Could a vaccine shield HIV-Exposed newborns? early trial launches
NCT ID NCT06613789
First seen Jun 27, 2026 · Last updated Sep 18, 2026 · Updated 1 time
Summary
This early-stage trial will test a new HIV vaccine in 22 infants who were exposed to HIV during birth but are not infected. The vaccine is designed to train the immune system to recognize and fight HIV. The main goal is to see if the vaccine is safe and whether it triggers an immune response. The study is not yet recruiting.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- 426c.Mod.Core-C4b vaccine with 3M-052-AF and alum adjuvants
- What this could lead to
- If successful, this could point toward a safe vaccine to protect HIV-exposed infants from infection.
- What could go wrong
- This is a very early Phase 1 trial with only 22 infants, so it is primarily checking safety, not effectiveness. The vaccine may not produce a strong immune response or could have side effects.
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
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 22 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Mar 2027
An estimate. Start dates often move.
- Expected to finish
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Jun 2027
An estimate. End dates often move.
- Lead sponsor
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A research network
The lead sponsor is a research network or cooperative group.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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Up to 7 days
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: Mother * Mother's age is at least 18 years and is willing and able to provide written informed consent for their and their infant's participation in this study * Mother is in the second or third trimester of singleton pregnancy, as determined by a clinical exam or sonography and reported menstrual history * Mother agrees to donate umbilical cord blood * Mother has a planned Caesarian delivery at Chris Hani Baragwanath Academic Hospital (Soweto) and plans to remain in the area after delivery and through study duration * Mother is determined by the site investigator to be in good overall health at the time of delivery based on medical history and physical exam * Mother has a documented CD4 count of more than 350 cells/mcL at screening * Mother has been on cART for at least 16 weeks prior to delivery and intends to continue with cART for the duration of breastfeeding * Mother has a viral load of less than 400 copies/mL between 2 weeks before and 7 days after delivery * Mother has access to the participating HVTN CRS and is willing to be followed for the planned duration of the study * Mother demonstrates understanding of this study and is able and willing to complete the informed consent process and delivery with verbal demonstration of understanding of all questionnaire items answered incorrectly * Mother agrees not to enroll either self or infant in another research study for the duration of the trial without prior approval of the HVTN 316 PSRT. * Mother has confirmed positive HIV-1 status documented by medical records at any time during or prior to screening, and confirmed by the HVTN CRS by serology Exclusion Criteria: Mother * Any World Health Organization (WHO) grade IV illness within 1 year prior to study enrollment, as determined by the history and physical examination and review of the medical record (if available). These include HIV wasting syndrome; PJP pneumonia; cerebral toxoplasmosis; extrapulmonary cryptococcosis; progressive multifocal leukoencephalopathy; any disseminated endemic mycosis (histoplasmosis); candidiasis of the esophagus, trachea, bronchi, or lung; disseminated atypical mycobacteria; non-typhoid salmonella septicemia; extrapulmonary tuberculosis; lymphoma; and Kaposi's sarcoma. * Prior participation in any HIV-1 vaccine or anti-HIV antibody-mediated prevention trial * Receipt of any investigational agent during this pregnancy * Receipt of blood products, immunoglobulin (Ig), or immunomodulating therapy within 45 days prior to, and the day of delivery * 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 infant safety or reactogenicity, or a volunteer's ability to give informed consent * Any condition that places the newborn at higher risk of early-onset sepsis, such as concern for active maternal infection at delivery, as determined by local site investigators (eg, fever) * Detectable hepatitis B surface antigen (HBsAg) Inclusion Criteria: Infant * Born via Caesarean delivery to a pregnant woman living with HIV-1 who meets all maternal inclusion/exclusion criteria listed above * Estimated gestational age at birth is at least 37 weeks Note: If gestational age at birth is not documented in the infant's available birth records, study staff may assess gestational age at the earliest possible opportunity during the screening period and use this assessment for purposes of eligibility determination. * Weight at birth is at least 2.5 kg * Has initiated ARV prophylaxis consistent with current site-specific standard of care * Hemoglobin (HgB) more than 14.0 g/dL * White blood cell (WBC) count ≥ 7,000 cells/mm3 * Platelets more than 100,000 cells/mm3 * Alanine aminotransferase (ALT) less than 1.25 times upper limit of age-adjusted normal * Creatinine less than 1.1 times upper limit of age adjusted normal * Negative HIV-1 nucleic acid test (NAT) on specimen drawn within 72 hours of birth * Written informed consent provided by mother * Age is equal to or less than 7 days Exclusion Criteria: Infant * Any clinically significant congenital anomaly/birth defect * Documented or suspected serious medical illness, infection, clinically significant finding from physical examination, or immediate life-threatening condition, including requirement for ongoing supplemental oxygen, as judged by the examining clinician * Receipt of or anticipated need for blood products, immunoglobulin, or immunosuppressive therapy. This includes infants who require hepatitis B immunoglobulin (HBIG), but it does not require exclusion of infants who receive hepatitis B vaccine in the newborn period. * Receipt of any other investigational product
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Soweto HVTN CRS
Soweto, Gauteng, 1862, South Africa
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Other studies related to the condition(s) this trial covers.
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