Study of AMG0001 to Improve Ulcer Healing and Perfusion in Subjects With Peripheral Ischemic Ulcers

A Phase II Double-Blind, Randomized, Placebo-Controlled Study to Assess the Efficacy and Safety of AMG0001 to Improve Ulcer Healing and Perfusion in Subjects Who Have Peripheral Ischemic Ulcers of the Lower Extremity

This study will assess the safety and efficacy of intramuscular injection of AMG0001 (hepatocyte growth factor [HGF] plasmid) to improve ulcer healing and perfusion in patients with peripheral artery disease.

This is a Phase 2, double-blind, randomized, placebo-controlled, parallel group study. Approximately 60 male or female subjects aged 18 years or older with one shallow foot ulcer and mild/moderate ischemia due to peripheral artery disease (PAD) will be randomized in a 1:1:1 ratio to one of 3 treatment groups:

• 4.0 mg AMG0001 intramuscular (IM) (n = 20)
• 8.0 mg AMG0001 IM (n = 20)
• Placebo IM (n = 20)

Inclusion Criteria:

• Documented diagnosis of PAD and mild/moderate foot ischemia (WIFI ischemia grades 1, 2)
• A single measurable ulcer of ≥ 1 cm2 and ≤ 10 cm2 on a lower extremity without evidence of infection or gangrene and no evidence of bone and/or tendon involvement at randomization
• Subjects will undergo protocol-defined standardized wound care during the screening period and through 12 months from the first dose of investigational product
• Subjects who have a diagnosis of diabetes must be considered stable with no changes in diabetic medication regimen anticipated during the study period. Subjects who have a diagnosis of diabetes must have a HbA1c of ≤12% at Screening

Exclusion Criteria:

• Subjects who have excessive tissue necrosis that is unlikely to benefit from medication, or those subjects who, in the opinion of the Investigator, are felt likely to require revascularization within 1 month of screening
• Subjects with severe limb ischemia
• Subjects who are considered likely to require a major amputation (at or above the ankle) within 3 months of screening
• Subjects with deep ulcerations with bone or tendon exposure, or uncontrolled infection, or with the largest ulcer that is >10 cm2 in area
• Subjects with hemodynamically significant aorto-iliac occlusive disease
• Subjects who have had a technically successful revascularization by surgery or angioplasty within 2 months. If subjects are more than two months from revascularization and still meet the inclusion criteria, they may be considered for enrollment. Subjects who have had a technically unsuccessful attempt at revascularization may be enrolled at least one week from the procedure
• Subjects currently receiving immunosuppressive medication, systematically administered steroid therapy, chemotherapy or radiation therapy. Inhaled and topical steroid therapies are allowed