FOXP3 and glioblastoma: We also conducted bioinformatics analysis in human tumor samples submitted to The Cancer Genome Atlas (TCGA) database, and we found that higher FoxP3+ Tregs correlated with lower survival in kidney renal clear cell carcinoma (KIRC) (Supplemental Figure 5, A and B) and glioblastoma multiforme (GBM) (Supplemental Figure 5, C and D).