Plasma levels of atazanavir and the risk of hyperbilirubinemia are predicted by the 3435C-->T polymorphism at the multidrug resistance gene 1.

Rodríguez Nóvoa, Sonia; Barreiro, Pablo; Rendón, Ana; Barrios, Ana; Corral, Angélica; Jiménez-Nacher, Inmaculada; González-Lahoz, Juan; Soriano, Vincent · Clin Infect Dis · 2006

case_control · Level III

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Abstract

The 3435C-->T polymorphism at the multidrug resistance gene 1 (MDR1) was examined in 74 patients with human immunodeficiency virus who initiated atazanavir therapy. The MDR1 genotype distribution at position 3435 was 28% CC, 45% CT, and 27% TT. Plasma levels of atazanavir were significantly higher in patients with genotype CC than in those with CT or TT, and bilirubin levels correlated with atazanavir concentrations.

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