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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT06073132




Registration number
NCT06073132
Ethics application status
Date submitted
12/09/2023
Date registered
10/10/2023
Date last updated
28/06/2024

Titles & IDs
Public title
An International, Multicenter, Randomized, Double-Blind, Parallel Group, Vehicle-Controlled, Phase 2/3 Study With Open-Label Extension Evaluating the Efficacy and Safety of Diacerein 1% Ointment for the Treatment of Generalized Epidermolysis Bullosa Simplex (EBS)
Scientific title
An International, Multicenter, Randomized, Double-Blind, Parallel Group, Vehicle-Controlled, Phase 2/3 Study With Open-Label Extension Evaluating the Efficacy and Safety of Diacerein 1% Ointment for the Treatment of Generalized Epidermolysis Bullosa Simplex (EBS)
Secondary ID [1] 0 0
AC-203-EBS-007
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Generalized Epidermolysis Bullosa Simplex 0 0
Condition category
Condition code
Human Genetics and Inherited Disorders 0 0 0 0
Other human genetics and inherited disorders
Skin 0 0 0 0
Dermatological conditions
Skin 0 0 0 0
Other skin conditions

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - AC-203
Treatment: Drugs - Vehicle

Experimental: Part A AC-203 - Double-blind, AC-203 Diacerein 1% ointment, QD

Placebo comparator: Part A Vehicle ointment - Double-blind, Vehicle ointment, QD

Experimental: Part B AC-203 - Open-label extension phase, AC-203 Diacerein 1% ointment, QD


Treatment: Drugs: AC-203
The investigational product is formulated as 1% topical ointment

Treatment: Drugs: Vehicle
Vehicle-only control study medication is the same formulation as investigational product without active ingredient
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Proportion of patients achieving treatment success on the IGA of the Treatment Area, in which treatment success is defined as a score of 0 or 1 with at least a 2-point reduction
Timepoint [1] 0 0
from Baseline A (Visit 2/Day 1) to Week 8 (Visit 5/EOT)
Secondary outcome [1] 0 0
Change in % BSA of EBS lesions in the Treatment Area
Timepoint [1] 0 0
from Baseline A (Visit 2/Day 1) to Week 8 (Visit 5/EOT)
Secondary outcome [2] 0 0
Change in pain intensity score (Numeric Rating Scale for pain)
Timepoint [2] 0 0
Baseline A (Visit 2/Day 1) to Week 8 (Visit 5/EOT)
Secondary outcome [3] 0 0
Change in pruritus intensity score (Numeric Rating Scale for pruritus)
Timepoint [3] 0 0
from Baseline A (Visit 2/Day 1) to Week 8 (Visit 5/EOT)
Secondary outcome [4] 0 0
Change in the QOLEB score
Timepoint [4] 0 0
from Baseline A (Visit 2/Day 1) to Week 8 (Visit 5/EOT)
Secondary outcome [5] 0 0
Change in EBDASI score (skin activity)
Timepoint [5] 0 0
from Baseline A (Visit 2/Day 1) to Week 8 (Visit 5/EOT).

Eligibility
Key inclusion criteria
1. Patient is at least 6 months old at Visit 2 (Day 1/Baseline A).
2. Patients has been clinically diagnosed with severe EBS or intermediate EBS, confirmed by documented genetic diagnosis to have autosomal dominant mutations in KRT5 or KRT14 gene.
3. Patients with = 5% BSA of EBS lesions excluding hands and feet at Visit 2 (Day 1/Baseline A).
4. Patient's EBS lesions within the Treatment Area have an IGA score of =3 at Visit 2 (Day 1/Baseline A).
5. Patient/caregiver agrees to follow study medication application instructions.
6. Patient (and caregiver/legal guardian) agrees to report use of all prescription and over-the-counter medications, including topical therapies applied to the body, e.g., medical cleansers, bleach cleansers, bleach baths, topical antiseptics, topical disinfectants, etc. for the duration of the study.
7. Patient (and caregiver/legal guardian) is willing and able to comply with all study visits and all the protocol requirements, including completing questionnaires.
8. Patient (and caregiver/legal guardian) is able to provide written informed consent; assent based on age.
9. Female patient of childbearing potential must have a negative pregnancy test prior to randomization.
10. Female patient of childbearing potential is willing to practice highly effective contraception (i.e., pregnancy prevention method with a failure rate of < 1% per year) from Screening throughout the end of the study.
Minimum age
6 Months
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
1. Patient has a clinically significant skin disease other than EBS (e.g., psoriasis, atopic dermatitis, eczema, sun damage, etc.), or a vascular disorder associated with cutaneous erosions/ulcerations, that may confound assessments of efficacy or safety.
2. Patient has a clinically significant underlying medical condition, psychiatric condition (such as major depressive or psychotic disorder, severe intellectual disability, or alcohol or drug use disorder), or requires concomitant medication that based on the investigator's judgement may impair evaluation of the Treatment Area or exposes the patient to an unacceptable risk by study participation.
3. Patient has used any diacerein-containing product within 6 months prior to Visit 2 (Day 1/Baseline A).
4. Patient has had a cutaneous infection in the Treatment Area or use systemic antibiotics within 7 days prior to Visit 2 (Day 1/Baseline A) and prior to Visit 7 (Week 16/Baseline B).
5. Patient has uncontrolled diabetes mellitus (HbA1c = 6.5%), hepatic enzyme abnormalities (alanine aminotransferase or aspartate aminotransferase >2.5 the upper limit of normal (ULN), or total bilirubin >2.0x ULN), or renal abnormalities (estimated glomerular filtration rate [eGFR]< 30 ml/min/1.73 m2) during the Screening period.
6. Patient has a current malignancy, or a history of treatment for a malignancy within 5 years (with the exception of treated non-melanoma cutaneous malignancy e.g., surgically resected with clear margins) prior to Visit 2 (Day 1/Baseline A).
7. Patient is treated with protocol-excluded topical therapies within 2 weeks prior to Visit 2 (Day 1/Baseline A) that might influence the assessment of the Treatment Area throughout the study period.
8. Patient has been treated with topical or systemic corticosteroids within 4 weeks and with other immunosuppressive/immunomodulatory therapies or chemotherapy within 8 weeks prior to Visit 2 (Day 1/Baseline A) and prior to Visit 7 (Week 16/Baseline B).
9. Patient has been treated with an approved or investigational biologic anti-inflammatory therapy (such as monoclonal antibodies that target to modulate the immune responses) within 8 weeks prior to Visit 2 (Day 1/Baseline A).
10. Patient has been treated with any investigational drug or device within 30 days or 5 half-lives, whichever is longer, prior to Visit 2 (Day 1/Baseline A).
11. Patient has a history of allergy or hypersensitivity to any component of study medications, including diacerein or rhein.
12. Patient is pregnant or breastfeeding/lactating.
13. Patient has a planned or anticipated major surgical procedure or other activity that would interfere with their ability to comply with protocol requirements.

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
Intervention assignment
Parallel
Other design features
Phase
Phase 2
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
4/04/2024
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
1/03/2026
Actual
Sample size
Target
80
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 0 0
Premier Specialists - Kogarah
Recruitment hospital [2] 0 0
Sydney Children's Hospital - Randwick
Recruitment postcode(s) [1] 0 0
- Kogarah
Recruitment postcode(s) [2] 0 0
- Randwick
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
California
Country [2] 0 0
United States of America
State/province [2] 0 0
Colorado
Country [3] 0 0
United States of America
State/province [3] 0 0
Florida
Country [4] 0 0
United States of America
State/province [4] 0 0
Illinois
Country [5] 0 0
United States of America
State/province [5] 0 0
New York
Country [6] 0 0
United States of America
State/province [6] 0 0
Ohio
Country [7] 0 0
United States of America
State/province [7] 0 0
South Carolina
Country [8] 0 0
United States of America
State/province [8] 0 0
Texas
Country [9] 0 0
Austria
State/province [9] 0 0
Salzburg
Country [10] 0 0
Italy
State/province [10] 0 0
Milan
Country [11] 0 0
Italy
State/province [11] 0 0
Modena
Country [12] 0 0
Italy
State/province [12] 0 0
Rome
Country [13] 0 0
Philippines
State/province [13] 0 0
Davao
Country [14] 0 0
Philippines
State/province [14] 0 0
Iloilo
Country [15] 0 0
Philippines
State/province [15] 0 0
Mandaluyong
Country [16] 0 0
Philippines
State/province [16] 0 0
Muntinlupa
Country [17] 0 0
Poland
State/province [17] 0 0
Warsaw
Country [18] 0 0
Taiwan
State/province [18] 0 0
Tainan

Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Name
TWi Biotechnology, Inc.
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
The proposed Phase 2/3 trial with double-blind and open-label extension phases is an international, multicenter study designed to assess the efficacy and safety of diacerein 1% ointment in patients with generalized EBS.
Trial website
https://clinicaltrials.gov/study/NCT06073132
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Sandy Lin, PhD
Address 0 0
Country 0 0
Phone 0 0
+886-2-2657-1788
Fax 0 0
Email 0 0
sandy.lin@twibiotech.com
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/study/NCT06073132