Safety and immunogenicity of H1N1 vaccines in adults aged 18 years and older
Trial overview
Number of subjects seropositive for haemagglutination inhibition (HI) antibodies against the A/California virus strain
Timeframe: At Day 0
Number of subjects seropositive for haemagglutination inhibition (HI) antibodies against the A/California virus strain
Timeframe: At Day 21
Number of subjects seropositive for (HI) antibodies against the A/California virus strain
Timeframe: At Day 0
Number of subjects seropositive for (HI) antibodies against the A/California virus strain
Timeframe: At Day 21
Number of seroconverted (SCR) subjects for haemagglutination inhibition (HI) antibodies against A/California virus strain
Timeframe: At Day 21
Number of seroconverted (SCR) subjects for HI antibodies against A/California strain
Timeframe: At Day 21
Number of seroprotected (SPR) subjects for HI antibodies against A/California virus strain
Timeframe: At Day 0
Number of seroprotected (SPR) subjects for HI antibodies against A/California virus strain
Timeframe: At Day 21
Number of seroprotected (SPR) subjects for HI antibodies against A/California strain
Timeframe: At Day 0
Number of seroprotected (SPR) subjects for HI antibodies against A/California strain
Timeframe: At Day 21
Seroconversion factor (SCF) for haemagglutination inhibition (HI) antibodies against A/California virus strain
Timeframe: At Day 21
Seroconversion factor (SCF) for HI antibodies against A/California strain
Timeframe: At Day 21
Number of subjects seropositive for HI antibodies against A/California virus strain
Timeframe: At Days 0 and 21
Titers for HI antibodies against A/California strain
Timeframe: At Days 0 and 21
Number of seroconverted (SCR) subjects for HI antibodies against A/California virus strain
Timeframe: At Day 21
Number of seroprotected (SPR) subjects against HI antibodies for the A/California virus strain
Timeframe: At Days 0 and 21
Seroconversion factor (SCF) for HI antibodies against A/California virus strain
Timeframe: At Day 21
Number of subjects seropositive for HI antibodies against the A/California virus strain
Timeframe: At Days 0 and 42
Titers for HI antibodies against the A/California virus strain
Timeframe: At Days 0 and 42
Number of seroconverted (SCR) subjects for HI antibodies against A/California virus strain
Timeframe: At Day 42
Number of seroprotected (SPR) subjects for HI antibodies against A/California strain
Timeframe: At Days 0 and 42
Seroconversion factor (SCF) for HI antibodies against A/California virus strain
Timeframe: At Day 42
Number of subjects seropositive for HI antibodies against the A/California virus strain
Timeframe: At Days 0 and 182
Titers for HI antibodies against the A/California virus strain
Timeframe: At Days 0 and 182
Number of seroconverted (SCR) subjects for HI antibodies
Timeframe: At Day 182
Number of seroprotected (SPR) subjects for HI antibodies against A/California virus strain
Timeframe: At Days 0 and 182
Seroconversion factor (SCF) for HI antibodies against A/California virus strain
Timeframe: At Day 182
Adjusted Geometric mean titer (GMT) ratios of A/California virus strain
Timeframe: At Day 21
Adjusted Geometric mean titer (GMT) ratios of A/California strain
Timeframe: At Day 21
Adjusted GMT ratios of A/California virus strain
Timeframe: At Day 21
Adjusted GMT ratios of A/California strain
Timeframe: At Day 21
Adjusted GMT ratios for A/California virus strain
Timeframe: At Day 21
Adjusted GMT ratios for A/California strain
Timeframe: At Day 21
Number of subjects with any and Grade 3 solicited local symptoms
Timeframe: During the 7-day (Days 0-6) post-vaccination period following each dose and across doses, for subjects between 18-64 years of age
Number of subjects with any and Grade 3 solicited local symptoms
Timeframe: During the 7-day (Day 0-6) post-vaccination period following each dose and across doses, for subjects > 64 years of age
Number of subjects with any, Grade 3 and related solicited general symptoms
Timeframe: During the 7-day (Day 0-6) post-vaccination period following each dose and across doses, for subjects between 18-64 years of age
Number of subjects with any, Grade 3 and related solicited general symptoms
Timeframe: During the 7-day (Day 0-6) post-vaccination period following each dose and across doses, for subjects > 64 years of age
Number of subjects with any and Grade 3 solicited local symptoms
Timeframe: During the 7-day (Days 0-6) post-Dose 3 vaccination period, for subjects > 60 years of age
Number of subjects with any and Grade 3 solicited general symptoms
Timeframe: During the 7-day (Days 0-6) post-Dose 3 vaccination period, for subjects > 60 years of age
Number of subjects with abnormal biochemical and haematological levels
Timeframe: At Days 7, 21, 28, 42 and 182, for subjects between 18-64 years of age
Number of subjects with abnormal biochemical and haematological levels
Timeframe: At Days 7, 21, 28, 42 and 182, for subjects > 64 years of age
Number of subjects with any medically-attended adverse events (MAEs)
Timeframe: Days 0 to 385
Number of subjects reporting any potential immune-mediated diseases (pIMDs)
Timeframe: Days 0 to 365
Number of subjects with any unsolicited adverse events (AEs)
Timeframe: Within the 42-day (Days 0-41) post-vaccination period
Number of subjects with any unsolicited adverse events (AEs)
Timeframe: Within the 84-day (Days 0-83) post-vaccination period
Number of subjects with serious adverse events (SAEs)
Timeframe: During the entire study period (from Day 0 to Day 385)
- Subjects who the investigator believes can and will comply with the requirements of the protocol.
- Written informed consent obtained from the subject.
- Medical history of physician-confirmed infection with an A/California/7/2009 (H1N1)v-like virus
- Previous vaccination at any time with an H1N1v-like virus vaccine or a medical history of physician-confirmed infection with an H1N1v-like virus.
- Written informed consent obtained from the subject.
- Male and female adults, >= 18 years of age at the time of the first vaccination.
- Safety laboratory test results within the parameters specified in the protocol.
- Satisfactory baseline medical assessment by history and physical examination.
- Comprehension of the study requirements, ability to comprehend and comply with procedures for collection of safety data, expressed availability for the required study period, and ability and willingness to attend scheduled visits as documented by signature on the informed consent document.
- Access to a consistent means of telephone contact, which may be either in the home or at the workplace, land line or mobile, but NOT a pay phone or other multiple-user device.
- Female subjects of non-childbearing potential may be enrolled in the study.
- Female subjects of childbearing potential may be enrolled in the study, if the subject:
- has practiced adequate contraception for 30 days prior to vaccination, and
- has a negative pregnancy test on the day of first vaccination, and
- has agreed to continue adequate contraception during the entire treatment period and for 2 months after completion of the vaccination series.
Subjects who the investigator believes can and will comply with the requirements of the protocol.
- Previous vaccination at any time with an H1N1v-like virus vaccine or a medical history of physician-confirmed infection with an H1N1v-like virus.
- Presence of evidence of substance abuse or of neurological or psychiatric diagnoses which, even if stable, are deemed by the investigator to render the potential subject unable/unlikely to provide accurate safety reports.
- Presence of a temperature >= 38.0ºC (>=100.4ºF), or acute symptoms greater than “mild” severity on the scheduled date of first vaccination.
- Diagnosed with cancer, or treatment for cancer, within 3 years.
- Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required).
- Receipt of systemic glucocorticoids within 1 month prior to study enrollment, or any other cytotoxic or immunosuppressive drug within 6 months of study enrollment. Topical, intra-articularly injected, or inhaled glucocorticoids, topical calcineurin inhibitors or imiquimod are allowed.
- Receipt of any immunoglobulins and/or any blood products within 3 months of study enrollment or planned administration of any of these products during the study period.
- Any significant disorder of coagulation or treatment with warfarin derivatives or heparin. Persons receiving individual doses of low molecular weight heparin outside of 24 hours prior to vaccination, are eligible. Persons receiving prophylactic antiplatelet medications, e.g., low-dose acetylsalicylic acid, and without a clinically-apparent bleeding tendency, are eligible.
- An acute evolving neurological disorder or history of Guillain-Barré syndrome within 6 weeks of receipt of seasonal influenza vaccine
- With the exception of seasonal influenza vaccination, administration of any vaccine(s) within 30 days before study vaccination on Day 0. Seasonal influenza vaccine may be administered up to 14 days prior to study vaccination on Day 0.
- Planned administration of any vaccine not foreseen by the study protocol between Day 0 and the Day 42 phlebotomy, including seasonal influenza vaccine or a monovalent pandemic H1N1 vaccine other than the study vaccines.
- Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days preceding the first dose of study vaccine/product, or planned use during the study period.
- Any known or suspected allergy to any constituent of influenza vaccines; a history of anaphylactic-type reaction to any constituent of influenza vaccines; or a history of severe adverse reaction to a previous influenza vaccine.
- Known pregnancy or a positive urine beta-human chorionic gonadotropin test result prior to the first vaccination.
- Lactating or nursing women.
Medical history of physician-confirmed infection with an A/California/7/2009 (H1N1)v-like virus
Trial location(s)
Study documents
If you wish to request for full study report, please contact - [email protected]
Results overview
Results posted on ClinicalTrials.gov
Plain language summaries
Plain language summaries of clinical trial results for Phase 2-4 clinical trials that were initiated on or after January 2022 will be posted by GSK within one year following study completion.