In accordance with the results of western blot, the levels of PDCD5 protein were significantly decreased in endometrioid endometrial carcinoma tissues compared with control endometrium (P < 0.01) (Figs. 3a–e, 4a), which suggested that the levels of PDCD5 mRNA and protein are inconsistent in endometrioid endometrial carcinoma tissues. Here, PDCD5 is linked to endometrial endometrioid carcinoma.