Long-term results of two unconventional agents in steroid-dependent nephrotic children.

Children with steroid-dependent minimal change nephrotic syndrome are prone to serious steroid side effects. Alternative therapies, such as oral cyclophosphamide, may also have serious side effects. We conducted this novel prospective study to compare the long-term efficacies of levamisole and I.V. pulse cyclophosphamide as therapies with potentially fewer side effects. This study included 40 children with idiopathic steroid-dependent minimal change nephrotic syndrome (age 3-15 years; 31 boys and 9 girls). The patients were randomized into two equal groups. One group received levamisole 2.5 mg/kg on alternate days (levamisole group) while the other group received I.V. cyclophosphamide 500 mg/m2/month for six months (cyclophosphamide group). Prednisolone was gradually withdrawn. After stopping treatment, the number of patients that maintained remission was five (25%) in each group at six months, four (20%) versus two (10%) at one year and three (15%) versus one (5%) at two years in the levamisole and cyclophosphamide groups respectively, and one (5%) in each group at three and four years. The overall side effects were mild and both drugs were well tolerated. In view of the results, we recommend trial of levamisole before adopting other therapies with more serious side effects in such patients.