Approval Probability
TA Base Rate
Adjusted LOA
ML Risk
Investigational H7N1 vaccine GSK2789869A · 2 trials · 1 indication
Seroconversion was defined as: For initially seronegative subjects \[antibody titer below (\<) 10 post-vaccination\], antibody titer greater than or equal to (≥) 40 after vaccination; For initially seropositive subjects (antibody titer ≥ 10 prior to vaccination), antibody titer after vaccination ≥ 4 fold the pre-vaccination antibody titer. The Flu strain assessed was A/mallard/Netherlands/12/2000 NIBRG-63 (H7N1) (Flu A/mallard/NL/12/2000 H7N1).
A seroprotected subject was defined as a vaccinated subject with a serum HI titer greater than or equal to (≥) 1:40, that usually is accepted as indicating protection.
GMFR, also known as seroconversion factor (SCR) or mean geometric increase (MGI), was defined as the geometric mean of the within-subject ratios of the post-vaccination reciprocal HI titer to the pre-vaccination (Day 0) reciprocal HI titer for the vaccine virus.
Assessed solicited local symptoms were pain, redness and swelling. Any = occurrence of the symptom regardless of intensity grade. Grade 3 pain = significant pain at rest; prevented normal activities as assessed by inability to attend/do work or school. Grade 3 redness/swelling = redness/swelling spreading beyond 100 millimeters (mm) of injection site.
Assessed solicited general symptoms were fatigue, gastrointestinal symptoms (symptoms included nausea, vomiting, diarrhoea and/or abdominal pain), headache, joint pain at other location, muscle aches, shivering, sweating and fever \[defined as axillary temperature equal to or above (≥) 38 degrees Celsius (°C)\]. Any = occurrence of the symptom regardless of intensity grade or relationship to vaccination. Grade 3 symptom = general symptom that prevented normal everyday activities as assessed by inability to attend/do work or school, or required intervention of a physician/healthcare provider. Grade 3 fever = temperature \> 39.0 °C. Related = symptom assessed by the investigator as related to the vaccination.
Among analysed biochemical parameters were alanine aminotransferase \[ALT\], aspartate aminotransferase \[AST\], basophils \[BAS\], creatinine \[CRE\], eosinophils \[EOS\], hematocrit \[HEM\], hemoglobin \[HgB\], lymphocytes \[LYM\], monocytes \[MON\], neutrophils \[NEU\], platelets \[PLA\], red blood cells \[RBC\] and white blood cells \[WBC\].
MAEs were defined as events for which the subject received medical attention defined as hospitalization, an emergency room visit, or a visit to or from medical personnel (medical doctor) for any reason. Any MAE(s) = Occurrence of any MAE(s) regardless of intensity grade or relation to vaccination.
Any pIMD was defined as an AE including autoimmune diseases and other mediated inflammatory disorders and assessed by the investigator as specific to the treatment administration.
An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product and 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 the occurrence of any unsolicited AE regardless of intensity grade or relation to vaccination.
SAEs assessed include medical occurrences that result in death, are life-threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity.
The following aggregate variables will be calculated: Seroconversion rates (SCR); Seroprotection rates (SPR); Mean Geometric Increase (MGI);
| Arm | Type | Description |
|---|---|---|
| GSK2789869A F1 Group | EXPERIMENTAL | Healthy male and female adults, 65 years of age and older, who received two doses of GSK2789869A H7N1 vaccine Formulation 1 (F1), administered intramuscularly in the deltoid region of the non-dominant arm at Day 0 and of the dominant arm at Day 21. |
| GSK2789869A F2 Group | EXPERIMENTAL | Healthy male and female adults, 65 years of age and older, who received two doses of GSK2789869A H7N1 vaccine Formulation 2 (F2), administered intramuscularly in the deltoid region of the non-dominant arm at Day 0 and of the dominant arm at Day 21. |
| GSK2789869A F3 Group | EXPERIMENTAL | Healthy male and female adults, 65 years of age and older, who received two doses of GSK2789869A H7N1 vaccine Formulation 3 (F3), administered intramuscularly in the deltoid region of the non-dominant arm at Day 0 and of the dominant arm at Day 21. |
| GSK2789869A F4 Group | EXPERIMENTAL | Healthy male and female adults, 65 years of age and older, who received two doses of GSK2789869A H7N1 vaccine Formulation 4 (F4), administered intramuscularly in the deltoid region of the non-dominant arm at Day 0 and of the dominant arm at Day 21. |
| Placebo Group | PLACEBO_COMPARATOR | Healthy male and female adults, 65 years of age and older, who received two doses of Placebo, administered intramuscularly in the deltoid region of the non-dominant arm at Day 0 and of the dominant arm at Day 21. |
| Formulation 1 Group | EXPERIMENTAL | Subjects in this group will receive two doses of GSK2789869A H7N1 vaccine formulation 1 at a 21 day interval |
| Formulation 2 Group | EXPERIMENTAL | Subjects in this group will receive two doses of GSK2789869A H7N1 vaccine formulation 2 at a 21 day interval |
| Formulation 3 Group | EXPERIMENTAL | Subjects in this group will receive two doses of GSK2789869A H7N1 vaccine formulation 3 at a 21 day interval |
| Formulation 4 Group | EXPERIMENTAL | Subjects in this group will receive two doses of GSK2789869A H7N1 vaccine formulation 4 at a 21 day interval |
| Formulation 5 Group | EXPERIMENTAL | Subjects in this group will receive two doses of GSK2789868A H7N1 vaccine formulation 5 at a 21 day interval |
| Name | Type | Description |
|---|---|---|
| Investigational H7N1 vaccine GSK2789869A | BIOLOGICAL | Two doses of GSK2789869A H7N1 vaccine administered intramuscularly to the deltoid region at Day 0 and Day 21. |
| Placebo | BIOLOGICAL | Two doses of placebo administered intramuscularly to the deltoid region at Day 0 and Day 21. |
| Investigational H7N1 vaccine GSK2789868A | BIOLOGICAL | One dose of GSK2789868A H7N1 vaccine administered intramuscularly at the deltoid region of the non-dominant arm at Day 0 while the second dose of GSK2789868A H7N1 vaccine administered intramuscularly at the deltoid region of the dominant arm at Day 21 |
Inclusion Criteria: * Male or female adults who are 65 years of age and older at the time of first study vaccination. * Written informed consent obtained from the subject. * Subjects who the investigator believes can and will comply with the requirements of the protocol. * Stable health status, as ...
GSK2789869A is an investigational H7N1 influenza vaccine being developed for the prevention of influenza. It is a monoclonal antibody-based vaccine candidate studied in adults to evaluate its immunogenicity and safety. The vaccine is currently in clinical development and is not yet approved by regulatory authorities.
GSK2789869A is being developed by GSK plc, a global biopharmaceutical company listed on the London Stock Exchange under the ticker GSK. The company is conducting clinical trials to assess the vaccine's safety and immune response in adult populations.
GSK2789869A is in Phase 2 clinical development. It has completed two clinical trials, including a Phase 1 study and a Phase 2 study, both of which have been completed. The vaccine remains investigational and has not received regulatory approval.
GSK2789869A has been studied in two completed clinical trials. NCT01934127 was a Phase 1 study in adults aged 21 to 64 years, enrolling 427 participants. NCT01949090 was a Phase 2 study in adults aged 65 years and older, enrolling 363 participants. Both trials were conducted in the United States and Canada.
GSK2789869A is a monoclonal antibody-based vaccine designed to target the H7N1 influenza virus strain. By presenting this viral component to the immune system, the vaccine aims to stimulate a protective immune response against influenza. The exact mechanism of action is not fully detailed in available information.