Abstract
To report the outcomes, clinical management decisions and results of resistance testing among a group of children who developed virologic failure on first-line lopinavir/ritonavir (LPV/r)-based therapy from a large cohort of antiretroviral therapy-treated children in Soweto. Historical cohort study. Children with virologic failure were identified from a group of 1692 children <3 years who had initiated first-line LPV/r-containing therapy since 2000 up to the end November 2011. Genotyping was conducted in some children, and outcomes, management decisions and resistance results were described. A total of 152 children with virologic failure on first-line LPV/r-containing antiretroviral therapy were included. Resistance testing was performed in 75/152 (49%), and apart from a younger age (11.1 vs. 15.1 months, P = 0.04), the children with versus those without resistance testing were similar for baseline characteristics (weight, CD4, viral load and time to failure). Genotyping revealed that 8/75 (10.7%) had significant LPV/r-associated resistance mutations, including 2 with intermediate darunavir resistance. Among 63/75 (84%) children remaining on LPV/r-based therapy, 32/63 (51%) achieved virologic suppression, and 2 of these childre...Continue Reading
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