主题词：SARS-CoV-2 and COVID-19 Research; COVID-19 Clinical Research Studies; Cancer Immunotherapy and Biomarkers; RNA modifications and cancer; Immune Cell Function and Interaction; CAR-T cell therapy research; Epigenetics and DNA Methylation; Immune cells in cancer; Immunotherapy and Immune Responses; Cancer, Hypoxia, and Metabolism; Ubiquitin and proteasome pathways; interferon and immune responses; Cancer Cells and Metastasis; Cancer-related molecular mechanisms research; Cancer Genomics and Diagnostics; MicroRNA in disease regulation; Long-Term Effects of COVID-19; Cancer-related gene regulation; CRISPR and Genetic Engineering; Phagocytosis and Immune Regulation; Autophagy in Disease and Therapy; Extracellular vesicles in disease; T-cell and B-cell Immunology; RNA Research and Splicing; Monoclonal and Polyclonal Antibodies Research