Effects of the Use of "de Novo" Everolimus in Renal Tranplant Population

This is an open, randomized, single-center study. The selected patients will be first divided into two major groups according to the type of organ to be transplanted: standard criteria donor (SCD) or extended criteria (ECD) kidney. Then, each group will be randomly allocated to one of the treatments: tacrolimus (TAC) or everolimus (EVL). All patients received induction therapy with basiliximab (BXB) and maintenance with Mycophenolate Sodium (MYF) and prednisone (P). This study will evaluate as Primary objectives: To characterize the molecular profile of cytokines in kidneys obtained from deceased donors such as \"standard\" (SCD) and extended criteria (ECD) in biopsies taken before and after transplantation and to evaluate the effect of treatment with everolimus (EVL) in the expression of these molecules. And as Secondaries objectives: To correlate the pattern of cytokines with delayed graft function (DGF), cold ischemia time, episodes of acute rejection and patient and graft survival.