Immunogenicity and Safety Study to Evaluate Different Formulations of GSK Biologicals' Influenza Vaccine GSK576389A

GlaxoSmithKline2,007 enrolled

Overview

In order to find the formulation leading to a maximal increase of the immune response while maintaining an acceptable safety profile, this study is designed to evaluate the immunogenicity, safety and reactogenicity of the different formulations of GSK Biologicals' influenza vaccine administered in adults aged 65 years and older compared to Fluarix.

There are 10 parallel groups: 9 observer blinded groups with subjects 65 years and older receiving an investigational vaccine or Fluarix, and 1 open group with subjects between 18 and 40 years old receiving Fluarix. CMI response will be determined for a subset only. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

DOUBLE

Enrollment

2,007

Conditions

Influenza

Interventions

GlaxoSmithKline Biologicals' influenza vaccine GSK576389ABIOLOGICAL

Single dose, Intramuscular injection, 8 different formulations were tested (one per group)

FluarixBIOLOGICAL

Single dose, Intramuscular injection

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Subjects who the investigator believes that they can and will comply with the requirements of the protocol should be enrolled in the study. * A male or female aged 18-40 years old or 65 years or older at the time of the vaccination. * Written informed consent obtained from the subject. * Free of an acute aggravation of the health status as established by clinical evaluation (medical history and medical history directed examination) before entering into the study. * If the subject is female, she must be of non-childbearing potential or if she is of childbearing potential, she must practice adequate contraception for 30 days prior to vaccination, have a negative pregnancy test and continue such precautions for 2 months after completion of the vaccination series. Exclusion Criteria: * Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days prior to vaccination, or planned use during the study period. * Administration of other licensed vaccines within 2 weeks (for inactivated vaccines) or 4 weeks (for live vaccines) prior to enrolment in this study. * Planned administration of a vaccine not foreseen by the study protocol during the entire study period. * Planned administration of an influenza vaccine other than the study vaccines during the entire study period. * Vaccination against influenza since January 2007 (with 2007/2008 or 2006/2007 influenza vaccine). * Administration of more than 14 days of immunosuppressants or other immune-modifying drugs within 6 months prior to the administration of the study vaccine. * Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination * Hypersensitivity to a previous dose of influenza vaccine. * Allergy to any component of the vaccine. * Acute (active) clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality. * Acute disease at the time of enrolment. (Acute disease is defined as the presence of a moderate or severe illness with or without fever. All vaccines can be administered to persons with a minor illness such as diarrhoea, mild upper respiratory infection with or without low-grade febrile illness, i.e. axillary temperature\<37.5ºC (99.5ºF). * Administration of immunoglobulins and/or any blood products within the three months preceding the first administration of the study vaccine or planned administration during the study. * Any medical conditions in which IM injections are contraindicated. * Lactating female or female planning to become pregnant or to discontinue contraceptive precautions

Locations (30)

Outcomes

Primary Outcomes

Haemagglutination Inhibition (HI) Antibody Titers

Antibody titers were expressed as Geometric mean titers (GMTs) against each of the 3 vaccine strains in greater than or equal to 65 years age groups only. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 21

Secondary Outcomes

HI Antibody Titers at Day 0 and Day 21

Antibody titers were expressed as GMTs in all the vaccine groups. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 0 and 21

HI Antibody Titers at Day 180

Antibody titers were expressed as GMTs in all the vaccine groups. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 180

The Number of Subjects Seroconverted to HI Antibodies at Day 21

A seroconverted subject was defined as a subject who had either a pre-vaccination titer below 1:10 and a post-vaccination titer greater than or equal to 1:40 or a pre-vaccination titer greater than or equal to 1:10 and at least a 4-fold increase in post-vaccination titer. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 21

The Number of Subjects Seroconverted to HI Antibodies at Day 180

Time frame: At Day 180

Data from ClinicalTrials.gov

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GSK Investigational Site

Güglingen, Baden-Wurttemberg, Germany

GSK Investigational Site

Mannheim, Baden-Wurttemberg, Germany

GSK Investigational Site

Rudersberg, Baden-Wurttemberg, Germany

GSK Investigational Site

Weinheim, Baden-Wurttemberg, Germany

GSK Investigational Site

Augsburg, Bavaria, Germany

GSK Investigational Site

Cologne, North Rhine-Westphalia, Germany

GSK Investigational Site

Essen, North Rhine-Westphalia, Germany

GSK Investigational Site

Mainz, Rhineland-Palatinate, Germany

GSK Investigational Site

Rhaunen, Rhineland-Palatinate, Germany

GSK Investigational Site

Dresden, Saxony, Germany

...and 20 more locations

HI Antibody Seroconversion Factors at Day 21

Seroconversion factors were defined as the fold increase in serum HI GMTs post-vaccination compared to Day 0. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 21

HI Antibody Seroconversion Factors at Day 180

Seroconversion factors were defined as the fold increase in serum HI GMTs post-vaccination compared to Day 0. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 180

The Number of Subjects Seroprotected to HI Antibodies at Day 0 and 21

A seroprotected subject was defined as a subject with a serum HI titer greater than or equal to 1:40 that usually is accepted as indicating protection. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 0 and 21

The Number of Subjects Seroprotected to HI Antibodies at Day 180

Time frame: At Day 180

The Geometric Mean (GM) Number of Influenza-specific CD4 T-cells Per Million CD4+ T-cells for Each Vaccine Strain Producing at Least Two Different Immune Markers or Producing Each of the Immune Markers Plus Another Immune Marker at Days 0 and 21

The markers assessed were Cluster of Differentiation 4-All doubles i.e. CD4-All doubles, CD4-CD40Ligand(L), CD4-interferon gamma (CD4-IFNγ), CD4-interleukin 2 (CD4-IL2) and CD4-tumor necrosis factor alpha (CD4-TNFα). The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Days 0 and 21

The GM Number of Influenza-specific CD4 T-cells Per Million CD4+ T-cells for Each Vaccine Strain Producing at Least Two Different Immune Markers or Producing Each of the Immune Markers Plus Another Immune Marker at Day 180

The markers assessed were CD4-All doubles, CD4-CD40L, CD4-IFNγ, CD4-IL2 and CD4-TNFα. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 180

The GM Number of Influenza-specific CD8 T-cells Per Million CD8+ T-cells for Each Vaccine Strain Producing at Least Two Different Immune Markers or Producing Each of the Immune Markers Plus Another Immune Marker at Days 0 and 21

The markers assessed were Cluster of Differentiation 8-All doubles i.e. CD8-All doubles, CD8-CD40L, CD8-IFNγ, CD8-IL2 and CD8-TNFα. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Days 0 and 21

The markers assessed were CD8-All doubles, CD8-CD40L, CD8-IFNγ, CD8-IL2 and CD8-TNFα. The vaccine strains included A/Solomon Islands, A/Wisconsin and B/Malaysia antigens.

Time frame: At Day 180

Number of Subjects Reporting Any and Grade 3 Solicited Local Adverse Events (AEs)

Grade 3 ecchymosis, pain, redness and swelling was greater than 100 millimeter (mm) i.e. \> 100 mm and grade 3 pain was considerable pain at rest that prevented normal everyday activities. Any was occurrence of any local symptom regardless of their intensity grade. Any for ecchymosis, redness and swelling was \>20mm.

Time frame: During a 7-day follow-up period (Day 0-6) after vaccination

Duration of Solicited Local AEs

Duration was defined as number of days with any grade of local symptoms.

Time frame: During a 7-day follow-up period (Day 0-6) after vaccination

Number of Subjects Reporting Any, Grade 3 and Related Solicited General AEs

Any Fever was defined as axillary temperature greater than or equal to 38.0 degree centigrade i.e.≥ 38.0°C, grade 3 fever was axillary temperature \>40°C. For other symptoms, any was defined as occurrence of any general symptom regardless of intensity grade or relation to vaccination and grade 3 was defined as a general symptom that prevented normal activity. Related was a general symptom assessed by the investigator as causally related to the study vaccination.

Time frame: During a 7-day follow-up period (Day 0-6) after vaccination

Duration of Solicited General AEs

Duration was defined as number of days with any grade of general symptoms.

Time frame: During a 7-day follow-up period (Day 0-6) after vaccination

Number of Subjects Reporting Any, Grade 3 and Related Unsolicited AEs

Unsolicited AE covers any AE reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any was defined as occurrence of any unsolicited symptom regardless of intensity grade or relation to vaccination. Grade 3 was an event that prevented normal activities and related was defined as an unsolicited AE assessed by the investigator to be causally related to the study vaccination.

Time frame: During a 21-day follow-up period (Day 0-20) after vaccination

Number of Subjects Reporting Any, Grade 3 and Related Adverse Events Resulting in Medically Attended Visit Between Day 0 and Day 20

For each solicited and unsolicited AE the subject experienced, the subject was asked if they had received medical attention defined as hospitalization, an emergency room visit or a visit to or from medical personnel (medical doctor) for any reason. Any was defined as occurrence of any symptom regardless of intensity grade or relation to vaccination and grade 3 was defined as a symptom that prevented normal activity. Related was a symptom assessed by the investigator as causally related to the study vaccination.

Time frame: Between Day 0 and Day 20 after vaccination

Number of Subjects Reporting Any, Grade 3 and Related Adverse Events Resulting in Medically Attended Visit Between Day 21 and Day 179

Time frame: Between Day 21 and Day 179 after vaccination

Number of Subjects Reporting Any and Related Serious Adverse Events (SAEs) Between Day 0 and Day 20

SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject. Any was defined as occurrence of any symptom regardless of intensity grade or relation to vaccination and related was an event assessed by the investigator as causally related to the study vaccination.

Time frame: Between Day 0 and Day 20 after vaccination

Number of Subjects Reporting Any and Related Serious Adverse Events (SAEs) Between Day 21 and Day 179

Time frame: Between Day 21 and Day 179 after vaccination