This is a fascinating study with significant implications for preservation studies. The authors show that organ donors after brain death subjected to mild cooling had significantly less DGF than donors subjected to conventional normothermia before organ retrieval. In fact the DMC stopped the study on the basis that efficacy had been demonstrated before completion of recruitment. The effect was much more striking in expanded criteria donors. What does this mean in terms of ongoing trials of machine preservation after organ retrieval in kidney transplantation? Would the two approaches be complementary or would ongoing trials need to be repeated in organ donors who have been mildly cooled before retrieval of the kidneys? Certainly this study has provided food for thought in the preservation world!