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- W2313997133 abstract "The presence of neutropenia after kidney transplantation represents a frequent adverse event (AE) that is usually treated with lowering of mycophenolic acid (MPA) dose. This leads to an increased incidence of acute rejection episodes and potential loss of renal allograft. This study evaluated the efficacy and safety of everolimus when used instead of MPA in patients who developed neutropenia (absolute neutrophil count < 2000/μL). We studied 17 patients, 12 men and 5 women, aged 40 ± 12 years old, who developed neutropenia after kidney transplantation. Five of them were patients with high immunological risk (high titer of cytotoxic antibodies, second or third transplant). All patients treated with MPA (1912 ± 196mg/day), calcineurin inhibitor (cyclosporine n=1, tacrolimus n=16) and methylprednisolone. Neutropenia occurred in 15 patients during the first 3 months after transplantation and in 2 patients between the 3rd and 6th month post-transplantation (59 ± 38 days). The 15 patients who developed neutropenia during the first 3 months after transplantation were still on valgancyclovir as prophylaxis against cytomegalovirus (CMV) infection. A total of 118 episodes of neutropenia were recorded, originally treated by reduction of MPA dose and administration of granulocyte colony-stimulating factor (G-CSF). Three patients experienced acute rejection (Banff 1A) 5 to 10 days after the reduction of MPA dose (0-1000mg/day) which was successfully treated with IV pulse of methylprednisolone. Five patients developed CMV infection, 108 ± 65 days after the onset of neutropenia and 5.5±1.5 months after transplantation. The replacement of MPA (765 ± 390mg/day) by everolimus was performed 1 to 23 months after transplantation and 5 days up to 48 months from the onset of neutropenia. After the induction of everolimus, 50 episodes of neutropenia were observed in 6 patients. In one of them discontinuation of everolimus was necessary 1.5 month later and in the rest 5 (who developed CMV infection and treated by valgancyclovir), neutropenia of less severity was observed up to the end of treatment for CMV infection. In the remaining 11 patients, no episode of neutropenia was observed. No episode of acute rejection occurred and the renal function remained stable 6 months after initiation of everolimus and during the whole follow up period of 47±30months [eGFRMDRD6: 45±14ml/min/1.73m2 → (6months):51±16ml/min/1.73m2 → (47±30months): 47±22ml/min/1.73m2]. Conclusion: The replacement of MPA by everolimus because of neutropenia in renal transplant recipients on triple immunosuppressive regimen appears to be safe and effective alternative treatment. Although neutropenia also occurred after administration of everolimus, it was less serious and possibly due to a different mechanism of action. Further research with more prospective randomized studies is necessary in order to confirm these findings." @default.
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- W2313997133 date "2012-11-01" @default.
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- W2313997133 title "Replacement of Mycophenolic Acid by Everolimus in Patients Who Become Neutropenic after Renal Transplantation" @default.
- W2313997133 doi "https://doi.org/10.1097/00007890-201211271-01706" @default.
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