Background: Statins are lipid-lower agents with pleiotropic effects. Beyond the traditional effect as inhibitors of 3-hydroxy-3methylglytaryl coenzyme A (HMG-CoA) reductase, it has anti-inflammatory and immunomodulatory properties. The administration of atorvastatin to lupus-prone model NZB/W F1 mice results in a significant reduction in serum IgG anti-dsDNA Abs and decreased proteinuria. In a pilot study with three patients with SLE, simvastatin induced rapid and significant reduction in proteinuria levels. However, further randomized double-blinded placebo-controlled study is pending.