The membrane transporter ABCC1 (MRP1), which confers multidrug resistance to cancer cells, was also enriched in the Panc-1 library, along with three other SLC transporters, SLC4A2, SLC30A1, and SLC12A7 (KCC4), plus the epidermal growth factor receptor EGFR and lipid transport protein ESYT2. This evidence concerns the gene CD9 and cancer.