GATA2 and prostate adenocarcinoma: We identified mRNA level of GATA2 gene, the important transcription factor involved in PCa metastasis and castration resistance [27, 28], was significantly and positively associated with ST6GALNAC5 mRNA level in TCGA-PRAD (p < 0.0001, r = 0.4181; Fig. 7A) and GSE21032 (p = 0.0008, r = 0.2704; Fig. 7B).