TNF and glioblastoma: To further elucidate differences in the immune microenvironment of patients in the subtype of TNF-related lncRNAs, we assessed the extent of immune cell infiltration of patients in our 3 GBM cohorts by the expression levels of gene markers in immune cells, where the marker genes in our immune cells were derived from the literature (25), and we used the software ESTIMATE and MCP-counter to evaluate the immune microenvironment.