Finally, we using the TIMER database to examine the correlation between BIRC5 expression and immune infiltration levels for diverse immune cells in LGG; results indicated that BIRC5 was significantly correlated with the level of B cells (cor = 0.271 p < 0.001), CD8+ T cells (cor = 0.158, p < 0.001), CD4+ T cells (cor = 0.208, p < 0.001), macrophages (cor = 0.224, p < 0.001), neutrophils (cor = 0.207, p < 0.001), and dendritic cells (cor = 0.279, p < 0.001), and positively correlated with tumor purity (cor = 0.165, p < 0.001) (Figure 8C). Here, CD4 is linked to neoplasm.