IgA-nephropathy is seen in -

IgA nephropathy (IgAN) is a mesangial proliferative glomerulonephritis characterized by diffuse mesangial deposition of IgA. At one time, the term benign recurrent hematuria was also used for IgAN, but it is now known to be an impoant cause of end-stage renal disease (ESRD) . Ref Harrison20th edition pg 299