As shown in Supplemental Table 4, miR-155 expression was associated with unfavorable prognostic indicators including high tumor grade (overall P = 0.0007; G2 vs. G3 P = 0.0053), reduced expression of ER (r = −0.243; P = 0.0002) and PgR (r = −0.240; P < 0.0001), and high Ki-67 expression (r = 0.215; P = 0.0005). Here, PGR is linked to neoplasm.