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A/H5N1

Phase 2

Pandemic Influenza | Monoclonal antibody | Infectious Disease |Valneva SE|Trials Updated: Dec 10, 2021

A/H5N1 development status

Highest phase Phase 2
Registered trials 2 across 1 sponsor since Sep 2007

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment1,001

FDA Designations

No designations recorded

A/H5N1 clinical trials

A/H5N1 · 2 trials · 1 indication

Phase 2 1Phase 1 1
NCT00908687A/H5N1/LT Dose Ranging StudyPandemic Influenza
COMPLETED500 Analytics
PHASE2COMPLETED
A/H5N1/LT Dose Ranging Study
Pandemic InfluenzaUnlock trial analytics

Study Endpoints

Primary Endpoints

Assess the Proportion of Subjects in Each Dose Group Achieving Seroconversion and Seroprotection for HI Antibody Titer Through Day 28.
Day 28

Seroconversion is defined as either 1) baseline HI titer \< 1:10 and a post-vaccination HI titer ≥ 1:40, or 2) baseline HI titer ≥ 1:10 and a minimum four-fold rise. Seroprotection is defined as a post-vaccination HI antibody titer ≥ 1:40. FDA/EMEA criterion for seroconversion was to meet or exceed 40%. FDA/EMEA criterion for seroprotection was to meet or exceed 70%.

Safety of Intramuscular A/H5N1 with and without the LT adjuvant patch
6 months

Secondary Endpoints

Safety of A/H5N1 Vaccine IM Injection With and Without an LT Adjuvant Patch
6 months
Evaluate Treatment Group HI Responses Against US FDA Guidance for Industry: Clinical Data Needed to Support the Licensure of Pandemic Influenza Vaccines (May 2007) and EMA CPMP/BWP/214/96 Criteria for Immunogenicity
Day 28
Demonstration of adjuvant effect and evaluation of immunogenicity
Day 42
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Group 1: 30 µg HA, no LT patchEXPERIMENTALA/H5N1 Vaccine 30 µg HA i.m. on Day 0
Group 2: 30 µg HA + 50 µg LT patchEXPERIMENTALA/H5N1 Vaccine 30 µg HA i.m. + LT adjuvant patch containing 50 µg of LT on Day 0
Group 3: 30 µg HA + 100 µg LT patchEXPERIMENTALA/H5N1 Vaccine 30 µg HA i.m. + LT adjuvant patch containing 100 µg of LT on Day 0
Group 4: 45 µg HA, no LT patchEXPERIMENTALA/H5N1 Vaccine 45 µg HA i.m. on Day 0
Group 5: 45 µg HA + 50 µg LT patchEXPERIMENTALA/H5N1 Vaccine 45 µg HA i.m. + LT adjuvant patch containing 50 µg of LT on Day 0
Group 6: 45 µg HA + 100 µg LT patchEXPERIMENTALA/H5N1 Vaccine 45 µg HA i.m. + LT adjuvant patch containing 100 µg of LT on Day 0
Group 1EXPERIMENTAL -
Group 2EXPERIMENTAL -
Group 3EXPERIMENTAL -
Group 4EXPERIMENTAL -
Group 5EXPERIMENTAL -
Group 6EXPERIMENTAL -
Group 7EXPERIMENTAL -
Group 8EXPERIMENTAL -
Group 9EXPERIMENTAL -
Group 10PLACEBO_COMPARATOR -

Interventions

NameTypeDescription
A/H5N1BIOLOGICALA/H5N1 Low Dose
LT Adjuvant PatchBIOLOGICALLT Adjuvant Patch Low Dose
PlaceboBIOLOGICALPlacebo (0.5ml); Route IM - Day 0 and Day 21; no LT patch on Day 0 or Day 21
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Eligibility Criteria

Age Range18 Years to 49 Years
SexALL
Healthy VolunteersYes
Study Sites6

Inclusion Criteria: * Healthy adult male or females 18 to 49 years of age (inclusive) * Signed Informed Consent * Women who are not post-menopausal or surgically sterile must have a negative serum or urine pregnancy test at screening and within 24 hours of vaccination with understanding (through in...

Countries:United States
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Frequently asked questions about A/H5N1

What is A/H5N1 used for?

A/H5N1 is being developed for pandemic influenza, targeting the A/H5N1 influenza virus strain. It is an investigational monoclonal antibody from Valneva SE. The program is in Phase 2 clinical development, with two completed trials in healthy adult volunteers.

Who is developing A/H5N1?

A/H5N1 is being developed by Valneva SE, which trades under the ticker VALN. The company is advancing the monoclonal antibody candidate for pandemic influenza. Both clinical trials conducted to date have been completed.

What phase is A/H5N1 in?

A/H5N1 is in Phase 2 clinical development. The program includes two completed trials: a Phase 2 dose ranging study and a Phase 1 dose ranging study with an adjuvant patch. No trials are currently active.

What clinical trials is A/H5N1 in?

A/H5N1 has been studied in two completed trials. NCT00908687 was a Phase 2 dose ranging study enrolling 500 healthy adult volunteers in the United States. NCT00532792 was a Phase 1 dose ranging study with an adjuvant patch enrolling 501 participants, also in the United States.