ArticleThe Pediatric infectious disease journal2024
Pharmacokinetics of Generic Pediatric Dolutegravir Dispersible Tablet in Thai Young Children Living With HIV Weighing Below Twenty Kilograms.
Article in The Pediatric infectious disease journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionDolutegravir (DTG) dispersible tablet (DTG-DT) is a pediatric-friendly formulation. We aimed to describe the pharmacokinetics and virologic responses of generic DTG-DT in children weighing <20 kg.
methodsChildren living with HIV-1 and <7 years of age weighing 6 to <20 kg were eligible. A generic 10-mg scored DTG-DT was administered to children using 3 weight bands (WB): WB1 (6 to <10 kg), WB2 (10 to <14 kg) and WB3 (14 to <20 kg), at doses of 20 mg (higher than World Health Organization recommendation of 15 mg), 20 mg and 25 mg, respectively. Steady-state intensive pharmacokinetics (PK) was performed in fasting condition with blood sampling at predose and 1, 2, 3, 4, 6 and 24 hours postdose. DTG PK parameters were estimated using a noncompartmental analysis, and DTG trough concentrations (C 24 ) and 24-hour area under the concentration-time curve were calculated. Comparisons were made with ODYSSEY and IMPAACT 2019. And 90% effective concentration of 0.32 mg/L was used as a reference individual DTG C 24 concentration.
resultsFrom August 2021 to March 2023, 29 Thai children with a median (interquartile range) age of 3.2 (1.5-4.8) years were enrolled; 8 in WB1, 9 in WB2 and 12 in WB3. All children were treatment experienced and 59% had HIV RNA <200 copies/mL. Overall geometric mean (coefficient of variation percentage) DTG C 24 was 1.0 (46%) mg/L [WB1, 0.9 (53%); WB2, 0.9 (27%); WB3, 1.2 (51%)]. Geometric mean (coefficient of variation percentage) 24-hour area under the concentration-time curve was 83.2 (24%) mg h/L [WB1, 84.3 (31%); WB2, 76.9 (16%); WB3, 87.6 (25%)]. At weeks 24 and 48, 90% and 92% of participants had plasma HIV RNA <200 copies/mL.
conclusionsGeneric DTG-DT provided adequate drug exposure in children weighing 6 to <20 kg. The exploratory dose of DTG 20 mg for children weighing 6 to <10 kg showed similar PK parameters to World Health Organization doses in the other WB.
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