alexa Genetic variability of CYP2B6 polymorphisms in southeast Iranian population: implications for malaria and HIV AIDS treatment.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Pharmacogenomics & Pharmacoproteomics

Author(s): Zakeri S, Amiri N, Pirahmadi S, Dinparast Djadid N

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Abstract BACKGROUND: Genetic polymorphisms in the cytochrome P450 2B6 (CYP2B6) gene could influence therapeutic outcomes of CYP2B6-metabolized drugs such as artemisinin, nevirapine (NVP), and efavirenz (EFV). The main objective of the present study was to analyze the frequency of the most common allele of CYP2B6*1 to *7 and *9 in Iranian Baluchi population and also to compare the frequencies of these polymorphisms with those reported in different ethnic groups. METHODS: A total of 206 healthy, unrelated, subjects were participated in this study. CYP2B6*1, *2, *3, *4, *5, *6,*7, and *9 polymorphisms were investigated, using PCR-RFLP followed by sequencing analysis. RESULTS: High frequency of 516T (35.7\%) was found among the studied subjects. Also, the three most frequent genotypes were CYP2B6*1/*6 (28.1\%), CYP2B6*1/*1 (16\%) and CYP2B6*1/*9 (14.6\%). The frequency of CYP2B6*6/*6 (4.8\%) was not different from Caucasian, Japanese and Chinese populations, but it was lower than West African (17\%) and Papua New Guinean (43\%) populations. CONCLUSION: Allele frequencies for CYP2B6 in the examined population were markedly different from those African, Caucasian, and Southeast Asian populations. CYP2B6*2, *4, *5, *6, and *7 were found in the Iranian Baluchi that may affect the response to artemisin and its derivatives. High frequency of G516T (35.7\%) was detected among the examined subjects that might cause greater efavirenz plasma exposure and more central nervous system side effects. Therefore, characterization of pharmacologically relevant polymorphisms in CYP2B6 has a great potential to improve drug efficacy and reduce toxicity. This article was published in Arch Iran Med and referenced in Journal of Pharmacogenomics & Pharmacoproteomics

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