Abstract:
:Previously, we demonstrated that the dose-normalized tacrolimus blood concentration after renal transplantation was associated with a single nucleotide polymorphism (SNP) in the CYP3AP1 gene, probably through linkage with an SNP in the CYP3A5 gene. Individuals with at least one CYP3A5*1 allele synthesize CYP3A5 and CYP3A5*3/*3 homozygotes do not. We now present results with direct typing of the CYP3A5 genotype for this group of 180 kidney-only transplant recipients from a single center. South Asian and white patients with at least one CYP3A5*1 allele achieved twofold lower dose-normalized tacrolimus blood concentrations compared with CYP3A5*3/*3 homozygotes, confirming our previous findings for the CYP3AP1 SNP. There was a significant delay in achieving target blood concentrations in those with at least one CYP3A5*1 allele. Determination of the CYP3A5*1/*3 genotype could be used to predict the tacrolimus dose requirement and, given incomplete linkage, would be better than determination of the CYP3AP1 genotype.
journal_name
Transplantationjournal_title
Transplantationauthors
Macphee IA,Fredericks S,Mohamed M,Moreton M,Carter ND,Johnston A,Goldberg L,Holt DWdoi
10.1097/01.tp.0000151766.73249.12subject
Has Abstractpub_date
2005-02-27 00:00:00pages
499-502issue
4eissn
0041-1337issn
1534-6080pii
00007890-200502270-00019journal_volume
79pub_type
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