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Polymorphisms in immunoregulatory genes: towards individualized immunosuppressive therapy?
Ann K Daly1, Christopher P Day, Peter T Donaldson
1Centre for Liver Research, University of Newcastle upon Tyne, Framlington Place, Newcastle upon Tyne NE2 4HH, UK. A.K.Daly@ncl.ac.uk
American Journal of Pharmacogenomics : Genomics-Related Research in Drug Development and Clinical Practice
|June 27, 2002
Summary
Predicting immunosuppressive drug doses in organ transplant patients remains challenging. Genetic analysis of immune response genes shows promise, but larger studies are needed to link specific gene variations to transplant outcomes.
Area of Science:
- Immunogenetics
- Transplantation Medicine
- Pharmacogenomics
Background:
- Successful organ transplantation hinges on balancing immunosuppression to prevent rejection and infection.
- Individual immunosuppressive drug dose requirements are currently unpredictable.
- Genetic variations in immune response genes are being investigated to personalize transplant management.
Purpose of the Study:
- To review current research on gene polymorphisms and their association with transplant rejection and infection.
- To identify potential genetic markers for optimizing immunosuppressive therapy.
Main Methods:
- Analysis of polymorphisms in cytokine genes (TNF-α, TGF-β, IFN-γ, IL-1, IL-4, IL-6, IL-10) and the IL-4 receptor.
- Evaluation of studies on immunomodulatory genes like CTLA4 and CCR-5.
Main Results:
- No consistent associations found between polymorphisms in major cytokine genes and graft rejection.
- Preliminary data suggest potential links between CTLA4 and CCR-5 gene polymorphisms and transplant outcomes.
- Current genetic markers do not reliably predict individual immunosuppressive drug needs.
Conclusions:
- Larger studies are required to validate associations between cytokine and other immunoregulatory gene polymorphisms and transplant outcomes.
- Further research into functional significance of gene polymorphisms is crucial for advancing personalized immunosuppression.