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CompletedNCT05724472Updated Nov 6, 2024

Evaluation of Safety and Immunogenicity of rVSVΔG-SEBOV-GP Vaccine in Adults With Good General Health

A Phase 1 interventional study of rVSV∆G-SEBOV-GP Vaccine or Placebo in Ebola Sudan Virus Disease, sponsored by International AIDS Vaccine Initiative. Completed at 2 sites in United States. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-11-06.

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

From the registry’s dates

  • Primary completion was Jan 2024, 2 years 8 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
36
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
All
01

Study summary

A Phase 1, Single-blind, Placebo-controlled, Dose-escalation Clinical Trial to Evaluate the Safety and Immunogenicity of rVSVΔG-SEBOV-GP Vaccine at 3 Dose Levels in Adults in Good General Health

Read the detailed description

The purpose of this study is to provide the needed safety and immunogenicity data to support rapid deployment of the SEBOV vaccine against an ongoing or future outbreak.

The intervention will be a single dose and will either be study vaccine named rVSVΔG-SEBOV-GP Vaccine, or placebo (a placebo is an inactive substance or other intervention that looks the same as and is given the same way as study vaccine or treatment being tested)

There are 3 group in this study, each group has different vaccine doses. Group 1 starts with the lowest dose of the study vaccine and each subsequent group Groups 2 and Group 3 gets a higher dose of the study vaccine.

Approximately 36 participants will be included in the study.

The participant will be unaware of the treatment given between placebo and study vaccine.

Participants will be screened up to 14 days before IP administration and will be followed for 6 months after IP administration. The anticipated study duration for each participant in Groups 1 through 3 is approximately 6.5 months from screening through last study visit.

02

Conditions studied

  • Ebola Sudan Virus Disease

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03

In context

Virus Diseases

914 studies on the registry are indexed under Virus Diseases; 110 are open to participants now.

This study's enrollment of 36 is below the median of 102 across 604 interventional studies indexed under Virus Diseases.

Browse Virus Diseases studies →

Lead sponsor

International AIDS Vaccine Initiative is the lead sponsor of 36 studies on the registry; 6 are open to participants now.

Of its 7 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 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Good general health
  • ≥18 years of age on the day of screening and are ≤50 years of age on the day of IP administration
  • Adherence to the requirements of the protocol and the follow-up for the planned duration of the study
  • Undergo HIV testing, risk reduction counseling, and receive HIV test results
  • As applicable use male or female condoms for 1 month following IP administration
  • Use an effective method of contraception from at least 2 weeks before and continue until 3 months following receipt of vaccine
  • As applicable undergo urine pregnancy tests
  • Forgo donation of blood or any other tissues throughout the course of the study

Exclusion criteria

Exclusion:

  • Any clinically relevant abnormality
  • Any clinically significant acute or chronical medical condition
  • Women who are pregnant or breastfeeding
  • Bleeding disorder
  • Infectious disease
  • History of splenectomy
  • Receipt of any vaccine within the previous 28 days or planned receipt within 28 days after vaccination with IP.
  • Receipt of blood transfusion or blood-derived products within 3 months prior to screening
  • Prior exposure to SEBOV or history of any hemorrhagic fever
  • Prior receipt of any VSV-vectored vaccine
  • Receipt of another IP within 3 months prior to enrollment or expected participation during this study.
  • Prior receipt of another Sudan Ebola vaccine or receipt of polyclonal or monoclonal antibodies directed against Sudan Ebola in the past 6 months
  • History of severe reactogenicity to vaccines or severe allergy to food or medications
  • A history of malignancy in the past 5 years (prior to screening) or ongoing malignancy.
  • Serious infections requiring antibiotic, antiviral, or antifungal therapy within 30 days prior to enrollment
  • Body mass index (BMI) ≥35
  • Current or planned occupational or household contact from screening through 3 months after vaccine administration with any immunocompromised individual
05

Study design

Phase
Phase 1
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
36 participants (actual)

Study arms

  • Experimental
    Study Group 1

    rVSV∆G-SEBOV-GP Vaccine or Placebo Dosage 2 × 10\^6 pfu intramuscularly Day 1

    Drug: rVSV∆G-SEBOV-GP Vaccine or Placebo

  • Experimental
    Study Group 2

    rVSV∆G-SEBOV-GP Vaccine or Placebo Dosage 2 × 10\^7 pfu intramuscularly Day 1

    Drug: rVSV∆G-SEBOV-GP Vaccine or Placebo

  • Experimental
    Study Group 3

    rVSV∆G-SEBOV-GP Vaccine or Placebo Dosage 2 × 10\^8 pfu intramuscularly Day 1

    Drug: rVSV∆G-SEBOV-GP Vaccine or Placebo

Interventions

  • DrugrVSV∆G-SEBOV-GP Vaccine or Placebo

    rVSV∆G-SEBOV-GP Vaccine or Placebo

06

What researchers measure

Primary outcomes

  1. To evaluate the safety and tolerability of rVSVΔG-SEBOV-GP vaccine

    Proportion of participants with Grade 3 or higher reactogenicity (ie, solicited AEs) during the 14 days after vaccine administration

    Time frame: 14 days

  2. To evaluate the safety and tolerability of rVSVΔG-SEBOV-GP vaccine

    Proportion of participants with Grade 2 or higher vaccine-related unsolicited AEs, including safety laboratory parameters, within 14 days of vaccine administration

    Time frame: 14 days

  3. To evaluate the safety and tolerability of rVSVΔG-SEBOV-GP vaccine

    Proportion of participants with Grade 2 or higher unsolicited AEs, including safety laboratory parameters, within 14 days of vaccine administration

    Time frame: 14 days

  4. To evaluate the safety and tolerability of rVSVΔG-SEBOV-GP vaccine

    Proportion of participants with vaccine-related SAEs throughout the study period

    Time frame: 14 days

Secondary outcomes

  1. To determine SEBOV-GP-specific antibody responses induced by rVSVΔG-SEBOV-GP vaccine

    Proportion of participants with binding antibody responses to SEBOV-GP

    Time frame: 6.5 months

  2. To determine SEBOV-GP-specific antibody responses induced by rVSVΔG-SEBOV-GP vaccine

    Magnitude of binding antibody responses to SEBOV-GP

    Time frame: 6.5 months

  3. To determine SEBOV-GP-specific antibody responses induced by rVSVΔG-SEBOV-GP vaccine

    Proportion of participants with neutralizing antibody responses against SEBOV

    Time frame: 6.5 months

  4. To determine SEBOV-GP-specific antibody responses induced by rVSVΔG-SEBOV-GP vaccine

    Magnitude of neutralizing antibody responses against SEBOV

    Time frame: 6.5 months

Other outcomes

  1. To explore the characteristics of the immune responses induced by rVSV∆G-SEBOV-GP vaccine

    Anti-GP IgG antibodies as measured in 'effector assays' such as ADCC

    Time frame: 6.5 months

  2. To explore the characteristics of the immune responses induced by rVSV∆G-SEBOV-GP vaccine

    Anti-GP antibody epitope specificity

    Time frame: 6.5 months

  3. To explore the characteristics of the immune responses induced by rVSV∆G-SEBOV-GP vaccine

    Anti-VSV-N antibodies

    Time frame: 6.5 months

  4. To explore the characteristics of the immune responses induced by rVSV∆G-SEBOV-GP vaccine

    Additional exploratory immunological assessments may be conducted as warranted

    Time frame: 6.5 months

07

Study locations

2 sites
  • Benchmark Research
    Austin, Texas 78705, United States
  • Clinical Trials of Texas
    San Antonio, Texas 78229, United States
08

References and documents

Study documents

  • Informed consent form · Mar 21, 2023

Documents are hosted by the registry — open the source record to download them.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 6, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05724472
Lead sponsor
International AIDS Vaccine Initiative
Collaborators
Biomedical Advanced Research and Development Authority
Responsible party
Sponsor
First posted
Feb 13, 2023
Start date
Jun 19, 2023
Primary completion
Jan 9, 2024
Completion
Jan 9, 2024
Last update
Nov 6, 2024

Oversight

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

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This study is completed, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.

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