Journal
DRUG METABOLISM REVIEWS
Volume 47, Issue 2, Pages 111-123Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/03602532.2014.982864
Keywords
Drug metabolism; hepatotoxicity; HIV/AIDS; inter-ethnic variability; neurotoxicity
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Funding
- University of Pretoria Institute for Cellular and Molecular Medicine
- South African Medical Research Council
- National Research Foundation of South Africa
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The CYP450 and UGT enzymes are involved in phase I and phase II metabolism of the majority of clinically prescribed drugs, including the non-nucleoside reverse transcriptase inhibitors, efavirenz and nevirapine, used in the treatment of HIV/AIDS. Variations in the activity of these enzymes due to gene polymorphisms can affect an individual's drug response or may lead to adverse drug reactions. There is an inter-ethnic distribution in the frequency of these polymorphisms, with African populations exhibiting higher genetic diversity compared to other populations. African specific alleles with clinical relevance have also emerged. Given the high prevalence of HIV/AIDS in sub-Saharan Africa, understanding the frequency of pharmacogenetically relevant alleles in populations of African origin, and their impact on efavirenz and nevirapine metabolism, is becoming increasingly critical. This review aims to investigate ethnic variation of CYP2B6, CYP2A6 and UGT2B7, and to understand the pharmacogenetic relevance when comparing frequencies in African populations to other populations worldwide.
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