TGFB1 and ganglioneuroma: Elevated urinary TGF-β1 levels were identified in patients with crescentic nephritis compared to healthy individuals (653 ± 306 vs. 310 ± 140 ng/24 h) and to those of patients with other types of proliferative GN (653 ± 306 vs. 441 ± 131 ng/24 h, p < 0.05) (Fig. 2).