Although our data indicated minimal expression of CXCL12 by pancreatic cancer cells (Figure 1B), it is reported to be expressed at high levels by stromal cells and at sites of pancreatic cancer metastasis (Mori et al, 2004; Saur et al, 2005; Matsuo et al, 2009). Here, CXCL12 is linked to pancreatic neoplasm.