Renal outcomes of transient proteinuria in patients with systemic lupus erythematosus treated with corticosteroid therapy alone.

Two-thirds of SLE patients who showed improvement in proteinuria after corticosteroid alone maintained the non-proteinuric state without renal dysfunction. Thus, performing a kidney biopsy at the first onset of proteinuria could be delayed in patients who show an improvement in proteinuria after treatment with corticosteroids.