SLC1A5 and adenocarcinoma: Furthermore, SLC1A5 protein expression was significantly higher in adenocarcinomas with lymph node metastases compared to node negative tumors (r(s) = 0.34, P = 0.028) and in adenocarcinomas with higher pTNM stage (r(s) = 0.39, P = 0.009) (Table 2).