Clinical Trial Results:
Immunogenicity and Safety of a Tetravalent Dengue Vaccine Administered Concomitantly or Sequentially With Cervarix® in Healthy Female Subjects Aged 9 to 14 Years in Mexico
Summary
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EudraCT number |
2019-000994-22 |
Trial protocol |
Outside EU/EEA |
Global end of trial date |
25 Mar 2019
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Results information
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Results version number |
v1(current) |
This version publication date |
12 Jan 2020
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First version publication date |
12 Jan 2020
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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 |
CYD71
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT02979535 | ||
WHO universal trial number (UTN) |
U1111-1161-3455 | ||
Sponsors
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Sponsor organisation name |
Sanofi Pasteur
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Sponsor organisation address |
14, Espace Henry Vallée, Lyon, France, 69007
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Public contact |
Trial Transparency Team, Sanofi Pasteur, Contact-US@sanofi.com
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Scientific contact |
Trial Transparency Team, Sanofi Pasteur, Contact-US@sanofi.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? |
Yes
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
17 Oct 2019
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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 |
25 Mar 2019
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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 |
Cervarix immunogenicity: To demonstrate that the humoral immune response (in terms of geometric mean titers [GMTs]) to Cervarix after concomitant administration with the CYD dengue vaccine is non-inferior to the humoral immune response (in terms of GMTs) after sequential administration with the CYD dengue vaccine measured 28 days after the last dose of Cervarix.
CYD dengue vaccine immunogenicity: To demonstrate that the humoral immune response (in terms of GMTs) to the CYD dengue vaccine after concomitant administration with Cervarix is non-inferior to the humoral immune response (in terms of GMTs) to the CYD dengue vaccine after sequential administration with Cervarix measured 28 days after the last dose of the CYD dengue vaccine. Providing that the number of evaluable seropositive subjects allows a global power of at least 80% (otherwise analyses was to be descriptive).
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Protection of trial subjects |
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 also kept under clinical observation for 30 minutes to ensure their safety. Appropriate medical equipment was also available on site in case of any immediate allergic reactions.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
16 Nov 2016
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
Yes
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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 |
Mexico: 480
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Worldwide total number of subjects |
480
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EEA total number of subjects |
0
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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) |
446
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Adolescents (12-17 years) |
34
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Adults (18-64 years) |
0
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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 16 November 2016 to 13 March 2017 at 3 centres in Mexico. | |||||||||||||||||||||
Pre-assignment
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Screening details |
A total of 480 subjects were enrolled and randomised in this study. | |||||||||||||||||||||
Period 1
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Period 1 title |
Overall Study (overall period)
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Is this the baseline period? |
Yes | |||||||||||||||||||||
Allocation method |
Not applicable
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Blinding used |
Not blinded | |||||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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CYD Dengue Vaccine + Cervarix (Concomitant Administration) | |||||||||||||||||||||
Arm description |
Subjects received 3 doses of CYD dengue vaccine at Day 0, Month 6, and Month 12 and 2 doses of Cervarix concomitantly with the 2 first doses of CYD dengue vaccine. | |||||||||||||||||||||
Arm type |
Experimental | |||||||||||||||||||||
Investigational medicinal product name |
CYD Dengue Vaccine
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Investigational medicinal product code |
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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 |
Subcutaneous use
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Dosage and administration details |
0.5 millilitres (mL), subcutaneous (SC) injection at Day 0, Month 6, and Month 12.
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Investigational medicinal product name |
Cervarix
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Suspension for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
0.5 mL, intramuscular (IM) injection at Day 0 and Month 6.
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Arm title
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CYD Dengue Vaccine + Cervarix (Sequential Administration) | |||||||||||||||||||||
Arm description |
Subjects received 3 doses of CYD dengue vaccine at Month 1, Month 7, and Month 13 along with the 2 doses of Cervarix at Day 0 and Month 6 sequentially (i.e., one month before) to each of the 2 first doses of CYD dengue vaccine. | |||||||||||||||||||||
Arm type |
Experimental | |||||||||||||||||||||
Investigational medicinal product name |
CYD Dengue Vaccine
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Investigational medicinal product code |
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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 |
Subcutaneous use
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Dosage and administration details |
0.5 mL, SC injection at Months 1, 7, and 13.
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Investigational medicinal product name |
Cervarix
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Suspension for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
0.5 mL, IM injection at Day 0 and Month 6.
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Baseline characteristics reporting groups
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Reporting group title |
CYD Dengue Vaccine + Cervarix (Concomitant Administration)
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Reporting group description |
Subjects received 3 doses of CYD dengue vaccine at Day 0, Month 6, and Month 12 and 2 doses of Cervarix concomitantly with the 2 first doses of CYD dengue vaccine. | ||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Reporting group description |
Subjects received 3 doses of CYD dengue vaccine at Month 1, Month 7, and Month 13 along with the 2 doses of Cervarix at Day 0 and Month 6 sequentially (i.e., one month before) to each of the 2 first doses of CYD dengue vaccine. | ||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
CYD Dengue Vaccine + Cervarix (Concomitant Administration)
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Reporting group description |
Subjects received 3 doses of CYD dengue vaccine at Day 0, Month 6, and Month 12 and 2 doses of Cervarix concomitantly with the 2 first doses of CYD dengue vaccine. | ||
Reporting group title |
CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Reporting group description |
Subjects received 3 doses of CYD dengue vaccine at Month 1, Month 7, and Month 13 along with the 2 doses of Cervarix at Day 0 and Month 6 sequentially (i.e., one month before) to each of the 2 first doses of CYD dengue vaccine. |
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End point title |
Geometric Mean Titers Against Each Cervarix Human Papillomavirus (HPV) Antigen (HPV-16 and HPV-18) 28 Days After Last Cervarix Vaccination in the Previously Dengue Seropositive Subjects | ||||||||||||||||||
End point description |
GMTs against each Cervarix HPV antigen (HPV-16 and HPV-18) were assessed using an enzyme-linked immunosorbent assay (ELISA) method. Dengue seropositive subjects at baseline were defined as those subjects with titers greater than or equal to (>=) 10 (1/dilutions [dil]) for at least one serotype with the parental dengue virus strain. Analysis was performed on per-protocol analysis set for Cervarix (PPX) which included subjects who received at least one dose of Cervarix vaccine and had no relevant protocol deviations.
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End point type |
Primary
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End point timeframe |
28 days after the last Cervarix vaccination
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Statistical analysis title |
Antigen HPV-16 | ||||||||||||||||||
Comparison groups |
CYD Dengue Vaccine + Cervarix (Concomitant Administration) v CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Number of subjects included in analysis |
232
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||
Method |
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Parameter type |
GMT ratio | ||||||||||||||||||
Point estimate |
0.947
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Confidence interval |
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level |
95% | ||||||||||||||||||
sides |
2-sided
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lower limit |
0.773 | ||||||||||||||||||
upper limit |
1.16 | ||||||||||||||||||
Statistical analysis title |
Antigen HPV-18 | ||||||||||||||||||
Comparison groups |
CYD Dengue Vaccine + Cervarix (Concomitant Administration) v CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Number of subjects included in analysis |
232
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||
Method |
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Parameter type |
GMT ratio | ||||||||||||||||||
Point estimate |
0.986
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Confidence interval |
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level |
95% | ||||||||||||||||||
sides |
2-sided
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lower limit |
0.803 | ||||||||||||||||||
upper limit |
1.21 |
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End point title |
GMTs Against Each Dengue Virus Serotype 28 Days After the Third CYD Dengue Vaccination in the Previously Dengue Seropositive Subjects | ||||||||||||||||||||||||
End point description |
The GMTs against each of the four parental dengue virus serotypes (Serotypes 1, 2, 3, and 4) of CYD dengue vaccine were assessed using the 50% plaque reduction neutralisation test (PRNT50) assay. Dengue seropositive subjects at baseline were defined as those subjects with titers >=10 (1/dil) for at least one serotype with the parental dengue virus strain. Analysis was performed on full analysis set (FAS) which included subjects who received at least one dose of the study vaccine. Here, 'number of subject analysed' signifies subjects evaluable for this endpoint.
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End point type |
Primary
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End point timeframe |
28 days after third CYD dengue vaccination
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Statistical analysis title |
Dengue Virus Serotype 1 | ||||||||||||||||||||||||
Comparison groups |
CYD Dengue Vaccine + Cervarix (Concomitant Administration) v CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Number of subjects included in analysis |
283
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||||||||
Method |
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Parameter type |
GMT ratio | ||||||||||||||||||||||||
Point estimate |
0.977
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.653 | ||||||||||||||||||||||||
upper limit |
1.46 | ||||||||||||||||||||||||
Statistical analysis title |
Dengue Virus Serotype 2 | ||||||||||||||||||||||||
Comparison groups |
CYD Dengue Vaccine + Cervarix (Sequential Administration) v CYD Dengue Vaccine + Cervarix (Concomitant Administration)
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Number of subjects included in analysis |
283
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||||||||
Method |
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Parameter type |
GMT ratio | ||||||||||||||||||||||||
Point estimate |
0.911
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.654 | ||||||||||||||||||||||||
upper limit |
1.27 | ||||||||||||||||||||||||
Statistical analysis title |
Dengue Virus Serotype 3 | ||||||||||||||||||||||||
Comparison groups |
CYD Dengue Vaccine + Cervarix (Concomitant Administration) v CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Number of subjects included in analysis |
283
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||||||||
Method |
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Parameter type |
GMT ratio | ||||||||||||||||||||||||
Point estimate |
0.921
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.727 | ||||||||||||||||||||||||
upper limit |
1.17 | ||||||||||||||||||||||||
Statistical analysis title |
Dengue Virus Serotype 4 | ||||||||||||||||||||||||
Comparison groups |
CYD Dengue Vaccine + Cervarix (Concomitant Administration) v CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Number of subjects included in analysis |
283
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Analysis specification |
Pre-specified
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Analysis type |
other | ||||||||||||||||||||||||
Method |
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Parameter type |
GMT ratio | ||||||||||||||||||||||||
Point estimate |
0.931
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Confidence interval |
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level |
95% | ||||||||||||||||||||||||
sides |
2-sided
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lower limit |
0.733 | ||||||||||||||||||||||||
upper limit |
1.18 |
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End point title |
GMTs Against Each Cervarix HPV Antigen (HPV-16 and HPV-18) at Day 0 and 28 Days After Each Cervarix Vaccination in the Previously Dengue Seropositive Subjects | ||||||||||||||||||||||||||||||
End point description |
The GMTs against each Cervarix HPV antigen (HPV-16 and HPV-18) were assessed using an ELISA method. Dengue seropositive subjects at baseline were defined as those subjects with titers >=10 (1/dil) for at least one serotype with the parental dengue virus strain. Analysis was performed on FAS population. Here, “number of subjects analysed” signifies number of subjects evaluable for this endpoint and 'n' signifies number of subjects with available data for specified categories.
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End point type |
Secondary
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End point timeframe |
Day 0 and 28 days after each Cervarix vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects With Seroconversion Against Each Cervarix HPV Antigen (HPV-16 and HPV-18) 28 Days After Each Dose of Cervarix Vaccination in the Previously Dengue Seropositive Subjects | ||||||||||||||||||||||||
End point description |
Neutralising antibodies against each Cervarix HPV antigen (HPV-16 and HPV-18) were assessed using an ELISA method. Seroconversion was defined as changing serostatus from seronegative at baseline to seropositive (greater than [>] lower limit of quantitation [LLOQ] of the assay) or >=4-fold rise in antibody titer if seropositive at baseline (i.e., at least one antibody levels against Cervarix HPV antigens > LLOQ at baseline). The LLOQ for HPV-16 and HPV-18 was <2.0 International Units per millilitres (IU/mL). Analysis was performed on FAS population. Here, “number of subjects analysed” signifies number of subjects evaluable for this endpoint and 'n' signifies number of subjects with available data for specified categories.
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End point type |
Secondary
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End point timeframe |
28 days after each Cervarix vaccination
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No statistical analyses for this end point |
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End point title |
GMTs Against Each Dengue Virus Serotype of CYD Dengue Vaccine at Day 0 and 28 Days After Each Dose of CYD Dengue Vaccination in the Previously Dengue Seropositive Subjects | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
The GMTs against each of the four parental dengue virus serotypes (Serotypes 1, 2, 3, and 4) of CYD dengue vaccine were assessed using the PRNT50 assay. Dengue seropositive subjects at baseline were defined as those subjects with titers >=10 (1/dil) for at least one serotype with the parental dengue virus strain. Analysis was performed on FAS population. Here, “number of subjects analysed” signifies number of subjects evaluable for this endpoint and 'n' signifies number of subjects with available data for specified categories.
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End point type |
Secondary
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End point timeframe |
Day 0 and 28 days after each CYD dengue vaccine vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects With Neutralising Antibody Titers >=10 (1/dilutions) Against Each of the 4 Dengue Virus Serotypes of CYD Dengue Vaccine at Day 0 And 28 Days After Each Dose of CYD Dengue Vaccination in the Previously Dengue Seropositive Subjects | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
Dengue neutralizing antibody levels against each of the 4 dengue virus serotypes (Serotypes 1, 2, 3, and 4) were measured by PRNT50. Dengue seropositive subjects at baseline were defined as those subjects with titers >=10 (1/dil) for at least one serotype with the parental dengue virus strain. Analysis was performed on FAS population. Here, “number of subjects analysed” signifies number of subjects evaluable for this endpoint and 'n' signifies number of subjects with available data for specified categories.
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End point type |
Secondary
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End point timeframe |
Day 0 and 28 days after each CYD dengue vaccine vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects With Neutralising Antibody Titers >=10 (1/dilutions) Against At Least 1,2,3, or 4 Dengue Virus Serotypes of CYD Dengue Vaccine at Day 0 And 28 Days After Each Dose of CYD Dengue Vaccination in Previously Dengue Seropositive Subjects | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
Dengue neutralising antibody levels against each of the 4 dengue virus serotypes (Serotypes 1, 2, 3, and 4) were measured by PRNT50. Dengue seropositive subjects at baseline were defined as those subjects with titers >=10 (1/dil) for at least one serotype with the parental dengue virus strain. Analysis was performed on FAS population. Here, “number of subjects analysed” signifies number of subjects evaluable for this endpoint and 'n' signifies number of subjects with available data for specified categories. Here, "vacc=vaccination" in the data categories.
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End point type |
Secondary
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End point timeframe |
Day 0 and 28 days after each CYD dengue vaccination
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects With Neutralising Antibody Titers Above Pre-defined Thresholds Against Each Dengue Virus Serotypes of CYD at Baseline And 28 Days After Each Dose of CYD Dengue Vaccination in Dengue Seropositive Subjects | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
Dengue neutralising antibody levels against each of the 4 dengue virus serotypes (Serotypes 1, 2, 3, and 4) were measured by PRNT50. Dengue seropositive subjects at baseline were defined as those subjects with titers <10, >=10, and >=100 (1/dil) for at least one serotype with the parental dengue virus strain. Analysis was performed on FAS population. Here, “number of subjects analysed” signifies number of subjects evaluable for this endpoint’ and 'n' signifies number of subjects with available data for specified categories. Here "vacc=vaccination" in the data categories.
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End point type |
Secondary
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End point timeframe |
Day 0 and 28 days after each CYD dengue vaccination
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No statistical analyses for this end point |
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End point title |
Number of Subjects Reporting Immediate Adverse Events (AEs) Following Vaccination With Cervarix or CYD Dengue Vaccine | |||||||||||||||||||||
End point description |
Any unsolicited systemic AE occurred during the first 30 minutes post-vaccination was recorded on the case report form (CRF) as immediate AE. Analysis was performed on safety analysis set which included those subjects who had received at least one dose of the study vaccines. Here, 'n' signifies number of subjects with available data for specified categories.
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End point type |
Secondary
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End point timeframe |
Within 30 minutes after each and any vaccination
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No statistical analyses for this end point |
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End point title |
Number of Subjects Reporting Solicited Injection Site Reactions Following Vaccination With Cervarix or CYD Dengue Vaccine | |||||||||||||||||||||||||||||||||||||||||||||
End point description |
Solicited injection site reactions included pain, erythema, and swelling. Analysis was performed on Safety analysis set. Here, 'n' signifies number of subjects with available data for specified categories.
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End point type |
Secondary
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End point timeframe |
Up to 7 days after each and any vaccination
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No statistical analyses for this end point |
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End point title |
Number of Subjects Reporting Solicited Systemic Reactions Following Vaccination With Cervarix or CYD Dengue Vaccine | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
Solicited systemic reactions included Fever, Headache, Malaise, Myalgia, and Asthenia. Analysis was performed on Safety analysis set. At Visit 1 and Visit 4, subjects from Group 1 received both Cervarix and CYD vaccination and subjects from Group 2 received only Cervarix vaccination. At Visit 2 and Visit 5, only subjects from Group 2 received CYD vaccination whereas the subjects from Group 1 received no vaccination. Analysis was performed on safety analysis set. Here 'n' signifies number of subjects with available data for specified categories. Here '99999' signifies that the subjects from Group 1 did not receive any vaccination at Visit 2 or Visit 5 and therefore were not evaluable.
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End point type |
Secondary
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End point timeframe |
Up to 14 days after any and each vaccination
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No statistical analyses for this end point |
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End point title |
Number of Subjects Reporting Unsolicited AEs Following Vaccination With Cervarix or CYD Dengue Vaccine | |||||||||||||||||||||||||||
End point description |
An unsolicited AE is an observed AE that does not fulfill the conditions prelisted in the CRF in terms of diagnosis and/or onset post-vaccination. At Visit 1 and Visit 4, subjects from Group 1 received both Cervarix and CYD vaccination and subjects from Group 2 received only Cervarix vaccination. At Visit 2 and Visit 5, only subjects from Group 2 received CYD vaccination whereas the subjects from Group 1 received no vaccination. Analysis was performed on safety analysis set. Here, 'n' signifies number of subjects with available data for specified categories. Here '99999' signifies that the subjects from Group 1 did not receive any vaccination at Visit 2 or Visit 5 and therefore were not evaluable.
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End point type |
Secondary
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End point timeframe |
Up to 28 days after any and each vaccination
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No statistical analyses for this end point |
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End point title |
Number of Subjects Reporting Non-serious Adverse Event of Special Interests (AESIs) Following Vaccination With Cervarix or CYD Dengue Vaccine | |||||||||||||||||||||
End point description |
AESI were AEs that were considered by the Sponsor to be relevant for the monitoring of the safety profile of the investigational vaccine. Analysis was performed on Safety analysis set.
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End point type |
Secondary
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End point timeframe |
Up to 7 days after any and each vaccination
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No statistical analyses for this end point |
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End point title |
Number of Subjects Reporting Serious Adverse Events (SAEs) Including Serious AESIs Following Vaccination With Cervarix or CYD Dengue Vaccine | |||||||||||||||
End point description |
An SAEs were AEs resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly or a medically important event. An AESIs were AEs that were considered by the Sponsor to be relevant for the monitoring of the safety profile of the investigational vaccine. Analysis was performed on Safety analysis set.
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End point type |
Secondary
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End point timeframe |
From Day 0 up to 6 months after the last vaccination
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No statistical analyses for this end point |
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End point title |
Number of Subjects Reporting Cases of Virologically Confirmed Dengue (VCD) Hospitalisation Following Vaccination With Cervarix or CYD Dengue Vaccine | |||||||||
End point description |
Hospitalised suspected dengue case was defined as an acute febrile illness with diagnosis of dengue requiring hospitalisation (with bed attribution). In such cases, 1 unplanned acute blood sample (within the first 5 days after fever onset) was collected for virological confirmation of hospitalised suspected dengue case. A suspected case was considered VCD if there was a detection of wild type dengue virus by dengue non-structural protein 1 antigen ELISA and/or dengue reverse transcriptase-polymerase chain reactions. Analysis was performed on Safety analysis set.
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End point type |
Secondary
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End point timeframe |
From Day 0 up to 6 months after the last 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 |
An AE data were collected from Day 0 up to Day 28 post any vaccination. Solicited Reaction (SR) were collected from Day 0 up to Day 14 post vaccination. SAEs were collected throughout the trial (up to Month 14, i.e,. 6 months after last CYD vaccination.
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Adverse event reporting additional description |
SR was an AE that was prelisted (i.e., solicited) in the electronic CRF and considered to be related to vaccination (adverse drug reaction). An unsolicited AE was an observed AE that did not fulfill the conditions prelisted in the eCRF (i.e., solicited) in terms of symptom and/or onset post-vaccination.Analysis was performed on safety analysis set.
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Assessment type |
Systematic | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
19.0
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Reporting groups
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Reporting group title |
CYD Dengue Vaccine + Cervarix (Sequential Administration)
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Reporting group description |
Subjects received 3 doses of CYD dengue vaccine at Month 1, Month 7, and Month 13 along with the 2 doses of Cervarix at Day 0 and Month 6 sequentially (i.e., one month before) to each of the 2 first doses of CYD dengue vaccine. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
CYD Dengue Vaccine + Cervarix (Concomitant Administration)
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Reporting group description |
Subjects received 3 doses of CYD dengue vaccine at Day 0, Month 6, and Month 12 and 2 doses of Cervarix concomitantly with the 2 first doses of CYD dengue vaccine. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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05 Feb 2018 |
In November 2017, IDMC recommended not to vaccinate any individuals with no prior dengue infection anymore, and to only continue vaccination in subjects with prior dengue infection. As a consequence, the Sponsor had amended the CYD71 study protocol to implement the recommendation from IDMC on February 2018. The study was put on hold between IDMC recommendation and approval of protocol amendment. It impacted Vaccination 3 for seronegative subjects.
According to Amendment 1, the following changes were made:
• All vaccinated subjects were informed about their baseline dengue serostatus.
• All subjects were asked about their willingness to continue participating in this study and to sign an amended Assent Form or informed consent form.
• Subjects identified as seronegative at baseline did not receive further CYD dengue vaccine doses. They continued in the study for a safety follow-up at 6 months post last dengue vaccine, and they had timely access to appropriate care in the event of suspected dengue, for 10 years from the date of last dengue vaccination whether they remained in the study or not.
• Subjects identified as seropositive at baseline who were eligible to continue dengue vaccination in the study were asked to consent for further CYD dengue vaccine injection. Subjects that consented to receive the third and last dose of CYD dengue vaccine completed the study as it was initially planned. Subjects that consented to remain in the study but preferred not to receive the last injection were able to continue in the study for safety follow-up at 6 months post last dengue vaccine dose.
• The study population for the non-inferiority was reduced to the dengue immune subjects (seropositive) compared to initial sample size. |
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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. | |||
Change of population for non-inferiority reduced to dengue immune subjects and time window for vaccination not reached (study hold),hence non-inferiority analysis not performed and immunogenicity analysis was performed on FAS,not on per protocol set. |