SDF1 Plasmid Treatment for Patients With Peripheral Artery Disease (STOP-PAD)

This is an interventional treatment trial for Peripheral Arterial Disease Read More

Major Inclusion Criteria:

• Age ≥18
• Currently receiving standard of care wound treatment (>2 weeks) for chronic wounds or gangrene including as indicated: debridement, pressure offloading, infection control, and/or maintenance of a moist wound environment.
• Diagnosis of advanced PAD with tissue loss (ulceration and/or dry gangrene) on the foot of the index leg with an ulcer size of at least 0.5 cm2 and <25 cm2. Index wounds on the heel must be <10 cm2 that cannot be probed to bone, have exposed bone or osteomyelitis.

• Post revascularization intervention inclusion criteria include an attempt at open bypass grafting or endovascular intervention of a popliteal/infrapopliteal lesion(s) on the same leg that has tissue loss without significant improvement in TBI post intervention. The following will be accepted as demonstrating a lack of post intervention toe brachial index (TBI) improvement:

  • TBI ≤ 0.51or;
  • Toe pressure ≤50 mmHg with flat or dampened wave forms or;
  • Skin Perfusion pressure ≤40 mmHg at mid foot level or;
  • TcPO2 ≤40 mmHg
• Subjects willing to forgo treatment with hyperbaric oxygen, nerve stimulation or sympathectomy for the treatment of advanced PAD from time of consent to 6 months following the initial injection of study drug

Major Exclusion Criteria:

• Previous major amputation of the leg to be treated or planned major amputation or transmetatarsal amputation within the first month following enrollment.
• Only a short segment superficial femoral artery lesion - consistent with Inter-Society Consensus for the Management of Peripheral Arterial Disease (TASC II) A or B category, and no infrapopliteal disease
• Staged or planned intervention in the index leg within 30 days after the index procedure
• Acute limb-threatening ischemia, trauma, known non-atherosclerotic vascular disease
• Non-salvageable limb defined as major tissue loss and an unsalvageable foot;
• Wounds that have decreased in size by >50% between the Screening visit and Day 0.
• If patient has active infection of the index limb that is being treated, and, in the opinion of treating physician, will not lead to an amputation within the next 3 months, the patient can be enrolled.
• Inability to safely perform a revascularization procedure due to uncontrolled diabetes or other medical condition.
• Presence of any other condition that, in the opinion of the investigator, might compromise any aspect of the trial