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Updated: Dec 23, 2025
08:38
Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS
Published on: November 8, 2015
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Pharmacogenetics and tacrolimus administration in stem cell transplantation
Jai N Patel1, Issam S Hamadeh1
1Department of Cancer Pharmacology, Levine Cancer Institute, Atrium Health, Charlotte, NC 28204, USA.
Pharmacogenomics
|April 21, 2020
Summary
Tacrolimus pharmacogenetics significantly impacts transplant outcomes. Novel gene insights, beyond CYP3A5, are crucial for optimizing tacrolimus therapy, especially with intravenous dosing.
Area of Science:
- Pharmacogenomics
- Transplantation Medicine
- Drug Metabolism
Background:
- Tacrolimus is a vital immunosuppressant for preventing graft rejection in transplantation.
- High inter-individual variability in tacrolimus response necessitates therapeutic drug monitoring.
- Pharmacogenetics is known to influence drug exposure and clinical outcomes.
Purpose of the Study:
- To review recent evidence on the influence of pharmacogenetics on tacrolimus therapy.
- To explore the role of various genes, including CYP3A4 and ABCB1, in tacrolimus pharmacokinetics.
- To highlight the impact of different dosing routes (oral vs. intravenous) on genetic influences.
Main Methods:
- Literature review of recent studies on tacrolimus pharmacogenetics.
- Analysis of genetic variations (genotypes) and their correlation with drug concentrations and patient outcomes.
- Comparison of genetic influences in solid organ transplantation versus stem cell transplantation.
Main Results:
- CYP3A5 genotype significantly affects oral tacrolimus levels and outcomes in solid organ transplantation.
- Emerging evidence suggests CYP3A4 and ABCB1 genotypes are more critical for intravenous tacrolimus dosing.
- The impact of novel genes on tacrolimus efficacy and toxicity is increasingly recognized.
Conclusions:
- Pharmacogenetic profiling can optimize tacrolimus dosing strategies.
- Understanding genetic variations is essential for personalized immunosuppression in transplant recipients.
- Further research into novel genetic factors is needed to refine tacrolimus therapy.
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