主题词：Immune cells in cancer; Epigenetics and DNA Methylation; SARS-CoV-2 and COVID-19 Research; Ferroptosis and cancer prognosis; RNA modifications and cancer; Cancer Immunotherapy and Biomarkers; Cancer-related molecular mechanisms research; Cancer, Hypoxia, and Metabolism; Cancer Cells and Metastasis; interferon and immune responses; Immunotherapy and Immune Responses; Inflammasome and immune disorders; Cancer Genomics and Diagnostics; Extracellular vesicles in disease; Ubiquitin and proteasome pathways; MicroRNA in disease regulation; COVID-19 Clinical Research Studies; Cancer-related gene regulation; Autophagy in Disease and Therapy; RNA Research and Splicing; Gut microbiota and health; Virus-based gene therapy research; Immune Cell Function and Interaction; Cancer, Lipids, and Metabolism; CRISPR and Genetic Engineering