Clinical trial NCT01153893: Immunization of Children Previously Primed With GSK Pneumococcal Vaccine GSK1024850A and of Unprimed Children in Nigeria
Official title: Safety, Reactogenicity and Immunogenicity Study of GSK Biologicals' Pneumococcal Vaccine GSK1024850A, Given Either as a Booster Dose or as a 2-dose Catch-up Immunization in Healthy Nigerian Children
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE3
Conditions: Infections, Streptococcal
Keywords: Pneumococcal disease
Pneumococcal vaccine
Catch-up vaccination
Immunogenicity
Booster vaccination
Safety
Lead sponsor: GlaxoSmithKline
Sponsor class: INDUSTRY
First posted: 2010-06-30
Enrollment: 105
Sex: ALL
Minimum age (years): 15
Maximum age (years): 21
Standard ages: CHILD
Accepts healthy volunteers: yes
Allocation: NON_RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The purpose of this trial is to assess the safety, reactogenicity and immunogenicity of GSK Biologicals' pneumococcal conjugate vaccine GSK1024850A when administered either as a booster dose or as a two dose catch-up vaccination in the second year of life to the Nigerian subjects previously enrolled in the primary vaccination study NCT00678301.

This protocol posting deals with objectives \& outcome measures of the booster phase. The objectives \& outcome measures of the primary phase are presented in a separate protocol posting (NCT number = NCT00678301).


Eligibility criteria: Inclusion Criteria:

* Subjects who the investigator believes that their parent(s)/Legally Acceptable Representative(s) (LAR(s)) can and will comply with the requirements of the protocol.
* A male or female, between and including 15-21 months of age at the time of visit 1.
* For the Pn-Pn group, subjects who completed the full vaccination course in study NCT00678301. For the Zil-Pn group, subjects who were previously enrolled in the control group of study NCT00678301.
* Written informed consent, signed or thumb printed, obtained from the parent(s)/LAR(s) of the subject. Where parent(s)/LAR(s) are illiterate, the consent form will be countersigned by a witness.
* Healthy subjects as established by medical history and clinical examination before entering into the study.

Exclusion Criteria:

* Use of any investigational or non-registered product other than the study vaccine(s)/product(s) within 30 days preceding the first dose of vaccine, or planned use during the study period.
* Chronic administration of immunosuppressants or other immune-modifying drugs within six months prior to vaccination.
* Planned administration/administration of a vaccine not foreseen by the study protocol during the period starting from 30 days before each dose of study vaccine and ending 30 days after. Locally recommended vaccines for example Oral Polio Vaccine or influenza vaccine are always allowed, even if concomitantly administered with the study vaccines, but should be documented in the CRF.
* Concurrently participating in another clinical study at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product.
* Administration of any pneumococcal vaccine since the end of study NCT00678301.
* Any confirmed or suspected immunosuppressive or immunodeficient condition, since the end of study NCT00678301, based on medical history and physical examination.
* Major congenital defects or serious chronic illness.
* History of any progressive neurological disorders or seizures.
* Acute disease and/or fever at the time of enrolment.
* History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccines.
* Administration of immunoglobulins and/or any blood products less than 3 months prior to visit 1 or planned use during the study.
* Child in care.

Primary outcomes:
measure: Number of Subjects Reporting Grade 3 Symptoms (Solicited and Unsolicited).
timeFrame: Within 31 days (Day 0 to Day 30) after administration of a booster dose of Synflorix vaccine in the Synflorix/Infanrix primed Group.
Secondary outcomes:
measure: Concentrations of Antibodies Against Vaccine Pneumococcal Serotypes.
timeFrame: Prior to and one month after the booster immunisation for the Synflorix/Infanrix primed Group and prior to the first dose and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
measure: Concentrations of Antibodies Against Cross-reactive Pneumococcal Serotypes.
timeFrame: Prior to and one month after the booster immunisation for the Synflorix/Infanrix primed Group and prior to the first dose and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
measure: Opsonophagocytic Activity Against Vaccine Pneumococcal Serotypes.
timeFrame: One month after the booster immunisation for the Synflorix/Infanrix primed Group and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
measure: Opsonophagocytic Activity Against Cross-reactive Pneumococcal Serotypes.
timeFrame: One month after the booster immunisation for the Synflorix/Infanrix primed Group and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
measure: Concentration of Antibodies Against Protein D (PD).
timeFrame: Prior to and one month after the booster immunisation for the Synflorix/Infanrix primed Group and prior to the first dose and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
measure: Number of Subjects Reporting Any and Grade 3 Solicited Local AEs.
timeFrame: Within 4 days (Days 0-3) after vaccination.
measure: Number of Subjects Reporting Any, Grade 3 and Related Solicited General AEs.
timeFrame: Within 4 days (Days 0-3) after vaccination.
measure: Number of Subjects Reporting Unsolicited AEs.
timeFrame: Within 31 days (Days 0-30) after vaccination
measure: Number of Subjects Reporting Serious Adverse Events (SAEs).
timeFrame: During the entire study period, from the vaccination visit at Day 0 up to the end of the follow-up visit at Month 1 for the Synflorix/Infanrix primed Group and up to Month 3 for the Synflorix/Infanrix unprimed Group.
Other outcomes:
Locations:
city: Ikeja / Lagos
country: Nigeria
facility: GSK Investigational Site
Study officials:
affiliation: GlaxoSmithKline
name: GSK Clinical Trials
role: STUDY_DIRECTOR
References:
citation: Odusanya OO, Kuyinu YA, Kehinde OA, Shafi F, Francois N, Yarzabal JP, Dobbelaere K, Ruggeberg JU, Borys D, Schuerman L. Safety and immunogenicity of 10-valent pneumococcal nontypeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) in Nigerian children: Booster dose and 2-dose catch-up regimens in the second year of life. Hum Vaccin Immunother. 2014;10(3):757-66. doi: 10.4161/hv.27276. Epub 2013 Dec 4.