Clinical Trial Results:
A Phase 3 Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy and Safety of BMN 111 in Children with Achondroplasia.
Summary
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EudraCT number |
2015-003836-11 |
Trial protocol |
GB ES DE |
Global end of trial date |
30 Oct 2019
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Results information
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Results version number |
v1(current) |
This version publication date |
24 Sep 2020
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First version publication date |
24 Sep 2020
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
111-301
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT03197766 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
BioMarin Pharmaceutical Inc
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Sponsor organisation address |
105 Digital Drive, Novato, United States, 94949
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Public contact |
Clinical Trials Information, BioMarin Pharmaceutical Inc., MedInfo@bmrn.com
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Scientific contact |
Clinical Trials Information, BioMarin Pharmaceutical Inc., MedInfo@bmrn.com
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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-002033-PIP01-16 | ||
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 |
21 Apr 2020
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
30 Oct 2019
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Global end of trial reached? |
Yes
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Global end of trial date |
30 Oct 2019
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
Evaluate change from baseline in annualized growth velocity at 52 weeks in subjects treated with BMN 111 compared with control subjects in the placebo group
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Protection of trial subjects |
This clinical study was designed, conducted, recorded, and reported in compliance with the principles of Good Clinical Practice (GCP) guidelines. These guidelines are stated in U.S. federal regulations as well as “Guidance for Good Clinical Practice,” International Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
12 Dec 2016
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
Yes
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Australia: 22
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Country: Number of subjects enrolled |
Japan: 7
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Country: Number of subjects enrolled |
Turkey: 3
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Country: Number of subjects enrolled |
United States: 53
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Country: Number of subjects enrolled |
Spain: 13
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Country: Number of subjects enrolled |
United Kingdom: 13
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Country: Number of subjects enrolled |
Germany: 10
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Worldwide total number of subjects |
121
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EEA total number of subjects |
36
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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) |
96
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Adolescents (12-17 years) |
25
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Adults (18-64 years) |
0
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From 65 to 84 years |
0
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85 years and over |
0
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Recruitment
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Recruitment details |
Study was conducted at 24 study centers in 7 countries. | ||||||||||||||||||
Pre-assignment
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Screening details |
A total of 121 subjects were enrolled into the study; 61 subjects were randomized to receive placebo and 60 subjects to receive vosoritide. | ||||||||||||||||||
Period 1
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Period 1 title |
Overall trial (overall period)
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Is this the baseline period? |
Yes | ||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | ||||||||||||||||||
Roles blinded |
Subject, Investigator, Monitor, Data analyst | ||||||||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Placebo | ||||||||||||||||||
Arm description |
Subjects received a placebo single daily subcutaneous injection for 52 weeks | ||||||||||||||||||
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 |
Solution for injection
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Routes of administration |
Subcutaneous use
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Dosage and administration details |
Subjects received a placebo single daily subcutaneous injection for 52 weeks
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Arm title
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Vosoritide 15 μg/kg | ||||||||||||||||||
Arm description |
Subjects received a 15 μg/kg vosoritide single daily subcutaneous injection for 52 weeks | ||||||||||||||||||
Arm type |
Active comparator | ||||||||||||||||||
Investigational medicinal product name |
Vosoritide
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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 |
Subcutaneous use
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Dosage and administration details |
Subjects received a 15 μg/kg vosoritide single daily subcutaneous injection for 52 weeks
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Baseline characteristics reporting groups
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Reporting group title |
Placebo
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Reporting group description |
Subjects received a placebo single daily subcutaneous injection for 52 weeks | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Vosoritide 15 μg/kg
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Reporting group description |
Subjects received a 15 μg/kg vosoritide single daily subcutaneous injection for 52 weeks | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Placebo
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Reporting group description |
Subjects received a placebo single daily subcutaneous injection for 52 weeks | ||
Reporting group title |
Vosoritide 15 μg/kg
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Reporting group description |
Subjects received a 15 μg/kg vosoritide single daily subcutaneous injection for 52 weeks |
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End point title |
Change from baseline of annualized growth velocity (AGV) | ||||||||||||||||||
End point description |
Annualized growth velocity (AGV) = Standing Height at Date 2 - Standing Height at Date 1/Interval Lenght (Days) x 365.25
The Full Analysis Set (FAS) was defined according to the intention to treat and included all randomized consented subjects. The FAS use to present the baseline characteristics and efficacy data by randomized treatment group.
Two subjects in the vosoritide group discontinued from the study before Week 52. The values for these 2 subjects were imputed for this analysis. The type I error was controlled using hierarchical testing.
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End point type |
Primary
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End point timeframe |
At Baseline and Week 52
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Statistical analysis title |
Annualized Growth Velocity - Placebo Vs Vosoritide | ||||||||||||||||||
Comparison groups |
Placebo v Vosoritide 15 μg/kg
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Number of subjects included in analysis |
121
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||||||||
P-value |
< 0.0001 | ||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||
Confidence interval |
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End point title |
Change from baseline of height Z-score | ||||||||||||||||||
End point description |
Standing Height converted to an age-and sex-appropriate standard deviation score (SDS), also referred to as a Z-score, by comparison with reference data available for average stature children from the Centers for Disease Control and Prevention(CDC).
Full Analysis Set(FAS) population
Two subjects in the vosoritide group discontinued from the study before Week 52. The values for these 2 subjects were imputed for this analysis. The type I error was controlled using hierarchical testing.
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End point type |
Secondary
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End point timeframe |
At Baseline and Week 52
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Statistical analysis title |
Height Z-Score - Placebo Vs Vosoritide | ||||||||||||||||||
Comparison groups |
Placebo v Vosoritide 15 μg/kg
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Number of subjects included in analysis |
121
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||||||||
P-value |
< 0.0001 | ||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||
Confidence interval |
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End point title |
Change from baseline of upper to lower body segment ratio | ||||||||||||||||||
End point description |
Full Analysis Set (FAS) population.
Two subjects in the vosoritide group discontinued from the study before Week 52. The values for these 2 subjects were imputed for this analysis. The type I error was controlled using hierarchical testing.
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End point type |
Secondary
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End point timeframe |
At Baseline and Week 52
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Statistical analysis title |
Upper to Lower Body Ratio - Placebo Vs Vosoritide | ||||||||||||||||||
Comparison groups |
Placebo v Vosoritide 15 μg/kg
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Number of subjects included in analysis |
121
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||||||||
P-value |
= 0.506 | ||||||||||||||||||
Method |
ANCOVA | ||||||||||||||||||
Confidence interval |
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End point title |
Time taken to reach peak concentration (Tmax) of vosoritide at week 52 [1] | ||||||||
End point description |
Pharmacokinetics (PK) Parameter Time taken to reach Peak Concentration (Tmax)
At week 52: number of PK parameters used in the calculation of the statistics = 56
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End point type |
Secondary
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End point timeframe |
At week 52.
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Notes [1] - 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: Results summarised using descriptive statistics only |
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No statistical analyses for this end point |
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End point title |
Maximum plasma concentration (Cmax) of vosoritide at week 52 [2] | ||||||||
End point description |
Pharmacokinetics (PK) Parameter Maximum Plasma Concentration (Cmax).
At week 52: number of PK parameters used in the calculation of the statistics = 56
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End point type |
Secondary
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End point timeframe |
At Week 52.
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Notes [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: Results summarised using descriptive statistics only |
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No statistical analyses for this end point |
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End point title |
Area under the concentration-time curve from time zero to time of last measurable concentration (AUC0-t) of vosoritide at week 52 [3] | ||||||||
End point description |
Pharmacokinetics (PK) Parameter Area under the concentration-time curve from time zero to time of last measurable concentration (AUC0-t).
At week 52: number of PK parameters used in the calculation of the statistics = 56
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End point type |
Secondary
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End point timeframe |
At week 52.
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Notes [3] - 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: Results summarised using descriptive statistics only |
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No statistical analyses for this end point |
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End point title |
Area under the concentration-time curve from time zero to infinity (AUC0-∞) of vosoritide at week 52 [4] | ||||||||
End point description |
Pharmacokinetics (PK) Parameter Area Under the Concentration-time Curve From Time 0 to Infinity
(AUC0-∞).
At week 52: number of PK parameters used in the calculation of the statistics = 48
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End point type |
Secondary
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End point timeframe |
At week 52.
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Notes [4] - 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: Results summarised using descriptive statistics only |
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No statistical analyses for this end point |
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End point title |
Apparent clearance (CL/F) of vosoritide at week 52 [5] | ||||||||
End point description |
Pharmacokinetics(PK) Parameter Apparent Clearance (CL/F)
At week 52: number of PK parameters used in the calculation of the statistics = 48
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End point type |
Secondary
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End point timeframe |
At week 52.
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Notes [5] - 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: Results summarised using descriptive statistics only |
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No statistical analyses for this end point |
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End point title |
Apparent volume of distribution (Vz/F) of vosoritide at week 52 [6] | ||||||||
End point description |
Pharmacokinetics (PK) Parameter Apparent Volume of Distribution (Vz/F)
At week 52: number of PK parameters used in the calculation of the statistics = 48
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End point type |
Secondary
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End point timeframe |
At week 52.
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Notes [6] - 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: Results summarised using descriptive statistics only |
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No statistical analyses for this end point |
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End point title |
Plasma half life (t1/2) of vosoritide at week 52 [7] | ||||||||
End point description |
Pharmacokinetics (PK) Parameter Plasma Half Life (t1/2).
At week 52: number of PK parameters used in the calculation of the statistics = 48
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End point type |
Secondary
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End point timeframe |
At week 52.
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Notes [7] - 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: Results summarised using descriptive statistics only |
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No statistical analyses for this end point |
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End point title |
Number of subjects with treatment emergent adverse events (TEAEs) | ||||||||||||||||||||||||
End point description |
A treatment-emergent Adverse Events (TEAE) is any Adverse Events that newly appeared, increased in
frequency or worsened in severity following initiation of study drug administration.
Safety Population are those all subjects in the FAS who received at least one dose of double-blind
vosoritide or placebo in this study. Safety Population used to present the safety summaries by actual
treatment received.
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End point type |
Secondary
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End point timeframe |
Up to Week 56
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No statistical analyses for this end point |
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Adverse events information
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Timeframe for reporting adverse events |
Up to Week 56
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Assessment type |
Systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
22.0
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Reporting groups
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Reporting group title |
Placebo
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Vosoritide 15 μg/kg
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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? Yes | |||
Date |
Amendment |
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28 Nov 2016 |
Use of Birth Control During and After Study Participation |
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27 Apr 2017 |
- Upper limit of age range increased from less than 15 years old to less than 18 years old.
- Stratification /randomization to be conducted by Tanner stage rather than by age group.
- Criterion for removing subjects from treatment or assessment, “Subject has reached near adult height in the judgment of the investigator” revised to be more specific.
- ISR photo language has been revised.
- Inclusion criterion #1, regarding informed consent, revised to state the subjects who reach age of 18 years while study is ongoing are asked to provide their own written consent.
- Inclusion criteria #4 revised to elaborate on requirements for entering Study 111-301 from 111-901.
- New section, Procedures due to Achondroplasia added.
- Pregnancy Testing, language added stating that start date of menses is captured.
- New section, Events of Special Interest, added.
- Statistical Methods and Determination of Sample Size, has been substantially revised.
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05 Jan 2018 |
- Evaluation of change from baseline in bone metabolism biomarkers moved from exploratory to secondary objectives.
- Exclusion criterion #6 revised to include evidence of decreased growth velocity (AGV < 1.5 cm/year) as assessed over a period of at least 6 months.
- Exclusion criterion #15 revised to state that subjects with previous bone-related surgery may enroll if surgery occurred at least 6 months prior to screening, rather than 12 months, excluding tooth extraction.
- Salivary cortisol, serum prolactin, FSH/LH, and cognitive assessment with the CBCL added as safety assessments.
- Use of Birth Control During and After Study Participation, progestogen-only hormonal contraception removed.
- DXA scans to no longer include tibia scans.
- Hip Clinical Assessment, requirement to be completed by a physician, i.e., the investigator or sub-investigator changed to assessment by an appropriately qualified health care professional. |
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01 Feb 2019 |
- The following exploratory objectives moved to secondary:
a. Change from baseline in body proportion ratios of the extremities.
b. Effect of vosoritide on bone morphology/quality by X-ray and DXA.
c. Changes in HRQoL and functional independence.
- Contraception in inclusion criteria and birth control during and after the study updated.
- Duration of subject participation updated to account for 4-week safety follow-up after Week 52.
- Primary and secondary efficacy variables separated so that new secondary variables are incorporated.
- Replaced “18 years of age” with “age of majority”.
- Inserted “In Japan, subject enrollment was staggered initially, with a minimum of a 2-week window between the first 4 subjects enrolled”. |
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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 |