A Clinical Trial to Study the Safety, Tolerance and Immunogenic Response to MCV4, Tdap and Bivalent rLP2086 Vaccine When Given at the Same Time to Children Between the Ages of 10 Through 12 Years of Age

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Pfizer
ClinicalTrials.gov Identifier:
NCT01461980
First received: September 28, 2011
Last updated: May 7, 2015
Last verified: May 2015
  Purpose

This is a clinical study to assess the safety, tolerance and immunogenic response to MCV4(quadrivalent meningococcal polysaccharide conjugate, meningococcal serogroups A,C,Y, and W135), Tdap (diphtheria, tetanus, and acellular pertussis), and bivalent rLP2086 vaccine. Healthy male and female subjects, between the ages of 10 to 12 years old, will be randomized into 1 of 3 groups. The subjects, investigators, site staff and sponsor will be blinded to all injections given throughout the study. An unblinded administrator will be responsible to administer the vaccinations to all subjects and will be unblinded to the subject randomization in order to determine which subjects were in randomized to group 3 so they may receive their catch-up vaccinations of MCV4 and Tdap. A final telephone contact will be conducted with all subjects 6-months post their last vaccination to obtain safety information.


Condition Intervention Phase
Vaccines
Meningococcal Vaccines
Biological: rLP2086 + MCV4 + Tdap
Biological: MCV4 + Tdap + saline
Biological: rLP2086 + saline
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: A Phase 2, Randomized, Active-controlled, Observer-blinded Trial, To Assess The Safety, Tolerability, And Immunogenicity Of Mcv4, Tdap Vaccine And Bivalent Rlp2086 Vaccine When Administered Concomitantly In Healthy Subjects Aged > = 10 To <13 Years

Resource links provided by NLM:


Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Geometric Mean Concentrations (GMC) for Diphtheria and Tetanus Antigens [ Time Frame: 1 Month after Vaccination 1 ] [ Designated as safety issue: No ]
    Antibody GMCs of 2 antigens of diphtheria and tetanus toxoid were computed in International Units per milliliter (IU/mL) along with corresponding 2-sided 95 percent (%) confidence intervals (CIs). Here, 'number of participants analyzed' signifies participants with valid and determinate assay results for given antigen.

  • Geometric Mean Concentrations (GMC) for Acellular Pertussis Antigens [ Time Frame: 1 Month after Vaccination 1 ] [ Designated as safety issue: No ]
    Antibody GMCs of 4 acellular pertussis antigens (pertussis toxoid, pertussis filamentous hemagglutinin, pertussis pertactin and pertussis fimbrial agglutinogens types 2+3) were computed in Enzyme-linked immunosorbent assay (ELISA) units per milliliter (EU/mL) along with corresponding 2-sided 95% CIs.

  • Geometric Mean Titer (GMT) for Meningococcal Conjugate Vaccine (MCV4) Antigens [ Time Frame: 1 Month after Vaccination 1 ] [ Designated as safety issue: No ]
    Antibody GMTs of 4 MCV4 antigens (serogroup A, serogroup C, serogroup Y and serogroup W-135) were computed along with corresponding 2-sided 95% CIs.

  • Serum Bactericidal Assay Using Human Complement (hSBA) GMTs of PMB80 [A22] and PMB2948 [B24] 1 Month After Vaccination 3 [ Time Frame: 1 Month after Vaccination 3 ] [ Designated as safety issue: No ]
    Antibody hSBA GMTs of primary strain PMB80 [A22] and PMB2948 [B24] were computed along with corresponding 2-sided 95% CIs. hSBA titers from the 2 primary strains were logarithmically transformed for analysis. Here, 'number of participants analyzed' signifies evaluable immunogenicity population and 'N' signifies participants with valid and determinate assay results for given strain for each group, respectively.


Secondary Outcome Measures:
  • Percentage of Participants With Seroresponse for Tetanus, Diphtheria and Acellular Pertussis (Tdap) and Meningococcal Conjugate Vaccine (MCV4) Antigens [ Time Frame: 1 Month after Vaccination 1 ] [ Designated as safety issue: No ]
    Seroconversion rate for Tdap antigens was defined as greater than or equal to (>=) 4-, 2-fold rise in antibody concentration, if prevaccination antibody concentration was less than or equal to (<=), greater than (>) cutoff value, respectively. For MCV4 antigens >=4-fold rise on serum bactericidal assay using rabbit complement (rSBA) titers if baseline value >= lower limit of quantitation (LLOQ), postdose rSBA titers >=2×LLOQ if baseline value was less than (<) LLOQ. Cutoff value =0.1 IU/mL for diphtheria and tetanus, 0.9,2.9,3.0,10.6 EU/mL for pertussis toxoid, filamentous hemagglutinin, pertactin, fimbriae agglutinogens types 2 + 3, respectively.

  • Percentage of Participants Achieving Predefined Antibody Level for Diphtheria and Tetanus Antigens [ Time Frame: 1 Month after Vaccination 1 ] [ Designated as safety issue: No ]
    Participants with antibody concentration level of greater than or equal to 1.0 IU/mL for diphtheria and tetanus antigens were computed along with corresponding 2-sided 95% CIs.

  • Serum Bactericidal Assay Using Human Complement (hSBA) GMTs of PMB80 [A22] and PMB2948 [B24] Before Vaccination 1 and 1 Month After Vaccination 2 [ Time Frame: Before Vaccination 1, 1 Month after Vaccination (Vac) 2 ] [ Designated as safety issue: No ]
    Antibody hSBA of primary strain PMB80 [A22] and PMB2948 [B24] were computed along with corresponding 2-sided 95% CIs. hSBA titers from the 2 primary strains were logarithmically transformed for analysis.

  • Percentage of Participants With Serum Bactericidal Assay Using Human Complement (hSBA) Titer >= Lower Limit of Quantitation (LLOQ) [ Time Frame: Before Vaccination 1, 1 Month after Vaccination (Vac) 2, 3 ] [ Designated as safety issue: No ]
    Percentage of participants achieving hSBA titer >= LLOQ were computed along with corresponding 2-sided 95% CIs. LLOQ was 1:16 for PMB80 [A22] and 1:8 for PMB2948 [B24].

  • Percentage of Participants With Serum Bactericidal Assay Using Human Complement (hSBA) Titer >= Prespecified Titer Level [ Time Frame: Before Vaccination 1, 1 Month after Vaccination (Vac) 2, 3 ] [ Designated as safety issue: No ]
    Antibody hSBA of primary strain PMB80 [A22] and PMB2948 [B24] with hSBA titers >=1:4, >=1:8, >=1:16, >=1:32, >=1:64, and >=1:128 were computed along with corresponding 2-sided 95% CIs.


Other Outcome Measures:
  • Immunogloblulin G (IgG) Measured by GMC [ Time Frame: Before Vaccination 1, 1 Month after Vaccination 1 ] [ Designated as safety issue: No ]
    IgG GMCs of 4 MCV4 antigens (serogroup A, serogroup C, serogroup Y and serogroup W-135) of participants were computed along with corresponding 2-sided 95% CIs. CIs were back transformations of confidence levels based on Student t distribution for mean logarithm of titers.

  • Percentage of Participants Achieving at Least 4-Fold Increase in Serum Bactericidal Assay Using Human Complement (hSBA) Titer Level [ Time Frame: 1 Month after Vaccination (Vac) 2, 3 ] [ Designated as safety issue: No ]
  • Percentage of Participants With at Least One Adverse Event (AE) [ Time Frame: Vaccination phase (baseline up to 1 month after Vaccination 3); Follow-up phase (from 1 month up to 6 months after Vaccination 3) ] [ Designated as safety issue: Yes ]
    An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship.


Enrollment: 2648
Study Start Date: September 2011
Study Completion Date: May 2014
Primary Completion Date: May 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: MCV4 + Tdap+ rLP2086
Group 1 - MCV4 + Tdap + rLP2086
Biological: rLP2086 + MCV4 + Tdap
At visit 1, group 1 will receive MCV4 + Tdap vaccines concomitantly with an injection of rLP2086. At visits 3 and 5 (Months 2 and 6), group 1 will receive an injection of rLP2086.
Active Comparator: MCV4 + Tdap + saline
Group 2, MCV4 + Tdap+ saline
Biological: MCV4 + Tdap + saline
At visit 1, group 2 will receive MCV4 + Tdap vaccines concomitantly with an injection of saline. At visits 3 and 5 (months 2 and 6), this group will receive a saline injection only.
Placebo Comparator: Saline + saline + rLP2086
Group 3- rLP2086 + saline
Biological: rLP2086 + saline
At visit 1, group 3 will receive 2 injections of saline concomitantly with an injection of rLP2086. At visits 3 and 5 (Months 2 and 6), group 3 will receive an injection of rLP2086. Subjects randomized to this group will receive MCV4 and Tdap following their final visit blood draw (Visit 6).

  Eligibility

Ages Eligible for Study:   10 Years to 12 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Evidence of a personally signed and dated informed consent document (ICD) indicating that the subject (and a legally authorized representative) has been informed of all pertinent aspects of the study.
  • Parent /legally authorized representative and subjects who are willing and able to comply with scheduled visits, laboratory tests, and other study procedures.
  • Male or female subject aged greater than or equal to 10 and <13 years at the time of enrollment.
  • Available for the entire study period and can be reached by telephone.
  • Healthy subject as determined by medical history, physical examination, and judgment of the investigator.
  • Has received full series (5-dose series is preferred, 4-dose catch up series is allowed) of diphtheria, tetanus and pertussis (whole cell or acellular) vaccines per country specific recommendations applicable at the time of receipt.
  • Male and female subjects of childbearing potential must agree to use a highly effective method of contraception throughout the study.

Exclusion Criteria:

  • Previous vaccination with any meningococcal serogroup B vaccine.
  • Vaccination with any diphtheria, tetanus or pertussis vaccine within 5 years of the first study vaccination.
  • Previous vaccination with any MCV4 vaccine.
  • A previous anaphylactic reaction to any vaccine or vaccine-related component.
  • Contraindication to vaccination with MCV4 and/or Tdap vaccine.
  • Subjects receiving any allergen immunotherapy with a non-licensed product or receiving allergen immunotherapy with a licensed product and are not on stable maintenance doses.
  • Bleeding diathesis or condition associated with prolonged bleeding time that would contraindicate intramuscular injection.
  • A known or suspected defect of the immune system that would prevent an immune response to the vaccine, such as subjects with congenital or acquired defects in B cell function, those receiving chronic systemic (oral, intravenous or intramuscular) corticosteroid therapy, or those receiving immunosuppressive therapy. Subjects with terminal complement deficiency may not be included.
  • History of culture-proven disease caused by Neisseria meningitidis or Neisseria gonorrhoea.
  • Significant neurological disorder or history of seizure (excluding simple febrile seizure).
  • Receipt of any blood products, including immunoglobulin within 6 months before the first study vaccination.
  • Current chronic use of systemic antibiotics.
  • Any neuroinflammatory or autoimmune condition, including, but not limited to, transverse myelitis, uveitis, optic neuritis, and multiple sclerosis.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01461980

  Show 118 Study Locations
Sponsors and Collaborators
Pfizer
Investigators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
No publications provided

Responsible Party: Pfizer
ClinicalTrials.gov Identifier: NCT01461980     History of Changes
Other Study ID Numbers: B1971015, 6108A1-2005
Study First Received: September 28, 2011
Results First Received: May 7, 2015
Last Updated: May 7, 2015
Health Authority: United States: Food and Drug Administration

Keywords provided by Pfizer:
vaccine
rLP2086
MCV4
Tdap
meningitis B
N. meningitidis serogroup B
adolescents
observer-blind

ClinicalTrials.gov processed this record on August 27, 2015