Abstract
Systemic lupus erythematosus was diagnosed in a patient at 43 years old. When proteinuria recurred at 57 years old, the first kidney biopsy was performed, and class IV-G (A) +V lupus nephritis was diagnosed. The prednisolone dose was increased to 40 mg/day, and cyclosporine A was introduced. After 1 year, proteinuria had decreased to 0.1 g/day. Prednisolone was discontinued three years later, and cyclosporine A was continued. Thereafter, proteinuria did not reoccur. At 67 years old, a second kidney biopsy showed complete remission of lupus nephritis. Cyclosporine A enabled permanent discontinuation of glucocorticoids in a patient with lupus nephritis.