SLC3A2 and pancreatic ductal adenocarcinoma: Furthermore, its expression in pancreatic ductal adenocarcinoma was not a significant prognostic factor for overall survival (hazard ratio (HR) 0.64 (p=0.271) for CD98hc expression in normal adjacent tissue (NAT) and HR=0.77 (p=0.375) for CD98hc expression in tumor tissue) as illustrated by the Kaplan-Meier curves of four groups categorized according to CD98hc expression (Figure 3).