Retention of indoxyl sulfate in different genotypes of ABCC2 may explain variation in tacrolimus pharmacokinetics
2024

How Different Genotypes Affect Tacrolimus Levels in Liver Transplant Patients

Sample size: 124 publication Evidence: moderate

Author Information

Author(s): Wang Jing, Huang Siqi, Li Yuanchen, Fang Qiu, Wang Min, Zhu Huaijun

Primary Institution: Nanjing Drum Tower Hospital

Hypothesis

The study aims to assess the retention of indoxyl sulfate and hippuric acid in the plasma of liver transplantation subjects carrying different genotypes of ABCB1 and ABCC2.

Conclusion

ABCC2 may be one of the pathways by which tacrolimus pharmacokinetics is altered by indoxyl sulfate.

Supporting Evidence

  • Carriers of the rs717620-24T variant exhibited high plasma indoxyl sulfate retention in patients with normal renal function.
  • Chronic kidney disease patients and patients with normal renal function exhibited indoxyl sulfate and tacrolimus in the ABCC2 normal function and reduced function groups.
  • The study found a strong correlation between plasma indoxyl sulfate level and tacrolimus dose-corrected trough concentration.

Takeaway

This study looked at how different genes in liver transplant patients affect the levels of certain toxins and a medication called tacrolimus.

Methodology

The study included liver transplant patients treated with tacrolimus and analyzed their plasma concentrations of indoxyl sulfate and hippuric acid based on their genotypes.

Potential Biases

The study was conducted at a single center, which may limit the generalizability of the findings.

Limitations

The study only determined the genotypes of liver transplant recipients and lacked information on the genotypes of donors.

Participant Demographics

Most participants were Han Chinese from Jiangsu and Anhui provinces, with a median age of 55 years and 62.9% being men.

Statistical Information

P-Value

0.020

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.7717/peerj.18729

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