The purpose is to evaluate the efficacy of maternal and infant perinatal antiretroviral prophylaxis intensification for the prevention of mother-to-child intrapartum transmission of HIV-1 in women receiving less than 8 weeks of antiretroviral prophylaxis during pregnancy.
Design: a multicenter, phase III, single-arm trial. Perinatal antiretroviral intensification (study treatment) is defined as the addition to the standard of care\* for mothers and infants of: * Mothers: One NVP 200 mg tablet at onset of labor with continuation of HAART for four weeks postpartum * Newborn: AZT+3TC+ NVP for 2 weeks, followed by AZT+3TC for 2 weeks: * NVP syrup 2 mg/kg every 24 hours for seven days, followed by NVP syrup 4 mg/kg every 24 hours for seven days. Newborns less than 2500 g will be administered 2mg/kg NVP syrup at each intake * AZT syrup 4 mg/ kg will be given every 12 hours for four weeks (preterm infants less than 30 weeks will be administered 2 mg/kg every 12 hours; preterm 30-35 weeks will receive 2 mg/kg every 12 hours for the first 2 weeks, increased to 3 mg/kg for the next 2 weeks). * 3TC syrup 2 mg/kg every 12 hours for four weeks. * The standard of care in Thailand is defined as: * Maternal antiretroviral treatment: ZDV 300 mg, 3TC 150mg and LPV/r 400/100 twice a day starting as soon possible after 14 weeks of pregnancy + ZDV 300 mg every 3 hours during labor; this treatment may be continued, stopped or modified after delivery upon the recommendation of the internist. * Newborn: ZDV 4 mg/kg every 12 hours for 4 weeks (ZDV dosing adjusted for premature infants).
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
PREVENTION
Masking
NONE
Enrollment
379
* Mothers: One NVP 200 mg tablet at onset of labor with continuation of HAART for four weeks postpartum * Newborn: AZT+3TC+ NVP for 2 weeks, followed by AZT+3TC for 2 weeks: * NVP syrup 2 mg/kg every 24 hours for seven days, followed by NVP syrup 4 mg/kg every 24 hours for seven days. Newborns less than 2500 g will be administered 2mg/kg NVP syrup at each intake * AZT syrup 4 mg/ kg will be given every 12 hours for four weeks (preterm infants less than 30 weeks will be administered 2 mg/kg every 12 hours; preterm 30-35 weeks will receive 2 mg/kg every 12 hours for the first 2 weeks, increased to 3 mg/kg for the next 2 weeks). * 3TC syrup 2 mg/kg every 12 hours for four weeks.
Rate of perinatal HIV transmission
HIV DNA PCR analysis at birth, 2 weeks, 1, 2, 4 and 6 months of age
Time frame: 6 months
Safety for women and neonates
All grade 3 and 4 clinical adverse events and abnormal laboratory values in women will be recorded and graded according to the toxicity tables developed by the DAIDS
Time frame: Up to 12 Months
Pregnancy outcomes
Evaluation of the rates of live births and stillbirths, as well as birth weight, gestational age at delivery according to the results of the sonogram at first prenatal visit, newborn maturity (Ballard score).
Time frame: Up to 12 Months
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