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HIV InfectionPhase 1NCT04340596

Safety, Tolerability, and Efficacy of IL-15 Superagonist (N-803) With and Without Combination Broadly Neutralizing Antibodies to Induce HIV-1 Control During Analytic Treatment Interruption

A Phase 1 study testing N-803 (IL-15 Superagonist), VRC07-523LS and 10-1074 in people with HIV Infection, run by National Institute of Allergy and Infectious Diseases (NIAID) at 14 sites in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The purpose of this study is to evaluate the safety, tolerability, and efficacy of N-803, an IL-15 superagonist, with or without combination broadly neutralizing antibodies (bNAbs), to induce HIV-1 control during analytic treatment interruption (ATI). Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
HIV Infection
What is being tested?
N-803 (IL-15 Superagonist), VRC07-523LS and 10-1074
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
118 participants
Where
14 sitesUnited States
Study dates
21 May 2021to 30 Dec 2026
Phase
Phase 1
Are there results?
Not yet: the study is under way

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 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • HIV-1 infection
  • On ART for at least 96 weeks prior to randomization
  • On ART regimen containing an integrase inhibitor and two nucleoside reverse transcriptase inhibitors (NRTIs) or dolutegravir/lamivudine for at least 6 weeks prior to randomization.
  • CD4 cell count >450 cells/mm^3 within 90 days prior to randomization
  • CD4 cell count nadir ≥200 cells/mm^3.
  • Plasma HIV-1 RNA levels of <50 copies/mL for at least 96 weeks prior to randomization
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  • Select laboratory results within 90 days of randomization
  • IC90 to 10-1074 of ≤1.5 mcg/mL, 10-1074 maximum percent inhibition (MPI) ≥98%, and IC80 to VRC07-523LS of ≤1 mcg/mL on the Monogram PhenoSense assay.
  • QTcF interval ≤440 msec within 90 days prior to randomization.
  • For cisgender women and transgender men of reproductive potential, negative urine or serum pregnancy test within 30 days prior to randomization
  • Cisgender women and transgender men of reproductive potential must agree to use two methods of contraception, if participating in sexual activity that could lead to pregnancy.
  • Cisgender men and transgender women participants engaging in sexual activity that could lead to pregnancy and who are of reproductive potential must agree to use a barrier method of contraception
  • Willingness to abstain from sexual intercourse or use a barrier method of contraception consistently
  • Willingness to participate in an ATI.
  • Weight >50 kg and <115 kg.
  • Completion of pre-entry leukapheresis

Who cannot join

  • History of AIDS-defining illness, with the exception of recurrent pneumonia.
  • History of or current clinical cardiovascular disease
  • Current clinically significant acute or chronic medical condition
  • History of HIV-associated neurocognitive disease
  • History of an HIV-associated malignancy
  • ART initiated during acute HIV infection
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  • Current receipt of ART other than NRTI and integrase inhibitor.
  • Resistance to one or more drugs in two or more ARV drug classes.
  • Receipt of any therapeutic HIV vaccine or monoclonal antibody therapy (anti-HIV or otherwise) at any time in the past.
  • History of prior immunoglobulin (IgG) therapy.
  • History of use of any immunomodulatory medications within 6 months prior to randomization
  • Participation in another clinical study of an investigational product currently or within past 12 weeks
  • Breastfeeding or pregnancy

Trial locations and contacts

14 sites in 1 country.

14 sites in 1 country

United States14 sites
  • Alabama CRS (Site ID# 31788)

    Birmingham, Alabama, 35222

  • Massachusetts General Hospital CRS (MGH CRS) (Site ID: 101)

    Boston, Massachusetts, 02114

  • Chapel Hill CRS (Site ID: 3201)

    Chapel Hill, North Carolina, 27599

  • Northwestern University CRS

    Chicago, Illinois, 60611

  • Case Clinical Research Site

    Cleveland, Ohio, 44106

  • UCLA CARE Center CRS

    Los Angeles, California, 90035

  • Columbia P&S CRS

    New York, New York, 10032

  • Weill Cornell Uptown CRS (Site ID: 7803)

    New York, New York, 10065

  • New Jersey Medical School Clinical Research Center CRS [Site ID: 31786]

    Newark, New Jersey, 07103

  • Penn Therapeutics, CRS (Site ID: 6201)

    Philadelphia, Pennsylvania, 19104

  • UCSD Antiviral Research Center CRS (Site ID: 701)

    San Diego, California, 92103

  • University of California, San Fransisco HIV/AIDS CRS

    San Francisco, California, 94110

  • Washington University Therapeutics (WT) CRS

    St Louis, Missouri, 63110-1010

  • Whitman-Walker Institute, Inc. CRS (Site ID: 31791)

    Washington D.C., District of Columbia, 20005

Other trials in United States

About this study

Official title: A Phase I Clinical Trial of the Safety, Tolerability, and Efficacy of IL-15 Superagonist (N-803) With and Without Combination Broadly Neutralizing Antibodies to Induce HIV-1 Control During Analytic Treatment Interruption

The purpose of this study is to evaluate the safety, tolerability, and efficacy of N-803, an IL-15 superagonist, with or without combination broadly neutralizing antibodies (bNAbs), to induce HIV-1 control during analytic treatment interruption (ATI).

Read the detailed description

This study will evaluate the safety, tolerability, and efficacy of N-803, an IL-15 superagonist, with or without combination broadly neutralizing antibodies (bNAbs), to induce HIV-1 control during analytic treatment interruption (ATI).

Participants will be screened for eligibility and undergo leukapheresis, and a subset will also undergo optional rectal biopsy and/or lymph node fine needle aspirations (FNAs) (Step 1).

After pre-entry and determination of eligibility in Step 1, participants will be randomized before Step 2 entry to either the N-803 only arm (Arm A) or the N-803 with combination bNAbs arm (Arm B):

  • Arm A will receive a dose of N-803, 6 mcg/kg, subcutaneously 1 week after Step 2 entry and then every 3 weeks for a total of eight doses (during the first 22 weeks).
  • Arm B will receive the following (during the first 22 weeks):
  • Combination bNAb at Step 2 entry with VRC07-523LS dosed at 20 mg/kg and 10-1074 dosed at 30 mg/kg, intravenously;
  • A dose of N-803, 6 mcg/kg, subcutaneously 1 week after Step 2 entry and then every 3 weeks for a total of eight doses;
  • A second dose of 10-1074 at week 9 of Step 2 dosed at 30 mg/kg, intravenously

After completing randomized treatment (Step 2), participants will interrupt antiretroviral therapy (ART) (Step 3) and will be followed closely to monitor for indications for reinitiation of ART (Step 4).

After Step 2 entry, most participants will be followed for approximately 100 weeks across the remaining three study steps (i.e., Steps 2, 3, and 4).

Step 1 will last up to 90 days, Step 2 will last approximately 52 weeks (study intervention), Step 3 will last up to 24 weeks (ATI), and Step 4 will last 24 weeks (ART restart).

Conditions
HIV Infection
Being tested
N-803 (IL-15 Superagonist), VRC07-523LS, 10-1074
Medical subject headings
HIV Infections

What participants receive

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

  • N-803 (IL-15 Superagonist)Biological

    Administered by subcutaneous (SQ) injection

  • VRC07-523LSBiological

    Administered by intravenous (IV) infusion

  • 10-1074Biological

    Administered by intravenous (IV) infusion

Study groups in NCT04340596
Study groupRoleWhat they receive
Arm A: N-803 onlyExperimentalParticipants will receive N-803 6 mcg/kg 1 week after Step 2 entry and then every 3 weeks for a total of eight doses.
Receives: Biological: N-803 (IL-15 Superagonist)
Arm B: N-803 in combination with 10-1074 and VRC07-523LSExperimentalParticipants will receive N-803 in combination with 10-1074 and VRC07-523LS as follows: * At Step 2 entry: * VRC07-523LS 20 mg/kg * 10-1074 30 mg/kg * At Step 2, week 1: N-803 6 mcg/kg every 3 weeks for eight doses * At Step 2, week 9: 10-1074 30 mg/kg
Receives: Biological: N-803 (IL-15 Superagonist); Biological: VRC07-523LS; Biological: 10-1074

What is being measured

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

  1. Occurrence of a Grade ≥3 adverse event (AE) that is at least possibly related to N-803, as judged by the Clinical Management Committee (CMC)

    Measured: Step 2 week 1 to week 52

  2. Number of N-803 doses completed

    Eight doses of N-803 are scheduled at the distinct time points listed in Time Frame. At each timepoint, dose completion status is recorded. Number of N-803 doses completed is the total number completed doses across all 8 timepoints.

    Measured: From step 2 week 1 to step 2 week 22

  3. Proportion of participants requiring dose reduction

    Eight doses of N-803 are scheduled at distinct time points (Step 2 weeks 1, 4, 7, 10, 13, 16, 19 and 22). Proportion of participants requiring dose reduction is calculated as the number of participants who receive a reduced dose of N-803 at any of the 7 scheduled doses occurring after the first dose, divided by the total number of participants receiving N-803.

    Measured: From step 2 week 4 to step 2 week 22

  4. Proportion of participants with plasma HIV-1 RNA <200 copies/mL 8 weeks after interruption of ART

    Measured: At step 3 week 8

Secondary outcomes (12)
  1. Occurrence of a Grade ≥2 AE without regard to relationship to study treatment

    Measured: Study entry to participant's last study visit, at approx. study week 100

  2. Occurrence of a Grade ≥2 AE that is at least possibly related to N-803, as judged by the CMC

    Measured: Step 2 week 1 to week 52

  3. Occurrence of a Grade ≥2 AE that is at least possibly related to VRC07-523LS or 10-1074

    Measured: Step 2 week 0 to week 52

  4. Cell-associated HIV-1 RNA

    Measured: At Step 2 weeks 0, 1, 7, 13, 19, 22, 26 and 32

  5. Measurement of HIV-1 reservoir (dQVOA)

    Measured: At Step 2 weeks 0, 1, 7, 13, 19, 22, 26 and 32

  6. Measurement of plasma viremia by HIV-1 single copy assay

    Measured: At step 1 pre-entry evaluation and step 2 weeks 0, 1, 7, 13, 22 and 32

  7. Measurement of intact proviral DNA

    Measured: At Step 2 weeks 0, 1, 7, 13, 19, 22, 26 and 32

  8. Total HIV-1 DNA

    Measured: At Step 2 weeks 0, 1, 7, 13, 19, 22, 26 and 32

  9. Proportion of participants with plasma HIV-1 RNA <200 copies/mL at 4, 12 and 24 weeks after interruption of ART in Step 3

    Measured: At step 3 weeks 4, 12, and 24

  10. PK parameters: AUC0-τ of 10-1074

    Measured: At step 2 weeks 0, 1, 4, 7, 9, 10, 13, 16, 19, 22, 26, 32 and 46

  11. PK parameters: AUC0-τ of VRC07-523LS

    Measured: At step 2 weeks 0, 1, 4, 7, 9, 10, 13, 16, 19, 22, 26, 32 and 46

  12. Proportion of participants with antidrug antibodies

    Presence of anti-N803, anti-10-1074, and anti-VRC07-523LS antibodies

    Measured: At step 2 weeks 0, 1, 4, 7, 9, 10, 13, 16, 19, 22, 26, 32 and 46

Timeline

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

  1. First posted9 Apr 2020
  2. Study start21 May 2021
  3. Primary completion7 May 2026
  4. Study completion30 Dec 2026 (estimated)

Resources

More details

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

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
118 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04340596
Sponsor's protocol ID
ACTG A5386
Other IDs
38639
Status last verified
Aug 2026
First submitted
23 Mar 2020
Last updated
26 Aug 2026
Results posted
No
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.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing N-803 (IL-15 Superagonist), VRC07-523LS and 10-1074 in people with HIV Infection, run by National Institute of Allergy and Infectious Diseases (NIAID) at 14 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 16 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 26 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 14 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Occurrence of a Grade ≥3 adverse event (AE) that is at least possibly related to N-803, as judged by the Clinical Management Committee (CMC) (time frame: Step 2 week 1 to week 52). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Aug 2026.

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