The purpose of this study is to assess the safety and efficacy of a novel, tissue-engineered vascular prosthesis, the Human Acellular Vascular Graft, HAVG. The HAVG is intended as an alternative to synthetic materials and to autologous grafts in the creation of vascular access for dialysis.
The HAVG is a sterile, non-pyrogenic, acellular tubular graft composed of human collagens and other natural extra-cellular matrix proteins. Upon implantation, it is anticipated (based on pre-clinical studies) that the collagen-based matrix comprising the graft will be infiltrated with host cells and re-modeled by the host. This will result in a vascular structure more similar to the histological composition of the native vascular tissue that may improve graft longevity and be less likely to become infected.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
20
HAVG is implanted into patients' arm.
Duke University Medical Center Department of Vascular Surgery
Durham, North Carolina, United States
The Methodist Hospital
Houston, Texas, United States
Sentara Norfolk General Hospital Vascular & Transplant Specialists
Norfolk, Virginia, United States
HAVG graft assessment
The incidence of aneurysm formation, anastomotic bleeding or rupture, graft infection and irritation/inflammation/infection at the implantation site will be assessed by Doppler ultrasound and tabulated.
Time frame: From baseline to week 26 after HAVG implantation.
HAVG patency rate
Determine the patency (primary, primary assisted and secondary) rate of the Humacyte HAVG by Doppler ultrasound.
Time frame: at Week 26 after HAVG implantation
Adverse Events
Frequency and severity of AEs of each patient will be documented.
Time frame: From baseline to week 26 after HAVG implantation.
HAVG graft interventions
Graft interventions of each patient will be documented.
Time frame: From baseline to week 26 after HAVG implantation.
Change from baseline in Panel Reactive Antibody
Assess changes in the Panel Reactive Antibody response over the 6 months after graft implantation.
Time frame: From baseline to day 29, weeks 12 and 26 after HAVG implantation.
Development of IgG antibodies
Determine whether IgG antibodies to the extracellular matrix material are formed in response to implantation of the HAVG.
Time frame: From baseline to day 29, weeks 12 and 26 after HAVG implantation.
Graft interventions
Determine the rates of interventions needed to maintain / restore patency in the graft.
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Time frame: At each visit, i.e. day 1, day 4-7, day 15, day 29, day 57, week 12, week 16, 20, 26 after HAVG implantation.
HAVG patency rates
Patency rates (primary, primary assisted, and secondary)
Time frame: at 12, 18, 24 months after HAVG implantation.