ClinicalTrials.gg
CompletedNCT03472534Updated Feb 5, 2020Results posted

A 21 Day Irritation Study in Healthy Volunteers With Diacerein 1% Ointment

A Phase 1 interventional study of diacerein 1% ointment in Healthy, sponsored by Castle Creek Pharmaceuticals, LLC. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-02-05.

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

Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →

Phase
Phase 1
Study type
Interventional
Enrollment
46
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

Single center, randomized, controlled, evaluator blinded, within-subject study to evaluate the irritation potential of diacerein1% ointment on normal skin of healthy volunteers, using a cumulative irritancy patch test (CIPT) procedure.

Read the detailed description

This study was designed to assess the cumulative irritation potential of diacerein 1% ointment in comparison with vehicle ointment, 0.2% sodium lauryl sulfate (SLS) (positive control), and 0.9% saline (negative control) on normal skin of healthy volunteers using a cumulative irritancy patch test (CIPT) procedure applied once daily for 21 days.

02

Conditions studied

  • Healthy
03

In context

Lead sponsor

Castle Creek Pharmaceuticals, LLC is the lead sponsor of 7 studies on the registry; none are open to participants now.

Of its 7 completed or terminated interventional studies of FDA-regulated products, 7 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Key Inclusion Criteria:

  • Is a healthy male or female (to be confirmed by medical history);
  • Is 18 years of age or older;
  • In the case of a female of , is using two acceptable forms of ;
  • In the case of a female of childbearing potential, has a negative urine pregnancy test (UPT) on Day 1 prior to randomization and are willing to submit to a UPT at the end of study (EOS);
  • Is free of any systemic or dermatological disorder, which, in the opinion of the Investigator, will interfere with the study results or increase the risk of AEs;
  • Is of any Fitzpatrick Skin Type or race, providing the skin pigmentation will allow discernment of erythema

Key Exclusion Criteria:

  • Has any visible skin disease at the application site which, in the opinion of the Investigator, will interfere with the evaluation of the test site reaction;
  • Is using systemic/topical within 3 weeks prior to and/or during the study, or systemic/topical antihistamines 72 hours prior to and during the study;
  • Is not willing to refrain from using systemic/topical anti-inflammatory analgesics such as aspirin, (occasional use of acetaminophen will be permitted);
  • Is using medication which, in the opinion of the Investigator, will interfere with the study results;
  • Is unwilling or unable to refrain from the use of sunscreens, cosmetics, creams, ointments, lotions or similar products on the back during the study;
  • Has psoriasis and/or active atopic dermatitis/eczema;
  • Has a known sensitivity or allergy to constituents of the materials being evaluated including diacerein, mineral oil, petrolatum, cetyl alcohol, D\&C Yellow #10 and/or ethyl paraben;
  • Has damaged skin in or around the test sites, including sunburn, excessively deep tans, uneven skin tones, tattoos, scars, excessive hair, numerous freckles, or other disfigurations of the test site;
  • Has received treatment for any type of internal cancer within 5 years prior to study entry;
  • Has any known sensitivity to adhesives; and/or
  • Has received any drug(s) within 4 weeks prior to study entry
Terms in these criteria, in plain language(4)

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.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

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
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
46 participants (actual)

Study arms

  • Other
    study in healthy volunteers

    diacerein 1% ointment

    Drug: diacerein 1% ointment

Interventions

  • diacerein 1% ointment applied to the skin of the infrascapular area of the back under occlusive patch for 21 days.

    Also known as: CCP-020

06

What researchers measure

Primary outcomes

  1. Skin Irritation Score

    Evaluation of the sum of all subjects' cumulative irritation scores for 21 days at each patch site. Cumulative Irritation Score is a visual score rating the degree of erythema, edema, and other signs of cutaneous irritation: Minimum = 0; Maximum = 6; higher score is worse outcome.

    Time frame: Daily for 21 days

07

Results

Posted Feb 5, 2020
Limitations and caveats
There were no limitations or caveats on this study.

Participant flow

Participant flow — Overall Study
MilestoneSingle Cohort (Healthy Volunteers)
Started46
Diacerein 1% ointment46
Vehicle ointment46
0.2% sodium lauryl sulfate (sls)46
0.9% saline46
Completed35
Not completed11
Withdrew: Withdrawal by subject9
Withdrew: Adverse event2

Outcome measures

PrimarySkin Irritation Score

Evaluation of the sum of all subjects' cumulative irritation scores for 21 days at each patch site. Cumulative Irritation Score is a visual score rating the degree of erythema, edema, and other signs of cutaneous irritation: Minimum = 0; Maximum = 6; higher score is worse outcome.

Time frame:
Daily for 21 days
Reported as:
Number · Normalized cumulative irritation score
Skin Irritation Score
Normalized cumulative irritation scoreSingle Cohort (Healthy Volunteers)
Diacerein 1% ointment0
Vehicle 1% ointment0
0.2% sodium lauryl sulfate (SLS) (positive control339
0.9% saline (negative control)" Arms/Groups)15
Statistical analysis
  • Single Cohort (Healthy Volunteers) · Fisher Exact · p = <0.0001

Adverse events

Collected over Adverse event collection occurred from timing of first dose until completion of last study visit, i.e., 21 days.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Single Cohort (Healthy Volunteers)0/46 (0%)0/46 (0%)0/46 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Single Cohort (Healthy Volunteers)
Mean53 ± 13
Sex: Female, Male
Sex: Female, Male(Participants)Single Cohort (Healthy Volunteers)
Female34
Male12
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Single Cohort (Healthy Volunteers)
Count of Participants — American Indian or Alaska Native0
Count of Participants — Asian1
Count of Participants — Native Hawaiian or Other Pacific Islander0
Count of Participants — Black or African American27
Count of Participants — White18
Count of Participants — More than one race0
Count of Participants — Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Single Cohort (Healthy Volunteers)
United States46
08

Study locations

1 site
  • TKL Research
    Fair Lawn, New Jersey 07410, 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 Jan 2018 to primary completion in Jan 2018, 0 months.

Results were first posted in Feb 2020, 2 years after primary completion.

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

Registered
Jan 30, 2018
First posted
Mar 21, 2018
StartActual
Jan 9, 2018
Primary completionActual
Jan 30, 2018
CompletionActual
Jan 30, 2018
Results first posted
Feb 5, 2020
Last update
Feb 5, 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 5, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03472534
Lead sponsor
Castle Creek Pharmaceuticals, LLC
Collaborators
TKL Research, Inc.
Responsible party
Sponsor
First posted
Mar 21, 2018
Start date
Jan 9, 2018
Primary completion
Jan 30, 2018
Completion
Jan 30, 2018
Results posted
Feb 5, 2020
Last update
Feb 5, 2020

Study contacts

Mary Spellman, MD
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 ↗

Not currently enrolling

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

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Diacerein

Start the discussion