Evaluation of Topical Wound Oxygen (two2) Therapy

A Randomized, Double-blinded, Parallel Group, Placebo-Controlled, Multi-Center Trial of Topical Wound Oxygen Therapy in the Treatment of Diabetic Lower Extremity Ulcers

The purpose of this study is to evaluate the efficacy of the Topical Wound Oxygen (two2) therapy system on the healing of diabetic lower extremity ulcers.

Study Overview

• Status: Terminated
• Conditions: Diabetic Ulcer
• Intervention / Treatment: Device: Topical wound oxygen therapy; Device: Topical wound oxygen Placebo

Detailed Description

The AOTI two2 therapy trial is a randomized, double-blinded, parallel group, placebo-controlled, multi-center study intended to evaluate the efficacy of Topical Wound Oxygen (two2) therapy in relation to placebo when added to standard of care in the treatment of diabetic lower extremity ulcers.

• Study Type: Interventional
• Enrollment (Actual): 21
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Canada
  • Ontario
    • Mississauga, Ontario, Canada, L4Y 1A6
      • Community Dermatology & Wound Healing Clinic
    • St. Catherines, Ontario, Canada, L2R2P7
      • Wound Care Clinic
• United States
  • New York
    • Buffalo, New York, United States, 14214
      • AOTI Clinic

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Subject or legal representative has read, understands, and has signed the Institutional Review Board (IRB)-approved Informed COnsent Form (ICF) prior to enrollment in the study;
• Subject is 18 years of age or older;
• Subject has a current diagnosis of Type I or Type II diabetes mellitus;
• Subject has a diabetic lower extremity ulcer;
• Subject's index ulcer is at least 1.0cm2 in area;
• Subject's index ulcer is a superficial, partial or full thickness skin ulcer (Wagner Classification System I, II or III) which has been present for at least 4 weeks at the time of initial screening that has not improved with standard of care;
• Subject's index ulcer appears to be free of sinus tracts and tunneling;
• Subject's index ulcer exhibits no signs of moderate or severe clinical infection;
• In the event of multiple wounds on the same foot, the index ulcer will be the largest ulcer meeting the other inclusion criteria;
• In the event of multiple wounds on the same foor, the index ulcer is at least 2 cm from any additional wound edge;
• Women of childbearing potential must not be pregnant or lactating;
• Subject and/or caregiver are willing and able to comply with all specified care and visit requirements, and subject has a reasonable expectation of completing the study;
• Subject must be fit to undertake the study trial in the opinion of the referring doctor
• Subject's Great Toe pressure is greater than 20mmHg.

Exclusion Criteria:

• Subject is currently enrolled in another investigational device or drug trial, or has been previously enrolled in investigative research for a device or pharmaceutical agent within the last 30 days;
• Subject's index ulcer has gangrene or gangrene is located on any part of the foot with the index ulcer;
• Subject has an acute and/or active Deep Vein Thrombosis;
• Subject is currently receiving or has received in the last six (6) months radiation or chemotherapy;
• Subject has received growth factor therapy within seven (7) days prior to initial screening;
• Subject has a significant medical condition that would impair wound healing, for example: severe liver disease, aplastic anemia, scleroderma, malnutrition, malignancy, etc;
• Subject has known or suspected osteomyelitis;
• Other than debridement, the underlying wound pathology requires surgical correction for the index ulcer to heal;
• Subject is receiving or has received corticosteroids (all applications), immunosuppressive agents, or other drugs that would impair wound healing within seven (7) days prior to initial screening or is anticipated to require them during the course of the study;
• Subject has an acute or active Charcot foot per clinical and radiology results or significant bony prominences that would preclude adequate off-loading with the standard off-loading device. The presence of Charcot foot in itself does not exclude the subject;
• Subject has known HIV, hepatitis, active cancer (except basal cell and non-melanoma skin cancer), or a bleeding disorder;
• Subject is undergoing renal dialysis;
• Subject suffers from known alcohol or drug abuse;
• Use of the standard off-loading device is contra-indicated or cannot be appropriately fitted to the subject.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: QUADRUPLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
ACTIVE_COMPARATOR: Topical Wound Oxygen Therapy; Subjects will receive four 90 minute treatments of two2 therapy per week	Device: Topical wound oxygen therapy; 90 minutes 4 days per week Active Topical Oxygen Therapy
PLACEBO_COMPARATOR: Placebo Therapy; Subjects will receive four 90 minute treatments of Placebo two2 therapy per week	Device: Topical wound oxygen Placebo; 90 mins per day 4 days per week Placebo Therapy

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Wound closure	12 Weeks

Secondary Outcome Measures

Outcome Measure	Time Frame
The time to wound closure	Variable
The degree of wound closure	4, 8, and 12 weeks
The percentage of tissue types	4, 8 and 12 weeks
The type and amount of wound drainage or exudates	4, 8 and 12 weeks
The level of wound pain	4, 8 and 12 weeks

Collaborators and Investigators

• Sponsor: AOTI Ltd.
• Investigators: Principal Investigator: Laura E Edsberg, Ph.D., Daamen College

Study record dates

Study Major Dates

• Study Start: May 1, 2007
• Primary Completion (ACTUAL): December 1, 2009
• Study Completion (ACTUAL): December 1, 2009

Study Registration Dates

• First Submitted: March 26, 2009
• First Submitted That Met QC Criteria: March 27, 2009
• First Posted (ESTIMATE): March 30, 2009

Study Record Updates

• Last Update Posted (ESTIMATE): January 10, 2014
• Last Update Submitted That Met QC Criteria: January 8, 2014
• Last Verified: January 1, 2014

More Information

Terms related to this study

• Keywords: diabetes; oxygen; lower extremity; wound; ulcer; foot; hyperbaric; diabetic; topical wound oxygen
• Additional Relevant MeSH Terms: Pathologic Processes; Ulcer
• Other Study ID Numbers: AOTI-001