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  • Title: The Cost of Gastrointestinal Adverse Events and the Impact of Dose-Reductions/Discontinuations on Acute Rejection in Kidney Transplant Patients of Mycophenolate Mofetil-Related Compared to Enteric-Coated Mycophenolate Sodium: A Pharmacoeconomic Study.
    Author: Martinez-Mier G, Salazar-Ramirez A.
    Journal: Transplant Proc; 2016 Mar; 48(2):588-95. PubMed ID: 27110009.
    Abstract:
    BACKGROUND: Mycophenolate mofetil (MMF) is effective in decreasing rejection and graft loss in renal transplant patients. Enteric-coated mycophenolate sodium (EC-MPS) was designed to reduce MMF gastrointestinal (GI) effects. Dose manipulations in MMF/EC-MPS produce GI tolerability, increasing the risk of rejection. Significant differences in tolerance of MMF/EC-MPS may have economic influence in transplant efficacy outcomes. Herein, we performed a pharmacoeconomic evaluation of acute rejection incidence and interventions in GI-intolerant patients using MMF/EC-MPS. METHODS: A cost-effectiveness analysis was performed through a decision tree model with a 1-year time horizon estimating costs and effectiveness of MMF and EC-MPS in renal transplant patients with GI intolerance. The costs and use of resources (US dollars; USD) were from payer perspective (Mexican Social Security). Primary health outcomes were mean cost of acute rejection and GI adverse events treatment. A probabilistic sensitivity analysis (PSA) was generated to test robustness of the model. RESULTS: Calculated incidence of MMF GI intolerance was 44%, and calculated rejection incidence for MMF was 24.05%. Calculated incidence of EC-MPS GI intolerance was 29%, and calculated rejection incidence for EC-MPS was 20.1% Total cost of MMF with GI intolerance during 1-year period plus cost of treating one rejection sums $752,107.25 USD. Total cost of EC-MPS with GI intolerance plus cost of treating one rejection sums $638,018.97 USD. CONCLUSION: EC-MPS-based treatment is a cost-saving alternative vs MMF in GI-intolerant kidney transplant patients. PSA supports the decision to utilize EC-MPS based on cost-effectiveness analysis.
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