Phase 1b Influenza Vaccine Study in Healthy Subjects

October 14, 2010 updated by: PepTcell Limited

A Single Centre, Randomised, Double Blind, Phase 1 Study of the Safety, Tolerability, and Immunogenicity of an Influenza Vaccine Candidate (FLU-v)

The purpose of this study is to see whether a single vaccination (injection) with the investigational influenza vaccine is safe in healthy subjects. The study is also designed to evaluate four different dose formulations of the vaccine to see which gives the best immune response.

Study Overview

Status

Completed

Conditions

Detailed Description

Prophylactic vaccination against influenza is indicated for "at risk" populations including patients suffering from chronic respiratory diseases (including asthma), chronic heart disease, chronic renal failure, diabetes mellitus and immunosuppression due to disease or treatment. Vaccination of the elderly (>65 years) and the residents of nursing homes is also recommended. The current influenza vaccines available contain subunits from two influenza A viruses and an influenza B virus and consist either of inactivated whole virus or subunits of haemagglutinin and neuraminidase.

The investigational influenza vaccine (FLU-v) contains multiple highly conserved T cell epitopes that are present on most influenza viruses, which have been identified as reactive in different human leukocyte antigen (HLA) populations; thus making it unlikely that anybody in the vaccinated population would be unable to mount an immune response to at least one of the epitopes contained in the vaccine.

This study will be the initial exploration of FLU-v in humans, and aims to assess the safety, tolerability, and immunogenicity in healthy subjects.

Subjects will be randomised to receive either Low Dose or High Dose FLU-v with or without adjuvant, or placebo with or without adjuvant. Twenty-four (24) subjects will be randomized to Low Dose and 24 subjects to High Dose. To mitigate risk, a staggered dosing approach will be used. One subject will receive Low Dose FLU-v without adjuvant, and one subject will receive placebo without adjuvant, followed 6 hours later by one subject receiving Low Dose FLU-v with adjuvant, and one subject receiving placebo with adjuvant. All 4 subjects will be observed overnight. At least 72 hours later and in the absence of any clinically-significant safety signals (as determined by a Safety Review Committee) the remaining 20 subjects of the Low Dose group will be dosed. If deemed appropriate by the Safety Review Committee a second sentinel cohort of 4 subjects will be observed overnight prior to completing the remaining subjects of the Low Dose group. Following a satisfactory review of safety data from the combined Low Dose cohorts, subjects in the High Dose group will be vaccinated using the same staggered dosing approach as used in Low Dose.

Study Type

Interventional

Enrollment (Anticipated)

48

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • London, United Kingdom, SE1 1YR
        • Quintiles Drug Research Unit at Guy's Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 40 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Subject must have a BMI >18.5 and ≤ 28.5 kg/m2.
  • Subject must have no clinically significant abnormal findings, as judged by the Investigator, on the physical examination, ECG, medical history or clinical laboratory results during screening.
  • Subject must be a non-user of tobacco products, or smoke ≤ 10 cigarettes per day (minimum 6 months prior to first dose).
  • Subject must have a negative urine screen for drugs of abuse and a negative alcohol breath test at screening and check-in.
  • Subject must refrain from consuming alcohol for 72 hours prior to each dose.
  • Subject must be able to communicate well with the Investigator, to understand and comply with the requirements of the study, and be judged suitable for the study in the opinion of the Investigator.
  • Subject must give voluntary written informed consent to participate in this trial.

Exclusion Criteria:

  • Subject must not have previous influenza vaccination within the 12 months prior to test drug vaccination.
  • Subject must not have had an influenza like illness within the 3 months prior to test drug vaccination.
  • Subject must not have a history or presence of significant neurological, cardiovascular, pulmonary (including asthma), hepatic, metabolic, rheumatic, autoimmune, haematological or renal disorder.
  • Subject must not have an oral temperature >38°C on day of vaccination (otherwise subject maybe be re-assigned to a subsequent cohort).
  • Subject must not suffer from an inherited or acquired immunodeficiency.
  • Subject must not suffer from a disease or be undergoing treatment that can affect immune response such as systemic or high dose inhaled corticosteroids (>800µg/day beclometasone or equivalent), radiation treatment, cytotoxic drugs or non-steroidal anti-inflammatory drugs.
  • Subject must not have a serologically positive test for human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg) or hepatitis C virus (HCV).
  • Subject must not have a history of severe allergic reactions and/or anaphylaxis.
  • Subject must not have any arm rash or tattoos which could confound the interpretation of any injection site reactions.
  • Subject must not have participated in a previous clinical trial within 90 days prior to the first vaccination.
  • Subject must not have donated blood or plasma more within 90 days prior to the first vaccination.
  • Subject must not have donated bone marrow within 6 months prior to the first dose.
  • Subject must not have received administration of immunoglobulins and/or any blood products within 90 days prior to the first vaccination, or any planned administration during the study period.
  • Subject must not use any prescription medication within 14 days prior to the first vaccination.
  • Subject must not use over-the-counter (OTC) medication 7 days prior to the first vaccination. Exceptions are described below under the heading 9.4.1.
  • Subject must not have received any vaccine within the 30 days prior to the first dose, and must agree not to receive any other vaccine (other than any vaccine indicated for standard of care, for example, tetanus vaccine) for the duration of this study i.e 21 days post initial FLU-v vaccination.
  • Subject must not have a history of alcohol or drug abuse within 2 years prior to the first dose.
  • Subject must not have any condition which, in the judgement of the Investigator, precludes inclusion into the study.
  • Subjects must not donate sperm up to 90 days postdose, and those whose partner is of child-bearing potential will be advised to remain sexually inactive or use a dual method of birth control (e.g. condom together with spermicidal agent, IUD or hormonal contraception) for at least 90 days postdose.
  • Subject must not be a direct employee of the study site, monitoring CRO or Sponsor.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: PREVENTION
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: QUADRUPLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Group 2

FLU-v Low Dose with adjuvant. FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection.

10 subjects.

Comparison of different dosages of FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection of (Low Dose / High Dose with adjuvant / water for injection)
Other Names:
  • FLU-v
EXPERIMENTAL: Group 3

FLU-v High Dose with water for injection. FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection.

10 subjects.

Comparison of different dosages of FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection of (Low Dose / High Dose with adjuvant / water for injection)
Other Names:
  • FLU-v
EXPERIMENTAL: Group 4
High Dose FLU-v with adjuvant FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection. 10 subjects
Comparison of different dosages of FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection of (Low Dose / High Dose with adjuvant / water for injection)
Other Names:
  • FLU-v
EXPERIMENTAL: Group 1
FLU-v Low Dose with water for injection FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection 10 subjects
Comparison of different dosages of FLU-v (sterile lyophilised mixture of polypeptide T-cell epitope sequences). Administration: A single subcutaneous injection of (Low Dose / High Dose with adjuvant / water for injection)
Other Names:
  • FLU-v
PLACEBO_COMPARATOR: Control Group
Placebo with adjuvant (4 subjects) or Placebo without adjuvant (4 subjects)
Adjuvant only or water for injection only Administration: a single subcutaneous injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Safety and tolerability of FLU-v
Time Frame: Measurements will be taken at screening, then up to 21 days post-vaccination
The safety and tolerability of two dose levels of FLU-v and the effect of the adjuvant on the safety and tolerability of FLU-v will be assessed by, Clinical signs and symptoms from physical exam and ECG; Adverse events (including local and systemic AEs); Laboratory safety (haematology, serum clinical chemistry, urinalysis); and Vital signs (blood pressure, heart rate, temperature, respiratory rate)
Measurements will be taken at screening, then up to 21 days post-vaccination

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Immunogenicity of FLU-v
Time Frame: Measurements will be taken on Days 1 and 21 post-vaccination
The immunogenicity of FLU-v with and without adjuvant will be measured by Serum IgG2 (assessed by enzyme-linked immunosorbant assay (ELISA)) and IFN-γ in isolated peripheral blood mononuclear cells (PBMC).
Measurements will be taken on Days 1 and 21 post-vaccination

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Director: Stuart Robinson, Dr, PepTcell Limited

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2010

Primary Completion (ACTUAL)

July 1, 2010

Study Completion (ACTUAL)

July 1, 2010

Study Registration Dates

First Submitted

August 12, 2010

First Submitted That Met QC Criteria

August 12, 2010

First Posted (ESTIMATE)

August 13, 2010

Study Record Updates

Last Update Posted (ESTIMATE)

October 15, 2010

Last Update Submitted That Met QC Criteria

October 14, 2010

Last Verified

October 1, 2010

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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