Introduction: The use of mycophenolate mofetil (MMF) is limited by gastrointestinal adverse events (GI-AEs). Enteric-coated mycophenolate sodium (EC-MPS) was developed to avoid these effects.

Methods: This multicenter prospective study sought to analyze the clinical benefit of EC-MPS among 726 stable renal transplant recipients in Spain. The data collection included: doses and trough levels of mycophenolic acid (MPA) and calcineurin inhibitors (CNI), renal function, routine biochemical parameters (3-6 months preconversion, baseline, and 1, 3, 6, and 12 months of EC-MPS initiation), as well as graft and patient survivals and adverse events.

Results: The main indication for EC-MPS introduction was GI-AEs associated with MMF (44.1%). Preliminary data showed that before introduction of EC-MPs there was a progressive deterioration of renal function, as demonstrated by a negative slope of the creatinine clearance (P < .005). However, after EC-MPS conversion, the slope became positive (P < .05), suggesting an improvement in renal function. Only in 4.8%, EC-MPS was stopped due to GI-AEs. There was an increase in MPA serum levels (P < .01) and a reduction in CNI doses. Interestingly, 80% of 85 patients without MMF treatment because of severe GI-AEs tolerated EC-MPS, including 43% who could be treated with adequate doses of EC-MPS (>or=720 mg/d).

Conclusions: There was a significant improvement in GI-AEs after conversion from MMF to EC-MPS. The use of lower doses of CNI and the better tolerability of EC-MPS could be the underlying causes of improvement in renal function.

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http://dx.doi.org/10.1016/j.transproceed.2009.06.067DOI Listing

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