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Phase 2 N=153 Randomized Quadruple-blind Prevention

Efficacy of FLU-v in an H1N1 Influenza Human Challenge Model

Influenza

Enrolled (actual)
153
Serious AEs
0.0%
Results posted
May 2019
Primary outcome: Primary: Number of Participants With Mild to Moderate Influenza Disease (MMID) — 23; 13; 15; 19 Participants — p=0.03

Study Design & Population

Study type
Interventional
Phase
Phase 2
Interventions
adjuvanted FLU-v (Biological); adjuvanted placebo (Biological); Influenza challenge (Other)
Age
Adult · 18+ yrs
Sex
All
Sponsor
PepTcell Limited
Primary completion
Mar 2017

Outcome Measures

OutcomeResultp-value
PRIMARY
Number of Participants With Mild to Moderate Influenza Disease (MMID)
23; 13; 15; 19; 27; 26 0.03 sig
PRIMARY
Number of Treatment Emergent Adverse Events (TEAEs) Per Subject.
1.86; 1.38; 2.35; 1.00; 0.81; 1.51 0.647
PRIMARY
Number of Subjects With Treatment Emergent Adverse Event Classified by Relatedness and Severity.
7; 24; 29; 1; 0; 6
SECONDARY
Number of Subjects With Detectable Viral Shedding and Number of Subjects With Recorded Influenza Symptoms During the Quarantine Period.
37; 34; 30; 27; 16; 23 0.465
SECONDARY
Viral Shedding Duration
1.95; 1.20; 1.90 0.0501
SECONDARY
Total Viral Shedding (Area Under the Curve)
153.67; 98.47; 138.79 0.102
SECONDARY
Peak Viral Load
2.24; 1.54; 2.28 0.128
SECONDARY
Duration of Influenza Symptoms
3.26; 2.67; 2.76 0.142
SECONDARY
Number of Symptoms Experienced Per Subject Per Day.
2.57; 2.08; 2.51 0.080
SECONDARY
Peak Number of Symptoms Experienced Per Subject in a Single Day.
2.12; 1.68; 1.88 0.099
SECONDARY
Assessment of Self-reported Influenza Symptoms by FLU-PRO Questionnaire.
0.05; 0.03; 0.04 0.064

Summary

FLU-v is a broad spectrum influenza vaccine that targets regions conserved among multiple influenza strains. FLU-v adjuvanted with Montanide ISA-51 was shown to be safe in previous trials. This study aims to assess efficacy of adjuvanted FLU-v vaccine in protecting healthy volunteers against an influenza challenge delivered intranasally under quarantine. Efficacy of FLU-v will be assessed by measuring the incidence and severity of the disease in the treatment groups compared to the placebo group. In addition, the immune responses of the volunteers to FLU-v will also be explored.

Eligibility Criteria

Inclusion Criteria

  • Healthy males and females aged ≥18 and ≤55 years of age at the point of enrolment.
  • Willingness to remain in isolation for the duration of viral shedding and to comply with all study requirements.
  • The following criteria are applicable to subjects in a heterosexual relationship and female subjects in a same sex relationship (i.e., the criteria do not apply to male subjects in a same sex relationship):
  • True abstinence- when this is in line with the preferred and usual lifestyle of the subject. (Periodic abstinence [e.g. calendar, ovulation, symptothermal, post-ovulation methods] and withdrawal are not acceptable methods of contraception).

Or

  • Two forms of effective contraceptive methods among (between) the couple, which are defined as:
  • For males: condom with spermicidal foam/gel/film/cream, sterilisation (with the appropriate post-vasectomy documentation of the absence of sperm in the ejaculate. This applies only to males participating in the study).
  • For females:

Women no longer of child bearing potential (post-menopausal females are defined as having a history of amenorrhea for at least 2 years, otherwise they should have documented status as being surgically sterile or post hysterectomy. The latter applies only to females participating in the study). If of childbearing potential, then acceptable forms of contraception include:

  • Established (a minimum of 2 weeks prior to admission) use of oral, injected or implanted hormonal methods of contraception.
  • Placement of an intrauterine device (IUD) or intrauterine system (IUS).
  • Barrier methods of contraception or occlusive cap (diaphragm or cervical/vault caps), both with one of the following - spermicidal foam/gel/film/cream/suppository.
  • The longevity of contraception is as follows:

Males:

  • Comply with agreed contraception at entry to quarantine, and continuing until 90 days after the date of viral challenge/last dosing with IMP (whichever occurs last).
  • Must not donate sperm following discharge from quarantine until 90 days after the date of viral challenge/last dosing with IMP (whichever occurs last).

Females:

If of childbearing potential must have a negative pregnancy test at screening and just prior to the date of Viral Challenge, and must be using contraception consisting of two forms of birth control (one of which must be a barrier method) starting from at least 2 weeks prior to the first vaccination and continuing until 90 days after the date of Viral Challenge/last dosing with IMP (whichever occurs last).

  • Willing to have samples stored for future research.
  • Sero-suitable to the study challenge virus within 90 days of Day 0.
  • Agrees to abstain from alcohol intake 24 hours before admission on Day -2 or Day -1 and all other outpatient visits.
  • Agrees to not use prescription or over-the-counter medications (including aspirin, decongestants, antihistamines, and other NSAIDs), and herbal medication (including, but not limited to, Vitamin C, Vitamin D, immune booster products, herbal tea, St. John's Wort), within 14 days prior to study vaccine administration through the final follow-up visit, unless approved by the investigator and sponsor medical monitor.
  • An informed consent document signed and dated by the subject and the Investigator or delegate.
  • A history of childhood asthma before the age of 12 years is acceptable provided the subject is asymptomatic without treatment. Subjects with a single episode of wheezing (lasting less than 2 weeks) after the age of 12 years can be included at the Investigator's discretion provided the episode was more than 1 year ago and did not require a hospital admission and/or oral/intravenous steroids.
  • In good health with no history of major medical conditions that will interfere with subject safety, as defined by medical history, physical examination, and routine laboratory tests and determined by the Investigator at a screening evaluation.
  • A subject with a history of Herp
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03180801). 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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