This finding was corroborated by IHC CXCR3 staining of kidney sections from patients with ANCA-GN treated with 1 up to 3 pulses of i.v. GCs (ANCA-GN + steroids) or without treatment (ANCA-GN) before kidney biopsy; the staining revealed a reduction in CXCR3+ intrarenal cells in the treatment group (Figure 6F). The gene discussed is CXCR3; the disease is ganglioneuroma.