TFF1 and Barrett esophagus: Other significantly differentially-expressed genes in BE vs NE included gastrokine 1 (GKN1, 34 fc, P = 2.72E-15), TFF2 (37 fc, P = 5.47E-15), SULT1C2 (24 fc, P = 4.86E-15) prominin 1 (PROM1, 27 fc, P = 7.10E-16), and trefoil factor 1 (TFF1, 40.0 fc, P = 6.17E-14) (Table 2).