Clinical Trial Results:
Efficacy and safety of the SQ tree SLIT-tablet in subjects with moderate to severe allergic rhinitis and/or conjunctivitis induced by pollen from the birch group
Summary
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EudraCT number |
2015-004821-15 |
Trial protocol |
DK SE CZ FI DE PL FR |
Global end of trial date |
20 Jun 2017
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Results information
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Results version number |
v2(current) |
This version publication date |
31 Oct 2019
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First version publication date |
05 Jan 2018
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Other versions |
v1 |
Version creation reason |
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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 |
TT-04
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
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WHO universal trial number (UTN) |
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Sponsors
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Sponsor organisation name |
ALK- Abello A/S
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Sponsor organisation address |
Bøge alle 1, Hørsholm, Denmark, 2970
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Public contact |
Global pharmacovigilance & clinical development, ALK Abello A/S, +45 45747576, clinicaltrials@alk.net
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Scientific contact |
Global pharmacovigilance & clinical development, ALK Abello A/S, +45 45747576, clinicaltrials@alk.net
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
Yes
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EMA paediatric investigation plan number(s) |
EMEA-001879-PIP01-15 | ||
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 |
01 Sep 2017
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
20 Jun 2017
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Global end of trial reached? |
Yes
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Global end of trial date |
20 Jun 2017
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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 |
The primary objective is to demonstrate superiority of the SQ tree SLIT-tablet given once daily compared to placebo in the treatment of allergic rhinoconjunctivitis induced by birch pollen.
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Protection of trial subjects |
Safety surveillance
Access to rescue medication
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
15 Apr 2016
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
No
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Poland: 232
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Country: Number of subjects enrolled |
Sweden: 35
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Country: Number of subjects enrolled |
Czech Republic: 71
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Country: Number of subjects enrolled |
Denmark: 24
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Country: Number of subjects enrolled |
Finland: 24
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Country: Number of subjects enrolled |
France: 14
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Country: Number of subjects enrolled |
Germany: 198
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Country: Number of subjects enrolled |
Russian Federation: 36
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Worldwide total number of subjects |
634
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EEA total number of subjects |
598
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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) |
60
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Adults (18-64 years) |
571
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From 65 to 84 years |
3
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85 years and over |
0
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Recruitment
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Recruitment details |
Subjects were recruited from 57 trial sites in EU (Sweden, Finland, Denmark, Poland, Germany, the Czech Republic, France) and Russia First subject first visit: 15 april 2016 Last subject last visit: 20 June 2017 | ||||||||||||||||||||||||||||||
Pre-assignment
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Screening details |
Main selection criteria: - Adults and adolescents (12-65 years) - History of moderate to severe allergic rhinitis and or conjunctivitis caused by pollen from the birch homologous group - Positive SPT and IgE against betula verrucosa | ||||||||||||||||||||||||||||||
Period 1
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Period 1 title |
treatment period (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, Monitor, Data analyst, Carer, Assessor | ||||||||||||||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Placebo | ||||||||||||||||||||||||||||||
Arm description |
- | ||||||||||||||||||||||||||||||
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 |
Sublingual tablet
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Routes of administration |
Sublingual use
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Dosage and administration details |
Subjects were instructed to take 1 tablet every day in the morning
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Arm title
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SQ tree SLIT-tablet | ||||||||||||||||||||||||||||||
Arm description |
- | ||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||
Investigational medicinal product name |
SQ tree SLIT-tablet 12 DU
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Sublingual tablet
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Routes of administration |
Sublingual use
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Dosage and administration details |
Subjects were instructed to take 1 tablet every day in the morning
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Baseline characteristics reporting groups
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Reporting group title |
Placebo
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
SQ tree SLIT-tablet
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||
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Subject analysis sets
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Subject analysis set title |
Full analysis set
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Subject analysis set type |
Full analysis | ||||||||||||||||||||||||||||||||||||||||||||
Subject analysis set description |
Full analysis set, defined as all randomised subjects
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End points reporting groups
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Reporting group title |
Placebo
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Reporting group description |
- | ||
Reporting group title |
SQ tree SLIT-tablet
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Reporting group description |
- | ||
Subject analysis set title |
Full analysis set
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Full analysis set, defined as all randomised subjects
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End point title |
Average TCS in the birch pollen season (BPS) | ||||||||||||
End point description |
The primary endpoint of the trial was the average daily allergic rhinoconjunctivitis total combined score (TCS) during the BPS. The TCS is the sum of the rhinoconjunctivitis symptom score (DSS) and mediction score (DMS).
For the DSS a total of 6 rhinoconjunctivitis symptoms (runny nose, blocked nose, sneezing, itchy nose, gritty/red/itchy eyes and watery eyes) were measured on a scale from no symptoms (0) to severe symptoms (3) (range 0-12)
For the DMS subjects recorded the use of open label rhinitis and conjunctivitis medication as needed for treatment of their rhinitis and/or conjunctivitis symptoms not controlled by the IMP.
- Desloradine tablets: score per tablet 6, max daily score 6 (1 tablet)
- Olopatadine eye drops: score per dose 1.5 per eye, max daily score 6 (4 doses)
- Momethasone nasa spray; score per dose 2, maximum daily score 8 (4 doses)
Range 0-20
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End point type |
Primary
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End point timeframe |
During the birch pollen season
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Statistical analysis title |
Analysis of average TCS in the BPS | ||||||||||||
Statistical analysis description |
The response variable in the analysis is: the square root of the average TCS (results were back-transformed to original scale). The analysis is based on a linear mixed effect (lme) model with treatment as fixed class effect and pollen region as a random class variable.
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Comparison groups |
Placebo v SQ tree SLIT-tablet
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Number of subjects included in analysis |
575
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Mixed models analysis | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
3.02
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
1.99 | ||||||||||||
upper limit |
4.05 |
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End point title |
Average TCS in the tree pollen season (TPS) | ||||||||||||
End point description |
Average TCS measured in the alder, hazel and birch pollen seasons combined (days in-between seasons excluded)
TCS is a combination of the DSS and DMS (range 0-32)
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End point type |
Secondary
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End point timeframe |
Tree pollen season (TPS)
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Statistical analysis title |
Analysis of average TCS in the TPS | ||||||||||||
Statistical analysis description |
The response variable in the analysis is: the square root of the average TCS (results were back-transformed to original scale). The analysis is based on a linear mixed effect (lme) model with treatment as fixed class effect and pollen region as a random class variable.
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Comparison groups |
SQ tree SLIT-tablet v Placebo
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Number of subjects included in analysis |
575
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Mixed models analysis | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
2.27
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
1.44 | ||||||||||||
upper limit |
3.11 |
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End point title |
Average DSS in the BPS | ||||||||||||
End point description |
The rhiniconjunctivitis daily symptom score (DSS) consisted of 6 symptoms (rynny nose, blocked nose, sneezing, itchy nose, gritty/red/itchy eyes, and watery eyes) scored from no symptoms (0) to severe symptoms (3)
Range 0-12
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End point type |
Secondary
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End point timeframe |
Birch pollen season
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Statistical analysis title |
Analysis of DSS in the BPS | ||||||||||||
Statistical analysis description |
The response variable in the analysis is: the square root of the average DSS (results were back-transformed to original scale). The analysis is based on a linear mixed effect (lme) model with treatment as fixed class effect and pollen region as a random class variable
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Comparison groups |
Placebo v SQ tree SLIT-tablet
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Number of subjects included in analysis |
575
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Analysis specification |
Pre-specified
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Analysis type |
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P-value |
< 0.0001 | ||||||||||||
Method |
Mixed models analysis | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
1.32
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
0.84 | ||||||||||||
upper limit |
1.81 |
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End point title |
Average DSS in the TPS | ||||||||||||
End point description |
The rhinoconjunctivitis daily symptom score (DSS) consists of 6 symptoms (runny nose, blocked nose, sneezing, itchy nose, gritty/red/itchy eyes and watery eyes) scored from no symptoms (0) to severe symptoms (3). Range 0-12
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End point type |
Secondary
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End point timeframe |
Tree pollen season defined as the alder, hazel and birch pollen seasons combined (days in-between seasons excluded)
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Statistical analysis title |
Analysis of DSS in the TPS | ||||||||||||
Statistical analysis description |
The response variable in the analysis is: the square root of the average DSS (results were back-transformed to original scale). The analysis is based on a linear mixed effect (lme) model with treatment as fixed class effect and pollen region as a random class variable
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Comparison groups |
Placebo v SQ tree SLIT-tablet
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Number of subjects included in analysis |
575
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
< 0.0001 | ||||||||||||
Method |
Mixed models analysis | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
0.99
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
0.6 | ||||||||||||
upper limit |
1.38 |
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Adverse events information
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Timeframe for reporting adverse events |
AEs were collected from consent to 7 days after end-of-trial or discontinuation.
Only treatment-emergent AEs are presented (from first IMP intake to 7 days 7 days after end-of-trial or discontinuation)
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Assessment type |
Non-systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
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Reporting groups
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Reporting group title |
Placebo
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Reporting group description |
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Reporting group title |
SQ tree SLIT-tablet 12 DU
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Reporting group description |
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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? No | |||
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 |