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ScarPhase 2FS2NCT04186273

Clinical Safety and Scar Prevention Study of a Topical Antifibrotic Compound FS2.

A Phase 2 study testing Fibrosis-Inhibiting-Compound-FS2 in people with Scar and Cicatrix, run by University of British Columbia at 1 site in Canada.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

The study will investigate the safety and effectiveness of daily post surgical scar management, using a moisture-balancing base product containing different amounts of a novel (NCE) antifibrogenic compound FS2, a natural metabolite of the kynurenine pathway. Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
Conditions the study is for
Scar, Cicatrix, Hypertrophic Scar
What is being tested?
Fibrosis-Inhibiting-Compound-FS2
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
50 participants
Where
1 siteCanada
Study dates
5 Dec 2019to 1 Mar 2021
Phase
Phase 2
Are there results?
None posted in the registry

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 18 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Medically able to consent to study requirements
  • Adult, male and female trauma patients
  • Ages 18 to 65 years of age
  • Fluent in English (able to consent without a translator)
  • Isolated skin wound of 3% Total Body Surface Area
  • Participant requires partial thickness skin graft (meshed/non-meshed), face and genitalia excluded.
  • Grafted skin is between 100 cm2 and 600 cm2
  • Maximum skin graft expansion ratio is 1:1.5

Who cannot join

  • Medically unable to consent to study requirements
  • Require an English translator to lawfully consent to the study and its requirements
  • Treatment sights (skin graft sights) located on the face and genitalia
  • Expected to be medically unstable for the duration of the study period and an additional 1-month thereafter
  • Pregnant, or attempting to become pregnant
  • Known immunosuppression or immunosuppressive illness
Show all 11Show fewer
  • Subjects who had taken part in a clinical trial within 3 months prior to admission to this trial or who are currently participating in a clinical trial, whether an investigational drug was used or not.
  • Subjects who had any clinical evidence of severe ongoing or prolonged depression or mental illness
  • Subjects who smoke more than 20 cigarettes a day
  • Subjects who demonstrated evidence of drug abuse
  • Any other diagnosis, condition, physical or geographical limitation with the participant that may render, or increases the likelihood of rendering, him/her unable to complete the entire study.

Trial locations and contacts

1 site in 1 country.

Anthony Papp, MD, PhD contact

1.778.362.0161

anthony.papp@gmail.com

Canada1 site, 1 recruiting
  • VGH Burn Unit

    Vancouver, British Columbia, V5Z 1M9

    Tesnim Sairi, 604-875-4095, clinicaltrials@birchbiomed.com

    Recruiting

Other trials in Canada

About this study

Official title: Post-operative Topical Administration of Fibrosis Inhibiting Compound FS2 in a Double-blind, Randomized, Vehicle-controlled Study Evaluating the Safety and Prevention of Cutaneous Scarring in Skin Grafts and Donor Sites.

The study will investigate the safety and effectiveness of daily post surgical scar management, using a moisture-balancing base product containing different amounts of a novel (NCE) antifibrogenic compound FS2, a natural metabolite of the kynurenine pathway. Results of recent peer-reviewed, pre-clinical evidence warrant further investigation to validate therapeutic scar preventive efficacy of topically administered/delivered FS2. There are no known safety concerns with current product formulations. Recent Phase I clinical safety and tolerability data further support continuation of the research proposed in this study.

Read the detailed description

Study Arms (Investigational Conditions):

Total of 6, categorized by type of wound and treatment allocation.

Description of Study Arms:

The quality of tissue repair and scarring will be evaluated in two different, bisected post-surgical sites on the same Participant. Each wound site represents a Study Arm. Each wound site will receive two treatments, one of which is always a vehicle. In total the two wound types provide a total of 6 Study Arms for statistical analysis.

Arm 1 / Wound Type 1 (skin grafted wounds: 3-treatment groups): The wound site (injury) that requires skin grafting surgery to remove normal, uninjured skin from the same Participant to cover and repair a deep wound (a "skin graft").

Arm 2 / Wound Type (donor skin graft harvest site; 3-treatment groups): A surgical wound where a piece of normal skin is removed at uniform depth using a dermatome to harvest a skin graft ("skin graft harvest site").

The bisected wound site is randomly assigned either a control or FS2 cream treatment.

Treatment Groups: Each wound site will be used to investigate and compare three different treatments. Participants will apply the investigated treatments ("IP") as directed to allocated bisected sections of the skin grafted wound and donor wound site for 90 days. Follow-on assessments will be conducted with additional study visits on Days 180 and 270 (study endpoint).

There are four (4) differently labelled products as follows:

Treatment-1 (IP1) A single, daily application of a moisturizing cream-base.

Treatment-2 (IP2) A single, daily application of a moisturizing cream-base with FS2 (0.50% w/w).

Treatment-3 (IP3) A single, daily application of a moisturizing cream-base with FS2 (0.25% w/w). IP3 will have two different product labels to conceal the identity of the vehicle.

Control-cream (IP1), and treatments IP2 and IP3 each containing 0.50%w/w or 0.25%w/w FS2 respectively, will be topically applied to designated treatment sites once per day for a period of 90 days. Investigator and participant will be blinded from both identity of treatment product and randomized location. Each participant will be provided a different cream for each bisected-site for a total of four (4) differently labelled creams; two for the donor site, and two for the skin grafted site. Participants will discuss and be informed/reminded at each visit about study design, responsibilities, possible adverse events, proper daily wound care and cream application methods.

Being tested
Fibrosis-Inhibiting-Compound-FS2, Vehicle moisture balancing base
Medical subject headings
Cicatrix, Cicatrix, Hypertrophic, Keloid

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Fibrosis-Inhibiting-Compound-FS2Drug

    Also called FS2

    There are three (3) experimental interventions: vehicle moisture balancing base, FS2-0.25 moisturizer, and 0.5 moisturizing base.

  • Vehicle moisture balancing baseOther

    Also called Vehicle

    Vehicle base without FS2.

Study groups in NCT04186273
Study groupRoleWhat they receive
Donor Site Wound, VehicleSham comparatorA vehicle moisturizing cream base applied to a bisected area of the donor site wound (from where the skin graft skin harvested).
Receives: Other: Vehicle moisture balancing base
Donor Site Wound, FS2 0.25ExperimentalA moisturizing cream base containing 0.25%w/w of FS2, applied to a bisected area of the donor site wound (from where the skin graft skin harvested).
Receives: Drug: Fibrosis-Inhibiting-Compound-FS2
Donor Site Wound, FS2 0.5ExperimentalA moisturizing cream base containing 0.50%w/w of FS2, applied to a bisected area of the donor site wound (from where the skin graft skin harvested)
Receives: Drug: Fibrosis-Inhibiting-Compound-FS2
Skin Graft Wound, VehicleSham comparatorA vehicle moisturizing cream base applied to a bisected area of the skin grafted wound site.
Receives: Other: Vehicle moisture balancing base
Skin Graft Wound, FS2 0.25ExperimentalA moisturizing cream base containing 0.25%w/w of FS2, applied to a bisected area of the skin grafted wound site.
Receives: Drug: Fibrosis-Inhibiting-Compound-FS2
Skin Graft Wound, FS2 0.5ExperimentalA moisturizing cream base containing 0.50%w/w of FS2, applied to a bisected area of the skin grafted wound site.
Receives: Drug: Fibrosis-Inhibiting-Compound-FS2

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Vancouver Scar Scale (VSS)

    Differences in clinical scale scoring of healing, complications and scar severity using Vancouver Scar Scale. Investigator assessment of target scar or keloid using the Vancouver Scar Scale (VSS). Scale parameters include: Pigmentation (0-2), Vascularity (0-3), Pliability (0-5), and Height (0-3). Scale measurements include: minimum score of 0 = normal to a maximum score of 2, 3 or 5 depending on the parameter measured.

    Measured: 0-9 months

  2. Patient and Observer Scar Assessment Scale (POSAS)

    Differences in clinical scale scoring of healing, complications and scar severity using Patient and Observer Scar Assessment Scale (POSAS). Investigator assessment of target scar or keloid using the Patient and Observer Scar Assessment Scale (POSAS). Scale parameters include: Vascularity, Pigmentation, Thickness, Relief, Pliability, and Surface Area. Scale measurements include: minimum score of 1 = normal skin to a maximum score of 10 = worst scar imaginable.

    Measured: 0-9 months

Secondary outcomes (15)
  1. Adverse Events

    To evaluate and compare Treatment safety by the proportion of adverse events in each treatment arm.

    Measured: 0-9 months

  2. Vital Signs - systolic blood pressure

    To evaluate and compare Treatment safety by the proportion of abnormal systolic blood pressures in each participant.

    Measured: 0-9 months

  3. Vital Signs - diastolic blood pressure

    To evaluate and compare Treatment safety by the proportion of abnormal diastolic blood pressures in participant.

    Measured: 0-9 months

  4. Vital Signs - Heart Rate

    To evaluate and compare Treatment safety by the proportion of abnormal heart rates in each participant.

    Measured: 0-9 months

  5. Vital Signs - Respiratory Rate

    To evaluate and compare Treatment safety by the proportion of abnormal respiratory rates in each participant.

    Measured: 0-9 months

  6. Vital Signs - Oral Temperature

    To evaluate and compare Treatment safety by the proportion of abnormal temperatures in each participant.

    Measured: 0-9 months

  7. Physical Exam Findings

    To evaluate and compare Treatment safety by the proportion of abnormal physical exam findings in each participant.

    Measured: 0-9 months

  8. Clinical Chemistry Results

    To evaluate and compare Treatment safety by the proportion of abnormal clinical chemistry results in each participant.

    Measured: 0-9 months

  9. Hematology Results

    To evaluate and compare Treatment safety by the proportion of abnormal hematology results for each participant.

    Measured: 0-9 months

  10. Urine Analysis Results

    To evaluate and compare Treatment safety by the proportion of abnormal urine analysis results for each participant.

    Measured: 0-9 months

  11. FS2 Pharmacokinetic urine analysis data

    To obtain, evaluate and compare total urine drug concentrations for each participant and compare clearance normalized by estimated volume of distribution (Vd).

    Measured: 0-2 hours; 0-9 months

  12. FS2 Pharmacokinetic blood analysis data

    To obtain, evaluate and compare total blood drug concentrations for each participant and compare clearance normalized by estimated volume of distribution (Vd).

    Measured: 0-2 hours; 0-9 months

  13. Pain Management

    Pain Visual Analog Scale longitudinal comparison of subjective changes for each participant.

    Pain, Visual analog scale (score 0-none to 10-worse)

    Measured: 0-9months

  14. Histology (Tissue Biopsies)

    Evaluate and compare pathological assessments of punch biopsies obtained from each treatment site and compare intra site subjective findings (qualitative) for each.

    Measured: 3 months and 9 months

  15. Histology (Tissue Biopsies)

    Evaluate and compare intra site scar elevation index ratios (comparative ratio of normal skin dimensions (e.g. thickness) to those of an adjacent scar). Assessment requires histology sections of punch biopsies obtained from each treatment site and further substantiates Outcome 16 above.

    Measured: 3 months and 9 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 Dec 2019
  2. Study start5 Dec 2019
  3. Primary completion1 Feb 2021 (estimated)
  4. Study completion1 Mar 2021 (estimated)

Resources

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 2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Factorial
Model description
QUADRUPLE-BLINDED, RANDOMIZED, VEHICLE-CONTROLLED STUDY INTRA-SUBJECT CONTROLS
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
50 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04186273
Sponsor's protocol ID
H16-02491
Acronym
FS2
Status last verified
Dec 2019
First submitted
15 Nov 2019
Last updated
17 Dec 2019
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: There is no plan to disseminate individual participant data at this time, beyond what will be accessible through publication.

Publications

  • Papp A, Hartwell R, Evans M, Ghahary A. The Safety and Tolerability of Topically Delivered Kynurenic Acid in Humans. A Phase 1 Randomized Double-Blind Clinical Trial. J Pharm Sci. 2018 Jun;107(6):1572-1576. doi: 10.1016/j.xphs.2018.01.023. Epub 2018 Feb 6.

    PubMed 29421218

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Fibrosis-Inhibiting-Compound-FS2 in people with Scar and Cicatrix, run by University of British Columbia at 1 site in Canada.

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 8 inclusion and 11 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: status not confirmed, as of the sponsor's last update on 17 Dec 2019. 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 Canada. 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. Some participants in this study may receive a placebo. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Anthony Papp, MD, PhD (1.778.362.0161, anthony.papp@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Vancouver Scar Scale (VSS) (time frame: 0-9 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04186273, which also lists 1 linked publication.

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 17 Dec 2019.

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