Immunogenicity and Safety Study of a GSK Influenza Vaccine Candidate in Adults.

GlaxoSmithKline420 enrolled

Overview

The purpose of this study is to evaluate the safety and immunogenicity of GSK influenza vaccine candidate compared to a licensed trivalent influenza vaccine in adults.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Enrollment

420

Conditions

Influenza

Interventions

GSK Biologicals' quadrivalent influenza vaccineBIOLOGICAL

Single intramuscular dose on Day 0.

GSK Biologicals' trivalent influenza vaccineBIOLOGICAL

Single intramuscular dose on Day 0.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 60 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Healthy subjects as established by medical history and clinical examination before entering into the study. * Subjects who the investigator believes can and will comply with the requirements of the protocol should be enrolled in the study. * A male or female between, and including, 18 and 60 years of age at the time of the vaccination. * Written informed consent obtained from the subject. * If the subject is female, she must be of non-childbearing potential, 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 preceding the administration of study vaccine, or planned use during the study period. * Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs within 3 months prior to administration of the vaccine. * Administration of a vaccine not foreseen in the study protocol from 30 days before vaccination up to 21 days post vaccination. * Confirmed influenza infection within a year preceding the study start. * Administration of an influenza vaccine during Northern Hemisphere season 2007-2008. * Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product (pharmaceutical product or device). * History of hypersensitivity to a previous dose of influenza vaccine * Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination. * History of allergic disease or reactions likely to be exacerbated by any component of the vaccine(s). * Acute disease at the time of enrolment. * Acute or chronic, clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by physical examination or laboratory screening tests. * Administration of immunoglobulins and/or any blood products within the three months preceding the administration of study vaccine or planned administration during the study period. * Pregnant or lactating female. * Female planning to become pregnant or planning to discontinue contraceptive precautions. * History of chronic alcohol consumption and/or drug abuse. * Any condition which, in the opinion of the investigator, prevents the subject from participating in the study. * History of administration of experimental/licensed vaccine.

Locations (1)

GSK Investigational Site

Hradec Králové, Czechia

Outcomes

Primary Outcomes

Serum Haemagglutination-inhibition (HI) Antibody Titers, Against Each of the Vaccine Influenza Virus Strains.

Antibody titers were expressed as Geometric mean titers (GMTs).The vaccine influenza strains included A/Solomon Islands,A/Wisconsin,B/Malaysia and B/Jiangsu antigens.

Time frame: At Day 0 and Day 21

Secondary Outcomes

Number of Subjects Seroconverted for HI Antibodies Against the Vaccine Influenza Strains.

A seroconverted subject was defined as a subject who had either a pre-vaccination titer less than (\<) 1:10 and a post-vaccination titer greater than or equal to (≥) 1:40 or a pre-vaccination titer ≥ 1:10 and at least a four-fold increase in post-vaccination titer. The vaccine influenza strains included A/Solomon Islands, A/Wisconsin, B/Malaysia and B/Jiangsu antigens.

Time frame: At Day 21

HI Antibody Seroconversion Factors Against the Vaccine Influenza Strains

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

Time frame: Day 21

Number of Subjects Seroprotected for HI Antibodies Against the Vaccine Influenza Strains.

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

Time frame: At Days 0 and 21

Number of Subjects Reporting Any and Grade 3 Solicited Local Symptoms.

Solicited local symptoms assessed were pain, redness and swelling. Any was defined as occurrence of any specified solicited local symptoms reported irrespective of intensity grade. Grade 3 pain was defined as considerable pain that prevented normal activity. Grade 3 redness and swelling were defined as redness/swelling above 100 millimeters (mm).

Data from ClinicalTrials.gov

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

Number of Subjects With Any and Grade 3 Solicited Local Symptoms Reported by the Former GSK Rules of Grading.

Solicited local symptoms assessed by the former GSK rules of grading were pain, redness and swelling. Any was defined as occurrence of any specified solicited local symptoms reported irrespective of intensity grade. Grade 3 pain was defined as pain that prevented normal activity. Grade 3 redness and swelling were defined as redness/swelling above 50 millimeters (mm).

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

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

Solicited general symptoms assessed were arthralgia, fatigue, headache, myalgia, nausea, shivering and fever. Any =occurrence of any specified solicited general symptoms reported irrespective of intensity grade or relationship to vaccination. Any fever = oral temperature ≥ 38.0 degrees Celsius (°C).. Grade 3 symptoms = symptoms that prevented normal activities. Grade 3 fever = oral temperature ≥39.0°C. Related = symptoms considered by the investigator to have a causal relationship to vaccination

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

Number of Subjects With Any ,Grade 3 and Related Solicited General Symptoms Reported by the Former GSK Rules of Grading.

Solicited general symptoms assessed by the former GSK rules of grading were arthralgia, fatigue, headache, myalgia, nausea, shivering and fever. Any = occurrence of any specified solicited general symptoms reported irrespective of intensity grade or relationship to vaccination. Any fever = oral temperature ≥ 37.5 °C. Grade 3 symptoms = symptoms that prevented normal activities. Grade 3 fever = oral temperature above 39.0°C. . Related = symptoms considered by the investigator to have a causal relationship to vaccination.

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

Number of Subjects Reporting Any Medically Significant Conditions (MSCs) and Auto-immune Diseases (AIDs).

MSCs were defined as those adverse events (AEs) prompting emergency room visits, hospitalizations or physician visits and that were not routine visits for physical examination or vaccination. AIDs include a large group of diseases characterized by abnormal functioning of the immune system that causes immune system to produce antibodies against own tissues.

Time frame: During the entire study period (Days 0-180)

Number of Subjects Reporting Any, Grade 3 and Related Unsolicited AE(s).

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 (Days 0-20) follow-up period after vaccination-

Number of Subjects Reporting Any and Related Serious Adverse Events (SAEs)

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: During the entire study period (Days 0-180)