University of Texas at Houston - Section of Nephrology, University of Texas at Houston - Section of Nephrology, University of Texas at Houston - Section of Nephrology, University of Texas at Houston - Section of Nephrology, Baylor College of Medicine, MD Anderson Cancer Center - Metabolomics Core Facility, MD Anderson Cancer Center - Metabolomics Core Facility, MD Anderson Cancer Center - Metabolomics Core Facility, MD Anderson Cancer Center - Metabolomics Core Facility, University of Texas at Houston - Section of Nephrology and University of Texas at Houston - Section of Nephrology