The sequencing results of single-cell transcriptomes from both the unilateral IRI model and the unilateral ureteral obstruction (UUO) model (http://humphreyslab.com/SingleCell/) reveal that RacGAP1 is significantly up-regulated in the benignly proliferating and repairing PTECs (S, upplementary, F, igure, S, 1). This evidence concerns the gene RACGAP1 and Ureteral obstruction.