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Phase 3 Completed N=643 Randomized Treatment

Evaluating the Efficacy and Safety of Dolutegravir-Containing Versus Efavirenz-Containing Antiretroviral Therapy Regimens in HIV-1-Infected Pregnant Women and Their Infants

Source: ClinicalTrials.gov NCT03048422 ↗
Enrolled (actual)
643
Serious AEs
17.9%
Results posted
Nov 2021
Primary outcomePrimary: Percentage of Mothers With HIV-1 RNA Viral Load Less Than 200 Copies/mL at Delivery — 97.5; 91.0; 97.5; 91.4 Percentage of participants — p=0.005
◆ Published Evidence
Highly cited
158citations · ~32 / year
Efficacy and safety of dolutegravir with emtricitabine and tenofovir alafenamide fumarate or tenofovir disoproxil fumarate, and efavirenz, emtricitabine, and tenofovir disoproxil fumarate HIV antiretroviral therapy regimens started in pregnancy (IMPAACT 2010/VESTED): a multicentre, open-label, randomised, controlled, phase 3 trial.
Lancet (London, England) · 2021 · Open access · High-confidence link

Summary

The purpose of this study was to compare the virologic efficacy and safety of three antiretroviral (ARV) regimens, dolutegravir plus emtricitabine/tenofovir alafenamide, dolutegravir plus emtricitabine/tenofovir disoproxil fumarate, and efavirenz/emtricitabine/tenofovir disoproxil fumarate in pregnant women living with HIV-1 and to compare the safety of these regimens for their infants.

Linked Publications (5)

  • Efficacy and safety of dolutegravir with emtricitabine and tenofovir alafenamide fumarate or tenofovir disoproxil fumarate, and efavirenz, emtricitabine, and tenofovir disoproxil fumarate HIV antiretroviral therapy regimens started in pregnancy (IMPAACT 2010/VESTED): a multicentre, open-label, randomised, controlled, phase 3 trial.
    Lancet (London, England) · 2021 · 158 citations · Open access · High-confidence link
  • Efficacy and safety of three antiretroviral therapy regimens started in pregnancy up to 50 weeks post partum: a multicentre, open-label, randomised, controlled, phase 3 trial.
    The lancet. HIV · 2023 · 27 citations · Open access · Likely link
  • Markers of Maternal Bone and Renal Toxicity Through 50 Weeks Postpartum: IMPAACT 2010 (VESTED) Trial.
    Journal of acquired immune deficiency syndromes (1999) · 2024 · 2 citations · Open access · Likely link
  • Lipid and Glucose Profiles in Pregnant Women With HIV on Tenofovir-based Antiretroviral Therapy.
    Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2025 · 2 citations · Open access · Likely link
  • Dolutegravir- Versus Efavirenz-Based Treatment in Pregnancy: Impact on Red Blood Cell Folate Concentrations in Pregnant Women and Their Infants.
    The Journal of infectious diseases · 2024 · 1 citation · Open access · Likely link

Outcome Measures

OutcomeResultp-value
PRIMARY
Percentage of Mothers With HIV-1 RNA Viral Load Less Than 200 Copies/mL at Delivery
97.5; 91.0; 97.5; 91.4 0.005 sig
PRIMARY
Percentage of Mother-infant Pairs With an Adverse Pregnancy Outcome
28.4; 32.7 0.27
PRIMARY
Cumulative Probability of Women Experiencing Grade 3 or Higher Adverse Event
27.9; 27.9 0.49
PRIMARY
Cumulative Probability of Infants Experiencing Grade 3 or Higher Adverse Event
26.8; 30.9 0.15
SECONDARY
Percentage of Mothers With HIV-1 RNA Less Than 50 Copies/mL at Delivery Measured at Central Laboratory
94.4; 78.8 < 0.0001 sig
SECONDARY
Percentage of Mothers With HIV-1 RNA Less Than 200 Copies/mL at 50 Weeks Postpartum
96.3; 96.4 0.97
SECONDARY
Time to First HIV-1 RNA Less Than 200 Copies/mL Through Delivery
4.26; 6.49 < 0.001 sig
SECONDARY
Percentage of Mothers With Virologic Success of HIV-1 RNA Less Than 200 Copies/mL at Delivery Based on FDA Snapshot Algorithm
88.9; 92.6; 81.0 0.19
SECONDARY
Percentage of Mothers With Virologic Success of HIV-1 RNA Less Than 200 Copies/mL at 50 Weeks Postpartum Based on FDA Snapshot Algorithm
75.6; 77.7; 76.3 0.61
SECONDARY
Percentage of Mother-Infant Pairs With an Adverse Pregnancy Outcome
28.4; 32.7 0.27
SECONDARY
Cumulative Probability of Women Experiencing Grade 3 or Higher Adverse Event
27.9; 27.9 0.49
SECONDARY
Cumulative Probability of Infants Experiencing Grade 3 or Higher Adverse Event
26.8; 30.9 0.15
SECONDARY
Percentage of Mother-infant Pairs With an Adverse Pregnancy Outcome or Major Congenital Anomaly
24.1; 32.9; 33.2 0.043 sig
SECONDARY
Count of Mother-infant Pairs in the Classified Ranked Composite Safety Outcome
2; 4; 14; 8; 11; 4 0.095
SECONDARY
Cumulative Probability of Infant HIV-infection
0.98; 0.50; 0.55 0.28
SECONDARY
Cumulative Probability of Infant Deaths
1.0; 2.0; 6.9 0.20
SECONDARY
Maternal Change in Creatinine Clearance
-0.980; -0.887; -0.935 0.12
SECONDARY
Infant Creatinine Clearance
52.7; 53.1; 49.0; 134.8; 123.6; 135.0 0.94
SECONDARY
Percentage of Mothers With HIV-1 ARV Drug Resistance Mutations at the Time of Maternal Virologic Failure
0.92; 1.86; 6.16 0.40
SECONDARY
Count of Infants With HIV-1 Antiretroviral Drug Resistance Mutations at the Time of Infant HIV Diagnosis
1; 0; 1
SECONDARY
Percentage of Mother-Infant Pairs With Preterm Deliveries
5.8; 9.4; 12.1 0.16
SECONDARY
Percentage of Infants Born Small for Gestational Age
16.3; 22.5; 20.5 0.12
SECONDARY
Change in Maternal Weight Antepartum
0.378; 0.319; 0.291 0.011 sig
SECONDARY
Change in Maternal Weight Postpartum
0.014; -0.008; -0.032 0.11
SECONDARY
Change in Maternal Weight Overall
-0.027; -0.050; -0.084 0.041 sig

Eligibility Criteria

Inclusion Criteria

  • Mother is able to provide written informed consent for her and her infant's participation in this study
  • Mother has confirmed HIV-1 infection based on documented testing of two samples collected at different time points:
  • Sample #1 may be tested using any of the following:
  • Two rapid antibody tests from different manufacturers or based on different principles and epitopes
  • One enzyme immunoassay (EIA) OR Western blot OR immunofluorescence assay OR chemiluminescence assay
  • One HIV DNA polymerase chain reaction (PCR)
  • One quantitative HIV RNA PCR (above the limit of detection of the assay)
  • One qualitative HIV RNA PCR
  • One total HIV nucleic acid test
  • Sample #2 may be tested using any of the following:
  • One rapid antibody test. If this option is used in combination with two rapid tests for Sample #1, at least one of the three rapid tests must be FDA-approved and the third rapid test must be from a third manufacturer or based on a third principle or epitope.
  • One EIA OR Western blot OR immunofluorescence assay OR chemiluminescence assay
  • One HIV DNA PCR
  • One quantitative HIV RNA PCR (above the limit of detection of the assay)
  • One qualitative HIV RNA PCR
  • One total HIV nucleic acid test.
  • See the protocol for more information on this inclusion criterion.
  • At screening, mother is ART-naive, defined as having not received prior antiretroviral therapy other than ARVs received during prior pregnancies or prior periods of breastfeeding (i.e., receipt of any single, dual, or triple ARV regimen during prior time-limited periods of pregnancy and breastfeeding is permitted). Receipt of up to 14 days of ARVs during the current pregnancy is permitted prior to study entry so that initiation of ARVs during the current pregnancy is not delayed during the study screening period. Note: Non-study ART may be initiated in the current pregnancy prior to initiation of the study screening process. For eligible participants, enrollment must occur within 14 days of non-study ART initiation. Note: Receipt of ARVs during a prior pregnancy or prior period of breastfeeding must have concluded at least six months prior to study entry. Receipt of TDF or FTC/TDF for pre-exposure prophylaxis at any time in the past is not exclusionary (even if received within six months prior to study entry).
  • At screening, mother has the following laboratory test results (based on testing of samples collected within 14 days prior to study entry):
  • Grade 1 or lower (less than 2.5 times upper limit of normal [ULN]) alanine aminotransferase (ALT) and aspartate aminotransferase (AST)
  • Grade 2 or lower (less than or equal to 1.8 times ULN) creatinine
  • Grade 2 or lower (greater than or equal to 60 mL/min) estimated creatinine clearance (CrCl; Cockcroft-Gault formula). See the protocol for guidance on severity grading. Laboratory tests may be repeated during the study screening period, with the latest result used for eligibility determination.
  • At screening and at study entry, no evidence of multiple gestation or fetal anomalies, as assessed by best available method
  • At study entry, gestational age of 14-28 weeks, defined as greater than 13 weeks plus six days and less than 28 completed weeks gestation, estimated by best available method. Note: For this inclusion criterion and the previous inclusion criterion, fetal ultrasound is preferred but not required for purposes of eligibility determination. If ultrasound cannot be performed during the study screening period prior to study entry, it must be performed within 14 days after study entry. As further explained in the protocol, enrolled participants will not be withdrawn from the study based on ultrasound findings obtained after study entry.
  • At study entry, mother expects to remain in the geographic area of the study site during pregnancy and for 50 weeks postpartum [Eligibility criteria added per Letter of Amendment 1 to V2; July 2018]:
  • At study entry, mother reports that she does
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03048422) and the linked publication. Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.

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