Clinical trial NCT00300040: Safety/Feasibility Study of HBOC-201 in Amputation at/Below Knee From Critical Lower Limb Ischemia
Official title: Phase II, Multi-Center,Single-Blind,Placebo-Controlled Study,Evaluating Safety & Feasibility of HBOC-201 (Wound Healing Patients With Peripheral Vascular Disease & Undergoing Lower Limb Amputation Due to Critical Lower Limb Ischemia
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: PHASE2
Conditions: Peripheral Vascular Disease
Keywords: Amputation
Lower limb
Critical Limb Ischemia
residual limb
Peripheral Vascular Disease
re-amputation
Lower Limb Ischemia
PVD
Lead sponsor: Biopure Corporation
Sponsor class: INDUSTRY
First posted: 2006-03-08
Enrollment: 16
Sex: ALL
Minimum age (years): 18
Maximum age (years): 75
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The purpose of this study is to assess the safety and feasibility of HBOC-201 in increasing adequate wound healing in patients with severe peripheral vascular disease who are undergoing lower limb amputation.

The hypothesis is that HBOC-201 will pass through the partially occluded lesions in the peripheral arteries in the lower extremity and promote the wound healing process by delivering oxygen to the oxygen deprived tissues. This will reduce the incidence of lower limb wound complications at 60 days post-surgery and may reduce the incidence of a second amputation.

Detailed description: This is a Phase II, single-blinded, prospectively randomized, parallel-group, placebo controlled study that will evaluate the safety and feasibility of HBOC-201 when administered therapeutically to patients with a peripheral vascular occlusive disorder and who are undergoing lower limb amputation due to critical lower limb ischemia. Subjects will be randomized (1:1) to receive either HBOC-201 or a colloid control (HAES-steril® 6%).

Eligibility criteria: Inclusion Criteria:

* Subjects ≥ 18 ≤ 75 years of age
* Scheduled amputation at or above ankle joint, or a more proximal location but below or through the knee joint
* Documented severe lower extremity peripheral artery occlusive disease confirmed by clinical symptoms of critical limb ischemia and:

  * Frankly gangrenous tissue that merits amputation or
  * Angiographic evidence of occlusive peripheral artery disease within one month of screening
* Participant or legal representative signs informed consent
* Willingness to follow study instructions and follow-up visits

Exclusion Criteria:

* No informed consent is obtained
* If medically inappropriate to administer 250 mL colloidal solution daily for 4 consecutive days
* Uncontrolled hypertension (BP \> 160/90 mm Hg) despite 2 antihypertensive meds or BP \> 180/100 mm Hg if untreated
* Severe liver dysfunction defined by Total Bilirubin \> 3 mg/dL or twice the normal limit of serum AST or ALT
* Symptomatic CVD diagnosed w/ in last 6 months or known high grade carotid stenosis
* Any severe or unstable medical condition that might interfere w/ the evaluation of study medication
* Cardiogenic shock (cardiac index \< 2 L/min/m2, PCWP \> 18 mm Hg)
* Amputation above knee joint or below ankle joint
* Any amputation whereby primary skin closure not technically feasible
* Candidate for percutaneous or surgical revascularization
* Cardiac failure defined by a NY class III/IV or left ventricular ejection fraction \< 30%
* Life expectancy \< 60 days
* Systemic mastocytosis
* Previously demonstrated beef product allergy
* Myocardial infarction w/ in 30 days
* Participation in another trial w/ in last 30 days
* Woman who is pregnant or breastfeeding
* Amputation with known infection at site of skin closure
* Renal dysfunction requiring dialysis, or serum creatinine level 2.5 mg/dL
* Peripheral vascular occlusion from cardio arterial emboli
* Uncontrolled diabetes blood glucose ≥ 400 mg/dL

Primary outcomes:
measure: Mortality at 60 days post amputation procedure
timeFrame: 60(±7 days) post-procedure follow-up visit
Secondary outcomes:
measure: 30 day follow up mortality; Complete wound healing 30, 60 day follow up; Time to complete wound healing; Re-amputation 60 days; Hospital, ICU & rehab days; TcPO2 change; Quality of Life; Delayed wound healing/complications; Rehospitalization; Surgeries
timeFrame: 15(±3 days) , 30(±7 days) and 60(±7 days) post-procedure follow-up visits
Other outcomes:
Locations:
city: Johannesburg
country: South Africa
facility: Johannesburg Hospital
state: Guateng
city: Parktown West
country: South Africa
facility: Milpark Hospital
state: Guateng
city: Pretoria
country: South Africa
facility: Pretoria Academic Hospital
state: Guateng
city: Tygerburg
country: South Africa
facility: University of Stellenbosch
city: Headington
country: United Kingdom
facility: John Radcliffe Hospital
state: Oxfordshire
Study officials:
affiliation: Biopure Corporation
name: A. Gerson Greenburg, MD, Ph.D.
role: STUDY_DIRECTOR
References: