Clinical Trial Results:
Efficacy and safety of twice-daily application of delgocitinib cream 20 mg/g for 6 weeks in subjects with active discoid lupus erythematosus.
A phase 2a exploratory, randomised, double-blind, vehicle-controlled, within-subject, multi-centre trial.
Summary
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EudraCT number |
2018-003615-22 |
Trial protocol |
DE DK FR |
Global end of trial date |
30 Apr 2020
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Results information
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Results version number |
v1(current) |
This version publication date |
30 Apr 2021
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First version publication date |
30 Apr 2021
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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 |
EXP-1373
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT03958955 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
LEO Pharma A/S
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Sponsor organisation address |
Industriparken 55, Ballerup, Denmark, 2750
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Public contact |
Clinical Disclosure Specialist, LEO Pharma A/S, +45 4494 5888, disclosure@leo-pharma.com
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Scientific contact |
Clinical Disclosure Specialist, LEO Pharma A/S, +45 4494 5888, disclosure@leo-pharma.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 |
06 Jul 2020
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
15 Apr 2020
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Global end of trial reached? |
Yes
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Global end of trial date |
30 Apr 2020
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Was the trial ended prematurely? |
Yes
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General information about the trial
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Main objective of the trial |
To investigate the efficacy of delgocitinib cream 20 mg/g twice daily on active discoid lupus erythematosus (DLE) target lesions.
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Protection of trial subjects |
This clinical trial was conducted in accordance with the revision, current at the start of the trial, of the World Medical Association’s Declaration of Helsinki – Ethical Principles for Medical Research Involving Human Subjects. All subjects received written and verbal information concerning the clinical trial. This information emphasised that participation in the clinical trial was voluntary and that the subject could withdraw from the clinical trial at any time and for any reason. All subjects were given an opportunity to ask questions and were given sufficient time to consider before consenting. Subjects' signed and dated informed consent to participate in the clinical trial were obtained prior to any trial related activities being carried out in accordance with ICH Good Clinical Practice (GCP) Section 4.8 and all applicable laws and regulations.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
09 Jul 2019
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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 |
Denmark: 1
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Country: Number of subjects enrolled |
France: 5
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Country: Number of subjects enrolled |
Germany: 17
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Country: Number of subjects enrolled |
United States: 4
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Worldwide total number of subjects |
27
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EEA total number of subjects |
23
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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) |
25
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From 65 to 84 years |
2
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85 years and over |
0
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Recruitment
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Recruitment details |
37 subjects screened. 27 subjects randomised. 26 subjects completed. | |||||||||||||||
Pre-assignment
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Screening details |
A screening visit took place 7 to 28 days before the first application of investigational medicinal product (IMP). To be eligible for participation in the trial each subject had to have at least 2 discoid lupus erythematosus (DLE) target lesions with active disease (referred to as lesions 1 and 2) fulfilling the inclusion criteria. | |||||||||||||||
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 | |||||||||||||||
Blinding implementation details |
The packaging and labelling of the IMPs were indistinguishable with no evidence of their identity. There was a slight difference in colour between the 2 IMPs, which was only discernible on close inspection with both IMPs compared side by side. To avoid accidental investigator unblinding, the first application of IMPs and instructions to the subjects was only done by designated trial site staff who were not involved in clinical evaluations.
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Arms
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Are arms mutually exclusive |
No
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Arm title
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Delgocitinib cream 20 mg/g | |||||||||||||||
Arm description |
This arm represents the DLE lesion that was treated with active IMP - delgocitinib cream 20 mg/g. All 27 subjects received delgocitinib cream 20 mg/g on one DLE target lesion and delgocitinib cream vehicle on another DLE target lesion twice daily for 6 weeks. | |||||||||||||||
Arm type |
Experimental | |||||||||||||||
Investigational medicinal product name |
Delgocitinib cream 20 mg/g
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Cream
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Routes of administration |
Topical use
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Dosage and administration details |
The IMPs (delgocitinib cream and vehicle) were administered as topical applications twice daily, approximately 12 hours apart in the morning and in the evening, in an even layer to cover the entire treatment area, for 6 weeks. The treatment area of each of the 2 target lesions (lesions 1 and 2) of a subject was defined as the lesion area at baseline plus a margin of approximately 1 cm. The amount of IMP to be applied to each treatment area was dependent on the size of the target lesions. If a target lesion was:
• Unchanged or decreased in size, the treatment area was kept constant during the treatment period, even if the symptoms improved.
• Increased in size, the treatment area was increased correspondingly.
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Arm title
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Delgocitinib cream vehicle | |||||||||||||||
Arm description |
This arm represents the DLE lesion that was treated with vehicle - delgocitinib cream vehicle. All 27 subjects received delgocitinib cream 20 mg/g on one DLE target lesion and delgocitinib cream vehicle on another DLE target lesion twice daily for 6 weeks. | |||||||||||||||
Arm type |
Placebo | |||||||||||||||
Investigational medicinal product name |
Delgocitinib vehicle
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Cream
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Routes of administration |
Topical use
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Dosage and administration details |
The IMPs (delgocitinib cream and vehicle) were administered as topical applications twice daily, approximately 12 hours apart in the morning and in the evening, in an even layer to cover the entire treatment area, for 6 weeks. The treatment area of each of the 2 target lesions (lesions 1 and 2) of a subject was defined as the lesion area at baseline plus a margin of approximately 1 cm. The amount of IMP to be applied to each treatment area was dependent on the size of the target lesions. If a target lesion was:
• Unchanged or decreased in size, the treatment area was kept constant during the treatment period, even if the symptoms improved.
• Increased in size, the treatment area was increased correspondingly.
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Baseline characteristics reporting groups
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Reporting group title |
Overall trial
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Reporting group description |
Baseline | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Subject analysis sets
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Subject analysis set title |
Randomised subjects
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Subject analysis set type |
Full analysis | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Subject analysis set description |
All 27 randomised subjects were included in the full analysis set (FAS).
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Subject analysis set title |
Exposed subjects
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Subject analysis set type |
Safety analysis | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Subject analysis set description |
27 subjects received at least 1 dose of IMP.
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Subject analysis set title |
Primary analysis set
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Subject analysis set type |
Per protocol | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Subject analysis set description |
5 subjects were excluded from the per protocol (PP) analysis set as the primary endpoint data were compromised. The PP analysis set hence comprised 22 (81.5%) subjects. Data at Week 8 was excluded from the PP analysis set for 2 subjects, as they used prohibited concomitant medication in the safety follow-up period.
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End points reporting groups
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Reporting group title |
Delgocitinib cream 20 mg/g
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Reporting group description |
This arm represents the DLE lesion that was treated with active IMP - delgocitinib cream 20 mg/g. All 27 subjects received delgocitinib cream 20 mg/g on one DLE target lesion and delgocitinib cream vehicle on another DLE target lesion twice daily for 6 weeks. | ||
Reporting group title |
Delgocitinib cream vehicle
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Reporting group description |
This arm represents the DLE lesion that was treated with vehicle - delgocitinib cream vehicle. All 27 subjects received delgocitinib cream 20 mg/g on one DLE target lesion and delgocitinib cream vehicle on another DLE target lesion twice daily for 6 weeks. | ||
Subject analysis set title |
Randomised subjects
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
All 27 randomised subjects were included in the full analysis set (FAS).
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Subject analysis set title |
Exposed subjects
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Subject analysis set type |
Safety analysis | ||
Subject analysis set description |
27 subjects received at least 1 dose of IMP.
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Subject analysis set title |
Primary analysis set
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Subject analysis set type |
Per protocol | ||
Subject analysis set description |
5 subjects were excluded from the per protocol (PP) analysis set as the primary endpoint data were compromised. The PP analysis set hence comprised 22 (81.5%) subjects. Data at Week 8 was excluded from the PP analysis set for 2 subjects, as they used prohibited concomitant medication in the safety follow-up period.
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End point title |
Target lesions with Investigator’s Global Assessment (IGA)a score of 0 or 1 at Week 6. | |||||||||
End point description |
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End point type |
Primary
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End point timeframe |
At week 6
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Statistical analysis title |
Primary endpoint: IGA score of 0 or 1 | |||||||||
Statistical analysis description |
22 subjects with 2 DLE lesions each (44 DLE lesions in total). Each subject had one DLE lesion treated with delgocitinib cream 20 mg/g and another DLE lesion treated with delgocitinib cream vehicle.
Attributable risk is defined as the difference in estimated probability of treatment success
of delgocitinib compared to vehicle. Success is defined as having an IGA score of 0 (clear) or 1 (almost clear) at Week 6.
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Comparison groups |
Delgocitinib cream 20 mg/g v Delgocitinib cream vehicle
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Number of subjects included in analysis |
44
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Analysis specification |
Pre-specified
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Analysis type |
superiority | |||||||||
P-value |
= 0.4531 [1] | |||||||||
Method |
Mcnemar | |||||||||
Parameter type |
Attributable risk | |||||||||
Point estimate |
-0.14
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Confidence interval |
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level |
95% | |||||||||
sides |
2-sided
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lower limit |
-0.37 | |||||||||
upper limit |
0.09 | |||||||||
Notes [1] - Exact p-value of McNemar's test |
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End point title |
Number of Adverse Events (AEs) up to Week 6 | ||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Week 0 to week 6
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Notes [2] - Safety analysis set |
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No statistical analyses for this end point |
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End point title |
Number of Subjects With AEs up to Week 6 | ||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Week 0 to week 6
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Notes [3] - Safety analysis set |
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No statistical analyses for this end point |
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End point title |
Number of Lesion-specific, Treatment-related AEs up to Week 6. | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Week 0 to week 6
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Notes [4] - Per protocol (PP) analysis set |
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Statistical analysis title |
Lesions with IMP related lesion-specific AEs | ||||||||||||
Statistical analysis description |
27 subjects with 2 DLE lesions each (54 DLE lesions in total). Each subject had one DLE lesion treated with delgocitinib cream 20 mg/g and another DLE lesion treated with delgocitinib cream vehicle.
Attributable risk is defined as the difference in estimated probability of treatment success
of delgocitinib compared to vehicle.
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Comparison groups |
Delgocitinib cream 20 mg/g v Delgocitinib cream vehicle
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Number of subjects included in analysis |
54
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 0.5 [5] | ||||||||||||
Method |
Mcnemar | ||||||||||||
Parameter type |
Attributable risk | ||||||||||||
Point estimate |
0.07
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-0.02 | ||||||||||||
upper limit |
0.17 | ||||||||||||
Notes [5] - Exact p-value of McNemar's test. |
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End point title |
A ≥2-point Reduction in IGA Score at Week 6 Compared to Baseline. | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
baseline to Week 6
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Statistical analysis title |
At least 2-point reduction in IGA score at Week 6 | ||||||||||||
Statistical analysis description |
22 subjects with 2 DLE lesions each (44 DLE lesions in total). Each subject had one DLE lesion treated with delgocitinib cream 20 mg/g and another DLE lesion treated with delgocitinib cream vehicle.
Attributable risk is defined as the difference in estimated probability of treatment success
of delgocitinib compared to vehicle.
Success is defined as having at least a 2-point reduction in IGA score from baseline to Week
6.
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Comparison groups |
Delgocitinib cream 20 mg/g v Delgocitinib cream vehicle
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Number of subjects included in analysis |
44
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 0.4531 [6] | ||||||||||||
Method |
Mcnemar | ||||||||||||
Parameter type |
Attributable risk | ||||||||||||
Point estimate |
-0.14
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-0.37 | ||||||||||||
upper limit |
0.09 | ||||||||||||
Notes [6] - Exact p-value of McNemar's test. |
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End point title |
A ≥2-point Reduction in Erythema Score at Week 6 Compared to Baseline. | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
baseline to Week 6
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Statistical analysis title |
At least 2-point reduction in erythema score at W6 | ||||||||||||
Statistical analysis description |
22 subjects with 2 DLE lesions each (44 DLE lesions in total). Each subject had one DLE lesion treated with delgocitinib cream 20 mg/g and another DLE lesion treated with delgocitinib cream vehicle.
Attributable risk is defined as the difference in estimated probability of treatment success
of delgocitinib compared to vehicle.
Success is defined as having at least a 2-point reduction in IGA score from baseline to Week
6.
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Comparison groups |
Delgocitinib cream 20 mg/g v Delgocitinib cream vehicle
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Number of subjects included in analysis |
44
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 1 [7] | ||||||||||||
Method |
McNemar's test | ||||||||||||
Parameter type |
Attributable risk | ||||||||||||
Point estimate |
0
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-0.22 | ||||||||||||
upper limit |
0.22 | ||||||||||||
Notes [7] - Exact p-value of McNemar's test. |
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End point title |
Erythema Score at Week 6 | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Week 6
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Notes [8] - Per protocol (PP) analysis set [9] - Per protocol (PP) analysis set |
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Statistical analysis title |
Erythema score at Week 6 | ||||||||||||
Statistical analysis description |
22 subjects with 2 DLE lesions each (44 DLE lesions in total). Each subject had one DLE lesion treated with delgocitinib cream 20 mg/g and another DLE lesion treated with delgocitinib cream vehicle.
Erythema is scored as 0=absent, 1=pink, faint, 2=red, 3=dark red, purple/violaceous/crusted/haemorrhagic.
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Comparison groups |
Delgocitinib cream 20 mg/g v Delgocitinib cream vehicle
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Number of subjects included in analysis |
44
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 0.5797 [10] | ||||||||||||
Method |
Wilcoxon signed rank test | ||||||||||||
Confidence interval |
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Notes [10] - p-value of the Wilcoxon signed rank test. |
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End point title |
Total Skin Disease Activity Score (Sum of Scores for Erythema, Scaling/Hyperkeratosis, and Oedema/Infiltration) at Week 6. | ||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
Week 6
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Notes [11] - Per protocol (PP) analysis set [12] - Per protocol (PP) analysis set |
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Statistical analysis title |
Total skin disease activity score at Week 6 | ||||||||||||
Statistical analysis description |
22 subjects with 2 DLE lesions each (44 DLE lesions in total). Each subject had one DLE lesion treated with delgocitinib cream 20 mg/g and another DLE lesion treated with delgocitinib cream vehicle.
Total skin disease activity score is the sum of the scores for erythema, scaling/hyperkeratosis, and oedema/infiltration.
Total skin disease activity score ranges from 0 to 7 with lower score indicating better state.
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Comparison groups |
Delgocitinib cream 20 mg/g v Delgocitinib cream vehicle
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Number of subjects included in analysis |
44
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 0.7862 [13] | ||||||||||||
Method |
Wilcoxon signed rank test | ||||||||||||
Confidence interval |
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Notes [13] - p-value of the Wilcoxon signed rank test. |
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Adverse events information
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Timeframe for reporting adverse events |
Baseline to Week 8
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Assessment type |
Non-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 |
Randomised subjects
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Reporting group description |
All subjects received delgocitinib cream 20 mg/g on one DLE target lesion and delgocitinib cream vehicle on another DLE target lesion twice daily for 6 weeks. Delgocitinib cream 20 mg/g: Cream for topical application. Delgocitinib cream vehicle: The cream vehicle is similar to the delgocitinib cream except that it does not contain any active ingredient. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 0% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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15 May 2019 |
Amendment 1 (substantial, global, 15-May-2019):
The protocol was amended to address comments mainly from the German authorities and ethics committee, who requested further specification of details about e.g. lab procedures, re-assessment of eligibility, and discontinuation of IMP, as well as correction of inconsistencies regarding wording of the primary endpoint and exclusion criteria.
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22 Oct 2019 |
Amendment 2 (substantial, global, 22-Oct-2019):
The protocol was amended to address recruitment issues. DLE is a rare disease, and the number of patients eligible for this trial was limited. The exclusion criteria concerning tobacco use and hepatitis B serology (exclusion criteria 17 and 26) were therefore modified to ease recruitment without compromising the safety of the subjects and the evaluation of trial results.
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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. | |||
The trial was terminated prematurely due to slow recruitment, and due to an anticipation that recruitment would become further delayed due to the COVID-19 pandemic affecting recruitment activities. |