SkinTE® in the Treatment of Venous Leg Wounds

A Multi-center, Randomized Controlled Clinical Trial Evaluating the Effects of SkinTE® in the Treatment of Venous Leg Ulcers

This study is a prospective, multi-center, randomized controlled trial designed to collect patient outcome data on a commercially available human autologous homologous skin construct with SOC dressing compared to SOC dressings alone in the treatment of Venous Leg Wounds

Study Overview

• Status: Completed
• Conditions: Venous Leg Ulcer; Venous Stasis; Venous Stasis Ulcer
• Intervention / Treatment: Other: Fibracol Wound Dressing; Other: Human Autologous Homologous Skin Construct; Other: Additional Outer Dressing Application

Detailed Description

This study is a prospective, multi-center, Randomized Controlled Trial (RCT) designed to collect patient outcome data on a commercially available human autologous homologous skin construct (SkinTE) with SOC dressing compared to SOC dressings alone in the treatment of Venous Leg Wounds (VLU). The trial will be single blinded in regard to wound healing assessment (another clinician, other than the investigator at each site will assess wound healing) and confirmation of wound healing will be overseen by an independent adjudication committee made up of wound care experts. The study will last twelve weeks, with a two week screening period prior to enrollment.

There are two arms in the study:

Arm 1: The Experimental Arm , that will include SOC Therapy. SOC therapy in this study is appropriate sharp or surgical debridement, infection management (systemic antibiotics only in conjunction with debridement) and the experimental wound care covering with human autologous,homologous skin construct (SkinTE) followed by a moisture retention dressing and a padded 3-layer dressing comprised of 4x4 gauze pads, soft roll and compression wrap (DynaflexTM or equivalent).

Arm 2: The Standard of Care Arm. The SOC therapy in this study is appropriate sharp or surgical debridement, infection management (systemic antibiotics only in conjunction with debridement) and wound care covering with calcium alginate Fibracol dressing followed by a moisture retentive dressing and a padded 3-layer dressing comprised of 4x4 gauze pads, soft roll and compressive wrap (DynaflexTM or equivalent).

• Study Type: Interventional
• Enrollment (Actual): 29
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Virginia
    • Martinsville, Virginia, United States, 23116
      • Martinsville Research Institute
    • Roanoke, Virginia, United States, 24016
      • Professional Education and Research Institute

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• At least 18 years old.
• Presence of a VLU on the leg, below the knee but above the aspect of the medial malleolus, extending at least through the dermis or subcutaneous tissue but not involving tendon, muscle, or bone.
• The index ulcer will be the largest ulcer if two or more VLUs are present and will be the only one evaluated in the study. If other ulcerations are present on the same foot, they must be more than 2 cm distant from the index ulcer.
• Index ulcer (i.e. current episode of ulceration) has been present for greater than four weeks prior to the initial screening visit, as of the date subject consents for study.
• Index ulcer is a minimum of 2.0 cm2 and a maximum of 20 cm2 at first screening visit (SV1) and first treatment visit (TV1).
• Adequate circulation to the affected extremity as documented by a dorsal transcutaneous oxygen measurement (TCOM) or a skin perfusion pressure (SPP) measurement of ≥ 30 mmHg, or an Ankle Branchial Index (ABI) between ≥ 0.7 and ≤ 1.2 or Arterial Doppler with a minimum of biphasic flow within 3 months of SV1, using the affected study extremity.
• The index ulcer has been treated with high compression for at least 14 days prior to randomization (30-40 mm Hg).
• Females of childbearing potential must be willing to use acceptable methods of contraception (birth control pills, barriers or abstinence) during the course of the study and undergo pregnancy tests.
• Subject understands and is willing to participate in the clinical study and can comply with weekly visits and follow-up regimen.
• Subject has read and signed the IRB/IEC approved Informed Consent Form before screening procedures have been completed.
• The index ulcer has a clean granular base, is free of necrotic debris, and appears to be healthy vascularized tissue at time of placement of treatment product.
• Subject is deemed healthy and stable for treatment based per PI discretion.

Exclusion Criteria:

• Subjects with a BMI ≥45
• Index ulcer(s) deemed by the investigator to be caused by a medical condition other than venous insufficiency.
• Known allergy to the components of the multi-layer compression bandaging, or who cannot tolerate multi-layer compression therapy.
• Index ulcer, in the opinion of the investigator, is suspicious for cancer and should undergo an ulcer biopsy to rule out a carcinoma of the ulcer.
• Subjects on any investigational drug(s) or therapeutic device(s) within 30 days preceding the first Screening Visit (SV1).
• History of radiation at the ulcer site (regardless of time since last radiation treatment).
• Index ulcer has been previously treated or will need to be treated with any prohibited therapies, such as chlorhexidine or collagenase. (See Section 7.3 of this protocol for a list of prohibited medications and therapies).
• Subjects with a history of more than two weeks treatment with immunosuppressants (including systemic corticosteroids > 10mg daily dose), cytotoxic chemotherapy, or application of topical steroids to the ulcer surface within one month prior to first Screening visit, or who receive such medications during the screening period, or who are anticipated to require such medications during the study.
• Study ulcer requiring negative pressure wound therapy during the course of the trial.
• Ulcers on the dorsum of the foot or with more than 50% of the ulcer below the malleolus are excluded.
• Presence of any condition(s) which seriously compromises the subject's ability to complete this study or has a known history of poor adherence with medical treatment.
• Subject is pregnant or breast-feeding.
• Presence of diabetes with poor metabolic control as documented with an HbA1c ≥12.0 within 30 days of randomization.
• Subjects with end stage renal disease as evidenced by a creatinine greater than 3.0mg/dl within 120 days of randomization.
• Target wound has presence of local active soft tissue infection involving the treatment site.
• Index ulcer has reduced in area by 30% or more after 14 days of SOC from SV1 to the TV1/randomization visit.
• In the opinion of the Investigator, evidence of unstable human immunodeficiency virus (HIV), hepatitis B or hepatitis C at screening.
• Vascular surgery; arterial or venous to the affected extremity within 30 days of screening

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Human Autologous Homologous Skin Construct (SkinTE); SkinTE, is an autologous, homologous, FDA-registered, cutaneous human cellular and tissue-based product (HCT/P) that can be used an adjunct to standard of care, for skin coverage in patients who have suffered from a venous leg wound in conjunction with standard wound care and Additional (outer) Dressing Application with moisture retention dressing and compression	Other: Human Autologous Homologous Skin Construct; Application of a autologous human derived skin polar units; Other Names: SkinTE; Other: Additional Outer Dressing Application; Application of Moisture retentive dressing, and a multi-layer compression dressing; Other Names: •Outer protective and compressive dressing
Active Comparator: Fibracol Wound Dressing; A commercially available wound dressing to be used per manufacturer's instructions for use on venous leg wounds in conjunction with standard wound care and Additional (outer) Dressing Application with moisture retention dressing moisture retention dressing and compression	Other: Fibracol Wound Dressing; Application of Collagen Alginate Dressing; Other Names: Collegen Alginate; Other: Additional Outer Dressing Application; Application of Moisture retentive dressing, and a multi-layer compression dressing; Other Names: •Outer protective and compressive dressing

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of index ulcers healed at 12 weeks	examine percent of ulcers healed at week twelve	12 weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage area reduction at 4 weeks	examine percent of wound reduction at 4 weeks	4 weeks
Percentage area reduction at 6 weeks	examine percent of wound reduction at 6 weeks	6 weeks
Improvement in quality of life using Wound Quality of Life Score	The Wound-QoL, or wound quality of life questionnaire, measures the disease-specific, health-related quality of life of patients with chronic wounds. It consists of 17 items on impairments which are always assessed in retrospect to the preceding seven days. This questionnaire will be given to clinical trial participants at each visit, with the scale scores recorded. Each question is scored. Answers to each item are coded with numbers (0='not at all' to 4='very much'). As noted above the score will be reported with a minimam score of "0" and a maximum score of 68	12 weeks
Change in pain levels during trial, using the FACES pain scales which measure pain on a range of 0-10, zero being no pain and 10 being the most severe pain	The FACES pain scale will be administered to the clinical trial participants at each visit. The trial participant will select their pain level with a series of faces that correspond to a number between 0 which implies no pain , up to 10 which implies the most severe pain. The scores will be recorded for each clinical trial participant on each visit	12 weeks
Percentage area reduction at 8 weeks	examine percent of wound reduction at 8 weeks	8 weeks
Percentage are reduction at 12 weeks	examine percent of wound reduction at 12 weeks	12 weeks

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Visible Graft Take at each visit	Examine the take or the bodies ability to accept the Skin TE	12 weeks

Collaborators and Investigators

• Sponsor: PolarityTE
• Collaborators: Professional Education and Research Institute
• Investigators: Principal Investigator: David Armstrong, DPM, MD, PhD, USC/ Salsa

Study record dates

Study Major Dates

• Study Start (Actual): March 29, 2019
• Primary Completion (Actual): March 23, 2021
• Study Completion (Actual): March 23, 2021

Study Registration Dates

• First Submitted: March 17, 2019
• First Submitted That Met QC Criteria: March 17, 2019
• First Posted (Actual): March 19, 2019

Study Record Updates

• Last Update Posted (Actual): April 4, 2022
• Last Update Submitted That Met QC Criteria: March 22, 2022
• Last Verified: March 1, 2022

More Information

Terms related to this study

• Keywords: Ulcer; SkinTE; VLU
• Additional Relevant MeSH Terms: Pathologic Processes; Cardiovascular Diseases; Vascular Diseases; Skin Diseases; Skin Ulcer; Varicose Veins; Ulcer; Leg Ulcer; Varicose Ulcer
• Other Study ID Numbers: STE-VLU-01

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No