CDKN1B and glioblastoma: The findings revealed that CDKN1B expression was statistically negatively correlated with GBM but statistically positively correlated with the estimated infiltration values of CAFs from TCGA, including CESC, COAD, HNSC, HNSC [HPV (human papillomavirus)], LUAD, PAAD, STAD, and TGCT (Fig. 4).