Abstract

Background: Although modern immunosuppressants improve survival post-transplant, they are associated with long-term metabolic complications, such as post-transplant diabetes mellitus (PTDM). Calcineurin inhibitor-sparing regimens using everolimus attenuate some complications such as left ventricular hypertrophy. However, the metabolic effects of everolimus following transplant are less clear. Aims: To compare incidence of diabetes in heart transplant recipients exposed to low-dose everolimus and tacrolimus versus standard-dose tacrolimus. Methods: Post-hoc analysis in participants of a randomised open-label clinical trial of low-dose everolimus and tacrolimus versus standard-dose tacrolimus in heart transplant recipients. Results: There were 39 participants in the trial, mean follow up was 6.4 ± 1.5 years. There was a high rate of pre-existing diabetes (26%) and newly-diagnosed PTDM (36%) during follow-up (Figure 1). Half the patients who developed PTDM in the everolimus-tacrolimus group (n=4/8) ceased diabetes medications during follow-up, which was not observed in patients on standard tacrolimus (n=0/6). Conclusion: This study suggests that treatment with everolimus may improve PTDM outcomes relative to treatment with standard doses of calcineurin inhibitor. These findings should be further studied in prospective randomised trials. Disclosure L.M.Raven: None. C.A.Muir: None. J.Pouliopoulos: None. P.S.Macdonald: Advisory Panel; AstraZeneca, Boehringer Ingelheim Inc., Other Relationship; Novartis. A.Jabbour: None. J.Greenfield: None.

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