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Monovalent Subvirion A/H1N1 Influenza vaccine

Phase 2

Influenza | Monoclonal antibody | Infectious Disease |Sanofi|Last Updated: Apr 14, 2016

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment474

FDA Designations

No designations recorded

Clinical trial landscape

Monovalent Subvirion A/H1N1 Influenza vaccine · 1 trial · 2 indications

Phase 2 1
NCT00952419A Study of Different Formulations of an A/H1N1 Pandemic Vaccine in Healthy Children Aged 6 Months to 9 YearsInfluenza
COMPLETED474 Analytics
PHASE2COMPLETED
A Study of Different Formulations of an A/H1N1 Pandemic Vaccine in Healthy Children Aged 6 Months to 9 Years
InfluenzaUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants With Antibody Titers ≥ 10 1/Dilution (1/Dil) Against A/California (H1N1 Vaccine) Strain - Age 6 to 35 Months
Pre-vaccination (Day 0) and 21 days post-vaccination

Pre- and post-vaccination antibody titers were determined by the hemagglutination inhibition (HAI) test.

Number of Participants With Antibody Titers ≥ 40 1/Dilution (1/Dil) Against A/California (H1N1 Vaccine) Strain - Age 6 to 35 Months
Pre-vaccination (Day 0) and Day 21 post-vaccination

Seroprotection: Antibody titer of ≥ 40 1/dil. Antibody titers were determined by the hemagglutination inhibition (HAI) test.

Geometric Mean Titers (GMT) of Antibodies Against A/California (H1N1 Vaccine) Strain - Age 6 to 35 Months
Pre-vaccination (Day 0) and 21 days post-vaccination

Pre-vaccination and post-vaccination antibody titers were determined by the hemagglutination inhibition (HAI) test.

Number of Participants With Antibody Titers ≥ 10 1/Dilution (1/Dil) Against A/California (H1N1 Vaccine) Strain - Age 3 to 9 Years
Pre-vaccination (Day 0) and 21 days post-vaccination

Pre-vaccination and post-vaccination antibody titers were determined by the hemagglutination inhibition (HAI) test.

Number of Participants With Antibody Titers ≥ 40 1/Dilution (1/Dil) Against A/California (H1N1 Vaccine) Strain - Age 3 to 9 Years
Pre-vaccination (Day 0) and Day 21 post-vaccination

Seroprotection: Antibody titer ≥ 40 1/dil. Antibody titers were determined by the hemagglutination inhibition (HAI) test.

Geometric Mean Titers (GMT) of Antibodies Against A/California (H1N1 Vaccine) Strain - Age 3 to 9 Years
Pre-vaccination (Day 0) and Day 21 post-vaccination

Pre-vaccination and post-vaccination antibody titers were determined by the hemagglutination inhibition (HAI) test.

Number of Participants With At Least One Solicited Injection Site or Systemic Reaction Following Vaccination - Age 6 to 23 Months
Days 0 to 7 post-vaccination

Solicited Injection Site Reactions: Tenderness, erythema (redness), swelling, induration (hardening), ecchymosis (bruising). Solicited systemic reactions: Fever (temperature), vomiting, crying abnormal, drowsiness, appetite lost, irritability.

Number of Participants With At Least One Solicited Injection Site or Systemic Reaction Following Vaccination - Age 24 to 35 Months
Days 0 to 7 post-vaccination

Solicited Injection Site Reactions: Pain, erythema (redness), swelling, induration (hardening), ecchymosis (bruising). Solicited systemic reactions: Fever (temperature), headache, malaise (feeling unwell), myalgia (muscle aches and pains), shivering.

Number of Participants With At Least One Solicited Injection Site or Systemic Reaction Following Vaccination - Age 3 to 9 Years
Days 0 to 7 post vaccination

Solicited Injection Site Reactions: Pain, erythema (redness), swelling, induration (hardening), ecchymosis (bruising). Solicited systemic reactions: Fever (temperature), headache, malaise (feeling unwell), myalgia (muscle aches and pains), shivering.

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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
A/H1N1 Vaccine Group 1EXPERIMENTALParticipants will receive A/H1N1 vaccine formulation 1
A/H1N1 Vaccine Group 2EXPERIMENTALParticipants will receive A/H1N1 vaccine formulation 2
Placebo GroupPLACEBO_COMPARATORParticipants will receive a placebo vaccine

Interventions

NameTypeDescription
Monovalent Subvirion A/H1N1 Influenza vaccineBIOLOGICAL0.5 mL, Intramuscular Day 0 and Day 21 (3 to 9 years); 0.25 mL, Intramuscular on Day 0 and Day 21 (6 months to 35 Months)
Normal saline solution (placebo)BIOLOGICAL0.5 mL, Intramuscular Day 0 and Day 21 (3 to 9 years); 0.25 mL, Intramuscular on day 0 and Day 21 (6 months to 35 Months)
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Eligibility Criteria

Age Range6 Months to 9 Years
SexALL
Healthy VolunteersYes
Study Sites20

Inclusion Criteria : All subjects: * Provision of Informed Consent Form signed by the subject's parent(s)/legal representative (and by an independent witness if required by local regulations). In addition, provision of Assent Form signed by subjects aged 7 to 9 years * Subject and parent/guardian ...

Countries:United States
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Frequently asked questions about Monovalent Subvirion A/H1N1 Influenza vaccine

What is Monovalent Subvirion A/H1N1 Influenza vaccine used for?

Monovalent Subvirion A/H1N1 Influenza vaccine is an investigational vaccine being studied for the prevention of influenza, specifically swine-origin A/H1N1 influenza. It is designed for use in healthy children aged 6 months to 9 years. The vaccine is currently in Phase 2 clinical development and is not yet approved.

Who makes Monovalent Subvirion A/H1N1 Influenza vaccine?

Monovalent Subvirion A/H1N1 Influenza vaccine is being developed by Sanofi, a biopharmaceutical company listed on the stock exchange under the ticker symbol SNY. The company is conducting clinical trials to evaluate the vaccine's safety and efficacy in preventing A/H1N1 influenza.

What phase is Monovalent Subvirion A/H1N1 Influenza vaccine in?

Monovalent Subvirion A/H1N1 Influenza vaccine is in Phase 2 clinical development. It is an investigational vaccine and has not been approved by regulatory authorities. One Phase 2 trial has been completed, and the vaccine is not currently in active clinical trials.

What clinical trials is Monovalent Subvirion A/H1N1 Influenza vaccine in?

Monovalent Subvirion A/H1N1 Influenza vaccine was studied in a completed Phase 2 clinical trial with the identifier NCT00952419. The trial, titled 'A Study of Different Formulations of an A/H1N1 Pandemic Vaccine in Healthy Children Aged 6 Months to 9 Years,' enrolled 474 participants in the United States and was placebo-controlled and double-blind.

Is Monovalent Subvirion A/H1N1 Influenza vaccine the same as the A/H1N1 pandemic vaccine?

Monovalent Subvirion A/H1N1 Influenza vaccine is a monovalent vaccine targeting the A/H1N1 influenza strain, which is also referred to as swine-origin A/H1N1 influenza. In clinical trials, it is described as an A/H1N1 pandemic vaccine, indicating it is designed to protect against the pandemic strain of the virus.