Clinical Trial Results:
Single-Arm Study to Assess the Efficacy of UVADEX® (Methoxsalen) Sterile Solution in Conjunction With the THERAKOS® CELLEX® Photopheresis System in Pediatric Patients With Steroid-Refractory Acute Graft Versus Host Disease (aGvHD)
Summary
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EudraCT number |
2014-004806-14 |
Trial protocol |
DE HU GB IT ES AT |
Global end of trial date |
16 Jul 2019
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Results information
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Results version number |
v2(current) |
This version publication date |
09 Sep 2020
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First version publication date |
07 Aug 2020
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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 |
TKS-2014-001
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT02524847 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
Therakos, Inc., a Mallinckrodt Company
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Sponsor organisation address |
1425 U.S. Route 206, Bedminster, NJ, United States, 07921
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Public contact |
Medical Information Call Center, Therakos, Inc., a Mallinckrodt Company, 1 800-844-2830 Ext 5, ClinicalTrials@mnk.com
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Scientific contact |
Medical Information Call Center, Therakos, Inc., a Mallinckrodt Company, 1 800-844-2830 Ext 5, ClinicalTrials@mnk.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 |
23 Aug 2019
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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 |
16 Jul 2019
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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 evaluate the efficacy of extracorporeal photopheresis (ECP) in pediatric participants with steroid-refractory aGvHD.
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Protection of trial subjects |
This trial was conducted in accordance with the ethical principles of Good Clinical Practice, according to the ICH Harmonized Tripartite Guideline, which has its foundation in the Declaration of Helsinki.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
20 Jan 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 |
United States: 10
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Country: Number of subjects enrolled |
Spain: 3
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Country: Number of subjects enrolled |
United Kingdom: 1
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Country: Number of subjects enrolled |
Austria: 2
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Country: Number of subjects enrolled |
France: 3
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Country: Number of subjects enrolled |
Germany: 2
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Country: Number of subjects enrolled |
Italy: 8
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Worldwide total number of subjects |
29
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EEA total number of subjects |
19
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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) |
2
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Children (2-11 years) |
17
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Adolescents (12-17 years) |
9
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Adults (18-64 years) |
1
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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 |
- | ||||||||||||||||||
Pre-assignment
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Screening details |
Participants were recruited by multiple treatment centers in the United States and Europe. | ||||||||||||||||||
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 |
Not applicable
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Blinding used |
Not blinded | ||||||||||||||||||
Arms
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Arm title
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Methoxsalen with ECP | ||||||||||||||||||
Arm description |
Participants received methoxsalen 20 μg/ml in conjunction with ECP procedure three times per week for Weeks 1 to 4, and two times per week for Weeks 5 to 12. | ||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||
Investigational medicinal product name |
Methoxsalen
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Investigational medicinal product code |
298-81-7
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Other name |
Methoxalen Sterile Solution
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Pharmaceutical forms |
Solution for blood fraction modification
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Routes of administration |
Extracorporeal use
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Dosage and administration details |
Participants received methoxsalen 20 μg/ml in conjunction with extracorporeal (ECP) use procedure three times per week for Weeks 1 to 4, and two times per week for Weeks 5 to 12.
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Baseline characteristics reporting groups
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Reporting group title |
Overall Study
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Reporting group description |
- | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Methoxsalen with ECP
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Reporting group description |
Participants received methoxsalen 20 μg/ml in conjunction with ECP procedure three times per week for Weeks 1 to 4, and two times per week for Weeks 5 to 12. | ||
Subject analysis set title |
Stage 0 = No GvHD rash
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
No GvHD rash
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Subject analysis set title |
Stage 1 = Maculopapular rash on < 25% body surface area (BSA)
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Maculopapular rash on < 25% body surface area (BSA)
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Subject analysis set title |
Stage 2 = Maculopapular rash on 25-50% BSA
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Maculopapular rash on 25-50% BSA
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Subject analysis set title |
Stage 3 = Maculopapular rash on >50% BSA
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Maculopapular rash on >50% BSA
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Subject analysis set title |
Stage 4 = Generalized erythroderma plus bullous formation
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Generalized erythroderma plus bullous formation, which are blisters bigger than 5 mm across
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Subject analysis set title |
Stage 0 = Bilirubin < 2.0 mg/dL
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Bilirubin < 2.0 mg/dL
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Subject analysis set title |
Stage 1 = Bilirubin 2.0-3.0 mg/dL
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Bilirubin 2.0-3.0 mg/dL
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Subject analysis set title |
Stage 2 = Bilirubin 3.1-6.0 mg/dL
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Bilirubin 3.1-6.0 mg/dL
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Subject analysis set title |
Stage 3 = Bilirubin 6.1-15.0 mg/dL
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Bilirubin 6.1-15.0 mg/dL
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Subject analysis set title |
Stage 4 = Bilirubin > 15.0 mg/dL
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Subject analysis set type |
Full analysis | ||
Subject analysis set description |
Bilirubin > 15.0 mg/dL
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End point title |
Number of Participants Achieving Overall Response (OR) Using the Modified International Bone Marrow Transplant Registry (IBMTR) Severity Index at Week 4 [1] | ||||||
End point description |
OR using the modified IBMTR Severity Index is defined as complete response (CR) + partial response (PR) as follows:
• CR: complete resolution of all signs and symptoms of aGvHD in all evaluable organs without addition of next-line systemic treatment
• PR: improvement of 1 stage in 1 or more aGvHD target organs without progression in others and without addition of next-line systemic treatment
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End point type |
Primary
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End point timeframe |
4 weeks
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Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: It was not possible to create an analysis module in this database because there was only one arm. |
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No statistical analyses for this end point |
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End point title |
Number of Participants With Adverse Events | ||||||||||||
End point description |
Clinically significant changes in vital signs, laboratory values and investigations are reported as adverse events. Summary data are provided below, with details listed in the adverse events module.
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End point type |
Secondary
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End point timeframe |
16 weeks
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No statistical analyses for this end point |
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End point title |
Percentage of Participants Achieving Overall Response (OR) Using Modified IBMTR Severity Index at Week 8 | ||||||||
End point description |
OR using the modified IBMTR Severity Index is defined as complete response (CR) + partial response (PR) as follows:
• CR: complete resolution of all signs and symptoms of aGvHD in all evaluable organs without addition of next-line systemic treatment
• PR: improvement of 1 stage in 1 or more aGvHD target organs without progression in others and without addition of next-line systemic treatment
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End point type |
Secondary
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End point timeframe |
8 weeks
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No statistical analyses for this end point |
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End point title |
Percentage of Participants Achieving Overall Response (OR) Using Modified IBMTR Severity Index at Week 12 | ||||||||
End point description |
OR using the modified IBMTR Severity Index is defined as complete response (CR) + partial response (PR) as follows:
• CR: complete resolution of all signs and symptoms of aGvHD in all evaluable organs without addition of next-line systemic treatment
• PR: improvement of 1 stage in 1 or more aGvHD target organs without progression in others and without addition of next-line systemic treatment
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End point type |
Secondary
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End point timeframe |
12 weeks
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No statistical analyses for this end point |
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End point title |
Duration of Response (Days) Within 16 Weeks Using Modified IBMTR Severity Index | ||||||||
End point description |
Duration of first response is presented for participants whose disease progressed.
Duration of response is defined in the following way:
Participants whose response failed: Date at which 1st disease progression occurs - date of 1st response +1.
Participants whose response did not relapse: Date of 16-week follow-up or final assessment prior to week 16 (if participant withdrew early) - date of 1st response.
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End point type |
Secondary
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End point timeframe |
16 weeks
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No statistical analyses for this end point |
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End point title |
Overall Response Rate (ORR) According to the Modified Glucksberg Criteria | ||||||||||||||
End point description |
ORR is defined as the percentage of participants who achieve an overall response after 4 weeks, 8 weeks, and 12 weeks of ECP treatment according to a scoring algorithm applied to calculate the grade of aGvHD using the modified Glucksberg Criteria.
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End point type |
Secondary
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End point timeframe |
4 weeks, 8 weeks, and 12 weeks
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No statistical analyses for this end point |
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End point title |
Cumulative Dose of Daily Steroids | ||||||||
End point description |
Steroids administered from diagnosis of aGvHD to 12 weeks after initiation of ECP treatment.
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End point type |
Secondary
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End point timeframe |
12 weeks
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No statistical analyses for this end point |
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End point title |
Number of Participants With Skin Rated as Stage 0 - 4 Using the Modified Glucksberg Criteria | ||||||||||||||||||||||||||||||||||||
End point description |
Number of participants whose skin was rated as Stage 0 - 4 using the modified Glucksberg criteria based on the Graft versus Host Disease (GvHD) rash - Stages are defined in the reporting group titles shown in the table.
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End point type |
Secondary
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End point timeframe |
4 weeks, 8 weeks, and 12 weeks
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No statistical analyses for this end point |
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End point title |
Number of Participants With Liver Rated as Stage 0 - 4 Using the Modified Glucksberg Criteria | ||||||||||||||||||||||||||||||||||||
End point description |
Number of participants whose liver was rated as Stage 0 - 4 on the modified Glucksberg criteria - Stages are based on level of bilirubin, as defined in the table's arm/group descriptions.
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End point type |
Secondary
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End point timeframe |
4 weeks, 8 weeks, and 12 weeks
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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 16 weeks
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Assessment type |
Systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
21.0
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Reporting groups
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Reporting group title |
Methoxsalen with ECP
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Reporting group description |
Participants received methoxsalen 20 μg/ml in conjunction with ECP procedure three times per week for Weeks 1 to 4, and two times per week for Weeks 5 to 12. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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15 Mar 2016 |
Changes made to provide more detailed information for the investigators and ensure study success.
Extended the duration of the trial, adding time points at which to collect measurements.
Adjusted inclusion/exclusion criteria and recording requirements, and added a risk/benefit statement.
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27 Jul 2017 |
Modified inclusion and exclusion criteria and extended the recording period for adverse events. |
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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. | |||
This study did have a notable limitation in its single-group study design. This may limit a more robust assessment vs standard of care alone for primary endpoint of overall response and secondary endpoints steroid sparing and disease progression. |