A Cox regression was carried out on all parameters which had a p<0.1 in univariate survival analysis, i.e. Laurén-phenotype, T-, N-, M-, L-, V-, and R-category, UICC-stage, lymph node ratio, tumor grade, MSI-, MET-, PD-L1- (tumor and immune cells), and PD-1-status (immune cells). This evidence concerns the gene PDCD1 and neoplasm.