In Supplemental Figure S2, we show that in GBM tumors, the expression of sperm/testicular-specific proteins, ACRBP, SPATA12, TSSK6, HSPB9, and CATSPER1 are highly cross-correlated with each other and with the representative RORC-Treg markers CTLA4 and RORC. This evidence concerns the gene HSPB9 and glioblastoma.