"Prime Boost" Vaccination Strategy Combining Conjugated Anti- Pneumococcal Vaccine (s0) and Polysaccharide Anti- Pneumococcal Vaccine (s4) Compared to Polysaccharide Anti- Pneumococcal Vaccine Alone (s4) In Patients With Common Variable Immunodeficiency (EVAD)

Randomised, Multicentric, Phase ii Study of the Immunogenicity of a "Prime Boost" Vaccination Strategy Combining Conjugated Anti- Pneumococcal Vaccine (s0) and Polysaccharide Anti- Pneumococcal Vaccine (s4) Compared to Polysaccharide Anti- Pneumococcal Vaccine Alone (s4) In Patients With Common Variable Immunodeficiency

The main objective of this study is to evaluate and to compare the specific antibody response to a " prime-boost " vaccine strategy combining the seven valence pneumococcal conjugate vaccine (PnCj) prime at W0 followed by the administration of the pneumococcal capsular polysaccharide vaccine (PPS) boost at W4, to the administration of the pneumococcal capsular polysaccharide vaccine (PPS) alone at W4 in patients with common variable immunodeficiency.

Study Overview

• Status: Terminated
• Conditions: Common Variable Immunodeficiency
• Intervention / Treatment: Biological: PPS; Biological: PnCJ PPS

Detailed Description

Main objective :

The main objective of this study is to evaluate and to compare the specific antibody response to a " prime-boost " vaccine strategy combining the seven valence pneumococcal conjugate vaccine (PnCj) prime at W0 followed by the administration of the pneumococcal capsular polysaccharide vaccine (PPS) boost at W4, to the administration of the pneumococcal capsular polysaccharide vaccine (PPS) alone at W4 in patients with common variable immunodeficiency.

Secondary objectives :

• Evaluation and comparison the specific antibody response to seven pneumococcal serotypes, shared by the PnCj and PPS vaccines (4, 6B, 9V, 14, 18C, 19F, 23F), and two serotypes of the PPS vaccine (1, 5) 4 weeks after the single (W8 for patients from Group 1) or the first vaccination (W4 for patients from group 2).
• Evaluation of the duration of the specific antibody response at week 24
• Evaluation of the T CD4 lymphocyte response (proliferation and cytokine production) to the CRM protein
• Study of the Immunoglobulin V gene repertoire (immunoscope) before and after vaccination.
• Safety of the vaccines
• Effect of the vaccine strategies on the frequency of Streptococcus pneumoniae infections (bronchitis, sinusitis and recurrent upper respiratory tract)

EXPERIMENTAL METHODS

Study design

Randomised, multicentric, controlled phase II study of the immunological efficacy of a "prime boost" strategy combining the sequential administration of the PnjC and PPS anti-pneumococcal vaccines, compared to the administration of the PPS vaccine alone, in patients with common variable immunodeficiency.

After randomisation (at W-4) 72 patients will be assigned to the two following groups:

• Group 1: patients will a single administration of the PPS (one dose at W4). 25 patients will be randomised in this group.
• Group 2: patients will receive a first boost with the PnCj (one dose at W0) and then one administration of the PPS vaccines (one dose at W4). 47 patients will be randomised in this group.

R : 1 :2 (Group1 :2)

The final evaluation of this study is at week 12; i.e 4 weeks after the administration of the PPS vaccine in the two groups of patients. A follow up of patients until week 48 will be proposed to patients in order to evaluate the duration of the antibody response at wek 48.

DURATION OF THE STUDY

• Inclusion period : 18 months
• vaccination period: 2 months
• Patients follow-up : 7 months

Number of patients : 72

PRIMARY AND SECONDARY EFFICACY ENDPOINTS

The pneumococcal conjugate vaccine (PnCj) vaccin contains the following 7 pneumococcal serotypes: 4, 6B, 9V, 14, 18C, 19F, 23F.

The pneumococcal capsular polysaccharide vaccine (PPS) contains 23 pneumococcal serotypes and shares the seven serotypes included in PnCJ.

Primary endpoint :

The primary end point of this study is the proportion of responders to each serotype contained in the PnjC vaccine in the two groups of this study according to 4 categories: 5-7; 3-4; 2-1 and 0. A responder is defined by a rise (at least two fold from baseline) of antibody titers specific to pneumococcal serotypes.

Secondary endpoints :

• The following parameters will be evaluated and compared in the two groups of the study : La réponse immunitaire anticorps vis-à-vis des différents sérotypes vaccinaux communs

  • geometric mean of the specific antibody titers
  • proportion of patients who experienced an increase of specific antibody levels >1 µg/ml
• Evaluation of the priming effect of the PnCj vaccine in the group 2
• Duration of the specific antibody reponses at week 24
• CD4 T lymphocyte responses to the CRM protein (proliferative and cytokine production) in the two groups of the study at weeks 0, 8 and 12.
• Safety of the vaccines
• Effect of the vaccine stategies on the frequency of Streptococcus pneumoniae infections (bronchitis, sinusitis and recurrent upper respiratory tract)

STATISTICAL CONSIDERATIONS

The initial hypothesis for this study is the superiority of the priming strategy. Expected responses are : 0% in group 1 (PPS alone) and 30% in group 2 (PnCj vace and PPS). The number of patients is based on power of 84%.

The primary end point is the proportion of responders to each serotype contained in the PnCj vaccine in the 2 groups. The percentage of patients in each group will be compared by a Fisher's exact test. Mann-Whitney test and Wilcoxon paired test will be used for the comparison of antibody levels and percentage of responding patients respectively.

• Study Type: Interventional
• Enrollment (Actual): 45
• Phase: Phase 2

Contacts and Locations

Study Locations

• France
  • Creteil, France, 94 010
    • Service d'Immunologie Clinique Hôpital Henri Mondor

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Age > 18 years and < 65 years
• Common variable immunodeficiency according to the WHO criteria,
• Patients treated with intravenous or subcutaneous immunoglobulin.
• Written informed consent
• Absence of acute infections, or other evolutive diseases related to the (cancer, auto-immune disease…)

Exclusion Criteria:

• IgG subclass deficiency
• IgA selective deficiency,
• Other primary humoral deficiency (X-linked agammaglobulinemia, Hyper IgM syndrome),
• Long course treatment with corticosteroids > 5mg per day
• Chemotherapy in the last 3 years,
• Prior pneumococcal vaccination in the last 2 years.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: PREVENTION
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: NONE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
ACTIVE_COMPARATOR: PPS; Group 1: patients will a single administration of the PPS (one dose at W4). 25 patients will be randomised in this group.	Biological: PPS; POLYSACCHARIDE ANTI- PNEUMOCOCCAL VACCINE
EXPERIMENTAL: PnCJ PPS; Group 2: patients will receive a first boost with the PnCj (one dose at W0) and then one administration of the PPS vaccines (one dose at W4). 47 patients will be randomised in this group.	Biological: PnCJ PPS; PRIMEBOOST CONJUGATED ANTI- PNEUMOCOCCAL VACCINE (Week 0) POLYSACCHARIDE ANTI- PNEUMOCOCCAL VACCINE (Week 4)

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
proportion of responders to each serotype	The primary end point of this study is the proportion of responders to each serotype contained in the PnjC vaccine in the two groups of this study according to 4 categories: 5-7; 3-4; 2-1 and 0. A responder is defined by a rise (at least two fold from baseline) of antibody titers specific to pneumococcal serotypes.	8 weeks

Collaborators and Investigators

• Sponsor: Institut National de la Santé Et de la Recherche Médicale, France

Study record dates

Study Major Dates

• Study Start: June 1, 2009
• Primary Completion (ACTUAL): March 1, 2013
• Study Completion (ACTUAL): March 1, 2013

Study Registration Dates

• First Submitted: December 8, 2011
• First Submitted That Met QC Criteria: December 8, 2011
• First Posted (ESTIMATE): December 9, 2011

Study Record Updates

• Last Update Posted (ESTIMATE): February 24, 2016
• Last Update Submitted That Met QC Criteria: February 23, 2016
• Last Verified: February 1, 2016

More Information

Terms related to this study

• Keywords: pneumococcal vaccine; Common variable immunodeficiency; prime boost
• Additional Relevant MeSH Terms: Immune System Diseases; Immunologic Deficiency Syndromes; Common Variable Immunodeficiency
• Other Study ID Numbers: RBM04-34; 2007-003235-23 (EUDRACT_NUMBER)