Dataset Information

Exploration of CYP450 and drug transporter genotypes and correlations with nevirapine exposure in Malawians.

ABSTRACT:

Aim

Genetic polymorphisms have the potential to influence drug metabolism and vary among ethnic groups. This study evaluated the correlation of genetic polymorphisms with nevirapine pharmacokinetics exposure in Malawians.

Materials & methods

CYP450 2B6, 2D6, 3A4 and 3A5, ABCB1 and constitutive androstane receptor and pregnane X receptor, were analyzed for polymorphisms in 26 subjects.

Results

Allele frequencies (variant) were: CYP2B6 514G>T (0.31) CYP2D6*4 (0.02); CYP2D6*17 (0.35); CYP3A4*1B (0.77); CYP3A5*3 (0.25); ABCB1 2677G>T (0.0), ABCB1 3435C>T (0.21), NR1I3 13711152T>C (0.02), NR1I2 44477T>C (0.10), NR1I2 63396C>T (0.33), NR1I2 6-bp indel (del: 0.17). CYP2B6 516G>T (non-wild-type/wild-type) correlated with nevirapine pharmacokinetic parameters; geometric mean ratios (95% CI): 1.75 (1.27-2.40) for area under the concentration time curve (AUC)(0-12 h), 1.58 (1.03-2.42) for C(0), and 0.53 (0.31-0.91) for clearance. In a multivariable model, nevirapine AUC increased by 1.5% per year of age (p < 0.0001), CYP2B6 516 T allele increased AUC by 92% (p < 0.0001), and CYP3A5*3 decreased AUC by 31% (p = 0.0027).

Conclusion

Allele frequencies were similar to other sub-Saharan African populations. The T allele for CYP2B6 516 was significantly associated with nevirapine exposure.

SUBMITTER: Brown KC

PROVIDER: S-EPMC3292264 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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Publications

Exploration of CYP450 and drug transporter genotypes and correlations with nevirapine exposure in Malawians.

Brown Kevin C KC Hosseinipour Mina C MC Hoskins Janelle M JM Thirumaran Ranjit K RK Tien Hsiao-Chuan HC Weigel Ralf R Tauzie Jean J Shumba Ida I Lamba Jatinder K JK Schuetz Erin G EG McLeod Howard L HL Kashuba Angela D M AD Corbett Amanda H AH

Pharmacogenomics 20111123 1

<h4>Aim</h4>Genetic polymorphisms have the potential to influence drug metabolism and vary among ethnic groups. This study evaluated the correlation of genetic polymorphisms with nevirapine pharmacokinetics exposure in Malawians.<h4>Materials & methods</h4>CYP450 2B6, 2D6, 3A4 and 3A5, ABCB1 and constitutive androstane receptor and pregnane X receptor, were analyzed for polymorphisms in 26 subjects.<h4>Results</h4>Allele frequencies (variant) were: CYP2B6 514G>T (0.31) CYP2D6*4 (0.02); CYP2D6*17 ...[more]

PMID: 22111602

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Dataset Information

Exploration of CYP450 and drug transporter genotypes and correlations with nevirapine exposure in Malawians.

Aim

Materials & methods

Results

Conclusion

Publications

Exploration of CYP450 and drug transporter genotypes and correlations with nevirapine exposure in Malawians.

Similar Datasets

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