COL17A1 and cancer: Employing a public dataset of RNA expression from a variety of cancers and normal tissues to investigate the expression pattern of COL17A1, the gene encoding collagen XVII, revealed COL17A1 expression was downregulated in the majority of cancer types relative to normal tissues [Fig. 1A (blue bars)]; however, it was upregualted in several cancer types, including PDAC [Fig. 1A (red bars); ref. 20].