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Phase 1 N=75 Randomized Triple-blind Prevention

Influenza A/H5N1 Vaccine Clinical Trial (IVACFLU-A/H5N1) - Phase 1

Influenza A Subtype H5N1 Infection

Enrolled (actual)
75
Serious AEs
0.0%
Results posted
Mar 2019
Primary outcome: Primary: Immediate Reactions Occurring Within 60 Minutes of Administration of Any Dose — 0; 0; 0; 0 Participants

Study Design & Population

Study type
Interventional
Phase
Phase 1
Interventions
IVACFLU-A/H5N1, 7.5 mcg (Biological); IVACFLU-A/H5N1, 15 mcg (Biological); Placebo Comparator (Other)
Age
Adult · 18+ yrs
Sex
All
Sponsor
Institute of Vaccines and Medical Biologicals, Vietnam
Primary completion
Aug 2014

Outcome Measures

OutcomeResultp-value
PRIMARY
Immediate Reactions Occurring Within 60 Minutes of Administration of Any Dose
0; 0; 0; 0
PRIMARY
Number of Participants With at Least One Solicted Reactogenicity After Both Injections
26; 26; 52; 4; 25; 24
PRIMARY
Number of Participants With at Least One Unsolicited AE
12; 12; 4
PRIMARY
All Serious Adverse Events (SAEs) Occurring Within 3 Weeks of Receipt of Any Dose
0; 0; 0
SECONDARY
The Proportion of Subjects Achieving a Hemagglutination Inhibition (HAI) Titer ≥ 1:40 Pre-vaccination (Day 0) to Post 2nd Vaccination (Day 49)
7; 9; 16; 0; 13; 18
SECONDARY
The Proportion of Subjects Achieving a Four-fold Rise in HAI Between Doses or From Baseline to Post-Injection 2
11; 12; 23; 0; 9; 11
SECONDARY
Geometric Mean Titer (GMT) of Hemagglutination Inhibition After Each Dose
5.00; 5.00; 5.00; 5.00; 12.8; 11.9
SECONDARY
Geometric Mean Titer (GMT) of Neutralizing Antibody After Each Dose
5.00; 5.00; 5.00; 5.00; 9.4; 9.4

Summary

This is a first-in-human study of safety and immunogenicity of an A/H5N1 inactivated whole cell vaccine when given in two injections in two doses (low and high) compared to a placebo in 76 healthy adult subjects in Vietnam. Vaccine and placebo are manufactured by the IVAC in Vietnam.

Eligibility Criteria

Inclusion Criteria

  • Male or female adult 18 through 30 years of age at the enrollment visit.
  • Literate and willing to provide written informed consent.
  • Healthy adults, as established by the medical history and screening evaluations, including physical examination.
  • Capable and willing to complete diary cards and willing to return for all follow-up visits.
  • For females, willing to utilize reliable birth control measures (intrauterine device, hormonal contraception, condoms) through the Day 42 visit

Exclusion Criteria

  • Participation in another clinical trial involving any therapy within the previous three months or planned enrollment in such a trial during the period of this study.
  • Receipt of any non-study vaccine within four weeks prior to enrollment or refusal to postpone receipt of such vaccines until after the Day 42 visit.
  • Current or recent (within two weeks of enrollment) acute illness with or without fever.
  • Receipt of immune globulin or other blood products within three months prior to study enrollment or planned receipt of such products prior to the Day 42 visit.
  • Chronic administration (defined as more than 14 consecutively-prescribed days) of immunosuppressants or other immune-modulating therapy within six months prior to study enrollment. (For corticosteroids, this means prednisone or equivalent, ≥ 0.5 mg per kg per day; topical steroids are allowed.)
  • History of asthma.
  • Hypersensitivity after previous administration of any vaccine.
  • Other AE following immunization, at least possibly related to previous receipt of any vaccine.
  • Suspected or known hypersensitivity to any of the study vaccine components, including chicken or egg protein.
  • Known hypersensitivities (allergies) to food or the natural environment.
  • Acute or chronic clinically significant pulmonary, cardiovascular, hepatobiliary, metabolic, neurologic, psychiatric or renal functional abnormality, as determined by medical history, physical examination or clinical laboratory screening tests, which in the opinion of the investigator, might interfere with the study objectives.
  • History of any blood or solid organ cancer.
  • History of thrombocytopenic purpura or known bleeding disorder.
  • History of seizures.
  • Known or suspected immunosuppressed or immunodeficient condition of any kind.
  • Known chronic HBV or HCV infection.
  • Known active tuberculosis or symptoms of active tuberculosis, regardless of cause.
  • History of chronic alcohol abuse and/or illegal drug use.
  • Pregnancy or lactation. (A negative pregnancy test will be required before administration of study product for all women of childbearing potential.)
  • History of Guillain-Barré Syndrome
  • Any condition that, in the opinion of the investigator, would increase the health risk to the subject if he/she participates in the study or would interfere with the evaluation of the study objectives.
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT02171819). 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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