Efficacy of Mycophenolate Mofetil in Patients with Diffuse Proliferative Lupus Nephritis
Tak Mao Chan, M.D., Fu Keung Li, M.D., Colin S.O. Tang, B.Sc., Raymond W.S. Wong, M.D., Guo Xiang Fang, M.D., Yu Lian Ji, M.D., Chak Sing Lau, M.D., Andrew K.M. Wong, M.D., Matthew K.L. Tong, M.D., Kwok Wah Chan, M.D., Kar Neng Lai, M.D., for The Hong Kong#x2013;Guangzhou Nephrology Study Group
Background The combination of cyclophosphamide and prednisoloneis effective for the treatment of severe lupus nephritis buthas serious adverse effects. Whether mycophenolate mofetil canbe substituted for cyclophosphamide is not known.
Methods In 42 patients with diffuse proliferative lupus nephritiswe compared the efficacy and side effects of a regimen of prednisoloneand mycophenolate mofetil given for 12 months with those ofa regimen of prednisolone and cyclophosphamide given for 6 months,followed by prednisolone and azathioprine for 6 months. Completeremission was defined as a value for urinary protein excretionthat was less than 0.3 g per 24 hours, with normal urinary sediment,a normal serum albumin concentration, and values for serum creatinineand creatinine clearance that were no more than 15 percent abovethe base-line values. Partial remission was defined as a valuefor urinary protein excretion that was between 0.3 and 2.9 gper 24 hours, with a serum albumin concentration of at least3.0 g per deciliter.
Results Eighty-one percent of the 21 patients treated with mycophenolatemofetil and prednisolone (group 1) had a complete remission,and 14 percent had a partial remission, as compared with 76percent and 14 percent, respectively, of the 21 patients treatedwith cyclophosphamide and prednisolone followed by azathioprineand prednisolone (group 2). The improvements in the degree ofproteinuria and the serum albumin and creatinine concentrationswere similar in the two groups. One patient in each group discontinuedtreatment because of side effects. Infections were noted in19 percent of the patients in group 1 and in 33 percent of thosein group 2 (P=0.29). Other adverse effects occurred only ingroup 2; they included amenorrhea (in 23 percent of the patients),hair loss (19 percent), leukopenia (10 percent), and death (10percent). The rates of relapse were 15 percent and 11 percent,respectively.
Conclusions For the treatment of diffuse proliferative lupusnephritis, the combination of mycophenolate mofetil and prednisoloneis as effective as a regimen of cyclophosphamide and prednisolonefollowed by azathioprine and prednisolone.
Source Information
From the Nephrology Division, Department of Medicine, University of Hong Kong and Queen Mary Hospital, Hong Kong, China.
Address reprint requests to Dr. T.M. Chan at the Nephrology Division, Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Rd., Hong Kong, China, or at dtmchan{at}hku.hk.
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