PPP1R13B and glioblastoma: This study demonstrated significant downregulation of ASPP1 in GBM, KIRC, LGG, BLCA, COAD, LIHC, BRCA, PAAD, SKCM, STAD, LUAD, PRAD, READ, LUSC, UCS, THCA and TGCT, suggesting this protein might be involved in tumor suppression.