Clinical and histological features of lupus nephritis in Japan: A cross‐sectional analysis of the Japan Renal Biopsy Registry (J‐RBR)

Aim The clinical and histological features of lupus nephritis (LN) are highly variable, depending on race and ethnicity. The Japan Renal Biopsy Registry (J‐RBR) is a nationwide registry of renal biopsies. Here, we report a cross‐sectional analysis of Japanese LN using the J‐RBR database. Methods Out of 18 463 patients registered in the J‐RBR, 331 LN patients, who received renal biopsy for the first time, were extracted and their clinical...