Although age and gender were shownin other studies to influence the levels of RBP4 [46, 47, 48], in our study the ageof DCM group has a higher level than NDCM group, in order to eliminate thisinterference factor, we adjusted HR by multivariate logistic regression analyses,the RBP4 level was independently predictive of DCM in diabetes. The gene discussed is RBP4; the disease is diabetes mellitus.