SPINK1 and prostate cancer: We investigated the association of the gene expression pattern of the 98 DEGs with molecular prostate cancer subtypes ERG-fusion positive (ERG+), non-ERG ETS fusion positive (non-ERG ETS+), over-expression of SPINK1 (SPINK1+), and triple negative (ERG − / non-ERG ETS -/SPINK1 -) [9,10].