Based on these data, this study aimed at a comprehensive analysis of the correlation between stromal cells (T cells, macrophages, myofibroblasts) and ductal/carcinoma cell marker (proliferation, FoxP3, L1CAM and vimentin expression) in CP and PDAC as well as the prognostic significance of these variables in order to better integrate experimental data obtained by in vitro and in vivo studies. The gene discussed is L1CAM; the disease is carcinoma.