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Mycophenolate mofetil (MMF) is used extensively for the induction therapy of lupus nephritis (LN) and has even outpaced intravenous (i.v.) cyclophosphamide (CyP) as the initial choice of therapy. There are no studies comparing the response of MMF with standard dose i.v. CyP in Indian patients with LN. We conducted a 24-week prospective, randomized, open-label trial comparing oral MMF with monthly i.v. CyP as induction therapy for active biopsy proven Class III and IV LN. The primary end-point was response to treatment at 24 weeks, and the secondary end-points were complete remission, Systemic Lupus Erythematosus Disease Activity Index scores (SLEDAI) and adverse reactions. Of the 40 patients, 17 were randomized to the MMF group and 23 to the i.v. CyP group. Complete remission was seen in nine (52.94%) patients in the MMF group and 11 (47.82%) in the i.v. CyP group. Partial remission was seen in six (35.30%) in the MMF group and nine (39.13%) in the i.v. CyP group. At six months, the cumulative probability of response was not statistically significant between the two groups (P = 1.000). MMF is comparable to i.v. CyP in the management of LN in Indian patients having an equal safety profile. The dose of MMF required was lower than the conventional doses used in other studies suggesting genetic or environmental factors in the Indian population influencing the metabolism of MMF, which requires further evaluation. The cost of MMF is a limiting factor in its use. The use of i.v. CyP is favorable as the monthly doses ensure compliance and is also cost-effective.
Mendonca et al. (Sun,) studied this question.