HLA class II typing and idiopathic IgA nephropathy (IgAN): DQB1*0301, a possible marker of unfavorable outcome.

Previous studies have reported associations between HLA antigens and Idiopathic IgA Nephropathy (IgAN). Nevertheless most of the studies were performed by serology. Thus we decided to perform the HLA class II typing of 58 patients by molecular biology techniques. We report a small increase of DRB104. But the main result of our study is the identification of a strong association between HLA DQB10301 and IgAN patients with an unfavorable outcome.