SPINK1 and neoplasm: The molecular tumor subtypes of the 49 samples were consistent with other reports of tumor subtypes: 1) we identified tumor subtypes based on expression of ERG, ETV1 and SPINK1, with the same inverse correlation of ERG/ETV1 expression to SPINK1 expression; and 2) the prevalence of ERG fusion events was higher in the young cohort compared to the older cohort [6,8,9,31,32].