ENG and fibrosis: With respect to the clinical data, the endoglin-positive interstitial area negatively correlated with estimated glomerular filtration rate (eGFR) (p < 0.02), positively correlated with the presence of hypertension (p < 0.05), Interstitial fibrosis and tubular atrophy (IFTA) score (p < 0.001), and serum creatinine concentration (p < 0.001) (Figure 1C).