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CYP2B6 genotype-bas...
CYP2B6 genotype-based efavirenz dose recommendations during rifampicin-based antituberculosis cotreatment for a sub-Saharan Africa population
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Mukonzo, JK (author)
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Bisaso, RK (author)
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Ogwal-Okeng, J (author)
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- Gustafsson, LL (author)
- Karolinska Institutet
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Owen, JS (author)
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- Aklillu, E (author)
- Karolinska Institutet
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(creator_code:org_t)
- Future Medicine Ltd, 2016
- 2016
- English.
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In: Pharmacogenomics. - : Future Medicine Ltd. - 1744-8042 .- 1462-2416. ; 17:6, s. 603-613
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http://kipublication...
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https://doi.org/10.2...
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Abstract
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- Aim: To assess genotype effect on efavirenz (EFV) pharmacokinetics, treatment outcomes and provide genotype-based EFV doses recommendations during for tuberculosis (TB)-HIV-1 cotreatment. Materials & methods: EFV concentrations from 158 HIV-TB co-infected patients treated with EFV/lamivudine/zidovidine and rifampicin were analyzed. Genotype and CD4 and viral load data were analyzed using a population PK model. Results: Simulated AUCs for 600 mg EFV dose were 1.2- and 2.4-times greater than the product label for Ugandans in general and CYP2B6*6/*6 genotypes respectively. EFV daily doses of 450 and 250 mg for Ugandans and CYP2B6*6/*6 genotypes, respectively, yielded simulated exposures comparable to the product label. Conclusions: Around 450 and 250 mg daily doses might meet EFV dosing needs of HIV-TB infected Ugandans in general and CYP2B6*6/*6 genotypes, respectively.
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