A Study to Test the Safety and Effectiveness of an Investigational Vaccine in Infants (V419-002)

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the safety, tolerability and immunogenicity of 4 different formulations of the HR5I vaccine (Haemophilus influenzae type b conjugate, recombinant hepatitis B surface antigen, diphtheria, tetanus, 5-component acellular pertussis, and inactivated poliovirus Types 1, 2, and 3). The primary hypothesis is that at least 1 of the 4 formulations of HR5I administered as a primary series at 2, 3, and 4 months of age will be acceptable (similar to targeted rates) with respect to Postdose 3 antibody responses to all antigens.

Detailed Description
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Participants will be randomized into 4 arms: AR51 (12, 10): arm receiving vaccine formulation containing 12 mcg of polyribosylribitol phosphate (PRP) conjugates to tetanus toxoid (PRP-T) and 10 mcg of Hepatitis B surface antigen (HBsAg) PR51 (3, 10): arm receiving vaccine formulation containing 3 mcg of PRP conjugated to the outer membrane protein complex of Neisseria meningitides (PRP-OMPC) and 10 mcg of HBsAg PR51 (6, 10): arm receiving vaccine formulation containing 6 mcg of PRP-OMPC and 10 mcg of HBsAg PR51 (6, 15): arm receiving vaccine formulation containing 6 mcg of PRP-OMPC and 15 mcg of HBsAg

Official Title
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Safety, Tolerability, and Immunogenicity of Four Different Formulations of a Liquid Hexavalent Combination Vaccine, HR5I (Haemophilus Influenzae Type b Conjugate, Recombinant Hepatitis B Surface Antigen, Diphtheria Toxoid, Tetanus Toxoid, 5-Component Acellular Pertussis Vaccine, and Inactivated Poliovirus Type 1, 2, and 3), When Administered to Healthy Hepatitis B Vaccine-Naïve Infants at 2, 3, 4, and 12 to 14 Months of Age

Conditions
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Bacterial Infections; Virus Diseases

Intervention / Treatment
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* Biological: AR51 (12, 10)
* Biological: PR51 (3, 10)
* Biological: PR51 (6, 10)
* Biological: PR51 (6, 15)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy infants 2 months of age who have not received prior vaccinations for Haemophilus influenzae type b (Hib), hepatitis B, Diptheria/Pertussis/Tetanus (DPT), or Polio Exclusion Criteria : Documented HIV infection (child or mother) Documented HBsAg-seropositivity (child or mother) History of invasive Hib disease, hepatitis B, diphtheria, tetanus, pertussis, or poliovirus infection History of seizure disorder, developmental delay, or any other neurologic disorder Underlying medical conditions such as inborn errors of metabolism, failure to thrive, or any major congenital abnormalities requiring surgery Prior or anticipated receipt of immune globulin, blood, or blood products Known hypersensitivity to any component of the investigational vaccines being administered in this protocol Any history or condition that would exclude the child from receiving any vaccine administered under this protocol Any condition that, in the opinion of the investigator, may interfere with the evaluation of the study objectives

Ages Eligible for Study
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Minimum Age: 6 Weeks
Maximum Age: 9 Weeks

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: AR51 (12, 10)<br>Participants were vaccinated with 0.5 ml of AR51 (12, 10) formulation via intramuscular injection as a primary series at 2, 3, and 4 months of age, and as a booster at 12 to 14 months of age. | Biological: AR51 (12, 10)<br>* vaccine formulation containing 12 mcg of PRP-T and 10 mcg of HBsAg<br>|
| Experimental: PR51 (3, 10)<br>Participants were vaccinated with 0.5 ml of PR51 (3, 10) formulation via intramuscular injection as a primary series at 2, 3, and 4 months of age, and as a booster at 12 to 14 months of age. | Biological: PR51 (3, 10)<br>* vaccine formulation containing 3 mcg of PRP-OMPC and 10 mcg of HBsAg<br>|
| Experimental: PR51 (6, 10)<br>Participants were vaccinated with 0.5 ml of PR51 (6, 10) formulation via intramuscular injection as a primary series at 2, 3, and 4 months of age, and as a booster at 12 to 14 months of age. | Biological: PR51 (6, 10)<br>* vaccine formulation containing 6 mcg of PRP-OMPC and 10 mcg of HBsAg<br>|
| Experimental: PR51 (6, 15)<br>Participants were vaccinated with 0.5 ml of PR51 (6, 15) formulation via intramuscular injection as a primary series at 2, 3, and 4 months of age, and as a booster at 12 to 14 months of age. | Biological: PR51 (6, 15)<br>* vaccine formulation containing 6 mcg of PRP-OMPC and 15 mcg of HBsAg<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of participants with level of anti-PRP antibodies >1.0 μg/mL at the Postdose 3 time point |  | At 5 months of age (1 month after 3rd vaccination) | 
| Percentage of participants with level of anti-HBsAg antibodies ≥10 mIU/L at the Postdose 3 time point |  | At 5 months of age (1 month after 3rd vaccination) | 
| Percentage of participants with a ≥4-fold rise in levels of antibodies to pertussis antigens (toxoid [PTxd], Filamentous Hemagglutinin [FHA], Fimbria 2 & Fimbria 3 [FIM], and Pertactin [PRN]) at the Postdose 3 time point |  | At 5 months of age (1 month after 3rd vaccination) | 
| Percentage of participants with level of anti-diphtheria antibodies ≥0.01 IU/mL at the Postdose 3 time point |  | At 5 months of age (1 month after 3rd vaccination) | 
| Percentage of participants with level of anti-tetanus antibodies ≥0.01 IU/mL at the Postdose 3 time point |  | At 5 months of age (1 month after 3rd vaccination) | 
| Percentage of participants with neutralizing anti-poliovirus antibodies (Types 1, 2, and 3) at ≥1:8 dilution at the Postdose 3 time point |  | At 5 months of age (1 month after 3rd vaccination) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of participants with at least 1 adverse event (AE) |  | From 1st vaccination up to 14 days following last vaccination (up to 14.5 months) | 
| Number of participants who discontinued study treatment due to an AE |  | From 1st vaccination up to 14 days following last vaccination (up to 14.5 months) |