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Phase 1 N=60 Randomized Quadruple-blind Prevention

Seasonal Trivalent Inactivated Split Virion Influenza Vaccine Clinical Trial (IVACFLU-S)

Influenza, Human

Enrolled (actual)
60
Serious AEs
0.0%
Results posted
Jan 2019
Primary outcome: Primary: Number of Participants With Immediate Adverse Events — 0; 0 participants

Study Design & Population

Study type
Interventional
Phase
Phase 1
Interventions
Trivalent Seasonal Influenza Vaccine (Biological); Placebo (Other)
Age
Adult · 18+ yrs
Sex
All
Sponsor
Institute of Vaccines and Medical Biologicals, Vietnam
Primary completion
Feb 2016

Outcome Measures

OutcomeResultp-value
PRIMARY
Number of Participants With Immediate Adverse Events
0; 0
PRIMARY
Number and Percentage of Participants Reporting Solicited Local Reactogenicity
17; 5; 2; 0; 0; 0
PRIMARY
Number and Percentage of Participants Reporting Solicited Systemic Reactogenicity
6; 8; 1; 1; 0; 0
PRIMARY
Number and Percentage of Participants With Unsolicited Adverse Events
7; 7
PRIMARY
Number and Percentage of Participants With Serious Adverse Events (SAEs)
0; 0; 0; 0
SECONDARY
Number and Percentage of Subjects With Seroconversion Against Each of the 3 Antigens
28; 0; 25; 0; 23; 0
SECONDARY
Number and Percentage of Seroprotected Subjects Against 3 Strains of Influenza Vaccine
29; 6; 29; 16; 28; 0
SECONDARY
Geometric Mean Titers (GMTs) of Serum Hemaggluntination Inhibition (HAI) Antibodies for Each Antigen
10.0; 10.6; 371.9; 10.7; 39.5; 35.6
SECONDARY
Geometric Mean Fold Rises (GMFRs) of Serum Hemaggluntination Inhibition (HAI) Antibodies
37.2; 1; 16.2; 1.0; 7.7; 1.0
SECONDARY
Geometric Mean Neutralization Titers of Neutralizing Antibodies (MNT) Pre- (Day 1) and Post-Vaccination (Day 22) for Each of the 3 Antigens
8.7; 10.8; 417.4; 10.5; 38.6; 40.0
SECONDARY
Geometric Fold Rises (GMFRs) of Neutralizing Antibodies (MNT) Post-vaccination/Pre-vaccination for Each of the 3 Antigens
47.9; 1.0; 12.4; 1.0; 17.3; 1.0

Summary

This is a phase I, double-blind, randomized, placebo-controlled trial with two groups of subjects to receive seasonal trivalent inactivated split virion influenza vaccine (A/H1N1; A/H3N2 and B strains) or placebo (phosphate buffered saline). A total of 60 healthy male and female adults 18 through 45 years of age will be randomized to receive vaccine (30) or placebo (30).

Eligibility Criteria

Inclusion Criteria

  • Male or female adult 18 through 45 years of age at the enrollment visit.
  • Literate (by self-report) and willing to provide written informed consent.
  • Healthy, as established by the medical history, physical examination, and screening laboratory evaluations.
  • 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 (e.g., intrauterine device, hormonal contraception, condoms) through the Day 22 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 4 weeks prior to enrollment or refusal to postpone receipt of such vaccines until after the Day 22 visit.
  • Current or recent (within 2 weeks of enrollment) acute illness with or without fever.
  • Receipt of immune globulin or other blood products within 3 months prior to study enrollment or planned receipt of such products prior to the Day 22 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.
  • Suspected or known hypersensitivity to any of the study vaccine components, including chicken or egg protein, antibiotics, and rubber (from the vaccine vial stoppers).
  • 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.
  • Confirmed hepatitis B virus (HBV) or hepatitis C virus (HCV) infection
  • Known human immunodeficiency virus (HIV) infection (self-report).
  • Known active tuberculosis or symptoms of active tuberculosis, regardless of cause (self-report).
  • 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.

Note: Minor out-of-range laboratory values no greater than Grade 1 will not be considered to be exclusionary at screening.

View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT02598089). 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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