Minimal change disease is a common cause of nephrotic syndrome in adults. Standard treatment is with high dose steroids which is often effective in controlling the nephrotic syndrome but has a high morbidity due to the side effects of the steroids. There is also a high relapse rate,therefore many patients require long term steroid therapy to control their disease which has significant morbidity and mortality. Some patients are or also become steroid resistant. There are studies showing the effectiveness of alkylating agents such as cyclophosphamide but the use of these drugs is limited by their toxicity, including increased rates of infection, cancers and infertility.