Clinical Trial Results:
COVID-19: A Phase 2b/3, Randomized, Observer-Blinded, Placebo-Controlled, Multicenter Clinical Study Evaluating the Efficacy and Safety of Investigational SARS-CoV-2 mRNA Vaccine CVnCoV in Adults 18 Years of Age and Older
Summary
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EudraCT number |
2020-003998-22 |
Trial protocol |
BE DE NL |
Global end of trial date |
10 Jun 2022
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Results information
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Results version number |
v1(current) |
This version publication date |
28 Dec 2022
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First version publication date |
28 Dec 2022
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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 |
CV-NCOV-004
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT04652102 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
CureVac SE
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Sponsor organisation address |
Schumannstr 27, Frankfurt, Germany, 60325
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Public contact |
Clinical Trial Information, CureVac SE, 0049 6976805870, clinicaltrials@curevac.com
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Scientific contact |
Clinical Trial Information, CureVac SE, 0049 6976805870, clinicaltrials@curevac.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 |
10 Jun 2022
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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 |
10 Jun 2022
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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 |
Primary Efficacy Objectives:
• To demonstrate the efficacy of a 2-dose schedule of CVnCoV in the prevention of first episodes of virologically-confirmed cases of COVID-19 of any severity in Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) naïve participants.
Primary Safety Objectives
• To evaluate the safety of CVnCoV administered as a 2-dose schedule to participants 18 years of age and older.
• To evaluate the reactogenicity of CVnCoV administered as a 2-dose schedule to participants 18 years of age and older participating in Phase 2b of the trial.
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Protection of trial subjects |
This trial was conducted in compliance with Good Clinical Practice (GCP), including the archiving of essential documents.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
11 Dec 2020
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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 |
Peru: 7452
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Country: Number of subjects enrolled |
Argentina: 6762
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Country: Number of subjects enrolled |
Mexico: 6293
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Country: Number of subjects enrolled |
Colombia: 4356
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Country: Number of subjects enrolled |
Panama: 3005
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Country: Number of subjects enrolled |
Dominican Republic: 1767
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Country: Number of subjects enrolled |
Spain: 2917
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Country: Number of subjects enrolled |
Germany: 2811
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Country: Number of subjects enrolled |
Netherlands: 2160
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Country: Number of subjects enrolled |
Belgium: 2157
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Worldwide total number of subjects |
39680
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EEA total number of subjects |
10045
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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) |
36740
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From 65 to 84 years |
2906
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85 years and over |
34
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Recruitment
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Recruitment details |
This trial was performed in Argentina, Belgium, Colombia, the Dominican Republic, Germany, Mexico, the Netherlands, Panama, Peru and Spain between 11 December 2020 and 10 June 2022. | |||||||||||||||||||||||||||||||||||||||||||||
Pre-assignment
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Screening details |
Of the 39680 participants who were randomized, 39540 participants received at least one dose vaccine. | |||||||||||||||||||||||||||||||||||||||||||||
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 |
Randomised - controlled
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Blinding used |
Double blind | |||||||||||||||||||||||||||||||||||||||||||||
Roles blinded |
Subject, Investigator | |||||||||||||||||||||||||||||||||||||||||||||
Blinding implementation details |
The trial was converted to an open-label design as of protocol amendment v4 (25 November 2021).
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Arms
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Are arms mutually exclusive |
Yes
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Arm title
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CVnCoV 12 μg Vaccine | |||||||||||||||||||||||||||||||||||||||||||||
Arm description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with CVnCoV 12 μg as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. | |||||||||||||||||||||||||||||||||||||||||||||
Arm type |
Experimental | |||||||||||||||||||||||||||||||||||||||||||||
Investigational medicinal product name |
CVnCoV
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
CVnCoV 12 μg administered as an intramuscular injection.
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Arm title
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Placebo | |||||||||||||||||||||||||||||||||||||||||||||
Arm description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with matching placebo as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. | |||||||||||||||||||||||||||||||||||||||||||||
Arm type |
Placebo | |||||||||||||||||||||||||||||||||||||||||||||
Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Injection
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Routes of administration |
Intramuscular use
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Dosage and administration details |
Matching placebo administered as an intramuscular injection.
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Notes [1] - The number of subjects reported to be in the baseline period are not the same as the worldwide number enrolled in the trial. It is expected that these numbers will be the same. Justification: The number of participants in the baseline period included only participants randomized into Phase 2b or 3 who received at least one dose of CVnCoV or placebo. [2] - The number of subjects at this milestone seems inconsistent with the number of subjects in the arm. It is expected that the number of subjects will be greater than, or equal to the number that completed, minus those who left. Justification: The milestones include Phase 2b and Phase 3 participants as well as participants who rolled over to the Open Label Phase. [3] - The number of subjects at this milestone seems inconsistent with the number of subjects in the arm. It is expected that the number of subjects will be greater than, or equal to the number that completed, minus those who left. Justification: The milestones include Phase 2b and Phase 3 participants as well as participants who rolled over to the Open Label Phase. [4] - The number of subjects at this milestone seems inconsistent with the number of subjects in the arm. It is expected that the number of subjects will be greater than, or equal to the number that completed, minus those who left. Justification: The milestones include Phase 2b and Phase 3 participants as well as participants who rolled over to the Open Label Phase. [5] - The number of subjects at this milestone seems inconsistent with the number of subjects in the arm. It is expected that the number of subjects will be greater than, or equal to the number that completed, minus those who left. Justification: The milestones include Phase 2b and Phase 3 participants as well as participants who rolled over to the Open Label Phase. |
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Baseline characteristics reporting groups
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Reporting group title |
CVnCoV 12 μg Vaccine
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Reporting group description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with CVnCoV 12 μg as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Placebo
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Reporting group description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with matching placebo as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
CVnCoV 12 μg Vaccine
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Reporting group description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with CVnCoV 12 μg as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. | ||
Reporting group title |
Placebo
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Reporting group description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with matching placebo as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. |
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End point title |
Number of Participants Who Experienced a First Episode of Virologically-confirmed {Reverse Transcription Polymerase Chain Reaction (RT-PCR) Positive} Case of COVID-19 of Any Severity | |||||||||
End point description |
A case of COVID-19 meeting the definition for primary efficacy analysis was defined as:
• Virologically-confirmed case of COVID-19 (of any severity) defined as a positive SARS-CoV-2 specific RT-PCR test in a person with clinically symptomatic COVID-19.
• Symptom onset ≥ 15 days after second trial vaccination.
• First episode of virologically-confirmed COVID-19, i.e. the participant must not have had a history of virologically confirmed COVID-19 illness at enrollment or have had developed a case of virologically-confirmed COVID-19 before 15 days after the second trial vaccination.
• Participant was SARS-CoV-2 naïve at baseline & Day 43 (defined as seronegative to N protein in the blood samples collected at baseline and Day 43).
• Primary efficacy cases were confirmed by an Adjudication Committee.
The analysis set used was the efficacy analysis set (EAS). Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine.
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End point type |
Primary
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End point timeframe |
Day 44 to Day 393
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Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
Proportion of cases coming from the CVnCoV group among all cases.
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Comparison groups |
Placebo v CVnCoV 12 μg Vaccine
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Number of subjects included in analysis |
25062
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Analysis specification |
Pre-specified
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Analysis type |
superiority [1] | |||||||||
Method |
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Parameter type |
Proportion | |||||||||
Point estimate |
0.364
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Confidence interval |
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level |
95.83% | |||||||||
sides |
2-sided
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lower limit |
0.299 | |||||||||
upper limit |
0.433 | |||||||||
Notes [1] - Derived from an exact 2-sided 95.826% Pearson-Clopper confidence interval (CI) on proportion of cases coming from the CVnCoV group among all cases. |
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Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
Vaccine efficacy (VE) calculated as VE = 1 – p/(1-p) *1/r where p represents the proportion of cases coming from the CVnCoV group among all cases and r represents the ratio of total follow-up time of subjects in the CVnCoV group over the total follow-up time of participants in the placebo group.
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Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
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Number of subjects included in analysis |
25062
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Analysis specification |
Pre-specified
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Analysis type |
superiority [2] | |||||||||
P-value |
= 0.016 [3] | |||||||||
Method |
Exact Binomial Test | |||||||||
Parameter type |
Vaccine Efficacy | |||||||||
Point estimate |
48.2
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Confidence interval |
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level |
95.83% | |||||||||
sides |
2-sided
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lower limit |
31 | |||||||||
upper limit |
61.4 | |||||||||
Notes [2] - 2-sided 95.826% CI on VE, derived from the exact 2-sided 95.826% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. [3] - 1-sided p-value from the exact binomial test on proportion of cases coming from the CVnCoV group among all cases (equivalent to a test on VE with H0: VE ≤30%). Statistically significant if lower than 0.02087. |
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End point title |
Number of Participants Who Experienced One or More Medically-attended Adverse Events (AE) [4] | |||||||||||||||
End point description |
Medically-attended AEs were defined as AEs with medically-attended visits that were not routine visits for physical examination or vaccination, such as visits for hospitalization, an emergency room visit, or an otherwise unscheduled visit to or from medical personnel (medical doctor) for any reason. Clinic visits for COVID-19 testing resulting in negative test results were not considered as medically attended visits, if there is no confirmed diagnosis and no prescribed concomitant medication.
The Investigator assessed the relationship between trial vaccine and occurrence of each AE.
The analysis set used was the safety analysis set (SAS). Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Day 1 to Day 211
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Notes [4] - 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: No comparative statistical analyses were planned. |
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No statistical analyses for this end point |
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End point title |
Number of Participants Who Experienced One or More Serious AE (SAE) [5] | |||||||||||||||
End point description |
An SAE was defined as any untoward medical occurrence that, at any dose:
• Resulted in death.
• Was life-threatening.
• Required inpatient hospitalization or prolongation of existing hospitalization.
• Resulted in persistent disability/incapacity.
• Was a congenital anomaly/birth defect in the offspring of the participant.
• Was an important medical event.
The Investigator assessed the relationship between trial vaccine and occurrence of each SAE.
The analysis set used was the SAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Day 1 to Day 393
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Notes [5] - 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: No comparative statistical analyses were planned. |
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No statistical analyses for this end point |
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End point title |
Intensity of SAEs as Per Investigator Assessment [6] | |||||||||||||||||||||
End point description |
An SAE was defined as any untoward medical occurrence that, at any dose:
• Resulted in death.
• Was life-threatening.
• Required inpatient hospitalization or prolongation of existing hospitalization.
• Resulted in persistent disability/incapacity.
• Was a congenital anomaly/birth defect in the offspring of the participant.
• Was an important medical event.
The Investigator made an assessment of intensity of each SAE reported during the trial. Each SAE was graded from Mild (Grade 1) to Severe (Grade 3), where higher grades indicated a worse outcome.
The analysis set used was the SAS including only participants who experienced SAEs. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Day 1 to Day 393
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Notes [6] - 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: No comparative statistical analyses were planned. |
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No statistical analyses for this end point |
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End point title |
Number of Participants Who Experienced One or More Adverse Event of Special Interest (AESI) [7] | |||||||||||||||
End point description |
AESIs included:
• AEs with a suspected immune-medicated etiology.
• Other AEs relevant to SARS-CoV-2 vaccine development or the target disease.
The Investigator assessed the relationship between trial vaccine and occurrence of each AESI.
The analysis set used was the SAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Day 1 to Day 393
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Notes [7] - 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: No comparative statistical analyses were planned. |
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No statistical analyses for this end point |
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End point title |
Number of Participants Who Experienced a Fatal SAE [8] | |||||||||
End point description |
A fatal SAE was defined as an SAE that resulted in death.
The analysis set used was the SAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Day 1 to Day 393
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Notes [8] - 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: No comparative statistical analyses were planned. |
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No statistical analyses for this end point |
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End point title |
Phase 2b Participants Only: Number of Participants Who Experienced One or More Solicited AE [9] | |||||||||||||||
End point description |
Solicited local AEs (injection site pain, redness, swelling, and itching) and solicited systemic AEs (fever, headache, fatigue, chills, myalgia, arthralgia, nausea/vomiting, and diarrhea) were recorded on the day of vaccination and the following 7 days using an eDiary.
The analysis set used was the SASsol. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Up to 7 days after vaccination (Days 1 to 7 and Days 29 to 36)
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Notes [9] - 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: No comparative statistical analyses were planned. |
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No statistical analyses for this end point |
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End point title |
Phase 2b Participants Only: Intensity of Solicited AEs as Per Investigator Assessment [10] | |||||||||||||||||||||||||||
End point description |
Solicited local AEs (injection site pain, redness, swelling, and itching) and solicited systemic AEs (fever, headache, fatigue, chills, myalgia, arthralgia, nausea/vomiting, and diarrhea) were recorded on the day of vaccination and the following 7 days using an eDiary.
The Investigator made an assessment of intensity of each solicited AE reported during the trial. Each solicited AE was graded from Mild (Grade 1) to Severe (Grade 3), where higher grades indicated a worse outcome.
The analysis set used was the SASsol including only participants who experienced solicited AEs. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Up to 7 days after vaccination (Days 1 to 7 and Days 29 to 36)
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Notes [10] - 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: No comparative statistical analyses were planned. |
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Notes [11] - Any Solicited Local AEs (Mild, Moderate and Severe) - N = 1699 [12] - Any Solicited Local AEs (Mild, Moderate and Severe) - N = 477 |
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No statistical analyses for this end point |
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End point title |
Phase 2b Participants Only: Number of Participants Who Experienced One or More Unsolicited AE [13] | |||||||||||||||
End point description |
eDiaries were used for collection of unsolicited AEs on each vaccination day and the following 28 days. In addition, participants received a prompt (by e.g., a phone call or text message) to verify whether the participants had any health concerns since the last visit. The Investigator assessed the relationship between trial vaccine and each occurrence of each AE.
The analysis set used was the SAS 2. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Up to 28 days after vaccination (Days 1 to 29 and Days 29 to 57)
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Notes [13] - 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: No comparative statistical analyses were planned. |
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No statistical analyses for this end point |
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End point title |
Phase 2b Participants Only: Intensity of Unsolicited AEs as Per Investigator Assessment [14] | |||||||||||||||||||||
End point description |
eDiaries were used for collection of unsolicited AEs on each vaccination day and the following 28 days. In addition, participants received a prompt (by e.g., a phone call or text message) to verify whether the participants had any health concerns since the last visit.
The Investigator made an assessment of intensity of each unsolicited AE reported during the trial. Each unsolicited AE was graded from Mild (Grade 1) to Severe (Grade 3), where higher grades indicated a worse outcome.
The analysis set used was the SAS 2. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
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End point type |
Primary
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End point timeframe |
Up to 28 days after vaccination (Days 1 to 29 and Days 29 to 57)
|
|||||||||||||||||||||
Notes [14] - 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: No comparative statistical analyses were planned. |
||||||||||||||||||||||
|
||||||||||||||||||||||
No statistical analyses for this end point |
|
||||||||||||||||
End point title |
Number of Participants Who Experienced One or More AEs Leading to Vaccine Withdrawal or Trial Discontinuation [15] | |||||||||||||||
End point description |
The analysis set used was the SAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
|
|||||||||||||||
End point type |
Primary
|
|||||||||||||||
End point timeframe |
Day 1 to Day 393
|
|||||||||||||||
Notes [15] - 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: No comparative statistical analyses were planned. |
||||||||||||||||
|
||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||||||||||||||||||||||||||
End point title |
Phase 2b Participants Only: Duration of Solicited AEs | ||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
Solicited local AEs (injection site pain, redness, swelling, and itching) and solicited systemic AEs (fever, headache, fatigue, chills, myalgia, arthralgia, nausea/vomiting, and diarrhea) were recorded on the day of vaccination and the following 7 days using an eDiary. Duration is calculated as consecutive days with a respective solicited AE regardless of the grade of the AE. AEs ongoing after Day 8 are included. In each case only the longest consecutive duration is displayed.
Solicited local AEs (CVnCoV 12 μg Vaccine, Placebo):
- Injection site pain N = 1674, 417
- Redness N = 89, 25
- Swelling N = 149, 17
- Itching N = 141, 93
Solicited systemic AEs (CVnCoV 12 μg Vaccine, Placebo):
- Fever N = 617, 13
- Headache N = 1541, 806
- Fatigue N = 1603, 845
- Chills N = 1011, 162
- Myalgia N = 1327, 378
- Arthralgia N = 578, 148
- Nausea/Vomiting N = 414, 151
- Diarrhea N = 376, 224
|
||||||||||||||||||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||||||||||||||||||
End point timeframe |
Up to 7 days after vaccination (Days 1 to 7 and Days 29 to 36)
|
||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
||||||||||
End point title |
Number of Participants Who Experienced a First Episode of Virologically-confirmed (RT-PCR Positive) Moderate to Severe Case of COVID-19 | |||||||||
End point description |
Moderate COVID-19 cases were defined by any one of the following:
• Shortness of breath or difficulty breathing.
• Respiratory rate ≥ 20 to < 30 breaths per minute.
• Abnormal SpO2 but still > 93% on room air at sea level.
• Clinical or radiographic evidence of lower respiratory tract disease.
• Radiologic evidence of deep vein thrombosis (DVT).
Severe COVID-19 cases were defined by any one of the following:
• Clinical signs at rest indicative of severe systemic illness (respiratory rate ≥ 30 breaths per minute, heart rate ≥ 125 per minute, SpO2 ≤ 93% on room air at sea level or PaO2/FIO2 < 300 mm Hg).
• Respiratory failure (defined as needing high flow-oxygen, noninvasive ventilation, mechanical ventilation or ECMO).
• Evidence of shock (SBP < 90mm Hg, DBP < 60 mmHg, or requiring vasopressors).
• Significant renal, hepatic, or neurologic dysfunction
• Admission to intensive care unit (ICU).
• Death.
The analysis set used was the EAS.
|
|||||||||
End point type |
Secondary
|
|||||||||
End point timeframe |
Day 44 to Day 393
|
|||||||||
|
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
Proportion of cases coming from the CVnCoV group among all cases.
|
|||||||||
Comparison groups |
Placebo v CVnCoV 12 μg Vaccine
|
|||||||||
Number of subjects included in analysis |
25062
|
|||||||||
Analysis specification |
Pre-specified
|
|||||||||
Analysis type |
superiority [16] | |||||||||
Method |
||||||||||
Parameter type |
Proportion | |||||||||
Point estimate |
0.245
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
0.133 | |||||||||
upper limit |
0.389 | |||||||||
Notes [16] - Derived from an exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
VE calculated as VE = 1 - p/(1-p) *1/r where p represents the proportion of cases coming from the CVnCoV group among all cases and r represents the ratio of total follow-up time of participants in the CVnCoV group over the total follow-up time of participants in the placebo group.
|
|||||||||
Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
|
|||||||||
Number of subjects included in analysis |
25062
|
|||||||||
Analysis specification |
Pre-specified
|
|||||||||
Analysis type |
superiority [17] | |||||||||
Method |
||||||||||
Parameter type |
Vaccine Efficacy | |||||||||
Point estimate |
70.7
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
42.5 | |||||||||
upper limit |
86.1 | |||||||||
Notes [17] - 2-sided 95% CI on VE, derived from the exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
|
||||||||||
End point title |
Number of Participants Who Experienced a First Episode of Virologically-confirmed (RT-PCR Positive) Severe Case of COVID-19 | |||||||||
End point description |
Severe COVID-19 cases were defined by any one of the following:
• Clinical signs at rest indicative of severe systemic illness (respiratory rate ≥ 30 breaths per minute, heart rate ≥ 125 per minute, SpO2 ≤ 93% on room air at sea level or PaO2/FIO2 < 300 mm Hg).
• Respiratory failure (defined as needing high flow-oxygen, noninvasive ventilation, mechanical ventilation or ECMO).
• Evidence of shock (SBP < 90mm Hg, DBP < 60 mmHg, or requiring vasopressors).
• Significant renal, hepatic, or neurologic dysfunction
• Admission to intensive care unit (ICU).
• Death.
The analysis set used was the EAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
|
|||||||||
End point type |
Secondary
|
|||||||||
End point timeframe |
Day 44 to Day 393
|
|||||||||
|
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
Proportion of cases coming from the CVnCoV group among all cases.
|
|||||||||
Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
|
|||||||||
Number of subjects included in analysis |
25062
|
|||||||||
Analysis specification |
Post-hoc
|
|||||||||
Analysis type |
superiority [18] | |||||||||
Method |
||||||||||
Parameter type |
Proportion | |||||||||
Point estimate |
0.286
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
0.084 | |||||||||
upper limit |
0.581 | |||||||||
Notes [18] - Derived from an exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
VE calculated as VE = 1 - p/(1-p) *1/r where p represents the proportion of cases coming from the CVnCoV group among all cases and r represents the ratio of total follow-up time of participants in the CVnCoV group over the total follow-up time of participants in the placebo group.
|
|||||||||
Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
|
|||||||||
Number of subjects included in analysis |
25062
|
|||||||||
Analysis specification |
Pre-specified
|
|||||||||
Analysis type |
superiority [19] | |||||||||
Method |
||||||||||
Parameter type |
Vaccine Efficacy | |||||||||
Point estimate |
63.8
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
-25.5 | |||||||||
upper limit |
91.7 | |||||||||
Notes [19] - 2-sided 95% CI on VE, derived from the exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
|
||||||||||
End point title |
Number of Participants Who Experienced a First Episode of Virologically-confirmed (RT-PCR Positive) Case of COVID-19 of Any Severity Due to Infection With "Wild Type" and "Alpha" SARS-CoV-2 Strains in SARS-CoV-2 Naïve Participants | |||||||||
End point description |
The characterization of SARS-CoV-2 variants were implemented by viral whole genome sequencing of nasopharyngeal swab samples of participants followed by comparison with previously sequenced and typified genomes.
The following phylogenetic clustering was applied:
1. “Wild type” virus: WT/D614G, lineages A.1/B.1 without the variant of concerns (VOCs) (i.e., without B.1.1.7 [Alpha], B.1.351 [Beta], B.1.429 [Epsilon]).
2. “UK” VOC: B.1.1.7 (Alpha).
A case of COVID-19 was defined as follows:
• Virologically-confirmed case of COVID-19 defined as a positive SARS-CoV-2 specific RT-PCR test in a person with clinically symptomatic COVID-19.
• Symptom onset ≥ 15 days after second vaccination.
• First episode of virologically-confirmed COVID-19.
• Participant was SARS-CoV-2 naïve at baseline and Day 43.
The analysis set used was the EAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlie
|
|||||||||
End point type |
Secondary
|
|||||||||
End point timeframe |
Day 44 to Day 393
|
|||||||||
|
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
Proportion of cases coming from the CVnCoV group among all cases.
|
|||||||||
Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
|
|||||||||
Number of subjects included in analysis |
25062
|
|||||||||
Analysis specification |
Pre-specified
|
|||||||||
Analysis type |
superiority [20] | |||||||||
Method |
||||||||||
Parameter type |
Proportion | |||||||||
Point estimate |
0.341
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
0.242 | |||||||||
upper limit |
0.452 | |||||||||
Notes [20] - Derived from an exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
VE calculated as VE = 1 - p/(1-p) *1/r where p represents the proportion of cases coming from the CVnCoV group among all cases and r represents the ratio of total follow-up time of participants in the CVnCoV group over the total follow-up time of participants in the placebo group.
|
|||||||||
Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
|
|||||||||
Number of subjects included in analysis |
25062
|
|||||||||
Analysis specification |
Pre-specified
|
|||||||||
Analysis type |
superiority [21] | |||||||||
Method |
||||||||||
Parameter type |
Vaccine Efficacy | |||||||||
Point estimate |
53.2
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
25.4 | |||||||||
upper limit |
71.2 | |||||||||
Notes [21] - 2-sided 95% CI on VE, derived from the exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
|
||||||||||
End point title |
Number of Participants Aged ≥ 61 Who Experienced a First Episode of Virologically-confirmed (RT-PCR Positive) Case of COVID-19 of Any Severity | |||||||||
End point description |
A case of COVID-19 was defined as follows:
• Virologically-confirmed case of COVID-19 (of any severity) defined as a positive SARS-CoV-2 specific RT-PCR test in a person with clinically symptomatic COVID-19.
• Symptom onset ≥ 15 days after second trial vaccination.
• First episode of virologically-confirmed COVID-19, i.e. the participant must not have had a history of virologically-confirmed COVID-19 illness at enrollment or have had developed a case of virologically-confirmed COVID-19 before 15 days after the second trial vaccination.
• Participant was SARS-CoV-2 naïve at baseline and Day 43 (defined as seronegative to N protein in the blood samples collected at baseline and Day 43).
The analysis set used was the EA including only participants who were aged ≥ 61. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
|
|||||||||
End point type |
Secondary
|
|||||||||
End point timeframe |
Day 44 to Day 393
|
|||||||||
|
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
Proportion of cases coming from the CVnCoV group among all cases.
|
|||||||||
Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
|
|||||||||
Number of subjects included in analysis |
2499
|
|||||||||
Analysis specification |
Pre-specified
|
|||||||||
Analysis type |
superiority [22] | |||||||||
Method |
||||||||||
Parameter type |
Proportion | |||||||||
Point estimate |
0.571
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
0.34 | |||||||||
upper limit |
0.782 | |||||||||
Notes [22] - Derived from an exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
||||||||||
Statistical analysis title |
CVnCoV 12 μg Vaccine Versus Placebo | |||||||||
Statistical analysis description |
VE calculated as VE = 1 - p/(1-p) *1/r where p represents the proportion of cases coming from the CVnCoV group among all cases and r represents the ratio of total follow-up time of participants in the CVnCoV group over the total follow-up time of participants in the placebo group.
|
|||||||||
Comparison groups |
CVnCoV 12 μg Vaccine v Placebo
|
|||||||||
Number of subjects included in analysis |
2499
|
|||||||||
Analysis specification |
Pre-specified
|
|||||||||
Analysis type |
superiority [23] | |||||||||
Method |
||||||||||
Parameter type |
Vaccine Efficacy | |||||||||
Point estimate |
-11.8
|
|||||||||
Confidence interval |
||||||||||
level |
95% | |||||||||
sides |
2-sided
|
|||||||||
lower limit |
-200.5 | |||||||||
upper limit |
56.7 | |||||||||
Notes [23] - 2-sided 95% CI on VE, derived from the exact 2-sided 95% Pearson-Clopper CI on proportion of cases coming from the CVnCoV group among all cases. |
|
|||||||||||||||||||
End point title |
Burden of Disease (BoD) Score #1 Based on First Episodes of Virologically-confirmed (RT-PCR Positive) Cases of COVID-19 | ||||||||||||||||||
End point description |
Score #1 was defined as no disease (not infected or asymptomatic infection) = 0; mild or moderate disease = 1; severe disease = 2.
The analysis set used was the EAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
|
||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||
End point timeframe |
Day 44 to Day 393
|
||||||||||||||||||
|
|||||||||||||||||||
No statistical analyses for this end point |
|
||||||||||||||||||||||
End point title |
BoD Score #2 Based on First Episodes of Virologically-confirmed (RT-PCR Positive) Cases of COVID-19 | |||||||||||||||||||||
End point description |
Score #2 was defined as no disease (not infected or asymptomatic infection) = 0; disease without hospitalization = 1; disease with hospitalization = 2; death = 3.
The analysis set used was the EAS. Participants were censored at the first day after unblinding or at the day after receiving the authorized/licensed vaccine, whichever was earlier.
|
|||||||||||||||||||||
End point type |
Secondary
|
|||||||||||||||||||||
End point timeframe |
Day 44 to Day 393
|
|||||||||||||||||||||
|
||||||||||||||||||||||
No statistical analyses for this end point |
|
||||||||||
End point title |
Number of Participants Who Experienced a Virologically-confirmed (RT-PCR Positive) Case of COVID-19 of Any Severity With Symptom Onset at Any Time After the First Study Vaccination | |||||||||
End point description |
case of COVID-19 was defined as follows:
• Virologically-confirmed case of COVID-19 (of any severity) defined as a positive SARS-CoV-2 specific RT-PCR test in a person with clinically symptomatic COVID-19.
• Symptom onset ≥ 15 days after second trial vaccination.
• First episode of virologically-confirmed COVID-19, i.e. the participant must not have had a history of virologically-confirmed COVID-19 illness at enrollment or have had developed a case of virologically-confirmed COVID-19 before 15 days after the second trial vaccination.
• Participant was SARS-CoV-2 naïve at baseline and Day 43 (defined as seronegative to N protein in the blood samples collected at baseline and Day 43).
This analysis was not completed as different definitions of COVID-19 cases used during blinding, open-label and after implementation of an urgent safety measures letter led to biases that did not permit analysis of COVID-19 cases at the end of the trial.
|
|||||||||
End point type |
Secondary
|
|||||||||
End point timeframe |
Post vaccination on Day 1 up to Day 393
|
|||||||||
|
||||||||||
Notes [24] - Data were not analyzed for this endpoint. [25] - Data were not analyzed for this endpoint. |
||||||||||
No statistical analyses for this end point |
|
||||||||||||||||||||||||||||
End point title |
SARS-CoV-2 receptor binding domain (RBD) of Spike (S) Protein Antibody Levels on Days 1, 29, 43, 120 and 211 | |||||||||||||||||||||||||||
End point description |
Titers of IgG antibodies directed against the SARS-CoV-2 RBD of Spike Protein antigen were measured by ELISA and expressed as GMTs with 95% CI. Participants who have tested positive for SARS-CoV-2 via PCR or N-protein antibodies have their data included up to the point of positive test result or symptom onset. Participants who received a licensed/authorized vaccine were censored at the day after receiving the licensed/authorized vaccine.
Per Protocol Immunogenicity (PPI) Set: Included all Phase 2b participants from the Immunogenicity Subset who were seronegative at baseline, received both doses as randomized and within the specified windows, had no important protocol deviations that impacted immunogenicity outcomes, did not receive medical treatments that interfered with the proposed immunogenicity measurements and had at least 1 blood sample collected at baseline and starting at 14 days post-second vaccination available for analysis.
|
|||||||||||||||||||||||||||
End point type |
Secondary
|
|||||||||||||||||||||||||||
End point timeframe |
Days 1 (baseline), 29, 43, 120 and 211
|
|||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||
Notes [26] - Day 1 - N = 544 Day 29 - N = 536 Day 43 - N = 518 Day 120 - N = 432 Day 211 - N = 27 [27] - Day 1 - N = 525 Day 29 - N = 516 Day 43 - N = 498 Day 120 - N = 245 Day 211 - N = 7 |
||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||
End point title |
Percentage of Participants Seroconverting to SARS-CoV-2 RBD of S Protein antibodies on Days 29, 43, 120 and 211 | ||||||||||||||||||||||||
End point description |
Titers of IgG antibodies directed against the SARS-CoV-2 RBD of Spike Protein antigen were measured by ELISA. Percentage with 95% CI of participants for whom a seroconversion was observed is presented by group. In participants who tested seronegative to the N protein for SARS-CoV-2 at baseline, seroconversion was defined as a fold increase above 1 in antibody titer against SARS-CoV-2 RBD of S protein. Participants who tested positive for SARS-CoV-2 via PCR or N-protein antibodies had their data included up to the point of positive test result or symptom onset. Participants who received a licensed/authorized vaccine were censored at the day after receiving the licensed/authorized vaccine.
The analysis set used was the PPI Set.
|
||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||
End point timeframe |
Day 1 (baseline) and Days 29, 43, 120 and 211
|
||||||||||||||||||||||||
|
|||||||||||||||||||||||||
Notes [28] - Day 29 - N = 536 Day 43 - N = 518 Day 120 - N = 432 Day 211 - N = 27 [29] - Day 29 - N = 516 Day 43 - N = 498 Day 120 - N = 245 Day 211 - N = 7 |
|||||||||||||||||||||||||
No statistical analyses for this end point |
|
||||||||||||||||||||||||||||
End point title |
SARS-CoV-2 viral neutralizing antibody levels on Days 1, 29, 43, 120 and 211 | |||||||||||||||||||||||||||
End point description |
Titers of viral neutralizing antibodies were determined by an activity assay and expressed as GMTs with 95% CI. Participants who have tested positive for SARS-CoV-2 via PCR or N-protein antibodies have their data included up to the point of positive test result or symptom onset. Participants who received a licensed/authorized vaccine were censored at the day after receiving the licensed/authorized vaccine. The analysis set used was the PPI Set.
|
|||||||||||||||||||||||||||
End point type |
Secondary
|
|||||||||||||||||||||||||||
End point timeframe |
Days 1 (baseline), 29, 43, 120 and 211
|
|||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||
Notes [30] - Day 1 - N = 544 Day 29 - N = 536 Day 43 - N = 518 Day 120 - N = 432 Day 211 - N = 27 [31] - Day 1 - N = 525 Day 29 - N = 516 Day 43 - N = 498 Day 120 - N = 245 Day 211 - N = 7 |
||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||
End point title |
Percentage of Participants Seroconverting to SARS-CoV-2 Viral Neutralizing Antibodies on Days 29, 43, 120 and 211 | ||||||||||||||||||||||||
End point description |
Titers of viral neutralizing antibodies were determined by an activity assay. Percentage with 95% CI of participants for whom a seroconversion was observed is presented by group.. In participants who tested seronegative to the N protein for SARS-CoV-2 at baseline, seroconversion was defined as a fold increase above 1 in antibody titer against SARS-CoV-2 neutralizing antibody titer. Participants who have been tested positive for SARS-CoV-2 via PCR or N-protein antibodies have their data included up to the point of positive test result or symptom onset. Participants who received a licensed/authorized vaccine were censored at the day after receiving the licensed/authorized vaccine.
The analysis set used was the PPI Set.
|
||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||
End point timeframe |
Baseline and Days 29, 43, 120 and 211
|
||||||||||||||||||||||||
|
|||||||||||||||||||||||||
Notes [32] - Day 29 - N = 536 Day 43 - N = 518 Day 120 - N = 432 Day 211 - N = 27 [33] - Day 29 - N = 516 Day 43 - N = 498 Day 120 - N = 245 Day 211 - N = 7 |
|||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Adverse events information
|
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Timeframe for reporting adverse events |
Occurring on the Day of Vaccination and the following 28 Days after any dose (Days 1 to 29 and Days 29 to 57)
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Adverse event reporting additional description |
Participants who became unblinded and/or received a licensed/authorized vaccine were censored at the day after unblinding or at the day after receiving the licensed/authorized vaccine, whichever is earlier.
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Assessment type |
Systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
24.1
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Reporting groups
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Reporting group title |
Placebo
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Reporting group description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with matching placebo as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
CVnCoV 12 μg Vaccine
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Reporting group description |
Participants in the Phase 2b and Phase 3 periods were vaccinated with CVnCoV 12 μg as an intramuscular injection by needle in the deltoid area, preferably in the non-dominant arm, on Day 1 and Day 29. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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17 Feb 2021 |
The following changes were made:
• The planned extension study was removed from the protocol for this trial and was submitted as a separate protocol.
• Several COVID-19 vaccines have been authorized for emergency use since the original protocol and guidance was added on the handling of participant participation and data from participants who request to be unblinded due to being eligible to receive an authorized/licensed vaccine to prevent COVID-19.
• The secondary safety objective was reclassified as a primary objective.
• Instructions added that gene sequencing should be performed in participants with a positive RT PCR test to identify mutations in the S protein.
• Samples for CMI and genomic biomarkers could also be taken in Phase 3 and not only in the Phase 2b immunogenicity subset.
• It was clarified throughout the protocol that:
- COVID-19 is not to be reported as an AE.
- Different types of AEs, and any concomitant medication used for the treatment therefore, should only be collected during the specified reporting periods.
- Participants may receive the second dose if they develop COVID 19 between the first and second doses (after being symptom-free for 2 weeks).
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29 Mar 2021 |
The following changes were made:
• The co-primary objective (and corresponding endpoint) regarding the efficacy of CVnCoV in the prevention of moderate to severe COVID 19 was changed to a key secondary objective. Subsequently, the corresponding statistical calculations were also updated.
• Various strains have been identified since the original protocol and therefore a key secondary efficacy objective was added to demonstrate the efficacy of CVnCoV in the prevention of COVID 19 caused by the “wild type” (ie, WT/D614G lineages A.1/B.1 without VOC B.1.1.7, B.1.351, B.1.429) and “UK” (B.1.1.7) strains. An exploratory objective was added to demonstrate the efficacy on any other strains was also added.
• The number of participants with exploratory immunogenicity assessment decreased from 400 to 200. |
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25 Nov 2021 |
The following changes were made:
• To unblind all remaining blinded participants and inform them of the treatment received.
• To monitor safety of the following participants remaining in the open-label phase after unblinding:
- Participants who had received CVnCoV and received/would receive an AV through their national vaccination program.
- Participants who had received CVnCoV and continued follow-up in the trial as initially planned, without receiving an AV.
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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 |