Why We Need to Take a Closer Look at Genetic Contributions to CYP3A Activity

Author:

Zhai Qinglian,van der Lee Maaike,van Gelder Teun,Swen Jesse J.

Abstract

Cytochrome P450 3A (CYP3A) subfamily enzymes are involved in the metabolism of 40% of drugs in clinical use. Twin studies have indicated that 66% of the variability in CYP3A4 activity is hereditary. Yet, the complexity of the CYP3A locus and the lack of distinct drug metabolizer phenotypes has limited the identification and clinical application of CYP3A genetic variants compared to other Cytochrome P450 enzymes. In recent years evidence has emerged indicating that a substantial part of the missing heritability is caused by low frequency genetic variation. In this review, we outline the current pharmacogenomics knowledge of CYP3A activity and discuss potential future directions to improve our genetic knowledge and ability to explain CYP3A variability.

Publisher

Frontiers Media SA

Subject

Pharmacology (medical),Pharmacology

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