A Randomized, Prospective, Double-blind, Vehicle-controlled, Dose-ranging, Multi-center Study to Assess the Safety and Clinical Effect of Nexagon® in the Treatment of Subjects With a Diabetic Foot Ulcer
Overview
- Phase
- Phase 2
- Intervention
- Nexagon® High Dose
- Conditions
- Diabetic Foot Ulcers
- Sponsor
- OcuNexus Therapeutics, Inc.
- Enrollment
- 168
- Locations
- 25
- Primary Endpoint
- Incidence of Reference Diabetic Foot Ulcer (RDFU) complete closure determined by Investigator Assessment
- Status
- Completed
- Last Updated
- 12 years ago
Overview
Brief Summary
This study is for Type I or Type II diabetic subjects with with a diabetic foot ulcer. The study is being done to determine if Nexagon® plus standard of care is more effective than placebo plus standard of care. Standard of care will include debridement of the ulcer, standardized dressings and standardized off-loading using a Removable Cast Walker.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Diagnosis of diabetes mellitus (Type I or II)
- •HbA1c of less than or equal to 12.0%
- •Diagnosis of neuropathic foot ulcer with partial or complete neuropathy
- •Cutaneous ulcer on the plantar or dorsal aspect of the foot or toe that is greater or equal to 1.0cm2 and less than or equal to 8.0 cm2 in area at the end of the screening period and is full thickness with no exposed ligament, tendon, joint capsule or bone. Surface area will be measured by digital planimetry.
- •The Medical Monitor(or delegate)must confirm that the reference diabetic foot ulcer (RDFU)is suitable for inclusion after reviewing digital photographs
- •Wound bed consisting of completely viable tissue or one where completely viable tissue will be achieved by the end of the screening period.
- •An Ankle Branchial Index (ABI) of greater or equal to 0.80 in concert with a bi- or tri-phasic Doppler flow pattern; or adequate circulation as demonstrated by any of the following methods: peri-wound transcutaneous partial pressure oxygen (TcpO2)greater or equal to 40 mmHg; or a toe pressure of greater or equal to 40 mmHg; or skin perfusion pressure of greater or equal to 40 mmHg.
- •Ulcer present for 4 weeks or more or less than or equal to 12 months.
- •Willing to wear a Removable Cast Walker (RCW) between study visits for the duration of the study.
- •Signed informed consent form.
Exclusion Criteria
- •Any unstable medical condition that would cause the study to be detrimental to the subject.
- •Decrease in RDFU size by more than 40% or increase in the ulcer size by more than 40% during the 14-day screening period as measured by digital planimetry.
- •Ulcers caused primarily by untreated vascular insufficiency or ulcers with an etiology not related to diabetes.
- •Ulcers above the ankle.
- •Ulcers that cannot be effectively off-loaded using the cast walker and sole insert provided in this study (ulcers not located on the weight bearing surface of the foot do not require off-loading).
- •Ulcers on the toes not accessible for photography (e.g. in the web space).
- •Presence of other ulcers within 2cm of the perimeter of the RDFU.
- •Cannot tolerate or will not comply with the off-loading method, or non-compliance with standard or care.
- •10.The RDFU is infected (clinical assessment of infection)and/or biopsy proof of greater than 100,000 organisms per gram of tissue during the screening period.
- •Subjects presenting with the clinical characteristics of cellulitis at the ulcer site.
Arms & Interventions
Nexagon® High Dose
Twice weekly applications of Nexagon® high dose in addition to off-loading using a Removable Cast Walker
Intervention: Nexagon® High Dose
Nexagon® Low Dose
Twice weekly applications of Nexagon® low dose in addition to off-loading using a Removable Cast Walker
Intervention: Nexagon® Low Dose
Nexagon® Medium Dose
Twice weekly applications of Nexagon® medium dose in addition to off-loading using a Removable Cast Walker
Intervention: Nexagon® Medium Dose
Nexagon® vehicle
Twice weekly applications of Nexagon® vehicle in addition to off-loading using a Removable Cast Walker
Intervention: Nexagon® vehicle
Outcomes
Primary Outcomes
Incidence of Reference Diabetic Foot Ulcer (RDFU) complete closure determined by Investigator Assessment
Time Frame: Within 12 weeks
Secondary Outcomes
- Percentage change in RDFU surface area(Within 12 weeks)
- Time to RDFU complete closure(Within 12 weeks)
- Percentage of granulation tissue in RDFU(12 weeks)
- Incidence of ulcer recurrence(12 weeks post-closure)
- Incidence of adverse events(12 weeks)