Role of Topical Putrescine (Fibrostat) for Prevention of Hypertrophic Scars in Mammoplasty Patients

NCT ID: NCT03376620

Last Updated: 2017-12-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

56 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-09-02

Study Completion Date

2016-07-15

Brief Summary

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Linked to previous Clinical Trial E92:069 in which biochemical effect of 1,4 diaminobutane was studied in human scar harvested at revision surgery after a 12 week application. Analytical data was collected in this phase of the work completed in 1999. This was then followed by clinical correlation in a scar prevention model with topical application of 1,4 diaminobutane for 12 weeks and measuring duredness , as well photographic and POSAS score data for quality of scar formation.

Detailed Description

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In this study, patients were "randomized" into one of 2 study groups described below. They agreed to being treated on the right side or the left with active agent, while the other side was to receive inactive cream. The active molecule is called Fibrostat or 1,4 diaminobutane and is a naturally occurring inhibitor of scar formation. The inactive jar contains the vehicle alone without Fibrostat.

The patients received both cream types to be applied to the appropriate side assigned by the randomization process, one numbered jar each per breast in the order and amount as explained in detail by the patient educator. The cream was applied daily and in the same order, one jar for the right and the other jar for the left consistently. The randomization was performed at the factory with an assigned number recorded on each jar and the jar contents listed and recorded with its assigned number. Each jar of active cream is randomly assigned with another jar of inactive cream to form a pair which were both given to the patient. The cream in both jars looks and smells the same. Neither the patient nor the study doctor knew which breast as receiving the active agent. In an emergency, this information was to be made available.

Participation in the study was for 12 weeks. the patients were seen for photos and scar testing using a painless surface testing device called a Rex® durometer at 1, 3, 6, and 12 weeks post op.

The researcher could decide to take patients off this study if a patient were to develop a rash during the run-in period of 1 week from the cream on either side.

The patients could stop participating at any time. However, this was usually accompanied by a valid reason such as lack of transportation to regular follow up appointments. No serious effects were seen and the only patients to stop participation in the study except 1 which was lost to follow-up could be accounted for. The results were revealed to patients at the completion of the 12 week trial.

Conditions

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Hypertrophic Scar

Keywords

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Prevention of hypertrophic scar

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Double-Blind Randomized Controlled Trial; Patient as their own control
Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Investigators
Label number coded by manufacturer and released after blinding period

Study Groups

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10% Urea cream

Opposite breast scars treated OD at hs simultaneously using sham 10% Urea cream

Group Type SHAM_COMPARATOR

10% Urea cream

Intervention Type DRUG

Daily application to surgical breast scars of 10% Urea cream on the sham side

Active cream with 1,4 diaminobutane

Other breast scar treated daily with active cream with 1,4 diaminobutane topically OD at hs

Group Type ACTIVE_COMPARATOR

1,4-Diaminobutane

Intervention Type DRUG

Daily application to surgical breast scars of 1,4 diaminobutane on the active side

Interventions

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1,4-Diaminobutane

Daily application to surgical breast scars of 1,4 diaminobutane on the active side

Intervention Type DRUG

10% Urea cream

Daily application to surgical breast scars of 10% Urea cream on the sham side

Intervention Type DRUG

Other Intervention Names

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Fibrostat

Eligibility Criteria

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Exclusion Criteria

\-
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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University of Manitoba

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

References

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Dolynchuk KN, Tredget EE. A Preliminary Report of the Biochemical and Clinical Effects of 1,4-Diaminobutane on Prevention of Human Hypertrophic Scars. Plast Reconstr Surg. 2020 Jan;145(1):76e-84e. doi: 10.1097/PRS.0000000000006413.

Reference Type DERIVED
PMID: 31881614 (View on PubMed)

Other Identifiers

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B2008:134

Identifier Type: -

Identifier Source: org_study_id