A Randomized, Controlled Clinical Trial Evaluating the Efficacy of Type-I Collagen-based Skin Substitute vs. Dehydrated Human Amnion/Chorion Membrane in the Treatment of Venous Leg Ulcers
Venous leg ulcers are chronic wounds caused by venous insufficiency, leading to significant morbidity. The purpose of this randomized, controlled study is to evaluate the safety and efficacy of the application of Type-I Collagen-based Skin Substitute (HPTC) vs. Dehydrated Human Amnion/Chorion Membrane (dHCAM) in the treatment of VLUs and to compare their efficacy.
• Subjects must be at least 18 years of age or older.
• Subjects must have a diagnosis of a venous leg ulcer (confirmed by clinical and duplex ultrasound evaluation).
• At enrolment subjects must have a target VLU with a minimum surface area of 2.0 cm2 and a maximum surface area of 25.0 cm2 measured post debridement using a ruler to measure wound area.
• The target ulcer must have been present for a minimum of 4 weeks and a maximum of 52 weeks of standard of care prior to the initial screening visit.
• The target ulcer must be located on the foot, ankle and lower leg region.
• The target ulcer must be full thickness on the foot or ankle that does not probe to bone.
• Adequate circulation to the affected foot as documented by any of the following methods performed within 3 months of the first screening visit:
⁃ i. TCOM ≥30 mmHg ii. ABI between 0.7 and 1.3 iii. PVR: Biphasic iv. TBI ˃0.6 v. As an alternative arterial, Doppler ultrasound can be performed evaluating for biphasic dorsalis pedis and posterior tibial vessels at the level of the ankle of the target extremity.
⁃ h. If the subject has two or more ulcers, they must be separated by at least 2 cm. The largest ulcer satisfying the inclusion and exclusion criteria will be designated as the target ulcer.
⁃ i. The subject must consent to using the prescribed off-loading method for the duration of the study.
⁃ j. The subject must agree to attend the twice-weekly/weekly study visits required by the protocol.
⁃ k. The subject must be willing and able to participate in the informed consent process.
⁃ l. Patients must have read and signed the IRB approved ICF before screening procedures are undertaken.