In addition, only PPP3CB and PPP6C showed favorable prognostic values with regard to protein level, whereas PPP1CA, PPP1CB, PPP1CC, PPP2CA, PPP2CB, and PPP3CA showed unfavorable prognostic values in pancreatic cancer (P<0.05, Supplementary Table S3). Here, PPP6C is linked to familial pancreatic carcinoma.