Dermatitis HerpetiformisPhase 4NCT01115244
Use of Dapsone Gel, 5% for Treating Dermatitis Herpetiformis
A Phase 4 study testing Dapsone gel, 5% in people with Dermatitis Herpetiformis, run by Vanderbilt University Medical Center at 1 site in United States.
Trial summary
The primary objective of this study is to evaluate the efficacy of dapsone gel, 5% in the treatment of dermatitis herpetiformis. The primary efficacy end point will be the proportion of patients achieving success based on mean % reduction from baseline in total lesion counts at week six. Read more about this study
- Who is it for?
- Ages 12 years and older
- Conditions the study is for
- Dermatitis Herpetiformis
- What is being tested?
- Dapsone gel, 5%
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 1 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2010to Mar 2012
- Phase
- Phase 4
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 12 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Age 12 years or older
- Clinical diagnosis of dermatitis herpetiformis, as previously diagnosed by the patient's primary dermatologist or diagnosed by agreement of the two investigators
- Active disease at time of enrollment, defined as at least five inflammatory lesions (to include papules, plaques and vesicles) on the bilateral elbows or bilateral knees
Who cannot join
- Patients taking oral dapsone or those who have taken oral dapsone within four weeks prior to enrollment
- Patients using any other topical treatment for dermatitis herpetiformis at time of enrollment or within the four weeks prior to enrollment
- Patients with known allergy or hypersensitivity to dapsone, sulfa drugs or excipients of the dapsone gel product
- Women will be excluded if pregnant or nursing
- Women of childbearing potential must be practicing an effective method of birth control as determined by the enrolling physician. If oral contraceptives are the method of choice, then the patient must have been on a stable dose for a minimum of 3 months. (This is the same guideline used for women of childbearing potential in previous studies of acne patients.)
Trial locations and contacts
1 site in 1 country.
United States1 site
Vanderbilt University - One Hundred Oaks
Nashville, Tennessee, 37204
About this study
Official title: Dapsone Gel, 5% for Topical Treatment of Dermatitis Herpetiformis
The primary objective of this study is to evaluate the efficacy of dapsone gel, 5% in the treatment of dermatitis herpetiformis. The primary efficacy end point will be the proportion of patients achieving success based on mean % reduction from baseline in total lesion counts at week six. Success for lesion reduction will be defined as statistically greater mean percent reductions at week six in the dapsone gel-treated extremity compared with the control extremity of each patient.
Read the detailed description
The study will be a prospective evaluation of dapsone gel, 5% in patients with a clinical diagnosis of dermatitis herpetiformis. Active disease must occur on the patients' bilateral elbows or bilateral knees at the time of study enrollment. Active disease will be defined as five or more papules/pustules/vesicles on an extremity. Randomization of one of the patient's extremities (either one elbow or one knee) to the treatment group will occur at time of enrollment. Randomization will be in the sequence of right side assigned to odd numbered patients and left side assigned to even numbered patients. Thus, the first patient to be enrolled, patient number one, would be randomized to treatment on his or her right side. Depending on the site of active disease, he or she would apply topical dapsone gel, 5% to the right elbow or knee twice daily for the duration of the study.
No blinding of the patients or the PI will occur. The co-investigator will be blinded to whether the photographs presented to him at the end of the study are those of a treated or untreated extremity.
The patients will be screened for study enrollment in a private clinic room within the dermatology clinic at One Hundred Oaks. Patients will be presented with a study summary sheet and a consent form. They will be allowed to ask questions pertaining to the study protocol. Information provided to them will be that found in the study protocol alone. If desired, informed consent can be taken home with the patient to consider, and enrollment can be performed at a later date. In that instance, the patient would be brought back for an additional visit at the time of consent and study enrollment. Study enrollment and first treatment will be performed on the day of study consent. Digital photographs of each elbow or each knee (treatment and control) will be taken on the day of enrollment to serve as a baseline evaluation. The number of lesions (including papules, plaques and vesicles) will be recorded for the treatment and control elbow or knee. Measurements of each lesion will be taken and recorded as well. This data will be written in a chart and stored in the PI's notebook in a locked cabinet in the department of dermatology. Digital photographs will be printed out on the same day as the visit and placed in the notebook as well. Two copies of each photograph will be made. Each photograph will be assigned a letter, A through Z, based on a code for each patient. One copy of each set of photographs will also include the date. No patient identifiable features will be included in the photograph such as the face or eyes. Each photograph will be of the treated or control area only. The code to identify patient photographs will be assigned by the Data and Safety Monitor and kept in a separate locked cabinet. The code will be broken following the blinded evaluation of the photographs by co-investigator.
The patient will be given oral instructions regarding the application of topical dapsone gel, 5% by the PI on the day of enrollment. The PI will apply the first treatment to the randomized extremity during the first clinic visit. The patient will then remain in the treatment room for fifteen minutes to evaluate for any immediate adverse reaction. The PI will remain in the room with the patient. At the end of the fifteen minute evaluation, the patient will be sent home with written instructions for application and a 30gm tube of ACZONE™ (dapsone) Gel, 5%. Patients will apply the study drug to the indicated elbow or knee each morning and evening for the two weeks. They will return to the dermatology clinic in two weeks and be seen in a private clinic room by the PI for a follow up visit. At that time, photographs, lesion counts and measurements will be taken again, just as they were at the initial visit. The patient will be asked to report any adverse events at that time. Patients will be instructed to continue treatment and follow up in two weeks. The same parameters will be evaluated at the four week visit and again at the six week visit, which will be the completion of the study.
Patients will discontinue treatment after six weeks. The co-investigator will be presented will all photograph marked with the patient letter only. He will not know the sequence of the photographs or dates taken. He will then assign a number according to his subjective evaluation of the clinical photographs, while also being blinded to which elbow or knee was treated, right or left. The scores assigned will follow the criteria listed in the investigator's Dermatitis Herpetiformis Assessment Score. The code to the photographs will be broken after the completion of photograph evaluation. Photographs of a set will be matched to those with both letter and date to determine the scores in chronological order.
Six weeks after completion of treatment each patient will be contacted by phone and asked a series of five questions. That will conclude the study.
- Conditions
- Dermatitis Herpetiformis
- Being tested
- Dapsone gel, 5%
- Keywords
- Dermatitis herpetiformis, Dapsone
- Medical subject headings
- Dermatitis Herpetiformis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Dapsone gel, 5%Drug
Also called ACZONE™ (dapsone) Gel, 5%
ACZONE™ (dapsone) Gel, 5% will be applied to one elbow or knee, randomized at time of enrollment. Application will be topical to the same location twice daily (morning and evening) for six weeks.
| Study group | Role | What they receive |
|---|---|---|
| Dapsone gel, 5% | Experimental | ACZONE™ (dapsone) Gel, 5% will be applied to one elbow or knee, randomized at time of enrollment. Application will be topical to the same location twice daily (morning and evening) for six weeks. Receives: Drug: Dapsone gel, 5% |
| Not treated | No intervention | One arm of the patient will be left untreated. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number and Size of All Lesions on the Treated and Untreated Elbows or Knees of Patients With Dermatitis Herpetiformis Who Have One Extremity Treated With Dapsone Gel, 5%
The primary objective is to evaluate the efficacy of dapsone gel, 5% in the treatment of dermatitis herpetiformis. The primary efficacy end point will be the proportion of patients achieving success based on mean % reduction from baseline in total lesion counts at week six. Digital photographs of each elbow or each knee (treatment and control) will be taken. The number and size of lesions will be recorded for the treatment and control elbow or knee. This process will be repeated at each follow up visit.
Measured: 6 weeks of treatment
Secondary outcomes (2)
Number of Papules, Plaques and Vesicles on Treated and Untreated Elbows or Knees of Patients Who Have One Extremity Treated With Dapsone Gel, 5%
Lesion types will be counted at recorded at each visit. The mean lesion counts for papules, plaques and vesicles, as well as mean reduction of disease burden from baseline at week six for each of these categories, will be determined.
Measured: 6 weeks of treatment
Evaluation of Clinical Photographs and Scoring of Photographs Based on a Modified Global Acne Assessment Score
Photographs of the treated and control extremity of each patient will be presented to the investigator in a blinded manner. Scores will be assigned according to a modified Global Acne Assessment Score. This scoring system has previously been used to evaluate the efficacy of dapsone gel, 5% in the treatment of acne. The designated score is based on disease severity, number of lesions, and type of lesions.
Measured: 6 weeks of treatment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 May 2010 (estimated)
- Study startJul 2010
- Primary completionMar 2012
- Study completionMar 2012
Why it stopped: poor enrollment and lack of funding
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Dermatitis HerpetiformisStudies of the same condition, open and under way.
- More trials run by Vanderbilt University Medical CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 1 participants (actual)
Sponsor and investigators
- Lead sponsor
- Vanderbilt University Medical Center
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01115244
- Sponsor's protocol ID
- 100273
- Status last verified
- Nov 2017
- First submitted
- 23 Apr 2010
- Last updated
- 14 Dec 2017
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 14 Dec 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Dapsone Gel, 5% for Topical Treatment of Dermatitis Herpetiformis
- ClinicalTrials.gov ID
- NCT01115244
- Acronym / sponsor ID
- 100273
- Conditions
- Dermatitis Herpetiformis
- Keywords
- Dermatitis herpetiformis, Dapsone
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: poor enrollment and lack of funding
- Enrolment
- 1 participants (actual)
- Lead sponsor
- Vanderbilt University Medical CenterUniversity, hospital or other
- Study start
- Jul 2010 (actual)
- Primary completion
- Mar 2012 (actual)
- Study completion
- Mar 2012 (actual)
- First posted
- 4 May 2010 (estimated)
- Results
- Posted 14 Dec 2017
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The primary objective of this study is to evaluate the efficacy of dapsone gel, 5% in the treatment of dermatitis herpetiformis. The primary efficacy end point will be the proportion of patients achieving success based on mean % reduction from baseline in total lesion counts at week six. Success for lesion reduction will be defined as statistically greater mean percent reductions at week six in the dapsone gel-treated extremity compared with the control extremity of each patient.
Detailed description
The study will be a prospective evaluation of dapsone gel, 5% in patients with a clinical diagnosis of dermatitis herpetiformis. Active disease must occur on the patients' bilateral elbows or bilateral knees at the time of study enrollment. Active disease will be defined as five or more papules/pustules/vesicles on an extremity. Randomization of one of the patient's extremities (either one elbow or one knee) to the treatment group will occur at time of enrollment. Randomization will be in the sequence of right side assigned to odd numbered patients and left side assigned to even numbered patients. Thus, the first patient to be enrolled, patient number one, would be randomized to treatment on his or her right side. Depending on the site of active disease, he or she would apply topical dapsone gel, 5% to the right elbow or knee twice daily for the duration of the study.
No blinding of the patients or the PI will occur. The co-investigator will be blinded to whether the photographs presented to him at the end of the study are those of a treated or untreated extremity.
The patients will be screened for study enrollment in a private clinic room within the dermatology clinic at One Hundred Oaks. Patients will be presented with a study summary sheet and a consent form. They will be allowed to ask questions pertaining to the study protocol. Information provided to them will be that found in the study protocol alone. If desired, informed consent can be taken home with the patient to consider, and enrollment can be performed at a later date. In that instance, the patient would be brought back for an additional visit at the time of consent and study enrollment. Study enrollment and first treatment will be performed on the day of study consent. Digital photographs of each elbow or each knee (treatment and control) will be taken on the day of enrollment to serve as a baseline evaluation. The number of lesions (including papules, plaques and vesicles) will be recorded for the treatment and control elbow or knee. Measurements of each lesion will be taken and recorded as well. This data will be written in a chart and stored in the PI's notebook in a locked cabinet in the department of dermatology. Digital photographs will be printed out on the same day as the visit and placed in the notebook as well. Two copies of each photograph will be made. Each photograph will be assigned a letter, A through Z, based on a code for each patient. One copy of each set of photographs will also include the date. No patient identifiable features will be included in the photograph such as the face or eyes. Each photograph will be of the treated or control area only. The code to identify patient photographs will be assigned by the Data and Safety Monitor and kept in a separate locked cabinet. The code will be broken following the blinded evaluation of the photographs by co-investigator.
The patient will be given oral instructions regarding the application of topical dapsone gel, 5% by the PI on the day of enrollment. The PI will apply the first treatment to the randomized extremity during the first clinic visit. The patient will then remain in the treatment room for fifteen minutes to evaluate for any immediate adverse reaction. The PI will remain in the room with the patient. At the end of the fifteen minute evaluation, the patient will be sent home with written instructions for application and a 30gm tube of ACZONE™ (dapsone) Gel, 5%. Patients will apply the study drug to the indicated elbow or knee each morning and evening for the two weeks. They will return to the dermatology clinic in two weeks and be seen in a private clinic room by the PI for a follow up visit. At that time, photographs, lesion counts and measurements will be taken again, just as they were at the initial visit. The patient will be asked to report any adverse events at that time. Patients will be instructed to continue treatment and follow up in two weeks. The same parameters will be evaluated at the four week visit and again at the six week visit, which will be the completion of the study.
Patients will discontinue treatment after six weeks. The co-investigator will be presented will all photograph marked with the patient letter only. He will not know the sequence of the photographs or dates taken. He will then assign a number according to his subjective evaluation of the clinical photographs, while also being blinded to which elbow or knee was treated, right or left. The scores assigned will follow the criteria listed in the investigator's Dermatitis Herpetiformis Assessment Score. The code to the photographs will be broken after the completion of photograph evaluation. Photographs of a set will be matched to those with both letter and date to determine the scores in chronological order.
Six weeks after completion of treatment each patient will be contacted by phone and asked a series of five questions. That will conclude the study.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Dapsone gel, 5% | Experimental | Drug: Dapsone gel, 5%ACZONE™ (dapsone) Gel, 5% will be applied to one elbow or knee, randomized at time of enrollment. Application will be topical to the same location twice daily (morning and evening) for six weeks. |
| Not treated | No intervention | –One arm of the patient will be left untreated. |
Who may qualify
- Ages
- 12 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (3 listed)
- Age 12 years or older
- Clinical diagnosis of dermatitis herpetiformis, as previously diagnosed by the patient's primary dermatologist or diagnosed by agreement of the two investigators
- Active disease at time of enrollment, defined as at least five inflammatory lesions (to include papules, plaques and vesicles) on the bilateral elbows or bilateral knees
Key exclusion criteria (5 listed)
- Patients taking oral dapsone or those who have taken oral dapsone within four weeks prior to enrollment
- Patients using any other topical treatment for dermatitis herpetiformis at time of enrollment or within the four weeks prior to enrollment
- Patients with known allergy or hypersensitivity to dapsone, sulfa drugs or excipients of the dapsone gel product
- Women will be excluded if pregnant or nursing
- Women of childbearing potential must be practicing an effective method of birth control as determined by the enrolling physician. If oral contraceptives are the method of choice, then the patient must have been on a stable dose for a minimum of 3 months. (This is the same guideline used for women of childbearing potential in previous studies of acne patients.)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Dapsone gel, 5%Also: ACZONE™ (dapsone) Gel, 5%ACZONE™ (dapsone) Gel, 5% will be applied to one elbow or knee, randomized at time of enrollment. Application will be topical to the same location twice daily (morning and evening) for six weeks. | Drug | Dapsone gel, 5% |
Primary outcome
Number and Size of All Lesions on the Treated and Untreated Elbows or Knees of Patients With Dermatitis Herpetiformis Who Have One Extremity Treated With Dapsone Gel, 5%
Time frame: 6 weeks of treatment
The primary objective is to evaluate the efficacy of dapsone gel, 5% in the treatment of dermatitis herpetiformis. The primary efficacy end point will be the proportion of patients achieving success based on mean % reduction from baseline in total lesion counts at week six. Digital photographs of each elbow or each knee (treatment and control) will be taken. The number and size of lesions will be recorded for the treatment and control elbow or knee. This process will be repeated at each follow up visit.
2 secondary outcomes
Number of Papules, Plaques and Vesicles on Treated and Untreated Elbows or Knees of Patients Who Have One Extremity Treated With Dapsone Gel, 5%
Time frame: 6 weeks of treatment
Evaluation of Clinical Photographs and Scoring of Photographs Based on a Modified Global Acne Assessment Score
Time frame: 6 weeks of treatment
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Dec 2017.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Dapsone gel, 5% in people with Dermatitis Herpetiformis, run by Vanderbilt University Medical Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 14 Dec 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 14 Dec 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number and Size of All Lesions on the Treated and Untreated Elbows or Knees of Patients With Dermatitis Herpetiformis Who Have One Extremity Treated With Dapsone Gel, 5% (time frame: 6 weeks of treatment). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Dec 2017.