Cioffi M, Trabulo SM, Sanchez-Ripoll Y, et al. The miR-17-92 cluster counteracts quiescence and chemoresistance in a distinct subpopulation of pancreatic cancer stem cells. Gut 2015;64:1936-48. Two errors have been corrected in the text. In the paragraph “Knockdown of p21 inhibits CSC phenotypes including chemoresistance”, line 5 has been corrected to “… we therefore focused on p21 as it was specifically upregulated in chemoresistant CSCs (figure 2A)”. In the same paragraph, line 16 has been corrected to “and became chemosensitive to gemcitabine (figure 6E)”.