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Study to Evaluate Persistence of Antibodies After Vaccination With Meningococcal Vaccine GSK 134612

1 marzo 2017 aggiornato da: GlaxoSmithKline

Persistence of Antibodies After Vaccination With GSK Biologicals' Meningococcal Vaccine GSK134612 in Adolescents and Young Adults

Subjects were previously vaccinated at 11 to 17 years of age. This extension phase starts 24 months after vaccination and the subjects who were vaccinated in the primary study will be enrolled in this extension phase. No new subjects will be enrolled.

Panoramica dello studio

Stato

Completato

Condizioni

Intervento / Trattamento

Descrizione dettagliata

Subjects were previously vaccinated at 11 to 17 months of age with GSK Biologicals' meningococcal vaccine 134612 or with Mencevax™. This extension phase starts 24 months after vaccination and the subjects who were vaccinated in the primary study will be enrolled in this extension phase. No new studies will be enrolled. The subjects will have 4 blood samples taken: at 24, 36, 48 and 60 months after vaccination.

Tipo di studio

Interventistico

Iscrizione (Effettivo)

697

Fase

  • Fase 3

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

  • Filippine
      • Muntinlupa, Filippine, 1781
        • GSK Investigational Site
  • India
      • Goa, India, 403202
        • GSK Investigational Site
      • Indore, India, 452001
        • GSK Investigational Site
      • New Delhi, India, 110002
        • GSK Investigational Site
      • Pune, India, 411 011
        • GSK Investigational Site

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 11 anni a 17 anni (Bambino)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

  • Subjects who the investigator believes that they and/or their parent(s)/guardian(s) can and will comply with the requirements of the protocol should be enrolled in the study.
  • A male or female having been vaccinated with a meningococcal vaccine in the primary study 109069.
  • Written informed consent obtained from parent(s)/guardian(s) of the subject and written informed assent obtained from the subject if the subject is less than 18 years of age, or written informed consent obtained from the subject if the subject has achieved the 18th birthday.
  • 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 (drug or vaccine) within 30 days preceding the subject's first visit.
  • History of meningococcal disease; such cases will be documented.
  • Administration of a meningococcal polysaccharide or a meningococcal polysaccharide conjugate vaccine since previous vaccination in study 109069.
  • Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history.
  • Administration of immunoglobulins and/or any blood products within the three months preceding the subject's first visit.
  • Bleeding disorders, such as thrombocytopenia, or subjects on anti-coagulant therapy
  • Subjects who withdrew consent to be contacted for follow-up studies.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Prevenzione
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Group A
Subjects who received GSK Biologicals' meningococcal vaccine 134612 in the primary vaccination study 109069.
Procedura: Blood Sampling
A blood sample will be taken yearly at each long-term follow-up visit (i.e. Year 2 through Year 5) after vaccination during the primary study. No vaccines are administered in the long-term follow-up study
Comparatore attivo: Group B
Subjects who received MencevaxTM ACWY in the primary vaccination study 109069.
Procedura: Blood Sampling
A blood sample will be taken yearly at each long-term follow-up visit (i.e. Year 2 through Year 5) after vaccination during the primary study. No vaccines are administered in the long-term follow-up study

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Number of Seroprotected Subjects Against the Vaccine Meningococcal Serogroups
Lasso di tempo: At Month 24 post primary dose
A seroprotected subject was defined as a subject who had anti-meningococcal serogroups A (MenA), C (MenC), W-135 (MenW-135) and Y (MenY) antibody titers equal to or above (≥) the cut-off value of 1:8. The persistence of serum bactericidal antibodies was evaluated using baby rabbit complement (rSBA) titers. The blood analyses were performed at the GSK Biologicals' laboratory.
At Month 24 post primary dose
Number of Seroprotected Subjects Against the Vaccine Meningococcal Serogroups
Lasso di tempo: At Month 36 post primary dose
A seroprotected subject was defined as a subject who had anti-meningococcal serogroups A (MenA), C (MenC), W-135 (MenW-135) and Y (MenY) antibody titers equal to or above (≥) the cut-off value of 1:8. The persistence of serum bactericidal antibodies was evaluated using baby rabbit complement (rSBA) titers. The blood analyses for this timepoint were performed solely at the Public Health of England's (PHE) laboratory.
At Month 36 post primary dose
Number of Seroprotected Subjects Against the Vaccine Meningococcal Serogroups
Lasso di tempo: At Month 48 post primary dose
A seroprotected subject was defined as a subject who had anti-meningococcal serogroups A (MenA), C (MenC), W-135 (MenW-135) and Y (MenY) antibody titers equal to or above (≥) the cut-off value of 1:8. The persistence of serum bactericidal antibodies was evaluated using baby rabbit complement (rSBA) titers. The blood analyses for this timepoint were performed solely at the Public Health of England's (PHE) laboratory.
At Month 48 post primary dose
Number of Seroprotected Subjects Against the Vaccine Meningococcal Serogroups
Lasso di tempo: At Month 60 post primary dose
A seroprotected subject was defined as a subject who had anti-meningococcal serogroups A (MenA), C (MenC), W-135 (MenW-135) and Y (MenY) antibody titers equal to or above (≥) the cut-off value of 1:8. The persistence of serum bactericidal antibodies was evaluated using baby rabbit complement (rSBA) titers. The blood analyses for this timepoint were performed solely at the Public Health of England's (PHE) laboratory.
At Month 60 post primary dose

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Number of Seropositive Subjects Against the Vaccine Meningococcal Serogroups
Lasso di tempo: At Months 24, 36, 48 and 60 post primary dose
A seropositive subject was defined as a subject who had the anti-meningococcal serogroups A (MenA), C (MenC), W-135 (MenW-135) and Y (MenY) antibody titers equal to or above (≥) the cut-off value of 1:128. The persistence of serum bactericidal antibodies was evaluated using baby rabbit complement (rSBA) titers. The blood analyses were performed at the Public Health of England's (PHE) laboratory and at GSK Biologicals' laboratory.
At Months 24, 36, 48 and 60 post primary dose
Antibody Titers Against the Vaccine Meningococcal Serogroups
Lasso di tempo: At Months 24, 36, 48 and 60 post primary dose
Seropositivity status was defined as the anti-meningococcal serogroups A (MenA), C (MenC), W-135 (MenW-135) and Y (MenY) titers equal to or above the cut-off value of 1:128. Antibody titers were presented as geometric mean titers (GMTs). The blood analyses were performed at the Public Health of England's (PHE) laboratory and at GSK Biologicals' laboratory.
At Months 24, 36, 48 and 60 post primary dose
Number of Subjects With Antibody Concentrations Against the Vaccine Polysaccharides
Lasso di tempo: At Month 24 post primary dose
Antibody concentrations against polysaccharide A (anti-PSA), polysaccharide C (anti-PSC), polysaccharide W-135 (anti-PSW-135) and polysaccharide Y (anti-PSY) assessed were equal to or above (≥) the cut-off values of 0.3 micrograms/milliliter (µg/mL ) and 2.0 micrograms/milliliter (µg/mL). Concentration of antibodies was determined by enzyme-linked immunosorbent assay (ELISA).
At Month 24 post primary dose
Antibody Concentrations Against the Vaccine Polysaccharides
Lasso di tempo: At Month 24 post primary dose
Antibody concentrations against polysaccharide A (anti-PSA), polysaccharide C (anti-PSC), polysaccharide W-135 (anti-PSW-135) and polysaccharide Y (anti-PSY) assessed were equal to or above (≥) the cut-off values of 0.3 micrograms/milliliter (µg/mL ) and 2.0 micrograms/milliliter (µg/mL). Concentration of antibodies was determined by enzyme-linked immunosorbent assay (ELISA).
At Month 24 post primary dose

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

GlaxoSmithKline

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio

1 settembre 2009

Completamento primario (Effettivo)

1 maggio 2013

Completamento dello studio (Effettivo)

1 maggio 2013

Date di iscrizione allo studio

Primo inviato

7 settembre 2009

Primo inviato che soddisfa i criteri di controllo qualità

9 settembre 2009

Primo Inserito (Stima)

10 settembre 2009

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

12 aprile 2017

Ultimo aggiornamento inviato che soddisfa i criteri QC

1 marzo 2017

Ultimo verificato

1 dicembre 2016

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • 112148

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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