In particular, we observed that Cav-1 was completely negative (Grade 0) in both glomerular and peritubular capillaries in cases of arteriosclerosis-related vascular injury (2 cases), renal interstitial fibrosis (1 case), post-transplant membranous glomerulonephritis (2 cases), and acute pyelonephritis (1 case) (Figure S3). Here, CAV1 is linked to acute pyelonephritis.