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GSK2340274A

Phase 3

Influenza | Monoclonal antibody | Infectious Disease |GSK plc|Last Updated: Aug 1, 2018

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials4
Total Enrollment6,325

FDA Designations

No designations recorded

Clinical trial landscape

GSK2340274A · 4 trials · 1 indication

Phase 3 1Phase 2 3
NCT00979602Safety, Immunogenicity, and Relative Efficacy of H1N1 Vaccines in Adults Aged 18 Years and OlderInfluenza
COMPLETED4,048 Analytics
PHASE3COMPLETED
Safety, Immunogenicity, and Relative Efficacy of H1N1 Vaccines in Adults Aged 18 Years and Older
InfluenzaUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Seroconverted (SCR) Subjects for Hemagglutination Inhibition (HI) Antibodies Against Flu A/CAL/7/09 H1N1 Virus Strain
At Day 21

A seroconverted subject was defined as a vaccinated subject who had a post-vaccination titer higher than or equal to (≥)1:40 or at least a 4-fold increase of the pre-vaccination titer of ≥ 1:10. The Flu strain assessed was A/California/7/09 (H1N1)v-like (Flu A/CAL/7/09) in subjects of 18-60 years and older and 18-64 years and older, following the Committee for Medicinal Products for Human Use (CHMP) and the Center for Biologics Evaluation and Research (CBER) guidance.

Number of Seroprotected (SPR) Subjects for HI Antibodies Against the Flu A/CAL/7/09 H1N1 Virus Strain
At Day 0

A seroprotected subject was defined as a vaccinated subject with serum Hemagglutination Inhibition (HI) antibody titer ≥ 1:40 against the tested virus. The Flu strain assessed was A/California/7/2009 (H1N1)v-like (Flu A/CAL/7/09) in subjects 18-60 years and older and 18-64 years and older, following the CHMP and the CBER guidance.

Seroconversion Factor (SCF) for HI Antibodies Against Flu A/CAL/7/09 H1N1 Virus Strain
At Day 21

SCF was defined as the fold increase in serum HI geometric mean of the within-subject ratios of the post-vaccination reciprocal HI titer to the pre-vaccination reciprocal HI titer for the vaccine virus, in subjects 18-60 years and older and 18-64 years and older, following the CHMP guidance.

Number of A/California/7/2009 (H1N1)V-like Illness (ILI) Cases
From Day 14 post-vaccination up to study end (at Day 385)

The analysis focused on Quantitative Reverse Transcription Polymerase Chain Reaction Assay (RT-qPCR)-confirmed A/California/7/2009 (H1N1)v-like illness (ILI) cases.

Number of Seroconverted Subjects Against Flu A/CAL/7/09 Influenza Strain - Preliminary Analysis
At Day 21

A seroconverted subject was defined as a vaccinated subject who had either a pre-vaccination reciprocal hemagglutination inhibition (HI) titer lower than (\<) 10 and a post-vaccination reciprocal HI titer higher than or equal to (≥) 40, or a pre-vaccination reciprocal hemagglutination inhibition (HI) titer ≥ 10 and at least a 4-fold increase in post vaccination reciprocal titer against the vaccine virus.

Number of Seroconverted Subjects Against Flu A/CAL/7/09 Influenza Strain - First Analysis
At Day 21

A seroconverted subject was defined as a vaccinated subject who had either a pre-vaccination reciprocal HI titer \< 10 and a post-vaccination reciprocal titer higher than or equal to (≥) 40, or a pre-vaccination reciprocal hemagglutination inhibition (HI) titer ≥ 10 and at least a 4-fold increase in post vaccination reciprocal titer against the vaccine virus.

Number of Seroconverted Subjects Against Flu A/CAL/7/09 Influenza Strain - Second Analysis
At Day 21

A seroconverted subject was defined as a vaccinated subject who had either a pre-vaccination reciprocal HI titer \< 10 and a post-vaccination reciprocal titer higher than or equal to (≥) 40, or a pre-vaccination reciprocal hemagglutination inhibition (HI) titer ≥ 10 and at least a 4-fold increase in post vaccination reciprocal titer against the vaccine virus.

Number of Seroprotected Subjects Against Flu A/CAL/7/09 Influenza Strain - Preliminary Analysis
At Day 0

A seroprotected subject was defined as a vaccinated subject with reciprocal HI titers higher than or equal to (≥) 40 against the tested virus.

Number of Seroprotected Subjects Against Flu A/CAL/7/09 Influenza Strain - First Analysis
At Day 0

A seroprotected subject was defined as a vaccinated subject with reciprocal HI titers higher than or equal to (≥) 40 against the tested virus.

Number of Seroprotected Subjects Against Flu A/CAL/7/09 Influenza Strain - Second Analysis
At Day 0

A seroprotected subject was defined as a vaccinated subject with reciprocal HI titers higher than or equal to (≥) 40 against the tested virus.

Number of Seroprotected Subjects Against Flu A/CAL/7/09 Strain - First Analysis
At Day 0

A seroprotected subject was defined as a vaccinated subject with reciprocal HI titers higher than or equal to (≥) 40 against the tested virus.

Number of Seroprotected Subjects Against Flu A/CAL/7/09 Strain - Second Analysis
At Day 0

A seroprotected subject was defined as a vaccinated subject with reciprocal HI titers higher than or equal to (≥) 40 against the tested virus.

Seroconversion Factor (SCF) for HI Antibodies Against Flu A/CAL/7/09 Influenza Strain - Preliminary Analysis
At Day 21

SCF was defined as the geometric mean of the within-subject ratios of the post-vaccination reciprocal HI titer to the pre-vaccination reciprocal HI titer for the vaccine virus.

Seroconversion Factor (SCF) for HI Antibodies Against Flu A/CAL/7/09 Influenza Strain - First Analysis
At Day 21

SCF was defined as the geometric mean of the within-subject ratios of the post-vaccination reciprocal HI titer to the pre-vaccination reciprocal HI titer for the vaccine virus.

Seroconversion Factor (SCF) for HI Antibodies Against Flu A/CAL/7/09 Influenza Strain - Second Analysis
At Day 21

SCF was defined as the geometric mean of the within-subject ratios of the post-vaccination reciprocal HI titer to the pre-vaccination reciprocal HI titer for the vaccine virus.

Number of Subjects Seropositive for Haemagglutination Inhibition (HI) Antibodies Against the A/California Virus Strain
At Day 0

A seropositive subject against the A/California/ virus strain was defined as a subject with H1N1 reciprocal haemagglutination inhibition (HI) antibody titers greater than or equal to (≥) the seropositivity cut-off of 1:10. Results were tabulated according to age strata: subjects between 18 to 60 years (y) old and subjects older than (\>) 60 years.

Number of Subjects Seropositive for (HI) Antibodies Against the A/California Virus Strain
At Day 0

A seropositive subject against the A/California/ virus strain was defined as a subject with H1N1 reciprocal haemagglutination inhibition (HI) antibody titers greater than or equal to (≥) the seropositivity cut-off of 1:10. Results were tabulated according to age strata: subjects between 18 to 64 years (y) old and subjects \> 64 years.

Number of Seroconverted (SCR) Subjects for Haemagglutination Inhibition (HI) Antibodies Against A/California Virus Strain
At Day 21

A seroconverted subject was defined as a vaccinated subject who had a post-vaccination titer ≥ 1:40 and at least a 4-fold increase in pre-vaccination titer. The Flu strain assessed was A/California/7/09 (H1N1)v-like) and results were tabulated for subjects between 18 and 60 years of age and older (\>60y).

Number of Seroconverted (SCR) Subjects for HI Antibodies Against A/California Strain
At Day 21

A seroconverted subject was defined as a vaccinated subject who had a post-vaccination titer ≥ 1:40 and at least a 4-fold increase in pre-vaccination titer. The Flu strain assessed was A/California/7/09 (H1N1)v-like) and results were tabulated for subjects between 18 and 64 years and older (\>64y).

Number of Seroprotected (SPR) Subjects for HI Antibodies Against A/California Virus Strain
At Day 0

A seroprotected subject was defined as a vaccinated subject with serum Hemagglutination Inhibition (HI) titer ≥ 1:40. The Flu strain assessed was A/California/7/2009 (H1N1)v-like (Flu A/CAL/7/09) and results were tabulated for subjects between 18 and 60 years and older (\>60y).

Number of Seroprotected (SPR) Subjects for HI Antibodies Against A/California Strain
At Day 0

A seroprotected subject was defined as a vaccinated subject with serum Hemagglutination Inhibition (HI) titer ≥ 1:40. The Flu strain assessed was Flu A/CAL/7/09 and results were tabulated for subjects between 18 and 64 years and older (\>64y).

Seroconversion Factor (SCF) for Haemagglutination Inhibition (HI) Antibodies Against A/California Virus Strain
At Day 21

SCF was defined as the fold increase in serum HI geometric mean ratio (mean\[log10(POST/PRE)\]) vaccination compared to Day 21. The flu strain assessed was Flu A/CAL/7/09 and results were tabulated for subjects between 18 and 60 years of age and older (\>60y).

Seroconversion Factor (SCF) for HI Antibodies Against A/California Strain
At Day 21

SCF was defined as the fold increase in serum HI geometric mean ratio (mean\[log10(POST/PRE)\]) vaccination compared to Day 21. The flu strain assessed was Flu A/CAL/7/09 and results were tabulated for subjects between 18 and 64 years of age and older (\>64y).

Hemagglutination Inhibition (HI) Antibody Titers Against A/California/7/2009 H1N1 Vaccine Strain.
21 days after the second dose of Arepanrix vaccine (at Day 42).

The A/California vaccine virus-homologous antibody response was measured in subjects having received Flulaval vaccine co-administered with the first dose of Arepanrix vaccine, and in subjects having received two doses of Arepanrix vaccine alone. Titers were expressed as geometric mean antibody titers (GMTs).

Secondary Endpoints

Number of Seropositive Subjects for HI Antibodies Against Flu A/CAL/7/09 H1N1 Virus Strain
At Days 0 and 21
Titers for Serum HI Antibodies Against Flu A/CAL/7/09 H1N1 Virus Strain
At Days 0 and 21
Number of Seroconverted (SCR) Subjects for HI Antibodies Against Flu A/CAL/7/09 H1N1 Virus Strain
At Day 42
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
GSK2340274A GroupEXPERIMENTALHealthy male or female subjects between and including 18 to 60 years of age and older (\>60 years) and between 18 to 64 years of age and older (\>64 years), who received one dose of the adjuvanted GSK2340274A vaccine at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm.
GSK2340273A GroupEXPERIMENTALHealthy male or female subjects between and including 18 to 60 years of age and older (\>60 years) and between 18 to 64 years of age and older (\>64 years), who received one dose of the unadjuvanted GSK2340273A vaccine at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm.
Arepanrix/F1 GroupEXPERIMENTALSubjects, aged 6 months - 9 years, male or female, received 2 doses of Arepanrix™-formulation 1 (F1) vaccine administered at a 21-day interval. The first dose was administered intramuscularly in the deltoid region of the non-dominant arm (or left arm if dominance was not yet identified) or left anterolateral thigh \[for children under (\<) 12 months of age\]. The second vaccine dose was administered in the deltoid region of the dominant arm (or right arm) or right anterolateral thigh (children \< 12 months of age).
Arepanrix/F2 GroupEXPERIMENTALSubjects, aged 6 months - 9 years, male or female, received 2 doses of Arepanrix™-formulation 2 (F2) vaccine administered at a 21-day interval. The first dose was administered intramuscularly in the deltoid region of the non-dominant arm (or left arm if dominance was not yet identified) or left anterolateral thigh (for children \< 12 months of age). The second vaccine dose was administered in the deltoid region of the dominant arm (or right arm) or right anterolateral thigh (children \< 12 months of age).
GSK2340273A/F1 GroupEXPERIMENTALSubjects, aged 6 months - 9 years, male or female, received 2 doses of GSK2340273A-formulation 1 (F1) vaccine administered at a 21-day interval. The first dose was administered intramuscularly in the deltoid region of the non-dominant arm (or left arm if dominance was not yet identified) or left anterolateral thigh (for children \< 12 months of age). The second vaccine dose was administered in the deltoid region of the dominant arm (or right arm) or right anterolateral thigh (children \< 12 months of age).
GSK2340273A/F2 GroupEXPERIMENTALSubjects, aged 6 months - 9 years, male or female, received 2 doses of GSK2340273A-formulation 2 (F2) vaccine administered at a 21-day interval. The first dose was administered intramuscularly in the deltoid region of the non-dominant arm (or left arm if dominance was not yet identified) or left anterolateral thigh (for children \< 12 months of age). The second vaccine dose was administered in the deltoid region of the dominant arm (or right arm) or right anterolateral thigh (children \< 12 months of age).
GSK2340274A F1_2D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received 2 doses of Formulation 1 (F1) of GSK2340274A vaccine: at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and at Day 21, administered intramuscularly into the deltoid region of the dominant arm.
GSK2340274A F2_2D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received 2 doses of Formulation 2 (F2) of GSK2340274A vaccine: at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and at Day 21, administered intramuscularly into the deltoid region of the dominant arm.
GSK2340274A F2_1D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received one dose of Formulation 2 (F2) of GSK2340274A vaccine at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and one dose of saline placebo at Day 21, administered intramuscularly into the deltoid region of the dominant arm.
GSK2340274A F1_1D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received one dose of Formulation 1 (F1) of GSK2340274A vaccine at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and one dose of saline placebo at Day 21, administered intramuscularly into the deltoid region of the dominant arm.
GSK2340273A F1_1D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received one dose of Formulation 1 (F1) of GSK2340273A vaccine at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and one dose of saline at Day 21, administered intramuscularly into the deltoid region of the dominant arm.
GSK2340273A F2_2D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received 2 doses of Formulation 2 (F2) of GSK2340273A vaccine: at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and at Day 21, administered intramuscularly into the deltoid region of the dominant arm.
GSK2340273A F2_1D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received one dose of Formulation 2 (F2) of GSK2340273A vaccine at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and one dose of saline at Day 21, administered intramuscularly into the deltoid region of the dominant arm. Subjects above (\>) 60 years old received an additional dose of Formulation 2 (F2) of GSK2340273A vaccine after Day 42, administered into the deltoid region of the non-dominant arm.
GSK2340273A F3_2D GroupEXPERIMENTALHealthy male or female subjects, above and including 18 years of age, who received 2 doses of Formulation 3 of GSK2340273A vaccine: at Day 0, administered intramuscularly into the deltoid region of the non-dominant arm and at Day 21, administered intramuscularly into the deltoid region of the dominant arm.
Flulaval/placebo/unadjuvanted Arepanrix GroupEXPERIMENTALsubjects received co-administration of Flulaval vaccine and saline placebo on Day 0 followed by the unadjuvanted formulation of Arepanrix vaccine on Day 21 and Day 42. All vaccines were administered intramuscularly in the deltoids of the dominant or non dominant arm. At Day 0 the two vaccines were administered each in a separate arm, at Day 21 in the dominant arm and at Day 42 in the non-dominant arm.
Flulaval/placebo/Arepanrix GroupEXPERIMENTALsubjects received co-administration of Flulaval vaccine and saline placebo on Day 0 followed the administration of Arepanrix vaccine on Day 21 and Day 42. All vaccines were administered intramuscularly in the deltoids of the dominant or non dominant arm. At Day 0 the two vaccines were administered each in a separate arm, at Day 21 in the dominant arm and at Day 42 in the non-dominant arm.
Flulaval/unadjuvanted Arepanrix/placebo GroupEXPERIMENTALsubjects received co-administration of Flulaval vaccine and the unadjuvanted formulation of Arepanrix vaccine on Day 0 followed by the administration of the unadjuvanted formulation of Arepanrix vaccine on Day 21 and saline placebo on Day 42. All vaccines were administered intramuscularly in the deltoids of the dominant or non dominant arm. At Day 0 the two vaccines were administered each in a separate arm, at Day 21 in the dominant arm and at Day 42 in the non-dominant arm.
Flulaval/Arepanrix/placebo GroupEXPERIMENTALsubjects received co-administration of Flulaval vaccine and Arepanrix vaccine on Day 0 followed by Arepanrix vaccine on Day 21 and saline placebo on Day 42. All vaccines were administered intramuscularly in the deltoids of the dominant or non dominant arm. At Day 0 the two vaccines were administered each in a separate arm, at Day 21 in the dominant arm and at Day 42 in the non-dominant arm.
Unadjuvanted Arepanrix/placebo/Flulaval GroupEXPERIMENTALsubjects received co-administration of the unadjuvanted formulation of Arepanrix vaccine and saline placebo on Day 0 followed by the unadjuvanted formulation of Arepanrix vaccine on Day 21 and Flulaval vaccine on Day 42. All vaccines were administered intramuscularly in the deltoids of the dominant or non dominant arm. At Day 0 the two vaccines were administered each in a separate arm, at Day 21 in the dominant arm and at Day 42 in the non-dominant arm.
Arepanrix/placebo/Flulaval GroupEXPERIMENTALsubjects received co-administration of Arepanrix vaccine and saline placebo on Day 0 followed by Arepanrix vaccine on Day 21 and Flulaval vaccine on Day 42. All vaccines were administered intramuscularly in the deltoids of the dominant or non dominant arm. At Day 0 the two vaccines were administered each in a separate arm, at Day 21 in the dominant arm and at Day 42 in the non-dominant arm.

Interventions

NameTypeDescription
GSK2340274ABIOLOGICALOne intramuscular injection
GSK2340273ABIOLOGICALOne intramuscular injection
Saline placeboBIOLOGICALOne injection
Seasonal trivalent influenza vaccine (TIV)BIOLOGICALSingle intramuscular injection
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersYes
Study Sites38

Inclusion Criteria: * Subjects who the investigator believes can and will comply with the requirements of the protocol. * Written informed consent obtained from the subject. * Male and female adults, \>= 18 years of age at the time of the first vaccination. * Satisfactory baseline medical assessmen...

Countries:United StatesCanada
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Frequently asked questions about GSK2340274A

What is GSK2340274A used for?

GSK2340274A is a monoclonal antibody being developed for influenza, an infectious disease. It is currently in Phase 3 clinical development and is being studied as a potential treatment or preventive measure for the flu. The drug is being developed by GSK plc.

Who makes GSK2340274A?

GSK2340274A is being developed by GSK plc, a global biopharmaceutical company. GSK plc is listed on the stock exchange under the ticker symbol GSK. The company is conducting clinical trials to evaluate the safety and efficacy of this monoclonal antibody for influenza.

What phase is GSK2340274A in?

GSK2340274A is currently in Phase 3 clinical development for influenza. It is an investigational drug, meaning it has not yet been approved by regulatory authorities. The Phase 3 trials are designed to further assess its safety and efficacy in larger patient populations.

What clinical trials is GSK2340274A in?

GSK2340274A has been studied in four completed clinical trials for influenza. These include NCT00976820, NCT00979602, NCT00985088, and NCT00985673. The trials evaluated the drug's safety and immunogenicity in adults and children, with a total enrollment of 6,325 participants across the United States and Canada.

Is GSK2340274A the same as an H1N1 vaccine?

GSK2340274A is a monoclonal antibody, not a vaccine. The clinical trials associated with it, such as NCT00976820 and NCT00979602, studied H1N1 vaccines, but the drug itself is a different type of product. It is being developed as a therapeutic or preventive agent for influenza.