Clinical Trial Results:
A Phase I/IIa Sporozoite Challenge Study to Assess the Safety and Protective Efficacy of Concomitant Administration of the Combination Malaria Vaccine Candidate Regimen of RTS,S/AS01¬B + ChAd63 and MVA encoding ME-TRAP and also RTS,S/AS01B alone
Summary
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EudraCT number |
2014-001301-40 |
Trial protocol |
GB |
Global end of trial date |
16 Oct 2015
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Results information
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Results version number |
v1(current) |
This version publication date |
30 Oct 2016
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First version publication date |
30 Oct 2016
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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 |
VAC059
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT02252640 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
University of Oxford
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Sponsor organisation address |
CTRG, Old Road, Oxford, United Kingdom, OX3 7LE
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Public contact |
Professor Adrian Hill, University of Oxford, 01865 617610, adrian.hill@ndm.ox.ac.uk
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Scientific contact |
Professor Adrian Hill, University of Oxford, 01865 617610, adrian.hill@ndm.ox.ac.uk
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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 |
16 Oct 2015
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
16 Oct 2015
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Global end of trial reached? |
Yes
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Global end of trial date |
16 Oct 2015
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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 establish whether the combination immunization regimen with ChAd63/MVA ME-TRAP given concomitantly with two different dosing regimens of RTS,S/AS01B, and of RTS,S/AS01B alone at either full standard dose or with a reduced third dose can demonstrate safety and efficacy against malaria sporozite challenge, in healthy malaria naive volunteers.
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Protection of trial subjects |
- Volunteers given at least 24 hours to read VIS before being seen and then given plenty of opportunity to ask questions prior to agreeing to take part in a study.
- Screening visit including full medical history, physical examination and baseline blood tests to ensure volunteers are healthy prior to enrolment.
- Vaccination carried out in clinical environment with staff trained in resuscitation in case of allergic reaction.
- Safety review prior to dose escalations (LSM)
- Total blood volume taken during study kept to volume that should not compromise healthy volunteers (i.e. less than regular donation to blood transfusion service).
- Volunteers observed for 30 mins - 2 hours (depending on trial) after vaccination to monitor for any immediate adverse effects.
- Volunteers seen within 1 – 3 days of vaccination (most trials) for safety review and provided with 24/7 contact number for trial clinician and emergency contact card for the department.
- ECG and cholesterol checked prior to enrolment to aid cardiac risk assessment
- Age range 18 – 45 years (tighter than for Phase I)
- Volunteers given emergency contact card detailing that they have been infected with malaria.
- Volunteers seen twice daily once blood stage malaria is possible with twice daily malaria films and PCR
- Malaria treated promptly when diagnosed with highly efficacious medication and at least half of doses directly observed.
- Volunteers provided with symptomatic treatment (antipyretic/analgesic and antiemetic) in case of malaria symptoms.
- Volunteers followed up until at least 2 consecutive negative blood films seen.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
05 Jan 2015
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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 |
United Kingdom: 45
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Worldwide total number of subjects |
45
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EEA total number of subjects |
45
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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) |
45
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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 |
The planned trial period is 11 to 13 months from the first study visit, provided if any group 1-4 volunteers are sterilely protected at first challenge, and undergo re-challenge. Without re-challenge, the planned trial period is 8 months from first vaccination. | ||||||||||||||||||||||||||||||
Pre-assignment
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Screening details |
Inclusion / Exclusion criteria Informed consent Medical History Physical Examination Urinalysis Β-HCG urine test (women only) Review contraindications Physical observations HBV,HCV,HIV Haematology Biochemistry | ||||||||||||||||||||||||||||||
Period 1
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Period 1 title |
Week 0
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Is this the baseline period? |
Yes | ||||||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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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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Group 1 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) in week 0 followed by the same dose in week 4 and 8 and malaria challenge in week 11 | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Arm title
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Group 2 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) in weeks 0 and 4 followed by the 1/5th of the standard dose in week 8 and malaria challenge in week 11 | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Arm title
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Group 3 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and 8 & malaria challenge in week 11 | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Arm title
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Group 4 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Arm title
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Group 5 | ||||||||||||||||||||||||||||||
Arm description |
The arm was the control arm and the volunteers in this arm did not receive any experimental medication. | ||||||||||||||||||||||||||||||
Arm type |
No intervention | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
No investigational medicinal product assigned in this arm
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Period 2
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Period 2 title |
Week 4
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Is this the baseline period? |
No | ||||||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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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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Group 2 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) in weeks 0 and 4 followed by the 1/5th of the standard dose in week 8 and malaria challenge in week 11 | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01, 1/5th standard dose of RTS,S/AS01B will contain 10mcg of RTS,S and one fifth of the standard dose of AS01
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Arm title
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Group 3 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and 8 & malaria challenge in week 11 less | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Arm title
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Group 4 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Notes [1] - The number of subjects starting the period is not consistent with the number completing the preceding period. It is expected the number of subjects starting the subsequent period will be the same as the number completing the preceding period. Justification: Subject numbers completing each period differes from previous due to inclusion of control arm which received challenge agent but no IMP. |
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Period 3
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Period 3 title |
Week 8
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Is this the baseline period? |
No | ||||||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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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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Group 3 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and 8 & malaria challenge in week 11 | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01,
ChAd63 ME-TRAP will be given intramuscularly at a dose of 5 x 1010 vp
MVA ME-TRAP will be given intramuscularly at a dose of 2 x 108 pfu
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Arm title
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Group 4 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01.
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Notes [2] - The number of subjects starting the period is not consistent with the number completing the preceding period. It is expected the number of subjects starting the subsequent period will be the same as the number completing the preceding period. Justification: Subject numbers completing each period differes from previous due to inclusion of control arm which received challenge agent but no IMP. |
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Period 4
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Period 4 title |
Week 11
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Is this the baseline period? |
No | ||||||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Not blinded | ||||||||||||||||||||||||||||||
Arms
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Arm title
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Group 4 | ||||||||||||||||||||||||||||||
Arm description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
RTS,S/AS01B
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Solution for injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
The standard dose of RTS,S/AS01B will contain 50mcg of RTS,S and standard adult dose of AS01,
ChAd63 ME-TRAP will be given intramuscularly at a dose of 5 x 1010 vp
MVA ME-TRAP will be given intramuscularly at a dose of 2 x 108 pfu
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Notes [3] - The number of subjects starting the period is not consistent with the number completing the preceding period. It is expected the number of subjects starting the subsequent period will be the same as the number completing the preceding period. Justification: Subject numbers completing each period differes from previous due to inclusion of control arm which received challenge agent but no IMP. |
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Baseline characteristics reporting groups
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Reporting group title |
Group 1
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) in week 0 followed by the same dose in week 4 and 8 and malaria challenge in week 11 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Group 2
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) in weeks 0 and 4 followed by the 1/5th of the standard dose in week 8 and malaria challenge in week 11 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Group 3
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and 8 & malaria challenge in week 11 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Group 4
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Group 5
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Reporting group description |
The arm was the control arm and the volunteers in this arm did not receive any experimental medication. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Group 1
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) in week 0 followed by the same dose in week 4 and 8 and malaria challenge in week 11 | ||
Reporting group title |
Group 2
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) in weeks 0 and 4 followed by the 1/5th of the standard dose in week 8 and malaria challenge in week 11 | ||
Reporting group title |
Group 3
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and 8 & malaria challenge in week 11 | ||
Reporting group title |
Group 4
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | ||
Reporting group title |
Group 5
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Reporting group description |
The arm was the control arm and the volunteers in this arm did not receive any experimental medication. | ||
Reporting group title |
Group 2
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) in weeks 0 and 4 followed by the 1/5th of the standard dose in week 8 and malaria challenge in week 11 | ||
Reporting group title |
Group 3
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and 8 & malaria challenge in week 11 less | ||
Reporting group title |
Group 4
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | ||
Reporting group title |
Group 3
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and 8 & malaria challenge in week 11 | ||
Reporting group title |
Group 4
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. | ||
Reporting group title |
Group 4
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Reporting group description |
This arm received RTS,S/AS01B (Standard dose) & ChAd63 ME-TRAP in week 0 followed by RTS,S/AS01B (Standard dose) & MVA ME-TRAP in week 4 and RTS,S/AS01B (1/5 Standard dose) & MVA ME-TRAP in week 8. The malaria sporozite challenge to take place in week 11. |
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End point title |
Efficacy assessed by Controlled Human Malaria Infection (CHMI) with P. falciparum by mosquito bite [1] [2] | |||||||||||||||
End point description |
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End point type |
Primary
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End point timeframe |
Completely protected individuals are those who do not, by Day 23 following sporozoite challenge, develop blood stage infection
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Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Due to the confidential nature of this information, we have not provided this analysis at this time. The publication will be uploaded at a later date. [2] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Due to the confidential nature of this information, we have not provided this analysis at this time. The publication will be uploaded at a later date. |
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No statistical analyses for this end point |
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Adverse events information [1]
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Timeframe for reporting adverse events |
AEs collected and reviewed from day of vaccination to 90 days post malaria challenge.
SAEs reported to the sponsor within 24 hours of awareness.
SUSARs reported within 15 days of awareness (7 days for fatal or life threatening events)
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Assessment type |
Systematic | ||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||
Dictionary version |
17
|
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Frequency threshold for reporting non-serious adverse events: 1% | |||
Notes [1] - There are no non-serious adverse events recorded for these results. It is expected that there will be at least one non-serious adverse event reported. Justification: Due to the confidential nature of this information, we have not provided this data at this time. The publication will be uploaded at a later date. There were a total of 2 SAEs, none of which were realted to any of the IMPs or challenge procedures. |
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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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03 Nov 2014 |
To extend the shelf life of RTS,S lot for use in clinical trial |
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12 Nov 2014 |
To extend the shelf life of ChAd63 ME-TRAP for use in trial |
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22 Dec 2014 |
Change has been made to the window period for the second and third vaccination- extended from +2 days to +7 days to decrease the loss to follow-up |
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09 Feb 2015 |
To extend the shelf life of MVA ME-TRAP lot for a further year |
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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 |