Assessment of epithelial marker genes showed similar expression scores across fresh and FFPE tissue samples, as EPCAM, KRT5, SCGB3A2, FOXJ1, AGER and SFTPC marked tumor epithelial, Basal, Transitional, Ciliated, AT1, and AT2 cells, respectively, across the datasets (Fig. 2c). Here, KRT5 is linked to neoplasm.