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AzTrials

HIVNCT04518228

Pharmacokinetic Properties of Antiretroviral and Anti-Tuberculosis Drugs During Pregnancy and Postpartum

An observational study of HIV and Tuberculosis, run by National Institute of Allergy and Infectious Diseases (NIAID) at 23 sites in 8 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record

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Trial summary

The purpose of this study was to evaluate the pharmacokinetic (PK) properties of antiretroviral (ARV) and anti-tuberculosis (TB) drugs administered during pregnancy and postpartum. Read more about this study

Who is it for?
Any age
Conditions the study is for
HIV, Tuberculosis
What is being tested?
Bictegravir (BIC), Tenofovir alafenamide (TAF) and Long-acting injectable formulation of cabotegravir (CAB LA)
Type of treatment
Injection or infusion
How many people
205 participants
Where
23 sitesin 8 countries
Study dates
1 Sep 2021to 10 Jul 2025
Phase
Observational

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: Pregnant and postpartum women living with and without HIV (WLHIV and HIV-uninfected women) receiving ARV and/or TB drugs under study, and their infants.

Who may be able to join

  • Component 1: Pregnant WLHIV receiving oral ARVs and no TB drugs, and their infants
  • Mother is of legal age or otherwise able to provide independent informed consent as determined by site standard operating procedures (SOPs) and consistent with site institutional review board (IRB)/ethics committee (EC) policies and procedures, and is willing and able to provide written informed consent for her own and her infant's participation in this study.
  • Prior to study entry, HIV status confirmed as HIV infected per study protocol.
  • At study entry, pregnant and in one of the following two enrollment windows based on best available obstetrical estimate of gestational age:
  • Second trimester: gestational age of 20 0/7 to 26 6/7 weeks
  • Third trimester: gestational age of 30 0/7 to 37 6/7 weeks
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  • At study entry, receiving at least one of the following oral ARV drugs or drug combinations, based on maternal report and available medical records:
  • Arm 1.1: Bictegravir (BIC) 50 mg q.d.
  • Arm 1.2: Doravirine (DOR) 100 mg q.d.
  • Arm 1.3: Tenofovir alafenamide (TAF) - 10 mg q.d. boosted with cobicistat
  • Arm 1.4: TAF 25 mg q.d. without boosting
  • Arm 1.5: TAF 25 mg q.d. boosted with cobicistat or ritonavir
  • At study entry, planning to continue the current ARV regimen through at least 12 weeks post-delivery, based on maternal report and available medical records.
  • At study entry, has been receiving the drug or drug combination under study at the required dose for at least two weeks, based on maternal report and available medical records.
  • At study entry, assessed by study staff as having no identified barriers to completing initial PK sampling within 20 0/7 - 26 6/7 weeks gestation (second trimester) or 30 0/7 to 37 6/7 weeks gestation (third trimester) and within 14 days of enrollment.
  • At study entry, if receiving a generic formulation of the drug or drug combination under study, approval of the formulation per study protocol.
  • At study entry, not receiving any TB drugs (for either prophylaxis or treatment), based on maternal report and available medical records.
  • Component 2: Pregnant WLHIV and HIV-uninfected women who received long-acting/extended release ARVs during pregnancy, and their infants
  • If of legal age or otherwise able to provide independent informed consent as determined by site SOPs and consistent with site IRB/EC policies and procedures: Willing and able to provide written informed consent for her own and her infant's participation in this study.
  • If not of legal age or otherwise unable to provide independent informed consent as determined by site SOPs and consistent with site IRB/EC policies and procedures: Parent/guardian or other legally authorized representative of the mother and her infant is willing and able to provide written informed consent for the mother and her infant's study participation; in addition, when applicable, the mother is willing and able to provide written assent for her own and her infant's study participation.
  • At study entry, intends to deliver at the study-affiliated clinic or hospital, based on maternal report.
  • At study entry, gestational age of at least 24 0/7 weeks based on best available obstetrical estimate of gestational age, and not yet delivered.
  • At study entry, has received at least one administration of the following, based on available medical records, during the current pregnancy:
  • Arm 2.1: Long-acting injectable formulation of cabotegravir (CAB LA) (any dose)
  • Component 3: Pregnant WLHIV receiving ARVs with first-line TB treatment, and their infants
  • Mother is of legal age or otherwise able to provide independent informed consent as determined by site SOPs and consistent with site IRB/EC policies and procedures, and is willing and able to provide written informed consent for her own and her infant's participation in this study.
  • Prior to study entry, HIV status confirmed as HIV infected per study protocol.
  • At study entry, pregnant and in one of the following two enrollment windows, based on best available obstetrical estimate of gestational age:
  • Second trimester: gestational age of 20 0/7 to 26 6/7 weeks
  • Third trimester: gestational age of 30 0/7 to 37 6/7 weeks
  • At study entry, receiving at least two of the following first-line TB treatment drugs under study AND at least one of the following ARV drugs or drug combinations under study, based on maternal report and available medical records:
  • First-line TB treatment drugs:
  • Isoniazid (INH) 4-6 mg/kg (max 300 mg) q.d.
  • Rifampin (RIF) 8-12 mg/kg (max 600 mg) q.d.
  • Rifabutin (RFB) 150-300 mg q.d.
  • Ethambutol (EMB) 15-20 mg/kg q.d.
  • Pyrazinamide (PZA) 20-30 mg/kg q.d.
  • Moxifloxacin (MFX) 400 mg or 800mg q.d
  • ARVs:
  • Arm 3.1: Dolutegravir (DTG) 50 mg b.i.d. when combined with RIF or 50 mg q.d. if RIF is not part of the TB regimen
  • Arm 3.2: Atazanavir/ritonavir (ATV/r) ≥300/100 mg q.d. or Darunavir/ritonavir (DRV/r) ≥ 600/100 mg b.i.d.
  • Arm 3.3: Lopinavir/ritonavir (LPV/r) 800/200 mg b.i.d.
  • At study entry, has been receiving the drug combination under study at the required dose for at least two weeks based on maternal report and available medical records.
  • At study entry, assessed by study staff as having no identified barriers to completing initial PK sampling within 20 0/7 - 26 6/7 weeks gestation (second trimester) or 30 0/7 to 37 6/7 weeks gestation (third trimester) and within 14 days of enrollment.
  • At study entry, if receiving a generic ARV or TB formulation of the drug or drug combination under study, approval of the formulation per study protocol.
  • At study entry, planning to continue the current ARV regimen through at least 8 weeks post-delivery, based on maternal report and available medical records.
  • Component 4 Inclusion Criteria: Pregnant WLHIV and HIV-uninfected women receiving second-line TB treatment, and their infants
  • Mother is of legal age or otherwise able to provide independent informed consent as determined by site SOPs and consistent with site IRB/EC policies and procedures, and is willing and able to provide written informed consent for her own and her infant's participation in this study.
  • Prior to study entry, HIV status confirmed as HIV-infected or HIV-uninfected, per study protocol.
  • At study entry, pregnant and in one of the following two enrollment windows based on best available obstetrical estimate of gestational age:
  • Second trimester: gestational age of 20 0/7 to 26 6/7 weeks
  • Third trimester: gestational age of 30 0/7 to 37 6/7 weeks
  • At study entry, receiving at least one of the following second-line TB treatment drugs under study, based on maternal report and available medical records:
  • Arm 4.1: Second-line TB treatment drugs:
  • Levofloxacin (LFX) 750mg - 1000mg q.d.
  • Clofazimine (CFZ) 100mg q.d.
  • Linezolid (LZD) 300mg - 600mg q.d.
  • Bedaquiline (BDQ) 200mg t.i.w.
  • Delamanid (DLM) 100mg b.i.d.
  • Moxifloxacin (MFX) 400mg or 800mg q.d and at least one other second-line TB treatment drug under study
  • At study entry, has been receiving the drugs under study at the required dose for at least two weeks, based on maternal report and available medical records.
  • At study entry, assessed by study staff as having no identified barriers to completing initial PK sampling within 20 0/7 - 26 6/7 weeks gestation (second trimester) or 30 0/7 to 37 6/7 weeks gestation (third trimester) and within 14 days of enrollment.
  • At study entry, if receiving a generic formulation of the drug(s) under study, approval of the formulation per study protocol.
  • Component 5: Postpartum WLHIV breastfeeding while receiving oral ARVs, and their infants
  • Mother is of legal age or otherwise able to provide independent informed consent as determined by site SOPs and consistent with site IRB/EC policies and procedures, and is willing and able to provide written informed consent for her own and her infant's participation in this study.
  • Prior to study entry, HIV status confirmed as HIV infected, per study protocol.
  • At study entry, within 5-9 days post-delivery (inclusive).
  • At study entry, breastfeeding mother-infant pair intends to continue exclusive breastfeeding through at least 16 weeks post-delivery.
  • At study entry, mother is receiving any of the following oral ARV drugs or drug combinations:
  • Arm 5.1: Atazanavir/ritonavir (ATV/r)
  • Arm 5.2: Darunavir/ritonavir (DRV/r)
  • Arm 5.3: Lopinavir/ritonavir (LPV/r)
  • At study entry, mother has been receiving the drug(s) or drug combination(s) under study at the required dose for at least two weeks, based on maternal report and available medical records.
  • At study entry, assessed by study staff as having no identified barriers to completing initial PK sampling within the 5-9 days post-delivery PK sampling window.
  • At study entry, mother is planning to continue the current ARV regimen through at least 16 weeks post-delivery, based on maternal report and available medical records.
  • At study entry, if receiving a generic ARV formulation of the drug or drug combination under study, approval of the formulation per study protocol.
  • At study entry, infant weighs at least 1000 grams, based on available medical records.
  • At study entry, infant does not have any severe congenital malformation or other medical condition not compatible with life or that would interfere with study participation or interpretation, as judged by the site investigator.
  • Components 1-4 Exclusion Criteria:
  • At study entry, mother has received within the past 14 days medicines known to interfere with absorption, metabolism, or clearance of the drug or drug combination under study (see study protocol) based on maternal report and available medical records.
  • Note: RIF is permitted for mothers in Components 3 and 4 being evaluated for TB and ARV drug interactions.
  • At study entry, has a clinical or laboratory finding or condition that, in the opinion of the site investigator, is likely to require a change of the ARV or TB drug under study during the period of study follow-up.
  • Arms 1.3, 1.4 and 1.5 only: At study entry, mother has received TDF-based therapy within the past 6 months.
  • Component 5 Exclusion Criteria
  • Mother is currently enrolled in Components 1, 2, 3, or 4.
  • At study entry, the mother or infant has received within the past 14 days medicines known to interfere with absorption, metabolism, or clearance of the drug or drug combination under study based on maternal report and available medical records (see study protocol).
  • At study entry, mother or infant has a clinical or laboratory finding or condition that, in the opinion of the site investigator, is likely to require a change of the drug under study during study follow-up.

Who cannot join

None listed.

Trial locations and contacts

23 sites in 8 countries.

23 sites in 8 countries

United States13 sites
  • Emory University School of Medicine NICHD CRS

    Atlanta, Georgia, 30322

  • Univ. of Colorado Denver NICHD CRS

    Aurora, Colorado, 80045

  • Johns Hopkins Univ. Baltimore NICHD CRS

    Baltimore, Maryland, 21287

  • Rush University Cook County Hospital Chicago NICHD CRS

    Chicago, Illinois, 60612

  • Lurie Children's Hospital of Chicago (LCH) CRS (Site ID: 4001)

    Chicago, Illinois, 60614

  • South Florida CDTC Ft Lauderdale NICHD CRS

    Fort Lauderdale, Florida, 33316

  • University of Florida Jacksonville NICHD CRS

    Jacksonville, Florida, 32209

  • Usc La Nichd Crs

    Los Angeles, California, 90033

  • David Geffen School of Medicine at UCLA NICHD CRS

    Los Angeles, California, 90095-1752

  • Pediatric Perinatal HIV NICHD CRS

    Miami, Florida, 33136

  • University of California, UC San Diego CRS- Mother-Child-Adolescent HIV Program

    San Diego, California, 92103

  • Bronx-Lebanon Hospital Center NICHD CRS

    The Bronx, New York, 10457

  • Jacobi Med. Ctr. Bronx NICHD CRS

    The Bronx, New York, 10461

Other trials in United States

South Africa3 sites
  • Desmond Tutu TB Centre - Stellenbosch University (DTTC-SU) CRS

    Cape Town, 7505

  • Wits RHI Shandukani Research

    Johannesburg, Gauteng, 2001

  • Famcru Crs

    Tygerberg Hills, 7505

Other trials in South Africa

Brazil2 sites
  • Hospital Federal dos Servidores do Estado NICHD CRS

    Rio de Janeiro, 20221-903

  • Hosp. Geral De Nova Igaucu Brazil NICHD CRS

    Rio de Janeiro, 26030

Other trials in Brazil

India1 site
  • Byramjee Jeejeebhoy Medical College (BJMC) CRS

    Pune, Maharashtra, 411001

Other trials in India

Kenya1 site
  • Kenya Medical Research Institute / Walter Reed Project Clinical Research Center, Kericho CRS

    Kericho, 20200

Other trials in Kenya

Puerto Rico1 site
  • IMPAACT/ Gamma Project/ UPR Pediatric HIV/AIDS Research CRS

    San Juan, 00935

Other trials in Puerto Rico

Thailand1 site
  • Siriraj Hospital, Mahidol University NICHD CRS

    Bangkok, Bangkoknoi, 10700

Other trials in Thailand

Uganda1 site
  • Baylor-Uganda CRS

    Kampala

Other trials in Uganda

About this study

The purpose of this study was to evaluate the pharmacokinetic (PK) properties of antiretroviral (ARV) and anti-tuberculosis (TB) drugs administered during pregnancy and postpartum.

Read the detailed description

This study evaluated the pharmacokinetic (PK) properties of antiretroviral (ARV) and anti-tuberculosis (TB) drugs administered during pregnancy and postpartum.

IMPAACT 2026 was a Phase IV observational clinical study. Participants were not assigned to the drugs under study, but were already receiving the drugs for clinical care as prescribed by their clinical care providers. They were enrolled into study arms according to the drugs they were receiving through clinical care, and if on multiple drugs of interest, were able to enroll into multiple arms simultaneously. No ARVs or TB treatment drugs were supplied as part of this study. All drugs under study were provided by non-study sources. The study sponsor added this observational study to an existing investigational new drug (IND) number for off-label use in case the participant's clinical care provider decided to prescribe a higher dose than the approved dose if the PK results for the approved dose indicated that drug exposure may be inadequate.

This study was comprised of five components which in turn are comprised of arms specific to each drug or drug combination being evaluated:

  • Component 1 (Arms 1.1, 1.2. 1.3. 1.4. and 1.5): Pregnant women living with HIV (WLHIV) receiving oral ARVs and no TB drugs, and their infants.
  • Component 2 (Arm 2.1): Pregnant WLHIV and HIV-uninfected women who received long-acting/extended release ARVs during pregnancy, and their infants.
  • Component 3 (Arms 3.1, 3.2, and 3.3): Pregnant WLHIV receiving ARVs and first-line TB treatment, and their infants.
  • Component 4 (Arm 4.1): Pregnant WLHIV and HIV-uninfected women receiving second-line TB treatment, and their infants.
  • Component 5 (Arms 5.1, 5.2. and 5.3): Postpartum WLHIV breastfeeding while receiving oral ARVs, and their infants.

Each arm was to open to accrual independently and accrue independently over approximately 36 months from the first enrollment in each arm. Participants signed a single informed consent for the Component to which they enrolled, and they could only enroll into one component. Women receiving more than one drug under study in a single Component (and their infants) were automatically enrolled into all relevant open arms within that component, based on the drugs under study they were receiving at study entry. There were no changes in arm during the study; a study inclusion criterion was that participants expected to remain on the same treatment regimen until study completion.

Participants in Component 1 were followed up to 12 weeks after delivery for mothers and up to 24 weeks after birth for infants. Participants in Component 2 were to be followed up to 5 weeks after delivery for mothers and infants. Participants in Components 3, 4, and 5 were followed up to 24 weeks after delivery for mothers and infants.

Study visits may include:

  • Component 1: Maternal clinical and laboratory evaluations and PK sampling at second trimester (2T), third trimester (3T), delivery, and 6-12 weeks post-partum (PP). Infant clinical evaluations and washout PK sampling at birth and 5-9 days after birth.
  • Component 2: Maternal clinical and laboratory evaluations and PK sampling at delivery. Infant clinical evaluations and washout PK sampling at birth, 5-9 days, and 12-16 days after birth. Maternal and infant breast milk transfer PK sampling at 5-9 days, 12-16 days, and 3-5 weeks after delivery.
  • Component 3: Maternal clinical and laboratory evaluations and PK sampling at second trimester (2T), third trimester (3T), delivery, and 2-8 weeks post-partum (PP). Infant clinical evaluations and washout PK sampling at birth and 5-9 days after birth. Maternal and infant breast milk transfer PK sampling at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.
  • Component 4: Maternal clinical and laboratory evaluations and PK sampling at second trimester (2T), third trimester (3T), delivery, and 2-8 weeks post-partum (PP). Infant clinical evaluations and washout PK sampling at birth and 5-9 days after birth. Maternal and infant breast milk transfer PK sampling at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.
  • Component 5: Maternal and infant clinical evaluations and breast milk transfer PK sampling at 5-9 days, 2-12 weeks, and 16-24 weeks after delivery.

Component 2 (Arm 2.1) never opened for enrollment because investigations of the PK and safety of long-acting injectable cabotegravir in pregnancy were to be conducted in a separate study.

Arms 1.1 and 1.4 reached their enrollment targets and were closed to accrual. Arms 1.3 and 5.1 were closed to accrual per the decision of the Core Protocol Team because enrollment had slowed substantially and enough participants had been enrolled to proceed with data analysis and publication.

Arms 1.5, 3.2,3.3, 5.2, and 5.3 did not enroll any participants and were closed to accrual per the decision of the Core Protocol Team, because enrollment of enough participants to result in a publication was not anticipated.

The study was closed to accrual on March 5, 2025 at the recommendation of the IMPAACT Study Monitoring Committee (SMC). Prior to closure, 3 arms had open to accrual status: Arms 1.2, 3.1, and 4.1. The SMC suggested that the study objectives for Arm 3.1 could be achieved with the sample size at the time of closure and that the study objectives for Arms 1.2 and 4.1 could not be met within a reasonable timeframe.

Conditions
HIV, Tuberculosis
Being tested
Bictegravir (BIC), Tenofovir alafenamide (TAF), Long-acting injectable formulation of cabotegravir (CAB LA), Dolutegravir (DTG), Atazanavir/ritonavir (ATV/r)
Medical subject headings
Tuberculosis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Bictegravir (BIC)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • Tenofovir alafenamide (TAF)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • Long-acting injectable formulation of cabotegravir (CAB LA)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • Dolutegravir (DTG)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • Atazanavir/ritonavir (ATV/r)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • Darunavir/ritonavir (DRV/r)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • Lopinavir/ritonavir (LPV/r)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • CobicistatDrug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • RitonavirDrug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

  • First-Line TB TreatmentDrug

    Participants will be receiving first-line TB treatment with at least two of the following TB treatment drugs: isoniazid (INH), rifampin (RIF), rifabutin (RFB), ethambutol (EMB), pyrazinamide (PZA), or moxifloxacin (MFX).

    Drugs will be administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants.

  • Second-Line TB TreatmentDrug

    Participants will be receiving second-line TB treatment with at least one of the following second-line TB treatment drugs:

    • Levofloxacin (LFX) 750mg - 1000mg q.d.
    • Clofazimine (CFZ) 100mg q.d.
    • Linezolid (LZD) 300mg - 600mg q.d.
    • Bedaquiline (BDQ) 200mg three times per week (t.i.w.)
    • Delamanid (DLM) 100mg b.i.d.
    • Moxifloxacin (MFX) 400mg or 800mg q.d., and at least one other second-line TB treatment drug under study

    Drugs will be administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants.

  • Doravirine (DOR)Drug

    Administered consistent with the package inserts and/or instructions provided by the non-study sources who prescribe or supply the drugs to participants

Study groups in NCT04518228
Study groupRoleWhat they receive
Component 1: Arm 1.1: Bictegravir (BIC) 50 mg q.d.Women ≥ 20 weeks gestation not receiving TB drugs and receiving bictegravir (BIC) 50 mg once daily (q.d.), and their infants
Receives: Drug: Bictegravir (BIC)
Component 1: Arm 1.2: Doravirine (DOR) 100 mg q.d.Women ≥ 20 weeks gestation not receiving TB drugs and receiving doravirine (DOR) 100 mg q.d., and their infants
Receives: Drug: Doravirine (DOR)
Component 1: Arm 1.3: Tenofovir alafenamide (TAF) 10 mg q.d. boosted with cobicistatWomen ≥ 20 weeks gestation not receiving TB drugs and receiving tenofovir alafenamide (TAF) 10 mg q.d. boosted with cobicistat, and their infants
Receives: Drug: Tenofovir alafenamide (TAF); Drug: Cobicistat
Component 1: Arm 1.4: TAF 25 mg q.d. without boostingWomen ≥ 20 weeks gestation not receiving TB drugs and receiving TAF 25 mg q.d. without boosting, and their infants
Receives: Drug: Tenofovir alafenamide (TAF)
Component 1: Arm 1.5: TAF 25 mg q.d. with boostingWomen ≥ 20 weeks gestation not receiving TB drugs and receiving TAF 25 mg q.d. boosted with cobicistat or ritonavir, and their infants
Receives: Drug: Tenofovir alafenamide (TAF); Drug: Cobicistat; Drug: Ritonavir
Component 2: Arm 2.1: Long-acting injectable formulation of cabotegravir (CAB LA)Women ≥ 24 weeks gestation who received at least one dose of long-acting injectable formulation of cabotegravir (CAB LA) any dose during pregnancy, and their infants
Receives: Drug: Long-acting injectable formulation of cabotegravir (CAB LA)
Component 3: Arm 3.1: Dolutegravir (DTG) 50 mgWomen ≥ 20 weeks gestation receiving first-line TB treatment with at least two of the following TB treatment drugs: isoniazid (INH), rifampin (RIF), rifabutin (RFB), ethambutol (EMB), pyrazinamide (PZA), moxifloxacin (MFX), and receiving dolutegravir (DTG) 50 mg twice daily (b.i.d.) when combined with RIF or 50 mg q.d. if RIF is not part of the TB regimen, and their infants
Receives: Drug: Dolutegravir (DTG); Drug: First-Line TB Treatment
Component 3: Arm 3.2: ATV/r or DRV/rWomen ≥ 20 weeks gestation receiving first-line TB treatment with at least two of the following TB treatment drugs: isoniazid (INH), rifampin (RIF), rifabutin (RFB), ethambutol (EMB), pyrazinamide (PZA), moxifloxacin (MFX), and receiving atazanavir/ritonavir (ATV/r) ≥ 300/100 mg q.d. or darunavir/ritonavir (DRV/r) ≥ 600/100 mg b.i.d., and their infants
Receives: Drug: Atazanavir/ritonavir (ATV/r); Drug: Darunavir/ritonavir (DRV/r); Drug: First-Line TB Treatment
Component 3: Arm 3.3: Lopinavir/ritonavir (LPV/r) 800/200 mgWomen ≥ 20 weeks gestation receiving first-line TB treatment with at least two of the following TB treatment drugs: isoniazid (INH), rifampin (RIF), rifabutin (RFB), ethambutol (EMB), pyrazinamide (PZA), moxifloxacin (MFX), and receiving lopinavir/ritonavir (LPV/r) 800/200 mg b.i.d., and their infants
Receives: Drug: Lopinavir/ritonavir (LPV/r); Drug: First-Line TB Treatment
Component 4: Arm 4.1: Second-line TB treatment drugsWomen ≥ 20 weeks gestation receiving at least one of the following second-line TB treatment drugs, and their infants: * Levofloxacin (LFX) 750mg - 1000mg q.d. * Clofazimine (CFZ) 100mg q.d. * Linezolid (LZD) 300mg - 600mg q.d. * Bedaquiline (BDQ) 200mg three times per week (t.i.w.) * Delamanid (DLM) 100mg b.i.d. * Moxifloxacin (MFX) 400mg or 800mg q.d., and at least one other second-line TB treatment drug under study
Receives: Drug: Second-Line TB Treatment
Component 5: Arm 5.1: ATV/rWomen post-delivery receiving ATV/r, and their infants
Receives: Drug: Atazanavir/ritonavir (ATV/r)
Component 5: Arm 5.2: DRV/rWomen post-delivery receiving DRV/r, and their infants
Receives: Drug: Darunavir/ritonavir (DRV/r)
Component 5: Arm 5.3: LPV/rWomen post-delivery receiving LPV/r, and their infants
Receives: Drug: Lopinavir/ritonavir (LPV/r)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Women Who Meet Area Under the Curve (AUC) Target in Plasma (Component 1)

    A target AUC was derived for each drug as the 10th percentile for the non-pregnant population based on historical control data. The target AUC is 58.7 mg*h/L for Arm 1.1 and 10.0 mg*h/L for Arm 1.2. Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. McNemar's test was not conducted for Arm 1.2 due to low sample size.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 6-12 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, 12, and 24 hours post-dose.

  2. Median Maternal AUC in Plasma (Component 1)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. Wilcoxon signed-rank test was not conducted for Arm 1.2 due to low sample size.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 6-12 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, 12, and 24 hours post-dose.

  3. Median Maternal Tenofovir-diphosphate (TFV-DP) Concentrations in Dried Blood Spots (DBS) (Component 1)

    TFV-DP intracellular concentrations in DBS samples. Concentrations obtained from two 7 mm punches.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 6-12 weeks after delivery). Samples collected pre-dose.

  4. Median Maternal Tenofovir-diphosphate (TFV-DP) Concentrations in Peripheral Blood Mononuclear Cells (PBMCs ) (Component 1)

    TFV-DP intracellular concentrations in PBMC samples.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 6-12 weeks after delivery). Samples collected pre-dose and at 3 and 24 hours post-dose.

  5. Median Maternal Isoniazid (INH) AUC in Plasma (Component 3)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  6. Median Maternal Rifampin (RIF) AUC in Plasma (Component 3)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  7. Median Maternal Ethambutol (EMB) AUC in Plasma (Component 3)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  8. Median Maternal Pyrazinamide (PZA) AUC in Plasma (Component 3)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint. Comparison of Antepartum vs. Postpartum was not done due to low sample size.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  9. Median Maternal Dolutegravir (DTG) AUC in Plasma (Component 3)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint. The data of the P1026s arm was not reported since it's not one of the arms in this study.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  10. Median Maternal Bedqauiline (BDQ) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint. Wilcoxon signed-rank test was not conducted for Arm 4.1 due to low sample size.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  11. Median Maternal Clofazimine (CFZ) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint. Wilcoxon signed-rank test was not conducted for Arm 4.1 due to low sample size.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  12. Median Maternal Delamanid (DLM) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint. Wilcoxon signed-rank test was not conducted for Arm 4.1 due to low sample size.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  13. Median Maternal Levofloxacin (LFX) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  14. Median Maternal Linezolid (LZD) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint. Wilcoxon signed-rank test was not conducted for Arm 4.1 due to low sample size.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  15. Median Maternal Atazanavir (ATV) Breast Milk/Maternal Plasma Concentration Ratio (Component 5)

    Breast milk and maternal plasma concentrations were collected at study visits and compared as a ratio. A higher ratio indicates the potential for higher infant drug exposure through breast milk. Only measured for mothers who met the breast milk transfer PK sampling requirements outlined in the protocol.

    Measured: Measured at 5-9 days, 2-12 weeks, and 16-24 weeks post-delivery

  16. Median Maternal Ritonavir (RTV) Breast Milk/Maternal Plasma Concentration Ratio (Component 5)

    Breast milk and maternal plasma concentrations were collected at study visits and compared as a ratio. A higher ratio indicates the potential for higher infant drug exposure through breast milk. Only measured for mothers who met the breast milk transfer PK sampling requirements outlined in the protocol.

    Measured: Measured at 5-9 days, 2-12 weeks, and 16-24 weeks post-delivery

  17. Infant Atazanvir (ATV) Plasma Concentration (Component 5)

    Only measured for infants who met the breast milk transfer PK sampling requirements outlined in the protocol. The lower limit of quantitation (LLoQ) was 23.4 ng/mL for ATV.

    Measured: Measured at 5-9 days, 2-12 weeks, and 16-24 weeks of life

  18. Infant Ritonavir (RTV) Plasma Concentration (Component 5)

    Only measured for infants who met the breast milk transfer PK sampling requirements outlined in the protocol. The lower limit of quantitation (LLoQ) was 9.8 ng/mL for RTV.

    Measured: Measured at 5-9 days, 2-12 weeks, and 16-24 weeks of life

Secondary outcomes (33)
  1. Median Ratio of Cord Blood Concentration to Maternal Blood Concentration (Component 1, Arms 1.1 and 1.2)

    Cord blood and maternal blood concentrations were collected and measured for the drug(s) under study at delivery and compared as a ratio.

    Measured: Measured at time of delivery with single cord blood and single maternal blood sample.

  2. Median Ratio of Cord Blood Concentration to Maternal Blood Concentration (Component 1, Arms 1.3 and 1.4)

    Cord blood and maternal blood concentrations were collected and measured for the drug(s) under study at delivery and compared as a ratio. There are four analytes for Arms 1.3 and 1.4: tenofovir alafenamide fumarate (TAF) in plasma, tenofovir-diphosphate (TFV-DP) in dried blood spots (DBS), TFV-DP in peripheral blood mononuclear cells (PBMCs), and tenofovir (TFV) in plasma. For Arm 1.3 TAF in plasma, all values were below the lower level of quantitation.

    Measured: Measured at time of delivery with single cord blood and single maternal blood sample.

  3. Median Ratio of Cord Blood Concentration to Maternal Blood Concentration (Component 3)

    Cord blood and maternal blood concentrations were collected and measured for the drugs under study at delivery and compared as a ratio. The analytes for Arm 3.1 were: isoniazid (INH), rifampin (RIF), ethambutol (EMB), pyrazinamide (PZA), and dolutegravir (DTG).

    Measured: Measured at time of delivery with single cord blood and single maternal blood sample.

  4. Median Ratio of Cord Blood Concentration to Maternal Blood Concentration (Component 4)

    Cord blood and maternal blood concentrations were collected and measured for the drugs under study at delivery and compared as a ratio. The analytes for Arm 4.1 were: bedaquiline (BDQ), clofazimine (CFZ), delamanid (DLM), levofloxacin (LFX), and linezolid (LZD).

    Measured: Measured at time of delivery with single cord blood and single maternal blood sample.

  5. Median Infant Washout Half-life of Drug After Birth (Component 1)

    Infant washout PK concentrations were measured during the first 9 days of life. Half-life was calculated based on the concentrations. The analyte of Arm 1.4 is tenofovir in plasma.

    Measured: Measured at birth (2-10 hours, 18-28 hours and 36-72 hours) and 5-9 days after birth

  6. Infant Washout Half-life of Drug After Birth (Component 3)

    Infant washout PK concentrations were measured during the first 9 days of life. Half-life was calculated based on the concentrations. The analytes for Arm 3.1 were: isoniazid (INH), rifampin (RIF), ethambutol (EMB), pyrazinamide (PZA), and dolutegravir (DTG).

    Measured: Measured at birth (2-10 hours, 18-28 hours and 36-72 hours) and 5-9 days after birth

  7. Infant Washout Half-life of Drug After Birth (Component 4)

    Infant washout PK concentrations were measured during the first 9 days of life. Half-life was calculated based on the concentrations where it was possible to calculate. The analytes for Arm 4.1 were: bedaquiline (BDQ), clofazimine (CFZ), delamanid (DLM), levofloxacin (LFX), and linezolid (LZD).

    Measured: Measured at birth (2-10 hours, 18-28 hours and 36-72 hours) and 5-9 days after birth

  8. Maternal Breast Milk/Maternal Plasma Concentration Ratio (Components 3 and 4)

    Breast milk and maternal plasma concentrations were collected at study visits to be compared as a ratio, measured for mothers who met the breast milk transfer PK sampling requirements outlined in the protocol. A higher ratio indicates the potential for higher infant drug exposure through breast milk. Per the protocol, breast milk transfer sampling was not to be performed for Arm 3.1. For Arm 4.1, samples were collected but not run and have yet to be analyzed. The anticipated reporting date is April 2027.

    Measured: Measured at 2-8 weeks postpartum (and 5-9 days and 16-24 weeks post-delivery if the requirements for breast milk transfer PK sampling are met)

  9. Infant Plasma Concentration (Component 3)

    Plasma concentrations as part of breast milk transfer sampling. Per the protocol, breast milk transfer sampling was not to be performed for Arm 3.1.

    Measured: Measured through Week 24

  10. Median Infant Bedaquiline (BDQ) Plasma Concentration (Component 4)

    Infant plasma concentration as part of breast milk transfer sampling to describe the kinetics of drug transfer from mother to infant via breast milk

    Measured: Measured at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.

  11. Median Infant Clofazimine (CFZ) Plasma Concentration (Component 4)

    Infant plasma concentration as part of breast milk transfer sampling to describe the kinetics of drug transfer from mother to infant via breast milk

    Measured: Measured at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.

  12. Median Infant Delamanid (DLM) Plasma Concentration (Component 4)

    Infant plasma concentration as part of breast milk transfer sampling to describe the kinetics of drug transfer from mother to infant via breast milk

    Measured: Measured at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.

  13. Median Infant Levofloxacin (LFX) Plasma Concentration (Component 4)

    Infant plasma concentration as part of breast milk transfer sampling to describe the kinetics of drug transfer from mother to infant via breast milk

    Measured: Measured at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.

  14. Median Infant Linezolid (LZD) Plasma Concentration (Component 4)

    Infant plasma concentration as part of breast milk transfer sampling to describe the kinetics of drug transfer from mother to infant via breast milk

    Measured: Measured at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.

  15. Median Infant Dolutegravir (DTG) Plasma Concentration (Component 4)

    Infant plasma concentration as part of breast milk transfer sampling to describe the kinetics of drug transfer from mother to infant via breast milk

    Measured: Measured at 5-9 days, 2-8 weeks, and 16-24 weeks after delivery.

  16. Median Maternal Efavirenz (EFV) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery).

  17. Median Maternal Lopinavir (LPV) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery).

  18. Median Median Atazanavir (ATV) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery).

  19. Median Maternal Darunavir (DRV) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery).

  20. Median Maternal Dolutegravir (DTG) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods. AUC reported is the AUC to the last measurable timepoint.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery). Sampling performed pre-dose and at 1, 2, 4, 6, 8, and 12 hours post-dose.

  21. Median Maternal Raltegravir (RAL) AUC in Plasma (Component 4)

    Pharmacokinetic parameters were determined by the study pharmacologists from plasma concentration-time profiles using noncompartmental methods.

    Measured: Measured at 2nd trimester (2T, 20 0/7 - 26 6/7 weeks of pregnancy), 3rd trimester (3T, 30 0/7 - 37 6/7 weeks of pregnancy), and postpartum (PP, 2-8 weeks after delivery).

  22. Number of Participants With Grade 3 or Higher Maternal Adverse Events

    Maternal Grade 3 or higher adverse events. Adverse events were graded according to the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events (DAIDS AE Grading Table), Corrected Version 2.1, dated July 2017.

    Measured: Component 1 measured through Week 12 post-delivery; Component 3 and 4 measured through Week 8 post-delivery (except breastmilk transfer women measured through Week 24 post-delivery); Component 5 measured through Week 24 post-delivery.

  23. Number of Participants With Grade 2 or Higher Infant Adverse Events

    Infant Grade 2 or higher adverse events. Adverse events were graded according to the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events (DAIDS AE Grading Table), Corrected Version 2.1, dated July 2017.

    Measured: Measured from entry through Week 24

  24. Number of Participants With Maternal Serious Adverse Events

    Maternal serious adverse events which were graded according to the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events (DAIDS AE Grading Table), Corrected Version 2.1, dated July 2017

    Measured: Component 1 measured through Week 12 post-delivery; Component 3 and 4 measured through Week 8 post-delivery (except breastmilk transfer women measured through Week 24 post-delivery); Component 5 measured through Week 24 post-delivery.

  25. Number of Participants With Infant Serious Adverse Events

    Infant serious adverse events. Adverse events were graded according to the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events (DAIDS AE Grading Table), Corrected Version 2.1, dated July 2017

    Measured: Measured from entry through Week 24

  26. Number of Participants With Grade 3 or Higher Maternal Adverse Events Assessed as Related to the Drug Under Study

    Maternal Grade 3 or higher adverse events assessed as related to the drug under study. Adverse events were graded according to the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events (DAIDS AE Grading Table), Corrected Version 2.1, dated July 2017.

    Measured: Component 1 measured through Week 12 post-delivery; Component 3 and 4 measured through Week 8 post-delivery (except breastmilk transfer women measured through Week 24 post-delivery); Component 5 measured through Week 24 post-delivery.

  27. Number of Participants With Grade 2 or Higher Infant Adverse Events Assessed as Related to the Drug Under Study

    Infant Grade 2 or higher adverse events assessed as related to the drug under study. Adverse events were graded according to the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events (DAIDS AE Grading Table), Corrected Version 2.1, dated July 2017

    Measured: Measured from entry through Week 24

  28. Pregnancy Outcome

    Outcome of pregnancy categorized as live birth, stillbirth, spontaneous abortion, and etc.

    Measured: Measured on maternal delivery date/infant Day 0

  29. Median Gestational Age at Birth

    Infant gestational age at birth (weeks)

    Measured: Measured on Day 0 (0-3 days)

  30. Median Infant Birth Weight

    Infant birth weight (grams)

    Measured: Measured on Day 0 (0-3 days)

  31. Occurrence of Congenital Anomaly or Mitochondrial Disorder

    Presence of any congenital anomaly or mitochondrial disorder identified in infants.

    Measured: Measured from Day 0 through Week 24 for Components 1, 3, 4 and 5; measured from Day 0 through Week 5 for Component 2

  32. Infant HIV Status

    Infant HIV status which is determined according to diagnosis per local standard of care

    Measured: Measured from Day 0 through Week 24

  33. Maternal HIV-1 RNA

    Plasma HIV-1 RNA levels in the mothers as in categories. The highest value of the lower limits of quantitation (LLoQ) for each arm was used for categorizations. The LLoQs are: Arm 1.1 - 40 copies/mL, Arm 1.2 - 20 copies/mL, Arm 1.3 and Arm 1.4 - 200 copies/mL, Arm 3.1 - 40 copies/mL, and Arm 4.1 - 50 copies/mL.

    Measured: Measured in 2nd Trimester,(2T, 20 0/7 to 26 6/7 weeks of pregnancy), 3rd Trimester (3T, 30 0/7 to 37 6/7 weeks of pregnancy), delivery, and PP (2-8 weeks or 6-12 weeks after delivery, depending on study arm)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Aug 2020
  2. Study start1 Sep 2021
  3. Primary completion24 Apr 2025
  4. Study completion10 Jul 2025

Why it stopped: The study was closed to accrual early based on Study Monitoring Committee review indicating that the study objectives had either been achieved or could not be met within a reasonable timeframe for the then-open arms.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
205 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04518228
Sponsor's protocol ID
IMPAACT 2026
Other IDs
38609
Status last verified
Aug 2026
First submitted
5 Mar 2020
Last updated
26 Aug 2026
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Individual participant data that underlie results in the publication, after deidentification.

Publications

  • Powis KM, Pinilla M, McMorrow F, Stek A, Brooks KM, Shapiro DE, Knowles K, Eke AC, Greene E, Agwu A, Topete L, Browning R, Chakhtoura N, Arora P, Huang X, Best BM, Mirochnick M, Momper JD; IMPAACT 2026 Protocol Team. Pharmacokinetics and Safety of Bictegravir in Pregnant and Postpartum Persons With HIV and Their Infants. J Acquir Immune Defic Syndr. 2025 Mar 1;98(3):300-307. doi: 10.1097/QAI.0000000000003571.

    PubMed 39813286

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