Idiopathic Membranous Nephropathy in Two Brothers

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Abstract
Idiopathic membranous nephropathy has been reported rarely to develop in genetic association with certain HLA antigens. This paper describes two male siblings presenting with nephrotic syndrome with histologically proven membranous nephropathy. The younger brother maintained a normal renal function with slight proteinuria during the 3 years of follow-up, but the older one experienced a rapid decline in renal function and had to be put on maintenance hemodialysis. No clinical evidence of contributory underlying disease such as malignancy or systemic lupus erythematosus could be found. HLA typing was carried out in the two patients and in members of their family. Several HLA antigens were found to be shared by the two patients. However, the HLA antigens which have been reported to be associated with idiopathic membranous nephropathy were not found in either of them.