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Comparison of the exposure of mycophenolate mofetil and enteric-coated mycophenolate sodium in recipients of kidney-pancreas transplantation

Julie Belliere, Laure Esposito, Peggy Gandia, Jean Pierre Duffas, Federico Sallusto, Isabelle Cardeau-Desangles, Arnaud Del Bello, Lionel Rostaing, Nassim Kamar

(Department of Nephrology and Organ Transplantation, CHU Rangueil, Toulouse, France)

Ann Transplant 2014; 19:76-81

DOI: 10.12659/AOT.889691


Background: Patients with a simultaneous pancreas–kidney transplant (SPKT), especially those with gastroparesis, often have gastro-intestinal (GI) disorders that can modify immunosuppressant pharmacokinetics. We compared the MPA 12-hours area under the curve (AUC0–12) in SKPT patients with severe gastroparesis receiving mycophenolate mofetil (MMF) or enteric-coated mycophenolate sodium (EC-MPS).
Material and Methods: Fifteen SKPT patients having a severe gastroparesis were switched, at 182 (69–1523) days post-transplantation, from MMF to EC-MPS because of GI disorders. MPA AUC0–12 values were obtained before and after the switch, ie, under MMF (500 mg b.i.d.) at 169 (51–1522) days post-transplantation and EC-MPS (360 mg b.i.d.) at 102 (26–355) days after the switch.
Results: Mean MPA AUC0–12 h did not differ significantly under MMF and EC-MPS, ie, 40.13±14 and 38.24±15.5 mg*h/L, respectively. Trough and maximal MPA concentrations were similar with both MPA formulations. Although all patients had GI disorders under MMF (100%), only 3 had persistent GI disorders under EC-MPS (20%) (p<0.001).
Conclusions: In SKPT patients with severe gastroparesis, exposure to MPA is similar under MMF and EC-MPS. However, the incidence of GI disorders is significantly lower when patients are given EC-MPS.

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