The CKD Epidemiology Collaboration (CKD-EPI) is a research group with major interests in measurement and estimation of GFR (CKD-EPI GFR) and evaluation of surrogate endpoints for clinical trials in CKD (CKD-EPI CT).  CKD-EPI was founded by Andrew S. Levey MD, who served as Director from 2004 to 2018 and continues to serve as co-director.  Lesley A. Inker has been the Director of the Data Coordinating Center (DCC) from 2004 and Co-Director since 2018.