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    In: JAIDS Journal of Acquired Immune Deficiency Syndromes, Ovid Technologies (Wolters Kluwer Health), Vol. 75, No. 5 ( 2017-08-15), p. 554-560
    Abstract: Nevirapine (NVP) is a key component of antiretroviral prophylaxis and treatment for neonates. We evaluated current World Health Organization (WHO) weight-band NVP prophylactic dosing recommendations and investigated optimal therapeutic NVP dosing for neonates. Methods: The PHPT-5 study in Thailand assessed the efficacy of “Perinatal Antiretroviral Intensification” to prevent mother-to-child transmission of HIV in women with 〈 8 weeks of antiretroviral treatment before delivery (NCT01511237). Infants received a 2-week course of zidovudine/lamivudine/NVP (NVP syrup/once daily: 2 mg/kg for 7 days; then 4 mg/kg for 7 days). Infant samples were assessed during the first 2 weeks of life. NVP population pharmacokinetics (PK) parameters were estimated using nonlinear mixed-effects models. Simulations were performed to estimate the probability of achieving target NVP trough concentrations for prophylaxis ( 〉 0.10 mg/L) and for therapeutic efficacy ( 〉 3.0 mg/L) using different infant dosing strategies. Results: Sixty infants (55% male) were included. At birth, median (range) weight was 2.9 (2.3–3.6) kg. NVP concentrations were best described by a 1-compartment PK model. Infant weight and postnatal age influenced NVP PK parameters. Based on simulations for a 3-kg infant, ≥92% would have an NVP trough 〉 0.1 mg/L after 48 hours through 2 weeks using the PHPT-5 and WHO-dosing regimens. For NVP-based therapy, a 6-mg/kg twice daily dose produced a trough 〉 3.0 mg/L in 87% of infants at 48 hours and 80% at 2 weeks. Conclusion: WHO weight-band prophylactic guidelines achieved target concentrations. Starting NVP 6 mg/kg twice daily from birth is expected to achieve therapeutic concentrations during the first 2 weeks of life.
    Type of Medium: Online Resource
    ISSN: 1525-4135
    RVK:
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 2038673-4
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