Safety and Efficacy Study of DSC127 in Treating Subjects With Diabetic Ulcers

NCT ID: NCT00796744

Last Updated: 2012-09-27

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

78 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-10-31

Study Completion Date

2011-05-31

Brief Summary

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The purpose of this study is to assess if the experimental drug, DSC127, is safe, how well it can be tolerated, and how different doses effect the healing of the chronic foot ulcers in diabetic subjects.

Detailed Description

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This study is designed as a randomized, parallel-group, double-blind, placebo-controlled trial. After a 14-day baseline to evaluate ulcer healing to ensure DU are chronic, a 4-week active treatment followed by 8 weeks of observation and assessment of the treatment will compare the effects of two concentrations of DSC127 and placebo (n = 25 evaluable subjects per group; n=75 total evaluable subjects) to identify the optimal dose of DSC127. Sustained tissue integrity will be evaluated for all subjects during a follow-up period at study weeks 16 and 24.

Subjects will be randomized in a 1:1:1 ratio to one of the three treatment groups.

Group 1: Placebo Vehicle Control Group 2: 0.03% DSC127 in Vehicle Group 3: 0.01% DSC127 in Vehicle

The four week treatment period requires daily application of the treatment to the wound site. First application each week will be at the clinic and for the remainder of the week the patient self-administers the treatment.

If wound healing occurs during the treatment or assessment periods a final assessment visit is conducted and the integrity is assessed four and twelve weeks later (usually weeks 16 and 24 of the study).

Conditions

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Foot Ulcer, Diabetic Diabetic Foot

Keywords

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Diabetes mellitus Diabetic neuropathy Peripheral vascular disease Infection Topical application plantar foot ulcers

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Placebo Vehicle Control

control placebo vehicle gel

Group Type PLACEBO_COMPARATOR

NorLeu3-A(1-7) in a gel formulation

Intervention Type DRUG

Gel will be applied to the wound once daily for four weeks (treatment period). Gel will have either no active ingredient (placebo), 0.03% or 0.01% active ingredient.

0.03% DSC127

0.03 % DSC127 in Vehicle Control

Group Type ACTIVE_COMPARATOR

NorLeu3-A(1-7) in a gel formulation

Intervention Type DRUG

Gel will be applied to the wound once daily for four weeks (treatment period). Gel will have either no active ingredient (placebo), 0.03% or 0.01% active ingredient.

0.01% DSC127

0.01% DSC127 in Vehicle Control

Group Type ACTIVE_COMPARATOR

NorLeu3-A(1-7) in a gel formulation

Intervention Type DRUG

Gel will be applied to the wound once daily for four weeks (treatment period). Gel will have either no active ingredient (placebo), 0.03% or 0.01% active ingredient.

Interventions

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NorLeu3-A(1-7) in a gel formulation

Gel will be applied to the wound once daily for four weeks (treatment period). Gel will have either no active ingredient (placebo), 0.03% or 0.01% active ingredient.

Intervention Type DRUG

Other Intervention Names

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NorLeu3-Angiotensin(1-7) DSC127

Eligibility Criteria

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Inclusion Criteria

* Have at least one chronic non-healing Wagner Grade 1 or Grade 2 plantar neuropathic diabetic ulcer between 1.0-6.0 cm2 on the midfoot or forefoot, including the toes but excluding the heel.
* ABI greater than 0.7 for neuroischemic or greater than 0.8 for neuropathic DU
* TcPO2 greater than 40 mm Hg or great toe systolic pressure greater than 50 mmHg
* Type I or Type II diabetes under metabolic control
* Female subjects must have a negative pregnancy test and be willing to use acceptable method of birth control for the duration of the study

Exclusion Criteria

* Exposure to any investigational product within the last 30 days, or have known hypersensitivity to any of the study medication components
* Chronic renal insufficiency and/or chronic liver dysfunction
* Resting blood pressure (at the time of the initial visit of the Screening Period) which exceeds 160 systolic and/or 90 diastolic mmHg on 3 consecutive readings at least 15 minutes apart
* Malignancy of any kind
* Receiving hemodialysis or CAPD
* Current history of drug abuse, and/or known to be HIV positive
* Prior radiation therapy of the foot under study
* Current use of corticosteroids (within past 8 weeks), immunosuppressants (within past 8 weeks), or use of a biologic agent to include growth factors and skin equivalents (Regranex, Apligraft, or Dermagraft) in the past 90 days
* Ulcer is deemed clinically infected and requires topical antimicrobials or agents known to affect wound healing, or the subject has been taking systemic antibiotics for more than 7 days for any reason
* Sickle-cell anemia, Raynaud's or other peripheral vascular disease
* Wagner Grade 3 or higher DU, deep abscess or infection of the joint or tendon, or gangrene or osteomyelitis
* An EKG with a marked baseline prolongation of QT/QTc interval
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institutes of Health (NIH)

NIH

Sponsor Role collaborator

Integra LifeSciences Corporation

INDUSTRY

Sponsor Role collaborator

US Biotest, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Gere diZerega, MD

Role: STUDY_DIRECTOR

US Biotest, Inc.

Locations

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Southern Arizona VA Health Care System

Tucson, Arizona, United States

Site Status

Southern Arizona Limb Salvage Alliance (SALSA)

Tucson, Arizona, United States

Site Status

Bay Area Footcare

Castro Valley, California, United States

Site Status

University of California, San Diego

San Diego, California, United States

Site Status

Olive View - UCLA Medical Center

Sylmar, California, United States

Site Status

Passavant Area Hospital

Jacksonville, Illinois, United States

Site Status

Georgetown University Medical Center

Georgetown, Maryland, United States

Site Status

Boston University School of Medicine

Boston, Massachusetts, United States

Site Status

Eastern Carolina Foot & Ankle Specialists

Greenville, North Carolina, United States

Site Status

Warren General Hospital Wound Clinic

Warren, Pennsylvania, United States

Site Status

Renaissance Hospital Dallas

Dallas, Texas, United States

Site Status

Professional Education and Research Institute

Roanoke, Virginia, United States

Site Status

Countries

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United States

References

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Rodgers KE, Ellefson DD, Espinoza T, Roda N, Maldonado S, Dizerega GS. Effect of NorLeu3-A(1-7) on scar formation over time after full-thickness incision injury in the rat. Wound Repair Regen. 2005 May-Jun;13(3):309-17. doi: 10.1111/j.1067-1927.2005.130314.x.

Reference Type BACKGROUND
PMID: 15953051 (View on PubMed)

Rodgers KE, Espinoza T, Felix J, Roda N, Maldonado S, diZerega G. Acceleration of healing, reduction of fibrotic scar, and normalization of tissue architecture by an angiotensin analogue, NorLeu3-A(1-7). Plast Reconstr Surg. 2003 Mar;111(3):1195-206. doi: 10.1097/01.PRS.0000047403.23105.66.

Reference Type BACKGROUND
PMID: 12621191 (View on PubMed)

Rodgers K, Xiong S, Felix J, Roda N, Espinoza T, Maldonado S, Dizerega G. Development of angiotensin (1-7) as an agent to accelerate dermal repair. Wound Repair Regen. 2001 May-Jun;9(3):238-47. doi: 10.1046/j.1524-475x.2001.00238.x.

Reference Type BACKGROUND
PMID: 11472620 (View on PubMed)

Rodgers KE, Roda N, Felix JE, Espinoza T, Maldonado S, diZerega G. Histological evaluation of the effects of angiotensin peptides on wound repair in diabetic mice. Exp Dermatol. 2003 Dec;12(6):784-90. doi: 10.1111/j.0906-6705.2003.00087.x.

Reference Type BACKGROUND
PMID: 14714558 (View on PubMed)

Balingit PP, Armstrong DG, Reyzelman AM, Bolton L, Verco SJ, Rodgers KE, Nigh KA, diZerega GS. NorLeu3-A(1-7) stimulation of diabetic foot ulcer healing: results of a randomized, parallel-group, double-blind, placebo-controlled phase 2 clinical trial. Wound Repair Regen. 2012 Jul-Aug;20(4):482-90. doi: 10.1111/j.1524-475X.2012.00804.x. Epub 2012 Jun 7.

Reference Type RESULT
PMID: 22672145 (View on PubMed)

Other Identifiers

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DSC127-2008-01

Identifier Type: -

Identifier Source: org_study_id