by Perelman School of Medicine at the University of Pennsylvania Integrated metabolomics and transcriptomics data analysis of human kidney samples. a, Total of 50 human kidney samples were collected for metabolomics analysis; including healthy controls (n = 25) and patients with KD (n = 25). b, Volcano plot of metabolites showing significant changes in human diseased kidneys. The x axis shows log2 fold change (log2FC)....