Our previous study showed that radiolabeled 059-053 accumulates in high levels in MIAPaCa-2 xenograft pancreatic cancer tumors with high CD147 expression, and BxPC-3 cells have low CD147 protein expression in vitro [15], although we observed discrepancies between in vitro and in vivo expression of another antigen in our previous study [31]. The gene discussed is BSG; the disease is familial pancreatic carcinoma.