Early-Childhood Membranous Nephropathy Due to Cationic Bovine Serum Albumin

The M-type phospholipase A2 receptor (PLA2R) was recently identified as a candidate antigen in 70% of cases of idiopathic membranous nephropathy, a common form of the nephrotic syndrome. The nature of antigens involved in other idiopathic and secondary membranous nephropathies remains unclear.