Title : Beyond Single Nucleotide Polymorphisms: CYP3A5367 Composite and ABCB1 Haplotype Associations to Tacrolimus Pharmacokinetics in Black and White Renal Transplant Recipients.

Pub. Date : 2020

PMID : 32849848






9 Functional Relationships(s)
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1 Beyond Single Nucleotide Polymorphisms: CYP3A5*3*6*7 Composite and ABCB1 Haplotype Associations to Tacrolimus Pharmacokinetics in Black and White Renal Transplant Recipients. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
2 Interpatient variability in tacrolimus pharmacokinetics is attributed to metabolism by cytochrome P-450 3A5 (CYP3A5) isoenzymes and membrane transport by P-glycoprotein. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
3 Tacrolimus pharmacokinetics was investigated in 65 stable Black and Caucasian post-renal transplant patients by assessing the effects of multiple alleles in both CYP3A5 and ABCB1. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
4 Finally, a combined analysis using both CYP3A5 and ABCB1 polymorphisms was developed to assess their inter-related influence on tacrolimus pharmacokinetics. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
5 The ABCB1 haplotype analysis detected significant associations of the wildtype 1236T-2677T-3435T haplotype to tacrolimus dose (P = 0.03), CL (P = 0.023), CL/LBW (P = 0.022), and AUC* (P = 0.078). Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
6 Finally, analysis combining CYP3A5 and ABCB1 genotypes indicated that the presence of the ABCB1 3435 T allele significantly reduced tacrolimus clearance for all three CPY3A5 metabolic composite groups. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
7 Finally, analysis combining CYP3A5 and ABCB1 genotypes indicated that the presence of the ABCB1 3435 T allele significantly reduced tacrolimus clearance for all three CPY3A5 metabolic composite groups. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
8 Genotypic associations of tacrolimus pharmacokinetics can be improved by using the novel composite CYP3A5*3*4*5 and ABCB1 haplotypes. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens
9 Consideration of multiple alleles using CYP3A5 metabolic composites and drug transporter ABCB1 haplotypes provides a more comprehensive appraisal of genetic factors contributing to interpatient variability in tacrolimus pharmacokinetics among Whites and Blacks. Tacrolimus ATP binding cassette subfamily B member 1 Homo sapiens