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Phase 2 N=115 Randomized Quadruple-blind Prevention

VSV-ZEBOV Geneva Vaccine Trial

Ebolavirus Disease

Enrolled (actual)
115
Serious AEs
1.7%
Results posted
May 2023
Primary outcome: Primary: Titers of ZEBOV-specific IgG Antibodies — 1227; 25; 344.5 ELISA units per ml

Study Design & Population

Study type
Interventional
Phase
Phase 2
Interventions
VSV-ZEBOV (Biological)
Age
Adult, Older Adult · 18+ yrs
Sex
All
Sponsor
University Hospital, Geneva
Primary completion
Apr 2015

Outcome Measures

OutcomeResultp-value
PRIMARY
Titers of ZEBOV-specific IgG Antibodies
1227; 25; 344.5
SECONDARY
Number of Participants With Solicited Local and Systemic Reactogenicity Signs and Symptoms
1; 0; 0; 2; 0; 1
SECONDARY
Number of Participants With Unsolicited Adverse Events
11; 0; 13
SECONDARY
Number of Participants With a Serious Adverse Event (SAE)
1; 0; 1
SECONDARY
Magnitude (Copies/ml) of VSVΔG-ZEBOV Viremia
323; 15; 178; 15; 15; 15
SECONDARY
Persistence of Titers of ZEBOV-specific IgG Antibodies
51; 0; 49
SECONDARY
Titers of Neutralizing ZEBOV-specific IgG Antibodies
4.24; 4.00; 4.00; 4.22; 13.24; 16.02
SECONDARY
Duration of VSVΔG-ZEBOV Viremia
42; 6; 39; 8; 1; 1
SECONDARY
Number of Participants in Whom Shedding of VSVΔG-ZEBOV Was Detected in Urine and/or Saliva.
0; 0; 0

Summary

The hemorrhagic fever resulting from Ebola infection is frequently fatal; the current Ebola outbreak, still in its ascendant phase, has a mortality rate over 50%. There is no proven therapy or prevention available at this time. The vaccine candidate VSV-ZEBOV (BPSC1001) has shown promising safety and efficacy in preventing Ebola Zaire infections in non-human primates (NHP). Before it can be assessed in large Phase IIb/3 trials in affected areas, safety data from phase 1 first-in-human trials are needed. To accelerate this process, the World Health Organization (WHO) has constituted a consortium of Clinical Research Centers in Switzerland, Germany, and Africa that will use similar protocols to collectively include roughly 250 volunteers, the sample size required to identify a 2-fold difference in anti-ZEBOV IgG antibody titers following immunization with 2 different doses of BPSC1001. The joint primary objectives of this single-center, double-blind, randomized placebo-controlled phase 1 dose-finding study are to assess the safety and tolerability of the VSV-ZEBOV vaccine when administered to healthy volunteers at a lower or higher vaccine dose and to define whether seroresponses differ significantly following immunization with the lower or higher vaccine dose.

Eligibility Criteria

Inclusion Criteria

  • Has provided written informed consent before screening
  • Adult male or non-pregnant, non-lactating female, ages 18 to 65 (inclusive) at the time of screening
  • Free of clinically significant health problems, as determined by pertinent medical history and clinical examination at study screening
  • Females of childbearing potential who are willing to use an effective method of contraception, from at least 7 days prior to vaccination through the end of the study period, and a double method from day 0 through day 28
  • Males who are willing to use effective contraception from day 0 through day 28:
  • Be willing to minimize blood and body fluid exposure of others for 7 days after vaccination
  • Use of effective barrier prophylaxis, such as latex condoms, during penetrative sexual intercourse (avoiding the sharing of needles, razors, or toothbrushes, avoiding open-mouth kissing, be willing to refrain from blood donation during the course of the study)

Exclusion Criteria

  • Prior receipt of an Ebolavirus or Marburgvirus vaccine, a VSV-vectored vaccine, or any other investigational vaccine likely to impact on interpretation of the trial data
  • Serologic evidence of prior Ebola exposure
  • Has a household contact (HHC) who is immunodeficient, HIV-positive, pregnant, has an unstable medical condition in the opinion of the investigator (e.g., New York Heart Association Class ≥ II heart failure, severe debilitating asthma and/or chronic obstructive pulmonary disease)
  • Works with livestock
  • History of severe local or systemic reactions to any vaccination or a history of severe allergic reactions
  • Known allergy to the components of the BPSC1001 vaccine product
  • Receipt of investigational product up to 30 days prior to enrollment or ongoing participation in another interventional clinical trial
  • Receipt of licensed vaccines within 14 days of planned study immunization (30 days for live vaccines) or ongoing participation in another clinical interventional trial
  • Acute or chronic, clinically significant psychiatric, hematologic, pulmonary, cardiovascular, or hepatic or renal functional abnormality as determined by the Investigator based on medical history, physical exam, and/or laboratory screening test
  • Any baseline laboratory screening tests which is outside of acceptable range as defined in the protocol: ALT, AST, creatinine, hemoglobin, platelet count, total white blood cell count, urine protein, urine occult blood, urine glucose
  • Serologic evidence of hepatitis C infection, evidence of active hepatitis B infection
  • Any confirmed or suspected immunosuppressive or immunodeficient condition, including human immunodeficiency virus (HIV) infection, asplenia, cytotoxic therapy in the previous 5 years, and/or diabetes
  • Any chronic or active neurologic disorder, including seizures, and epilepsy, excluding febrile seizures as a child
  • Has a known history of Guillain-Barré Syndrome
  • Has an active malignancy or recent ( 14 days) immunosuppressants or other immune-modifying drugs within 6 months of study entry
  • Any other significant finding that, in the opinion of the investigator, would increase the risk of the individual's having an adverse outcome by participating in this study
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT02287480). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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