2003 Volume 18 Issue 4 Pages 267-268
We sequenced all 13 exons of the CYP3A4 gene derived from 48 Japanese subjects. One subject possess the 20070 T>C mutation in the exon 10 (result in leu293Pro substitution, namely CYP3A4*18), as heterozygote. Thus, we investigated the frequency of CYP3A4*18 in 118 Japanese population using polymerase chain reaction-restriction fragment length polymorphism with Msp I and determined that the frequency of the CYP3A4*18 allele was 1.3%.
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