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NCT Number: NCT02853929

Evaluation of Immunogenicity and Safety of a Booster Dose of Infanrix Hexa™ in Healthy Infants Born to Mothers Vaccinated With Boostrix™ During Pregnancy or Immediately Post-delivery

The purpose of this study is to assess the immunogenicity and safety of the Infanrix hexa booster dose given at 11-18 months of age to infants who received primary vaccination at 6-14 weeks. All infants in this booster study were born to pregnant women who participated in the study 116945 [DTPA (BOOSTRIX)-047] and having received the full primary vaccination series as per protocol requirement in study 201330 [DTPA (BOOSTRIX)-048.

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Key information

Conditions

Diphtheria Acellular Pertussis Actinomycetales Infections Bacterial Infections Bacterial Infections and Mycoses Blood-Borne Infections Bordetella Infections Central Nervous System Diseases Central Nervous System Infections Clostridium Infections Communicable Diseases Corynebacterium Infections DNA Virus Infections Digestive System Diseases Diphtheria-Tetanus-aPertussis-Hepatitis B-Poliomyelitis-Haemophilus Influenzae Type b Vaccines Enterovirus Infections Gram-Negative Bacterial Infections Gram-Positive Bacterial Infections Haemophilus Infections Haemophilus Influenzae Type b Hepadnaviridae Infections Hepatitis Hepatitis B Hepatitis, Viral, Human Infections Liver Diseases Myelitis Nervous System Diseases Neuroinflammatory Diseases Neuromuscular Diseases Pasteurellaceae Infections Picornaviridae Infections Poliomyelitis RNA Virus Infections Respiratory Tract Diseases Respiratory Tract Infections Spinal Cord Diseases Tetanus Virus Diseases Whooping Cough

Age range

9 month–19 month

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

GSK Investigational Site, Carlton, Victoria, Australia

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subjects' parent(s)/Legally acceptable representatives (LAR(s)) who, in the opinion of the investigator, can and will comply, with the requirements of the protocol (e.g. completion of the diary cards, return for follow-up visits).
  • Written informed consent obtained from the parent(s)/LAR(s) of the subject prior to performing any study specific procedure.
  • A male or female child 9 months of age at the time of enrolment.
  • Healthy subjects as established by medical history and clinical examination before entering into the study.
  • Subjects born to mothers who were vaccinated in 116945 [DTPA (BOOSTRIX)-047] study and having completed their primary vaccination series as per protocol requirement in study 201330 [DTPA (BOOSTRIX)-048 PRI].

Exclusion criteria

  • Child in care
  • Concurrently participating in another clinical study, within three months prior to the booster vaccine dose and at any time during the present booster study, in which the subject has been or will be exposed to an investigational or a non-investigational vaccine/product (pharmaceutical product or device).
  • Chronic administration (defined as more than 14 days in total) of immunosuppressants or other immune-modifying drugs during the period within six months prior to the booster vaccine dose. For corticosteroids, this will mean prednisone ≥0.5mg/kg/day, or equivalent. Inhaled and topical steroids are allowed.
  • Administration of long-acting immune-modifying drugs at any time during the study period (e.g. infliximab).
  • A vaccine not foreseen by the study protocol administered during the period starting from 30 days before the booster dose of study vaccine and ending 30 days after*, with the exception of inactivated influenza vaccine and other vaccines given as a part of the national/regional immunization schedule, that are allowed at any time during the study period.
  • In case an emergency mass vaccination for an unforeseen public health threat (e.g.: a pandemic) is organised by the public health authorities, outside the routine immunization program, the time period described above can be reduced if necessary for that vaccine provided it is licensed and used according to its SPC or Product Information (PI) and according to the local governmental recommendations and provided a written approval of the Sponsor is obtained.
  • Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required).
  • Major congenital defects.
  • Serious chronic illness.
  • Administration of immunoglobulins and/or any blood products during the period within three months before the booster dose of study vaccines or planned administration during the study period.
  • Encephalopathy defined as an acute, severe central nervous system disorder occurring within 7 days following vaccination with Infanrix hexa and generally consisting of major alterations in consciousness, unresponsiveness, generalised or focal seizures that persist more than a few hours, with failure to recover within 24 hours.
  • History of Hib, diphtheria, tetanus, pertussis, pneumococcal, poliovirus and hepatitis B diseases since the conclusion visit of study 201330 [DTPA (BOOSTRIX)-048 PRI].
  • Previous booster vaccination against Hib, diphtheria, tetanus, pertussis, pneumococcus, hepatitis B and/or poliovirus since the conclusion visit of study 201330 [DTPA (BOOSTRIX)-048 PRI].
  • History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccines (e.g: antigen, excipients).
  • Hypersensitivity to latex.
  • History of any neurological disorders or seizures.
  • Any condition that in the judgment of the investigator would make intramuscular injection unsafe.
  • Acute disease and/or fever at the time of vaccination.
  • Fever is defined as temperature ≥ 37.5°C /99.5°F for oral, axillary or tympanic route, or ≥ 38.0°C /100.4°F on rectal route.
  • Subjects with a minor illness (such as mild diarrhoea, mild upper respiratory infection) without fever may be enrolled at the discretion of the investigator.

Treatment and study plan

Infanrix hexa

Biological

All subjects will receive Infanrix hexa co-administered with Prevenar13 as a booster dose.

Primary outcomes

  1. Number of Seroprotected Subjects Against Anti-diphtheria (Anti-D), Anti-tetanus (Anti-T), Anti-hepatitis B (Anti-HBs), Anti-poliovirus Type 1, Anti-poliovirus Type 2, Anti-poliovirus Type 3 and Anti-polyribosyl-ribitol Phosphate (Anti-PRP)

    Time frame: At one month after the booster dose (Day 30)

    Seroprotected subjects were defined as subjects with antibody concentrations/titres above or equal (≥) the assay cut-offs that are accepted immunological correlates of protection.

    0.1 International units per milliliter (IU/ml) for anti-D and anti-T, 10 milli-International units per milliliter (mIU/mL) for anti-HB's, 8 Effective Dose 50 (ED50) for anti-polio virus (type 1,2,3) and 0.15 microgram/milliliter (µg/mL) for anti-PRP were considered as immunological correlates of protection.

  2. Number of Subjects With a Booster Response to Pertussis Antigens (Pertussis Toxoid (PT), Filamentous Haemagglutinin (FHA) and Pertactin (PRN))

    Time frame: At one month after the booster dose (Day 30)

    Booster response to PT, FHA and PRN antigens was defined as:

    • for subjects with pre-vaccination antibody concentration below the assay cut-off, post-vaccination antibody concentration ≥ 4 times the assay cut-off,
    • for subjects with pre-vaccination antibody concentration between the assay cut-off and below 4 times the assay cut-off, post-vaccination antibody concentration ≥ 4 times the pre-vaccination antibody concentration, and
    • for subjects with pre-vaccination antibody concentration ≥ 4 times the assay cut-off, post-vaccination antibody concentration ≥ 2 times the pre-vaccination antibody concentration

    Seronegative (S-) subjects are those who have antibody concentration less than (<) assay cut-off.

    Seropositive (S+) subjects are those who have antibody concentration ≥ assay cut-off prior to vaccination.

    Assay cut-off was 2.693 IU/mL for anti-PT, 2.046 IU/mL for anti- FHA and 2.187 IU/mL for anti-PRN

Secondary outcomes

  1. Number of Seroprotected Subjects Against Anti-diphtheria, Anti-tetanus, Anti-poliovirus Type 1, Anti-poliovirus Type 2, Anti-poliovirus Type 3, Anti-HBs and Anti-PRP.

    Time frame: Before the booster dose (Day 0)

    Seroprotected subjects were defined as subjects with antibody concentrations/titers above or equal (≥) the assay cut-offs that are accepted immunological correlates of protection.

    0.1 IU/mL for anti-D and anti-T, 10 mIU/mL for anti-HB's, 8 ED50 for anti-polio virus (type 1,2,3) and 0.15 µg/mL for anti-PRP were considered as immunological correlates of protection.

  2. Number of Seropositive Subjects for Anti-PT, Anti-FHA and Anti-PRN

    Time frame: Before the booster dose (Day 0)

    Seropositive subjects were defined as subjects whose antibody concentration/titre was greater than or equal to the assay cut-off.

    Assay cut-off was 2.693 IU/mL for anti-PT, 2.046 IU/mL for anti-FHA and 2.187 IU/mL for anti-PRN

  3. Number of Seropositive Subjects for Anti-pneumococcal Serotypes (1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F)

    Time frame: Before the booster dose (Day 0)

    Seropositive subjects were defined as subjects whose antibody concentration/titre was greater than or equal to the assay cut-off.

    Assay cut-off's for anti-pneumococcal serotypes (1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F) are 0.080 µg/mL, 0.075 µg/mL, 0.061 µg/mL, 0.198 µg/mL, 0.111 µg/mL, 0.102 µg/mL, 0.063 µg/mL, 0.66 µg/mL, 0.160 µg/mL, 0.111 µg/mL, 0.199 µg/mL, 0.163 µg/mL, 0.073 µg/mL respectively.

  4. Anti-D, Anti-T, Anti-PT, Anti-FHA, Anti-PRN Antibody Concentrations

    Time frame: Before the booster dose (Day 0) and One month after the booster dose (Day 30)

    Antibody concentrations are presented as Geometric Mean Concentrations (GMCs) and expressed in IU/mL.

  5. Anti-poliovirus Type 1, 2, 3 Antibody Titres

    Time frame: Before the booster dose (Day 0) and One month after the booster dose (Day 30)

    Anti-Poliovirus type 1, 2 and 3 antibody titers were expressed as Geometric Mean Titers (GMT).

  6. Anti-HBs Antibody Concentrations

    Time frame: Before the booster dose (Day 0) and One month after the booster dose (Day 30)

    Antibody concentrations are presented as Geometric Mean Concentrations (GMCs) and expressed in mIU/mL.

  7. Anti-pneumococcal Serotypes (1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F) and Anti-PRP Antibody Concentrations

    Time frame: Before the booster dose (Day 0) and One month after the booster dose (Day 30)

    Antibody concentrations are presented as Geometric Mean Concentrations (GMCs) and expressed in µg/mL.

  8. Number of Seropositive Subjects for Anti-PT, Anti-FHA and Anti-PRN.

    Time frame: At one month after the booster dose (Day 30)

    Seropositive subjects were defined as subjects whose antibody concentration/titre was greater than or equal to the assay cut-off.

    Assay cut-off was 2.693 IU/mL for anti-PT, 2.046 IU/mL for anti- FHA and 2.187 IU/mL for anti-PRN

  9. Number of Subjects With Solicited Local Symptoms

    Time frame: During the 4-day (Day 0-Day 3) follow-up period after booster vaccination of two vaccines (Infanrix hexa and Prevenar 13)

    Assessed solicited local symptoms were pain, redness, swelling. Any redness, swelling is defined as a symptom with a surface diameter greater than 0 millimeter

  10. Number of Subjects With Solicited General Symptoms

    Time frame: During the 4-day (Day 0-Day 3) follow-up period after booster vaccination

    Assessed solicited general symptoms were Drowsiness, Fever, Irritability/Fussiness and Loss of appetite.

    Fever was defined as temperature ≥37.5 degree Celsius (°C) /99.5 degree Fahrenheit (°F) for oral, axillary or tympanic route, or ≥38.0°C/100.4°F on rectal route.

  11. Number of Subjects With Unsolicited Adverse Events (AEs)

    Time frame: During the 31-day (Day 0-Day 30) follow-up period after booster vaccination

    An AE was any untoward medical occurrence in a patient or clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product.

  12. Number of Subjects With Serious Adverse Events (SAEs)

    Time frame: From booster dose up to study end (approximately 6 or 7 months, per subject)

    SAE is any untoward medical occurrence that results in death, is life threatening, requires hospitalisation or prolongation of existing hospitalisation, resulting in disability/incapacity

  13. Number of Subjects With an ASQ-3 Score (Ages & Stages Questionnaires, Third Edition) in the Black Zone

    Time frame: At 9 months of age, 18 months of age, and 9 or 18 months of age

    Neurodevelopmental status was measured by ASQ-3 score scale [ASQ-3, 2016] in the black zone. The ASQ-3 included a series of questions designed to assess 5 areas of development (communication, gross motor, fine motor, problem solving, and personal-social). Any subject who scored below the cut-off i.e., a score more than 2 Standard Deviations (SDs) below the mean score for the U.S. reference group (i.e., black zone in the score chart) in any of the 5 domains of the ASQ-3 was to be referred to a developmental specialist for a formal neurodevelopmental assessment (using the Bayley Scale for Infant Development, Version III [BSID-III])

  14. Number of Subjects Referred for Formal Neurodevelopmental Evaluation Using BSID-III (Bayley Scale for Infant Development, Version III)

    Time frame: At 9 months of age, 18 months of age, and 9 or 18 months of age

    Any subject who scored below the cut-off i.e., a score more than 2 Standard Deviations (SDs) below the mean score for the U.S. reference group (i.e., black zone in the score chart) in any of the 5 domains of the ASQ-3 was referred to a developmental specialist for a formal neurodevelopmental assessment (using the Bayley Scale for Infant Development, Version III BSID-III)

  15. Estimated Proportion of Infants With at Least One of the Indicators of Neurodevelopmental Impairment Using BSID-III (Bayley Scale for Infant Development, Version III)

    Time frame: At 9 months of age, 18 months of age, and 9 or 18 months of age

    The estimated proportion (expressed in percentage) of infants with a BSID-III indicator of neurodevelopmental delay was based on ASQ-3 black zone indicator and subsequent BSID-III assessment using the following formula: 100 * (Number of subjects with ASQ-3 below cut off / Number of enrolled subjects with available results) * (Number of subjects with at least one indicator of neurodevelopmental delay using BSID III / Number of subjects referred for BSID III evaluation)

Sponsors and collaborators

Lead sponsor

GlaxoSmithKline

Industry

Registry information

Official study title

Immunogenicity and Safety Study of a Booster Dose of GSK Biologicals' Infanrix Hexa™ (217744) in Healthy Infants Born to Mothers Vaccinated With Boostrix™ During Pregnancy or Immediately Post-delivery

Important dates

Study start
2016
Primary completion
2019
Study completion
2019
First posted
Aug 3, 2016
Registry last updated
Jan 14, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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