; Immune cells in cancer; RNA modifications and cancer; Cancer Genomics and Diagnostics; Cancer-related molecular mechanisms research; Epigenetics and DNA Methylation; Cancer Cells and Metastasis; Cancer, Hypoxia, and Metabolism; Extracellular vesicles in disease; MicroRNA in disease regulation; Immune Cell Function and Interaction; COVID-19 Clinical Research Studies; CAR-T cell therapy research; Circular RNAs in diseases; Immunotherapy and Immune Responses; Gut microbiota and health; Ubiquitin and proteasome pathways; Cancer-related gene regulation; interferon and immune responses; Lung Cancer Treatments and Mutations; Inflammasome and immune disorders; SARS-CoV-2 and COVID-19 Research; Cancer, Lipids, and Metabolism