Multivariable Cox regression analysis, incorporating tumor epithelial and stromal/immune infiltration scores as covariates, confirmed LAPTM4B overexpression as an independent prognostic factor for poor OS (HR = 1.42; CI, 1.09–1.86, p = 0.009; Figure S4H) and DFS (HR = 1.31; CI, 1.01–1.69, p = 0.039; Figure S4I) after adjusting for cellular composition variations across samples. This evidence concerns the gene LAPTM4B and neoplasm.