Comparison of chlorambucil, azathioprine or cyclophosphamide combined with corticosteroids in the treatment of lupus nephritis

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Abstract
163 patients with diffuse lupus glomerulonephritis, proven by renal biopsy, were divided into four therapeutic trial groups: 67 were put on corticosteroids alone, 11 on corticosteroids and azathioprine, 32 on corticosteroids and cyclophosphamide, and 53 on corticosteroids and chlorambucil and were followed up for several years. The addition of azathioprine to corticosteroids did not increase the survival rate, improve the renal function or alter the grim prognosis of the patients. Cyclophosphamide appeared to influence favourably the pathological lesion and the renal function when added to corticosteroids, and the disease progressed at a slower rate. The fatal side effects nearly balanced the therapeutic value of cyclophosphamide. Patients on corticosteroids and chlorambucil had an excellent course. This therapeutic regimen resulted in resolution or regression of the renal pathology, marked improvement of the renal function and marked improvement of the survival rate. The authors believe that this therapeutic regimen holds the best chance of becoming the standard treatment for lupus nephritis, particularly since the side effects of chlorambucil were minimal.