ClinicalTrials.gg
CompletedNCT04173819Updated Nov 4, 2026

Safety and Pharmacokinetics of the Combination Broadly Neutralizing Antibodies, 3BNC117-LS-J and 10-1074-LS-J, in Healthy American and African Adults

A Phase 1/2 interventional study of 3BNC117-LS-J and 10-1074-LS-J in HIV-1-infection, sponsored by International AIDS Vaccine Initiative. Completed at 9 sites in 5 countries. Open to participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-11-04.

Sponsored by International AIDS Vaccine Initiative · Phase 1/2, Interventional, and Prevention

From the registry’s dates

  • Primary completion was Sep 2023, 3 years 2 months ago, and no results have been posted to the registry.
Updated Nov 4, 2026Start date moved1 site added+1 moreGo to Updates ↓
Phase
Phase 1/2
Study type
Interventional
Enrollment
225
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
All
01

Study summary

This is a Phase 1/2 study to evaluate the safety, tolerability, and pharmacokinetics of two broadly neutralizing monoclonal human antibodies (bNAbs), 3BNC117-LS-J, which targets the CD4 binding site on HIV-1 envelope protein, and 10-1074-LS-J which targets the V3 loop of HIV-1 envelope protein. The hypothesis is that the two antibodies will be safe for healthy HIV-1 uninfected adults when co-administered subcutaneously or intravenously and, after subcutaneous administration in the optimal ratio, each antibody will maintain serum levels >10 µg/ml for at least 3 months in HIV-uninfected participants.

02

Conditions studied

  • HIV-1-infection
03

In context

Lead sponsor

International AIDS Vaccine Initiative is the lead sponsor of 37 studies on the registry; 5 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Healthy male and female individuals, as assessed by a medical history, physical exam, and laboratory tests
  • At least 18 years of age on the day of screening and have not reached their 46th birthday on the day of the first administration
  • Willing to undergo testing, risk reduction counseling and receive HIV test results; committed to maintaining low-risk behavior for the trial duration
  • Willing to comply with the requirements of the protocol and available for follow-up for the planned duration of the study
  • All male and female participants of who are engaging in sexual activity that could lead to pregnancy must commit to use an effective method of from enrollment until 9 months after the last administration
  • Willing to forgo donations of blood, or any other tissues during the study following confirmation of study eligibility and, for those who test HIV-positive due to antibody-induced seropositivity, until the anti-HIV antibody titers become undetectable on HIV tests used in the community

Exclusion criteria

Exclusion Criteria:

  • Confirmed infection
  • Reported risk for HIV infection within 6 months prior to product administration, as defined by: Unprotected sexual intercourse with a known HIV-infected person, a partner known to be at high risk for HIV infection and/or a casual partner (i.e. no continuing established relationship), engaged in sex work, frequent excessive daily alcohol use or frequent binge drinking or any other use of illicit drugs, history of newly-acquired syphilis, gonorrhea, non-gonococcal urethritis, HSV-2, chlamydia, pelvic inflammatory disease (PID), trichomonas, mucopurulent cervicitis, epididymitis, proctitis, lymphogranuloma venereum, chancroid, or or , three or more sexual partners
  • Any acute or chronic medical condition that is considered progressive or in the opinion of the investigator makes the participant unsuitable for participation in the study
  • Infectious disease diagnosis: Hepatitis B infection as measured by HbsAg and/or PCR, Hepatitis C infection (US: HCV RNA positive, or interferon-alpha treatment for hepatitis C infection in the past year, or interferon-alpha-free treatment for hepatitis C infection completed in the past 6 months; Africa: HCV Ab positive and/or PCR positive), active syphilis (positive RPR confirmed by TPHA)
  • Receipt of blood transfusion or blood-derived products within the previous 3 months
  • Participation in another clinical trial of an investigational product currently, within the previous 3 months or expected participation during this study (Concurrent participation in an observational trial not requiring blood or tissue sample collection is not an exclusion)
  • Psychiatric condition that compromises safety of the participant and precludes compliance with the protocol. Specifically excluded are persons with psychoses within the past 3 years, ongoing risk for suicide, or history of suicide attempt or gesture within the past 3 years
  • (BMI) >40
  • Active tuberculosis
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Reproductive potential

Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.

Criteria about it usually ask for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
225 participants (actual)

Study arms

  • Experimental
    Group 1

    Single Agent, abdominal subcutaneous injection, 10:2 ratio for Ab:placebo

    Biological: 3BNC117-LS-J · Biological: Placebo

  • Experimental
    Group 2

    Single agent, abdominal subcutaneous injection 10:2 ratio for Ab:placebo

    Biological: 10-1074-LS-J · Biological: Placebo

  • Experimental
    Group 3

    Single agent intravenous injection 10:2 ratio for Ab:placebo

    Biological: 3BNC117-LS-J · Biological: Placebo

  • Experimental
    Group 4

    Single agent intravenous injection 10:2 ratio for Ab:placebo

    Biological: 10-1074-LS-J · Biological: Placebo

  • Experimental
    Group 5

    Combined agent intravenous injection 10:2 ratio for Ab:placebo

    Biological: Combination 3BNC117-LS-J and 10-1074-LS-J · Biological: Placebo

  • Experimental
    Group 6

    Subcutaneous injection combined ratio 1 with loading dose 30:3 ratio of Ab:Placebo

    Biological: Combination 3BNC117-LS-J and 10-1074-LS-J Ratio 1 · Biological: Placebo

  • Experimental
    Group 7

    Subcutaneous injection in abdomen combined ratio 2 with loading dose 30:3 ratio of Ab:Placebo

    Biological: Combination 3BNC117-LS-J and 10-1074-LS-J Ratio 2 · Biological: Placebo

  • Experimental
    Group 8

    Subcutaneous injection in abdomen combined ratio 3 with loading dose 30:3 ratio of Ab:Placebo

    Biological: Combination 3BNC117-LS-J and 10-1074-LS-J Ratio 3 · Biological: Placebo

  • Experimental
    Group 9

    Subcutaneous injection in abdomen combined ratio 2 without loading dose 30:3 ratio of Ab:Placebo

    Biological: Combination 3BNC117-LS-J and 10-1074-LS-J Ratio 2 · Biological: Placebo

  • Experimental
    Group 10

    Subcutaneous injection in arm combined ratio 2 without loading dose 30:3 ratio of Ab:Placebo

    Biological: Combination 3BNC117-LS-J and 10-1074-LS-J Ratio 2 · Biological: Placebo

Interventions

  • Biological3BNC117-LS-J

    300mg

  • Biological10-1074-LS-J

    300mg

  • BiologicalCombination 3BNC117-LS-J and 10-1074-LS-J

    30mg/kg of each

  • BiologicalCombination 3BNC117-LS-J and 10-1074-LS-J Ratio 1

    Total \~300 mg (\< 2.5 ml) combined of 3BNC117-LS-J and 101074-LS-J - Dosage ratios chosen will be those considered worthy of further investigation based on the safety and preliminary PK observed in groups 1-2

  • BiologicalCombination 3BNC117-LS-J and 10-1074-LS-J Ratio 2

    Total \~300 mg (\< 2.5 ml) combined of 3BNC117-LS-J and 101074-LS-J - Dosage ratios chosen will be those considered worthy of further investigation based on the safety and preliminary PK observed in groups 1-2

  • BiologicalCombination 3BNC117-LS-J and 10-1074-LS-J Ratio 3

    Total \~300 mg (\< 2.5 ml) combined of 3BNC117-LS-J and 101074-LS-J - Dosage ratios chosen will be those considered worthy of further investigation based on the safety and preliminary PK observed in groups 1-2

  • BiologicalPlacebo

    0.9% Saline

  • BiologicalPlacebo

    Buffer Solution

06

What researchers measure

Primary outcomes

  1. 1. Proportion of participants with solicited and treatment-related unsolicited adverse events and their duration.

    Time frame: 92 Weeks

  2. Proportion of participants with serious adverse events (SAEs) throughout the study period that are considered related to investigational product and their duration.

    Time frame: 92 Weeks

  3. Serum concentration of each antibody in each group at multiple timepoints along with participant characteristics (e.g. sex, weight, and BMI)

    Time frame: 92 Weeks

  4. The ratio of 3BNC117-LS-J to 10-1074-LS-J that, when injected SC, will maintain similar levels of each bNAb at steady state.

    Time frame: 92 Weeks

Secondary outcomes

  1. Serum concentration of anti-3BNC117-LS-J antibodies in each group at multiple timepoints.

    Time frame: 92 Weeks

  2. Serum concentration of anti-10-1074-LS-J antibodies in each group at multiple timepoints.

    Time frame: 92 Weeks

07

Study locations

9 sites
  • Brigham and Women's Hospital
    Boston, Massachusetts 02115, United States
  • The Rockefeller University
    New York, New York 10065, United States
  • Fred Hutchinson Cancer Research Center
    Seattle, Washington 98109, United States
  • Partners in Health Research and Development
    Thika, Kiambu County, Kenya
  • Kenya AIDS Vaccine Initiative - Institute of Clinical Research
    Nairobi, Kenya
  • Center for Family Health Research
    Kigali, Rwanda
  • Wits Reproductive Health and HIV Institute
    Johannesburg, South Africa
  • Uganda Virus Research Institute
    Entebbe, Uganda
  • Infectious Diseases Institute Kasangati
    Kampala, Uganda
08

References and documents

Publications

  • Weiner JA, Banks LA, Natarajan H, Lin S, Sami S, Kovacikova G, Carpenter MC, Ackerman ME. Drawing a line in the sand: impact of analytical choices on anti-drug antibody cut-points and testing outcomes. Bioanalysis. 2026 Jun-Jun;18(8-9):711-722. doi: 10.1080/17576180.2026.2698615. Epub 2026 Jul 14. PubMed 42444466 ↗

Related links

Individual participant data

Plan to share: No

09

Updates

1 registry update since Sep 25, 2026
Sites
1 site added, 1 site removed
Show site
  • Partners in Health Research and Development · Thika, Kenya
Show 1 removed
  • Partners in Health Research and Development · Thika, Kenya
Nov 4, 2026
Start date
Jan 25, 2019→Feb 18, 2020
Nov 4, 2026
Publications
1 publication citing this study linked from PubMed, e.g. PubMed 42444466 ↗
Nov 4, 2026
Show all 1 update
  1. Nov 4, 2026
    Publications 1 publication citing this study linked from PubMed, e.g. PubMed 42444466 ↗
    1 site added, 1 site removed
    Show site
    • Partners in Health Research and Development · Thika, Kenya
    Show 1 removed
    • Partners in Health Research and Development · Thika, Kenya
    Start date Jan 25, 2019→Feb 18, 2020
    + 3 other changes: verification date, oversight details and index terms

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT04173819
Lead sponsor
International AIDS Vaccine Initiative
Responsible party
Sponsor
First posted
Nov 22, 2019
Start date
Feb 18, 2020
Primary completion
Sep 1, 2023
Completion
Sep 1, 2023
Last update
Nov 4, 2026

Study contacts

Marina Caskey, MD
study chair · Rockefeller University

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Teropavimab

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