KLK6 and adenocarcinoma: Supplementary Table 1 presents some pathological characteristics of the analyzed cases, including the disease stage, lymph node positivity for tumor cells, and disease recurrence within 5 years after surgery. All seven cases used for the analysis of KLK6 and HMGA2 expression were diagnosed as moderately differentiated adenocarcinomas. In this limited set, the disease recurrence was observed in patients who had high KLK6 score and positive HMGA2 staining in the tumor samples (Supplementary Table 1).