IL4R and familial pancreatic carcinoma: All tested pancreatic cancer cell lines AsPC-1, BxPC-3, Capan-1, COLO-357, MIAPaCa-2, PANC-1 and T3M4 expressed both IL-4Rα (140 kDa) and IL-13Rα1 (47 kDa) at various expression levels (Figure 1A).