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Abstract
Objective: The management of liver receivers requires intense immunosuppression to prevent graft rejection. Mycophenolate mofetil (MMF) is a common immunosuppressant but frequently suffer dose reduction for gastrointestinal adverse reactions (GI). Hence, the enteric-coated mycophenolate sodium (EC-MPS) is introduced as a substitute for MMF to reduce GI. The study was designed to investigate the efficacy, safety and exposure equation of EC-MPS in liver transplant patients in China.
Methods: Ninety-two liver receivers who administered EC-MPS or MMF as a primary immunosuppressant were enrolled in this single-center study and divided into MMF group and EC-MPC group, respectively. Efficacy and safety of EC-MPS were compared with MMF. The MPA exposure was measured at time 0, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12 h after mean 4.5 days of EC-MPS treatment. An equation of limited time points for estimating serum MPA exposure of EC-MPS was established using multiple stepwise regression model.
Results: Data show an interpatient variation in MPA AUC, Cmax and Tmax. After a first dose of EC-MPS, the mean value of serum AUC0-12 h was 20.68 mg/L (SD 8.94, range 8.1–46.3). Cmax was 9.7 mg/L (SD 6.48, range 2.7–16.3); Tmax was 1.90 h (SD 0.97, range 0.5–4). The best equation for estimating the AUC was 6.0 1 4 + 0.946C2 + 0.606C3 + 1.154C4 + 2.479C6 + 5.07C12. Comparing with MMF, EC-MPS not only effectively maintained immunosuppression, but also had similar incidences of infection, renal dysfunction and hematological disorders. However, EC-MPS markedly improved GI, the incidence of GI was half of the MMF group.
Conclusion: This analysis presented that EC-MPS is an effective and safe immunosuppressant as similar as MMF. The conversion of MMF to EC-MPS could be administered.