Idiopathic Nephrotic Syndrome (INS) is the first glomerulopathy in children and 60% of the patients develop Steroid-Dependant Nephrotic Syndrome (SDNS). Depleting B cells demonstrated the ability to increase relapse free survival and to decrease the number of relapse and the need of other immunosuppressive drugs. However, the remission rate after 2 years is only 30 to 40%.~The aim of the study is to study the ability of intravenous Immunoglobulin to improve remission rate in SDNS when added associated with Rituximab compared to a treatment by Rituximab alone.
Idiopathic Nephrotic Syndrome (INS) is the first glomerulopathy in children and 60% of the patients develop Steroid-Dependant Nephrotic Syndrome (SDNS). Recently, rituximab (RTX), a humanized anti-CD20 antibody depleting B cells demonstrated the ability to increase relapse free survival and to decrease the number of relapse and the need of other immunosuppressive drugs. However, the remission rate after 2 years is only 30 to 40%.~The aim of the study is to study the ability of intravenous Immunoglobulin to improve remission rate in SDNS when added associated with Rituximab compared to a treatment by Rituximab alone.