CD44 and pancreatic adenocarcinoma: Additionally, CD44 level was related to adverse DSS of BLCA, KIRC, HNSC, PAAD, STAD and LGG (HR>1, P<0.05), but CD44 was a good prognostic factor for DSS of BRCA cohort (HR<1, P<0.05) (Supplementary Figure S2B).