Abstract:
:Cytochrome P450 3A4 (CYP3A4) is quantitatively the most important P450 enzyme in adults. It is suggested that CYP3A4 genetic polymorphisms may influence the rate of the metabolism and elimination of CYP3A4 substrates in human beings. Ibrutinib is an anticancer drug and primarily metabolized by CYP3A4. The aim of this study was to systematically investigate the effects of 22 CYP3A4 protein variants on the metabolism of ibrutinib in vitro. When compared with wild-type CYP3A4.1, two variants (CYP3A4.17 and CYP3A4.24) had no detectable enzyme activity; five variants (CYP3A4.10, .11, .18, .23 and .33) exhibited no significant differences; another five variants (CYP3A4.3, .4, .9, .19 and .34) showed increased intrinsic clearance values, while the remaining nine variants (CYP3A4.2, .5, .14, .15, .16, .28, .29, .31 and .32) displayed decreased enzymatic activities in different degrees. As the first study of 22 CYP3A4 protein variants in ibrutinib metabolism, these comprehensive data may help in the clinical assessment of the metabolism and elimination of ibrutinib and also offer a reference to the personalized treatment of ibrutinib in clinic.
journal_name
Basic Clin Pharmacol Toxicoljournal_title
Basic & clinical pharmacology & toxicologyauthors
Xu RA,Wen J,Tang P,Wang C,Xie S,Zhang BW,Zhou Q,Cai JP,Hu GXdoi
10.1111/bcpt.12934subject
Has Abstractpub_date
2018-04-01 00:00:00pages
383-387issue
4eissn
1742-7835issn
1742-7843journal_volume
122pub_type
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