ABO and familial pancreatic carcinoma: In addition, two recently completed genome-wide association studies (GWAS), PanScan1 and PanScan2, have identified variants in ABO (rs505922), 1q32.1 (rs3790844), 13q22.1 (rs9543325) and 5p15.3 (rs401681) that are associated with a modestly increased risks of pancreatic cancer [27], [28].