PLBD1 and glioblastoma: The results showed that high PLBD1 expression was strongly positive related to various levels of infiltrated immune cells, especially immunosuppressive cells such as Myeloid-derived suppressor cells (MDSCs) and M2 macrophages in LGG, LIHC, GBM, THCA, etc (Figure 4C and Supplementary Figure 5A-F).