DPP4 and chronic pancreatitis: Ten potential pathogenic mutations (in the SERPINB2-, CNTNAP4-, DENND4B-, DPP4-, FGFBP2-, MIGA2-, POLE-, SNRNP40-, TOP2B- and ZDHHC18 genes) could be identified and confirmed in individual cases, yet no mutation was observed in more than one of the 50 analysed cases (including also chronic pancreatitis).