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Individualized immunosuppression in transplant patients: potential role of pharmacogenetics

Authors Abboudi H, MacPhee I

Received 28 January 2012

Accepted for publication 27 March 2012

Published 18 June 2012 Volume 2012:5 Pages 63—72

DOI https://doi.org/10.2147/PGPM.S21743

Review by Single-blind

Peer reviewer comments 3


Hamid Abboudi, Iain AM MacPhee

Division of Clinical Sciences, Renal Medicine, St George's, University of London, London, UK

Abstract: The immunosuppressive drugs used to prevent the rejection of transplanted organs have a narrow therapeutic index. Under treatment results in episodes of rejection leading to either damage or loss of the organ. Over immunosuppression increases the risk of infection and malignancy as well as drug specific complications including diabetes mellitus and nephrotoxicity. There is wide variation in the drug dose required to achieve target blood concentrations and there is often dissociation between pharmacokinetics and pharmacodynamics. Currently, immunosuppressive drug treatment is individualized based on a clinical assessment of the risk of rejection or toxicity. Therapeutic drug monitoring is routinely employed for several immunosuppressive drugs. Pharmacogenetics has the potential to complement therapeutic drug monitoring but clinical benefit has yet to be demonstrated. Novel biomarker-based approaches to risk stratification and pharmacodynamic monitoring are under development and are ready for clinical trials.

Keywords: CYP3A5, immunosuppression, pharmacogenetics, transplantation

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