ClinicalTrials.gg
CompletedNCT03472287Updated Feb 10, 2020Results posted

To Evaluate the Pharmacokinetic of Diacerein and Rhein After Maximum Use in Patients With Epidermolysis Bullosa (EB)

A Phase 1 interventional study of Diacerein 1% Ointment in Epidermolysis Bullosa (EB), Epidermolysis Bullosa Simplex and Dystrophic Epidermolysis Bullosa, sponsored by Castle Creek Pharmaceuticals, LLC. Completed at 3 sites in United States. Open to participants aged 4 Years and older. Per ClinicalTrials.gov, last updated 2020-02-10.

Sponsored by Castle Creek Pharmaceuticals, LLC · Phase 1, Interventional, and Other

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Phase
Phase 1
Study type
Interventional
Enrollment
11
Allocation
Non-randomized
Ages
4 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 41 studies in Epidermolysis Bullosa with a site in United States — 9 open to participants now, 12 under way, 3 of them phase 3. Epidermolysis Bullosa · United States.

Enrollment
23rd of 36
11 · median 16
Started
2018
the only one that year
Phase 1
7 of 41
2 open now
Registered
20th of 41
by date
Lead sponsor
2 of 41
Castle Creek Pharmaceuticals, LLC

Among the 41 studies in Epidermolysis Bullosa with a site in United States, this one is the 23rd largest by enrollment of the 36 interventional ones that give a count, is the only one that started in 2018, is one of 7 in phase 1, and was the 20th registered.

Epidermolysis Bullosa

85 studies on the registry are indexed under Epidermolysis Bullosa; 17 are open to participants now.

Browse Epidermolysis Bullosa studies →

Open to participants now

9 of the 41 studies in Epidermolysis Bullosa with a site in United States are open now. Recruiting first, the newest first:

4 more — sign in →

All 9 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 11 Epidermolysis Bullosa studies recruiting now, 9 (82%) set no upper age limit and 2 (18%) stop at 75 or younger; 10 take children under 18; 1 takes healthy volunteers.

This study: 4 Years and older · all sexes · no healthy volunteers.

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02

Study summary

A pharmacokinetic (PK) study in 16-20 EB subjects to be allocated to two cohorts. Cohort 1 to include 8-10 subjects (ages 12 yrs and older); Cohort 2 to include 8-10 subjects (ages 6 months-11 yrs, inclusive). Cohort 2 only included subjects 4 yrs and older. Serial PK blood sampling collected on Days 1 and 10. Analyses were performed to determine the concentrations of diacerein and rhein.

Read the detailed description

This was an open-label, single-period study that intended to include subjects with EB consisting of infants/ children (ages 6 months to 11 years, inclusive) and adolescents/ adults (ages 12 years and older). The study included 2 cohorts.

Cohort 1 was to include adolescent/adult subjects with EB (ages 12 years and older);

Cohort 2 was to include infants/children with EB (ages 4 to 11 years, inclusive).

For both cohorts, the study intended to enroll subjects with epidermolysis bullosa simplex (EBS), dystrophic epidermolysis bullosa (DEB), and junctional epidermolysis bullosa (JEB) with lesions encompassing >/=2% BSA. The diacerein application area was >/=5% BSA and included lesioned and non-lesioned skin (if lesions accounted for \<5% BSA); however, topical administration was \</=30% BSA. On Days 1 and 10, the topical dose of study drug was applied by study staff, and blood was sampled for PK analyses of diacerein and rhein pre-dose and through 8 hours post-application. On Days 2 to 9, study drug was applied to the application area(s) at home. For Cohort 1, trough PK samples were collected on any 2 available days from Days 3 through 9, and study drug was applied after blood draw, while for Cohort 2 trough PK analyses were not performed.

03

Conditions studied

  • Epidermolysis Bullosa (EB)
  • Epidermolysis Bullosa Simplex
  • Dystrophic Epidermolysis Bullosa
  • Junctional Epidermolysis Bullosa

Keywords

  • EB
  • EBS
  • DEB
  • JEB
04

Who can participate

Ages eligible
4 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  • At least 12 years of age (Cohort 1) or at least 6 months of age to 11 years, inclusive (Cohort 2) at screening. For US only: at least 4 years of age to 11 years, inclusive (Cohort 2)
  • The subject must weigh at least 9 kg (19.8 lbs) at Screening.
  • Subject has a documented genetic mutation consistent with EB.
  • Subject has EB lesions on ≥ 2% body surface area (BSA) and the EB lesions are in the following body areas: a. Localized: plantar and/or palmar areas, b. Generalized: arms, legs, torso, hands and feet.

Key Exclusion Criteria:

  • Subject has EB lesions where drug will be applied that are infected
  • Subject has used any diacerein containing product within 1 month prior to Visit 1
  • Subject has used systemic immunotherapy or cytotoxic chemotherapy within 60 days prior to dosing.
  • Subject has used systemic steroidal therapy or has used topical steroidal therapy on the EB lesions in the application area within 14 days prior to dosing
  • Subject has participated in an drug trial in which administration of an investigational study medication occurred within 30 days prior to dosing
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
11 participants (actual)

Study arms

  • Experimental
    Cohort 1 (Adolescents, Adults)

    Adolescent and adult subjects with EB (aged 12 years and older) received diacerein 1% ointment daily for 10 days.

    Drug: Diacerein 1% Ointment

  • Experimental
    Cohort 2 (Children)

    Children with EB (aged 4 to 11 years, inclusive) received diacerein 1% ointment daily for 10 days.

    Drug: Diacerein 1% Ointment

Interventions

06

What researchers measure

Primary outcomes

  1. Detectable Plasma Concentrations of Diacerein and Rhein

    Bioanalytical analyses were performed to determine concentrations levels of diacerein and rhein in plasma using validated bioanalytical methods. For Cohort 1, blood samples were taken at pre-dose and 0.5, 1, 2, 3, 4, 6, and 8 hours post-dose. For Cohort 2, blood samples were taken at pre-dose and 1, 2, 4, 6, and 8 hours post-dose. Trough PK samples were collected on any 2 available days from Days 3 through 9 for Cohort 1 only. Summary statistics for each scheduled time were only reported if at least 50% of subjects had quantifiable concentrations.

    Time frame: Days 1-10, at select time points per protocol

07

Results

Posted Feb 10, 2020

Participant flow

Participant flow — Overall Study
MilestoneCohort 1 (Adolescents, Adults)Cohort 2 (Children)
Started83
Completed83
Not completed00

Outcome measures

PrimaryDetectable Plasma Concentrations of Diacerein and Rhein

Bioanalytical analyses were performed to determine concentrations levels of diacerein and rhein in plasma using validated bioanalytical methods. For Cohort 1, blood samples were taken at pre-dose and 0.5, 1, 2, 3, 4, 6, and 8 hours post-dose. For Cohort 2, blood samples were taken at pre-dose and 1, 2, 4, 6, and 8 hours post-dose. Trough PK samples were collected on any 2 available days from Days 3 through 9 for Cohort 1 only. Summary statistics for each scheduled time were only reported if at least 50% of subjects had quantifiable concentrations.

Time frame:
Days 1-10, at select time points per protocol
Reported as:
Count of participants · Participants
Detectable Plasma Concentrations of Diacerein and Rhein
ParticipantsCohort 1 (Adolescents, Adults)Cohort 2 (Children)
Rhein Below the limit of quantification:EBS32
Rhein Below the limit of quantification:DEB00
Rhein Above Lower limit of quantification:EBS11
Rhein Above Lower limit of quantification:DEB40
Diacerein Below the limit of quantification:EBS43
Diacerein Below the limit of quantification:DEB40
Diacerein Above Lower limit of quantification:EBS00
Diacerein Above Lower limit of quantification:DEB00

Adverse events

Collected over Baseline to 30 days after last dose of study drug application (40 days). Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Cohort 1 (Adolescents, Adults)0/8 (0%)0/8 (0%)1/8 (12.5%)
Cohort 2 (Children)0/3 (0%)0/3 (0%)0/3 (0%)
Most frequent other events
Most frequent other events
EventCohort 1 (Adolescents, Adults)Cohort 2 (Children)
PyrexiaGeneral disorders1/80/3

Baseline characteristics

Age, Continuous
Age, Continuous(years)Cohort 1 (Adolescents, Adults)Cohort 2 (Children)Total
Mean26.5 ± 11.748.3 ± 1.5321.5 ± 13.0
Sex: Female, Male
Sex: Female, Male(Participants)Cohort 1 (Adolescents, Adults)Cohort 2 (Children)Total
Female516
Male325
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Cohort 1 (Adolescents, Adults)Cohort 2 (Children)Total
Hispanic or Latino123
Not Hispanic or Latino718
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Cohort 1 (Adolescents, Adults)Cohort 2 (Children)Total
American Indian or Alaska Native000
Asian011
Native Hawaiian or Other Pacific Islander000
Black or African American101
White729
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(Participants)Cohort 1 (Adolescents, Adults)Cohort 2 (Children)Total
United States8311
EB Classification per Cohort
EB Classification per Cohort(participants)Cohort 1 (Adolescents, Adults)Cohort 2 (Children)Total
Epidermolysis Bullosa Simplex (EBS)437
Dystrophic Epidermolysis Bullosa (DEB)404
Junctional Epidermolysis Bullosa (JEB)000
08

Study locations

3 sites
  • Stanford School of Medicine
    Palo Alto, California 94304, United States
  • Northwestern University Medical Center
    Chicago, Illinois 60654, United States
  • UNC Dermatology
    Chapel Hill, North Carolina 27599, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from May 2018 to primary completion in Jan 2019, 8 months.

Results were first posted in Feb 2020, 1 year after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 14, 2018
First posted
Mar 21, 2018
StartActual
May 18, 2018
Primary completionActual
Jan 31, 2019
CompletionActual
Feb 14, 2019
Results first posted
Feb 10, 2020
Last update
Feb 10, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 10, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03472287
Lead sponsor
Castle Creek Pharmaceuticals, LLC
Responsible party
Sponsor
First posted
Mar 21, 2018
Start date
May 18, 2018
Primary completion
Jan 31, 2019
Completion
Feb 14, 2019
Results posted
Feb 10, 2020
Last update
Feb 10, 2020

Study contacts

Mary Spellman
study chair · Castle Creek Pharmaceuticals, LLC

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2020. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Diacerein

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