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Gene Therapy to Improve Wound Healing in Patients With Diabetes

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00065663
Recruitment Status : Completed
First Posted : July 31, 2003
Last Update Posted : November 20, 2007
Information provided by:
Tissue Repair Company

Tracking Information
First Submitted Date  ICMJE July 30, 2003
First Posted Date  ICMJE July 31, 2003
Last Update Posted Date November 20, 2007
Study Start Date  ICMJE August 2002
Primary Completion Date Not Provided
Current Primary Outcome Measures  ICMJE Not Provided
Original Primary Outcome Measures  ICMJE Not Provided
Change History
Current Secondary Outcome Measures  ICMJE Not Provided
Original Secondary Outcome Measures  ICMJE Not Provided
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title  ICMJE Gene Therapy to Improve Wound Healing in Patients With Diabetes
Official Title  ICMJE Growth Factor Gene Therapy for Wound Healing
Brief Summary Patients with diabetes may develop chronic wounds that respond poorly to treatment. Gene therapy with the platelet-derived growth factor-B gene has been shown to help with the healing of chronic wounds. This study will evaluate a new way to deliver the gene to the wound tissue.
Detailed Description

Chronic wounds, such as diabetic ulcers, pressure ulcers, and venous stasis ulcers, cause significant morbidity in millions of patients each year in the United States. Individuals with long-standing diabetes develop both peripheral vascular disease and peripheral neuropathy. These patients may not feel pressure from shoes or objects which can damage their skin. Once a wound is formed, it may heal very slowly or not at all due to diabetic complications.

Platelet-derived growth factor-B (PDGF-B) has been approved for use in diabetic ulcers. However, delivery and maintenance of the drug at the wound site in sufficient quantities for a sufficient period of time is a major hurdle to widespread use.

Gene activated matrix (GAM) technology offers the opportunity to place a therapeutic gene contained within a structural matrix into a wound site. This study will evaluate the safety and potential clinical utility of topical applications of GAM501, a gene for PDGF-B contained within an E1-deleted adenoviral vector and formulated in a bovine type I collagen gel. This formulation allows for the migration of wound repair cells into the structural matrix, where they encounter the viral vector and subsequently produce the therapeutic protein within the local wound environment.

Participants in this study will receive up to four treatments with GAM501. Participants will be followed by multiple observations over a 6 to 7 month period.

Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 1
Study Design  ICMJE Allocation: Non-Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE
  • Wounds and Injuries
  • Diabetes
  • Diabetic Foot Ulcers
  • Foot Wounds
Intervention  ICMJE Genetic: GAM501
Study Arms  ICMJE Not Provided
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status  ICMJE Completed
Enrollment  ICMJE
 (submitted: June¬†23,¬†2005)
Original Enrollment  ICMJE Same as current
Study Completion Date  ICMJE December 2004
Primary Completion Date Not Provided
Eligibility Criteria  ICMJE

Inclusion Criteria

  • Adequately controlled diabetes mellitus (type I or II) as defined by HbA1c < 10.0%
  • Cutaneous, lower extremity, plantar medial or lateral surface ulcer between 1 and 10 cm2 post-debridement
  • Ulcer present for > 6 weeks prior to study entry
  • Ulcer free of all necrotic and infected soft tissue
  • Affected limb transcutaneous oxygen pressure (TcpO2) > 30 mmHg at screening or a palpable dorsal pedal or posterior tibial pulse
  • Inability to perceive 10 grams pressure using a Semmes-Weinstein 5.07 monofilament in the peri-ulcer area
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United States
Removed Location Countries  
Administrative Information
NCT Number  ICMJE NCT00065663
Other Study ID Numbers  ICMJE NIAMS-093
R44AR046154 ( U.S. NIH Grant/Contract )
Has Data Monitoring Committee Not Provided
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party Not Provided
Study Sponsor  ICMJE Tissue Repair Company
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Study Director: Barbara Sosnowski, PhD Tissue Repair Company
PRS Account Tissue Repair Company
Verification Date November 2007

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP