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Experimental HIV vaccine passes early safety test in healthy volunteers

NCT ID NCT03220724

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested an experimental HIV vaccine in 117 healthy, HIV-negative adults to see if it is safe and triggers an immune response. Participants received several injections of the vaccine or a placebo. The main goals were to check for side effects and measure antibody levels. Results will guide future HIV vaccine research.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Experimental HIV vaccine (EnvSeq-1 and CH505 M5 gp120 proteins with GLA-SE adjuvant)
What this could lead to
If successful, this could help develop a vaccine to prevent HIV infection.
What could go wrong
This is an early Phase 1 trial focused on safety, not effectiveness. The vaccine may not produce strong enough immunity to prevent HIV, and further studies are needed.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

117 people

The number who actually took part.

Started

Aug 2017

Finished

Mar 2023

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 50 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: General and Demographic Criteria: * Age of 18 through 50 years * Access to a participating HIV Vaccine Trials Network (HVTN) clinical research site (CRS) and willingness to be followed for the planned duration of the study * Ability and willingness to provide informed consent * Assessment of understanding: volunteer demonstrates understanding of this study, completes a questionnaire prior to first vaccination with verbal demonstration of understanding of all questionnaire items answered incorrectly * Agrees not to enroll in another study of an investigational research agent before the last required protocol clinic visit * Willing to be contacted by phone, text message, or e-mail 6 months after completion of the scheduled clinic visits * Good general health as shown by medical history, physical exam, and screening laboratory tests HIV-Related Criteria: * Willingness to receive HIV test results * Willingness to discuss HIV infection risks and amenable to HIV risk reduction counseling. * Assessed by the clinic staff as being at "low risk" for HIV infection and committed to maintaining behavior consistent with low risk of HIV exposure through the last required protocol clinic visit. Laboratory Inclusion Values: Hemogram/Complete Blood Count (CBC): * Hemoglobin greater than or equal to 11.5 g/dL for volunteers who were born female, greater than or equal to 13.0 g/dL for volunteers who were born male * White blood cell count equal to 3,300 to 12,000 cells/mm\^3 * Total lymphocyte count greater than or equal to 800 cells/mm\^3 * Remaining differential either within institutional normal range or with site physician approval * Platelets equal to 125,000 to 550,000/mm\^3 Chemistry: * Chemistry panel: alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase less than 1.25 times the institutional upper limit of normal; creatinine less than or equal to institutional upper limit of normal. Virology: * Negative HIV-1 and -2 blood test: Volunteers must have a negative Food and Drug Administration (FDA)-approved enzyme immunoassay (EIA) or chemiluminescent microparticle immunoassay (CMIA). * Negative Hepatitis B surface antigen (HBsAg) * Negative anti-Hepatitis C virus antibodies (anti-HCV), or negative HCV polymerase chain reaction (PCR) if the anti-HCV is positive Urine: * Normal urine: * Negative urine glucose, and * Negative or trace urine protein, and * Negative or trace urine hemoglobin (if trace hemoglobin is present on dipstick, a microscopic urinalysis with red blood cells levels within institutional normal range). Reproductive Status: * Volunteers who were born female: negative serum or urine beta human chorionic gonadotropin (beta-HCG) pregnancy test performed prior to vaccination on the day of initial vaccination. Persons who are NOT of reproductive potential due to having undergone total hysterectomy or bilateral oophorectomy (verified by medical records), are not required to undergo pregnancy testing. * Reproductive status: A volunteer who was born female must: * Agree to consistently use effective contraception (see the protocol for more information) for sexual activity that could lead to pregnancy from at least 21 days prior to enrollment through the last required protocol clinic visit. Effective contraception is defined as using the following methods: * Condoms (male or female) with or without a spermicide, * Diaphragm or cervical cap with spermicide, * Intrauterine device (IUD), * Hormonal contraception, or * Any other contraceptive method approved by the HVTN 115 Protocol Safety Review Team (PSRT) * Successful vasectomy in the male partner (considered successful if a volunteer reports that a male partner has \[1\] documentation of azoospermia by microscopy, or \[2\] a vasectomy more than 2 years ago with no resultant pregnancy despite sexual activity postvasectomy); * Or not be of reproductive potential, such as having reached menopause (no menses for 1 year) or having undergone hysterectomy, bilateral oophorectomy, or tubal ligation; * Or be sexually abstinent. * Volunteers who were born female must also agree not to seek pregnancy through alternative methods, such as artificial insemination or in vitro fertilization until after the last required protocol clinic visit Exclusion Criteria: General: * Blood products received within 120 days before first vaccination * Investigational research agents received within 30 days before first vaccination * Body mass index (BMI) greater than or equal to 40; or BMI greater than or equal to 35 with 2 or more of the following: age greater than 45, systolic blood pressure greater than 140 mm Hg, diastolic blood pressure greater than 90 mm Hg, current smoker, known hyperlipidemia * Intent to participate in another study of an investigational research agent or any other study that requires non-HVTN HIV antibody testing during the planned duration of the HVTN 115 study * Pregnant or breastfeeding * Active duty and reserve U.S. military personnel Vaccines and Other Injections: * HIV vaccine(s) received in a prior HIV vaccine trial. For volunteers who have received control/placebo in an HIV vaccine trial, the HVTN 115 PSRT will determine eligibility on a case-by-case basis. * Previous receipt of monoclonal antibodies (mAbs), whether licensed or investigational; the HVTN 115 PSRT will determine eligibility on a case-by-case basis. * Non-HIV experimental vaccine(s) received within the last 5 years in a prior vaccine trial. Exceptions may be made for vaccines that have subsequently undergone licensure by the FDA or by the national regulatory authority where the volunteer is enrolling. For volunteers who have received control/placebo in an experimental vaccine trial, the HVTN 115 PSRT will determine eligibility on a case-by-case basis. For volunteers who have received an experimental vaccine(s) greater than 5 years ago, eligibility for enrollment will be determined by the HVTN 115 PSRT on a case-by-case basis. * Live attenuated vaccines received within 30 days before first vaccination or scheduled within 14 days after injection (e.g., measles, mumps, and rubella \[MMR\]; oral polio vaccine \[OPV\]; varicella; yellow fever; live attenuated influenza vaccine) * Any vaccines that are not live attenuated vaccines and were received within 14 days prior to first vaccination (e.g., tetanus, pneumococcal, Hepatitis A or B) * Allergy treatment with antigen injections within 30 days before first vaccination or that are scheduled within 14 days after first vaccination Immune System: * Immunosuppressive medications received within 168 days before first vaccination. (Not exclusionary: \[1\] corticosteroid nasal spray; \[2\] inhaled corticosteroids; \[3\] topical corticosteroids for mild, uncomplicated dermatitis; or \[4\] a single course of oral/parenteral prednisone or equivalent at doses less than 60 mg/kg/day and length of therapy less than 11 days with completion at least 30 days prior to enrollment.) * Serious adverse reactions to vaccines or to vaccine components including history of anaphylaxis and related symptoms such as hives, respiratory difficulty, angioedema, and/or abdominal pain. (Not excluded from participation: a volunteer who had a nonanaphylactic adverse reaction to pertussis vaccine as a child.) * Immunoglobulin received within 60 days before first vaccination * Autoimmune disease, current or history * Adverse events of special interest (AESIs) * Volunteers who currently have, or have a history of, any condition that could be considered an AESI for the products administered in this protocol (representative examples are listed in the study protocol) * Immunodeficiency Clinically Significant Medical Conditions: * Untreated or incompletely treated syphilis infection * Clinically significant medical condition, physical examination findings, clinically significant abnormal laboratory results, or past medical history with clinically significant implications for current health. A clinically significant condition or process includes but is not limited to: * A process that would affect the immune response, * A process that would require medication that affects the immune response, * Any contraindication to repeated injections or blood draws, * A condition that requires active medical intervention or monitoring to avert grave danger to the volunteer's health or well-being during the study period, * A condition or process for which signs or symptoms could be confused with reactions to vaccine, or * Any condition specifically listed among the exclusion criteria below. * Any medical, psychiatric, occupational, or other condition that, in the judgment of the investigator, would interfere with, or serve as a contraindication to, protocol adherence, assessment of safety or reactogenicity, or a volunteer's ability to give informed consent * Psychiatric condition that 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. * Current anti-tuberculosis (TB) prophylaxis or therapy * Asthma exclusion criteria: Asthma other than mild, well-controlled asthma. (Symptoms of asthma severity as defined in the most recent National Asthma Education and Prevention Program (NAEPP) Expert Panel report). Exclude a volunteer who: * Uses a short-acting rescue inhaler (typically a beta 2 agonist) daily, or * Uses moderate/high dose inhaled corticosteroids, or * In the past year has either of the following: * Greater than 1 exacerbation of symptoms treated with oral/parenteral corticosteroids; * Needed emergency care, urgent care, hospitalization, or intubation for asthma. * Diabetes mellitus type 1 or type 2, including cases controlled with diet alone. (Not excluded: history of isolated gestational diabetes.) * Thyroidectomy, or thyroid disease requiring medication during the last 12 months * Hypertension: * If a person has been found to have elevated blood pressure or hypertension during screening or previously, exclude for blood pressure that is not well controlled. Well-controlled blood pressure is defined as consistently less than or equal to 140 mm Hg systolic and less than or equal to 90 mm Hg diastolic, with or without medication, with only isolated, brief instances of higher readings, which must be less than or equal to 150 mm Hg systolic and less than or equal to 100 mm Hg diastolic. For these volunteers, blood pressure must be less than or equal to 140 mm Hg systolic and less than or equal to 90 mm Hg diastolic at enrollment. * If a person has NOT been found to have elevated blood pressure or hypertension during screening or previously, exclude for systolic blood pressure greater than or equal to 150 mm Hg at enrollment or diastolic blood pressure greater than or equal to 100 mm Hg at enrollment. * Bleeding disorder diagnosed by a doctor (e.g., factor deficiency, coagulopathy, or platelet disorder requiring special precautions) * Malignancy (Not excluded from participation: Volunteer who has had malignancy excised surgically and who, in the investigator's estimation, has a reasonable assurance of sustained cure, or who is unlikely to experience recurrence of malignancy during the period of the study) * Seizure disorder: History of seizure(s) within past 3 years. Also exclude if volunteer has used medications in order to prevent or treat seizure(s) at any time within the past 3 years. * Asplenia: any condition resulting in the absence of a functional spleen * History of hereditary angioedema, acquired angioedema, or idiopathic angioedema.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Alabama CRS

    Birmingham, Alabama, 35294, United States

  • Bridge HIV CRS

    San Francisco, California, 94102, United States

  • Brigham and Women's Hospital Vaccine CRS (BWH VCRS)

    Boston, Massachusetts, 02115-6110, United States

  • Columbia P&S CRS

    New York, New York, 10032-3732, United States

  • New York Blood Center CRS

    New York, New York, 10065, United States

  • Penn Prevention CRS

    Philadelphia, Pennsylvania, 19104, United States

  • Seattle Vaccine and Prevention CRS

    Seattle, Washington, 98104, United States

  • University of Rochester Vaccines to Prevent HIV Infection CRS

    Rochester, New York, 14642, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.