Immunosuppressive therapy in lupus nephritis: the Euro-Lupus Nephritis Trial, a randomized trial of low-dose versus high-dose intravenous cyclophosphamide.
Arthritis Rheum. 2002;46(8):2121–31.
Cyclophosphamide (with AZA) produces good long-term results in LN.
N Engl J Med. 2011;365(20):1886–95
MMF was superior to AZA in maintaining a renal response and preventing relapse in patients with LN who had a response to induction therapy.