Clinical Trial Results:
Immunogenicity of the Purified Vero Rabies Vaccine – Serum Free in Comparison with the Reference Purified Vero Rabies Vaccine in Pre-exposure Use in Healthy Adults
Summary
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EudraCT number |
2009-009877-85 |
Trial protocol |
FR |
Global end of trial date |
14 Feb 2011
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Results information
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Results version number |
v1(current) |
This version publication date |
05 Feb 2016
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First version publication date |
04 Feb 2015
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
VRV01
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT00948272 | ||
WHO universal trial number (UTN) |
U1111-1111-4382 | ||
Sponsors
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Sponsor organisation name |
Sanofi Pasteur SA
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Sponsor organisation address |
2, Avenue Pont Pasteur, Lyon cedex 07, France, F-69367
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Public contact |
Director, Clinical Development, Sanofi Pasteur SA, 33 4 37 37 5851, sylvie.pichon@sanofipasteur.com
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Scientific contact |
Director, Clinical Development, Sanofi Pasteur SA, 33 4 37 37 5851, sylvie.pichon@sanofipasteur.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
20 Apr 2011
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Is this the analysis of the primary completion data? |
No
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Global end of trial reached? |
Yes
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Global end of trial date |
14 Feb 2011
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
To demonstrate that VRVg (PR1) is at least as immunogenic as the reference vaccine, Verorab (PR2), in terms of seroconversion rate at Day 42, i.e. 14 days after the last vaccination of primary vaccination series.
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Protection of trial subjects |
Only subjects that met all the study inclusion and none of the exclusion criteria were randomized and vaccinated in the study. Vaccinations were performed by qualified and trained study personnel. Subjects with allergy to any of the vaccine components were not vaccinated. After vaccination, subjects were kept under clinical observation for 30 minutes to ensure their safety. Appropriate medical equipment was available on site in case of any immediate allergic reactions.
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Background therapy |
Not applicable | ||
Evidence for comparator |
Verorab, licensed since 1985 and also marketed as Vaccin Rabique Pasteur in France, was used as a reference vaccine. | ||
Actual start date of recruitment |
20 Jul 2009
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
No
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
France: 385
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Worldwide total number of subjects |
385
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EEA total number of subjects |
385
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
0
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Adolescents (12-17 years) |
0
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Adults (18-64 years) |
385
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From 65 to 84 years |
0
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85 years and over |
0
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Recruitment
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Recruitment details |
Study subjects were enrolled from 20 July 2009 to 27 July 2009 in 6 clinical centers in France. | |||||||||||||||||||||||||||
Pre-assignment
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Screening details |
A total of 385 subjects who met all inclusion criteria and none of the exclusion criteria were randomized, 384 subjects were vaccinated. | |||||||||||||||||||||||||||
Period 1
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Period 1 title |
Overall trial (overall period)
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Is this the baseline period? |
Yes | |||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | |||||||||||||||||||||||||||
Roles blinded |
Subject, Investigator | |||||||||||||||||||||||||||
Blinding implementation details |
Neither the Investigator, the subjects, nor the Sponsor knew the vaccine administered. The product preparation and administration, and the assessment of safety were performed by 2 different individuals in separate rooms. The Investigator or delegate included subjects and evaluated the immediate safety post- vaccination. The nurse/vaccinator prepared and administered the vaccine in a separate room and had sole access to the product accountability forms.
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Arms
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Are arms mutually exclusive |
Yes
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Arm title
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VRVg | |||||||||||||||||||||||||||
Arm description |
Subjects aged 18 to 60 years who received three injections of Purified Vero Rabies Vaccine - Serum Free (VRVg) for primary series on Day 0, 7, and 28 and a VRVg booster 12 months after the first vaccine injection. | |||||||||||||||||||||||||||
Arm type |
Experimental | |||||||||||||||||||||||||||
Investigational medicinal product name |
Purified Vero Rabies Vaccine - Serum Free (VRVg)
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Investigational medicinal product code |
382
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Other name |
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Pharmaceutical forms |
Powder and suspension for suspension for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
0.5 mL dose, intramuscular, 3 injections on Day 0, 7, and 28 (primary series) and a booster 12 months after the first vaccine injection.
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Arm title
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Verorab | |||||||||||||||||||||||||||
Arm description |
Subjects aged 18 to 60 years who received three injections of Verorab for primary series on Day 0, 7, and 28 and randomized to receive either Verorab or VRVg booster 12 months after the first vaccine injection. | |||||||||||||||||||||||||||
Arm type |
Active comparator | |||||||||||||||||||||||||||
Investigational medicinal product name |
Verorab
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Investigational medicinal product code |
084
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Other name |
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Pharmaceutical forms |
Powder and solvent for suspension for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
0.5 mL dose, intramuscular, 3 injections on Day 0, 7, and 28 (primary series) and a booster with either vaccine at 12 months after the first vaccine injection.
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Investigational medicinal product name |
Purified Vero Rabies Vaccine - Serum Free (VRVg)
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Investigational medicinal product code |
382
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Other name |
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Pharmaceutical forms |
Powder and suspension for suspension for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
0.5 mL dose, intramuscular, 3 injections on Day 0, 7, and 28 (primary series) and a booster with either vaccine at 12 months after the first vaccine injection.
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Baseline characteristics reporting groups
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Reporting group title |
VRVg
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Reporting group description |
Subjects aged 18 to 60 years who received three injections of Purified Vero Rabies Vaccine - Serum Free (VRVg) for primary series on Day 0, 7, and 28 and a VRVg booster 12 months after the first vaccine injection. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Verorab
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Reporting group description |
Subjects aged 18 to 60 years who received three injections of Verorab for primary series on Day 0, 7, and 28 and randomized to receive either Verorab or VRVg booster 12 months after the first vaccine injection. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
VRVg
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Reporting group description |
Subjects aged 18 to 60 years who received three injections of Purified Vero Rabies Vaccine - Serum Free (VRVg) for primary series on Day 0, 7, and 28 and a VRVg booster 12 months after the first vaccine injection. | ||
Reporting group title |
Verorab
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Reporting group description |
Subjects aged 18 to 60 years who received three injections of Verorab for primary series on Day 0, 7, and 28 and randomized to receive either Verorab or VRVg booster 12 months after the first vaccine injection. |
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End point title |
Percentage of Healthy Adult Subjects Achieving Seroconversion After Primary Series Vaccination with Either Purified Vero Rabies Vaccine–Serum Free or Reference Purified Vero Rabies Vaccine in Pre-Exposure Use | |||||||||||||||
End point description |
Rabies virus neutralizing antibody titers were assessed using rapid fluorescent focus inhibition test (RFFIT). Seroconversion was defined as subject with a rabies virus neutralizing antibody (RVNA) titer ≥0.5 IU/mL on Day 42.
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End point type |
Primary
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End point timeframe |
Day 42 post-vaccination
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Statistical analysis title |
Non-inferiority of VRVg versus Verorab | |||||||||||||||
Comparison groups |
VRVg v Verorab
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Number of subjects included in analysis |
346
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [1] | |||||||||||||||
Method |
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Parameter type |
Mean difference (final values) | |||||||||||||||
Point estimate |
-0.4
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Confidence interval |
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level |
95% | |||||||||||||||
sides |
2-sided
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lower limit |
-2.4 | |||||||||||||||
upper limit |
2.7 | |||||||||||||||
Notes [1] - Non-inferiority concluded if the low limit of the two-sided 95% CI of the difference VRVg - Verorab for proportion of subjects with RVNA titer ≥0.5 IU/mL is > -5.0%. |
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End point title |
Geometric Mean Titers of Rabies Virus Neutralizing Antibodies (RVNA) Following Each Primary Series Vaccination with Either Purified Vero Rabies Vaccine – Serum Free or Reference Purified Vero Rabies Vaccine in Pre-exposure Use in Healthy Adult Subjects | ||||||||||||||||||||||||
End point description |
Rabies virus neutralizing antibody titers were assessed using rapid fluorescent focus inhibition test (RFFIT).
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End point type |
Secondary
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End point timeframe |
Day 0 (pre-vaccination) and Day 42, Month 6, and Month 12 post-vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects Achieving Seroconversion Before and After Primary Series Vaccination with Either Purified Vero Rabies Vaccine–Serum Free or Reference Purified Vero Rabies Vaccine in Pre-exposure Use | ||||||||||||||||||||||||
End point description |
Rabies virus neutralizing antibody titers were assessed using rapid fluorescent focus inhibition test (RFFIT). Seroconversion was defined as subject with a rabies virus neutralizing antibody (RVNA) titer ≥0.5 IU/mL.
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End point type |
Secondary
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End point timeframe |
Day 0 (pre-vaccination) and Day 42, Month 6, and Month 12 post-vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects Achieving Seroconversion After Primary Series with Either Purified Vero Rabies Vaccine–Serum Free (VRVg) or Reference Purified Vero Rabies Vaccine and Booster with VRVg | ||||||||||||||||||
End point description |
Rabies virus neutralizing antibody titers were assessed using rapid fluorescent focus inhibition test (RFFIT). Seroconversion was defined as subject with a rabies virus neutralizing antibody (RVNA) titer ≥0.5 IU/mL.
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End point type |
Secondary
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End point timeframe |
Month 12 and Month 12 + 14 days post-vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Healthy Adult Subjects achieving Seroconversion Following Primary Series and Booster with Either Purified Vero Rabies Vaccine–Serum Free or Reference Purified Vero Rabies Vaccine | ||||||||||||||||||
End point description |
Rabies virus neutralizing antibody titers were assessed using rapid fluorescent focus inhibition test (RFFIT). Seroconversion was defined as subject with a rabies virus neutralizing antibody (RVNA) titer ≥0.5 IU/mL.
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End point type |
Secondary
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End point timeframe |
Month 12 and Month 12 + 14 days post-vaccination
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No statistical analyses for this end point |
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End point title |
Geometric Mean Titers of Rabies Virus Neutralizing Antibodies (RVNA) After Primary Series with Either Purified Vero Rabies Vaccine – Serum Free (VRVg) or Reference Purified Vero Rabies Vaccine and Booster with VRVg in Healthy Adult Subjects | ||||||||||||||||||
End point description |
Rabies virus neutralizing antibody titers were assessed using rapid fluorescent focus inhibition test (RFFIT).
The booster vaccine for this outcome is the Purified Vero Rabies Vaccine – Serum Free (VRVg)
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End point type |
Secondary
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End point timeframe |
Month 12 and Month 12 + 14 days post-vaccination
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No statistical analyses for this end point |
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End point title |
Geometric Mean Titers of Rabies Virus Neutralizing Antibodies (RVNA) Following Primary Series Vaccination and Booster Vaccination with Either Purified Vero Rabies Vaccine – Serum Free or the Reference Purified Vero Rabies Vaccine | ||||||||||||||||||
End point description |
Rabies virus neutralizing antibody titers were assessed using rapid fluorescent focus inhibition test (RFFIT).
The booster vaccine was the same as same primary vaccine for this outcome.
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End point type |
Secondary
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End point timeframe |
Month 12 and Month 12 + 14 days post-vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Healthy Adult Subjects Reporting Solicited Injection-site or Systemic Reactions Following Primary Series Vaccination with Either Purified Vero Rabies Vaccine – Serum Free (VRVg) or the Reference Purified Vero Rabies Vaccine | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
Solicited injection site: Pain, Erythema, and Swelling. Solicited systemic reactions: Fever, Headache, Malaise, and Myalgia. Severe injection site: Pain – Significant; prevents daily activity; Erythema and Swelling – >10 cm. Severe systemic reactions: Fever – ≥39.0°C; Headache, Malaise, and Myalgia – Significant; prevents daily activities.
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End point type |
Secondary
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End point timeframe |
Day 0 up to Day 7 post-vaccination
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No statistical analyses for this end point |
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Adverse events information
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Timeframe for reporting adverse events |
Adverse event data were collected from Day 0 (post-vaccination) up to Day 28 post-vaccination.
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Assessment type |
Non-systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
11.0
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Reporting groups
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Reporting group title |
VRVg
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Reporting group description |
Subjects aged 18 to 60 years who received three injections of Purified Vero Rabies Vaccine - Serum Free (VRVg) for primary series on Day 0, 7, and 28 and a VRVg booster 12 months after the first vaccine injection. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Verorab
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Reporting group description |
Subjects aged 18 to 60 years who received three injections of Verorab for primary series on Day 0, 7, and 28 and randomized to receive either Verorab or VRVg booster 12 months after the first vaccine injection. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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23 Jul 2009 |
Clarification on the volume of vaccine to be administered. The volume of the diluent was ≥0.5 mL; therefore, after reconstitution of the vaccine, the volume of the solution to be administered could vary from 0.49 to 0.57 mL. |
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15 Apr 2010 |
Updated information provided in the protocol and Informed Consent Form to ensure consistency across documents submitted to the Independent Ethics Committee and to French Health Authority. |
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported |