As side-population cells of pancreatic cancer that overexpress ABCG2 have been identified as promoting carcinogenesis (Ho et al, 2007; Shi et al, 2008; Dou et al, 2009; Wang et al, 2009), we also investigated the effects of hsa-miR-520h on these cells. Here, ABCG2 is linked to familial pancreatic carcinoma.