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Phase 3 N=355 Randomized Treatment

Comparison of the Human Acellular Vessel (HAV) With ePTFE Grafts as Conduits for Hemodialysis

Renal Failure · End Stage Renal Disease · Hemodialysis · Vascular Access

Enrolled (actual)
355
Serious AEs
85.4%
Results posted
Mar 2025
Primary outcome: Primary: Number of Participants With Loss of Secondary Patency — 29; 34 Participants

Study Design & Population

Study type
Interventional
Phase
Phase 3
Interventions
Human Acellular Vessel (HAV) (Biological); ePTFE graft (Device)
Age
Adult, Older Adult · 18+ yrs
Sex
All
Sponsor
Humacyte, Inc.
Primary completion
May 2019

Outcome Measures

OutcomeResultp-value
PRIMARY
Number of Participants With Loss of Secondary Patency
48; 41
PRIMARY
Number of Participants With Loss of Secondary Patency
48; 41
PRIMARY
Number of Participants With Loss of Secondary Patency
48; 41
SECONDARY
Number of Participants With Loss of Primary Patency
146; 121
SECONDARY
Number of Participants With Loss of Primary Patency
146; 121
SECONDARY
Number of Participants With Loss of Primary Patency
146; 121
SECONDARY
Number of Participants With Loss of Primary Patency
146; 121
SECONDARY
Study Conduit Abandonment
69; 53
SECONDARY
Study Conduit Abandonment
69; 53
SECONDARY
Rate of Adjudicated Study Conduit Access Related Infections
0.93; 4.54
SECONDARY
Access-related Infections
17; 27
SECONDARY
Participants With at Least 1 Intervention Required to Achieve/Maintain Secondary Patency
146; 116
SECONDARY
Total Interventions Performed to Maintain Secondary Patency (Ballon Size Not > 6 Millimeters)
2.7; 2.7
SECONDARY
Total Interventions Performed to Maintain Secondary Patency (Balloon Size > 6 Millimeters)
7.3; 2.7
SECONDARY
Thrombosis of Study Access That Required Intervention
409; 205
SECONDARY
Thrombosis of Study Access That Required Intervention
409; 205
SECONDARY
Dialysis Efficiency as Measured by spKt/Vurea (Subset of Subjects)
1.61; 1.67
SECONDARY
Severity of Adverse Events
8; 9; 39; 55; 74; 64
SECONDARY
Number of Participants With at Least One Adverse Event
175; 174
SECONDARY
True Aneurysm Formation (Conduit Lumen Diameter >9 Millimeters)
23; 12
SECONDARY
True Aneurysm Formation (Conduit Lumen Diameter >9 Millimeters)
23; 12
SECONDARY
Pseudoaneurysm Formation
113; 59
SECONDARY
Pseudoaneurysm Formation
113; 59
SECONDARY
Study Conduit Spontaneous Ruptures Due to Iatrogenic Injury
0; 0
SECONDARY
Study Conduit Spontaneous Ruptures Due to Iatrogenic Injury
0; 0
SECONDARY
Anastomotic Bleeding or Rupture
0; 0
SECONDARY
Anastomotic Bleeding or Rupture
0; 0
SECONDARY
Calculated Panel Reactive Antibody More Than 20% Change From Baseline
2; 10
SECONDARY
Calculated Panel Reactive Antibody More Than 20% Change From Baseline
2; 10
SECONDARY
Mean Inner Diameter of Conduit (Millimeter)
6.19; 6.23
SECONDARY
Mean Inner Diameter of Conduit (Millimeter)
6.19; 6.23
SECONDARY
Mean Inner Diameter of Conduit (Millimeter)
6.19; 6.23

Summary

The main purpose of this study is to compare the Human Acellular Vessel (HAV) with ePTFE grafts when used for hemodialysis access.

Eligibility Criteria

Inclusion Criteria

  • Subjects with ESRD who need placement of an AV graft in the arm.
  • Either on hemodialysis or expected to start hemodialysis within 12 weeks of study conduit implantation.
  • Suitable anatomy for implantation of straight or looped conduits in either the forearm or upper arm (not crossing the elbow).
  • Hemoglobin ≥8 g/dL and platelet count ≥100,000 cells/mm3 prior to Day 0 (within 35 days).
  • Other hematological and biochemical parameters within a range consistent with ESRD prior to Day 0 (within 35 days).
  • Adequate liver function prior to Day 0 (within 35 days).
  • Female subjects must be either:
  • Of non-childbearing potential Or
  • Must agree to use at least one form of birth control methods for the duration of the study.
  • Subject, or legal representative, able to communicate effectively with investigative staff, competent and willing to give written informed consent, and able to comply with entire study procedures including all scheduled follow-up visits.
  • Life expectancy of at least 1 year.

Exclusion Criteria

  • History or evidence of severe peripheral vascular disease in the intended arm for implantation.
  • Known or suspected central vein stenosis or conduit occlusion on the ipsilateral side of planned implantation, unless the stenosis is corrected prior to study conduit implantation.
  • Treatment with any investigational drug or device within 60 days prior to study entry (Day 0).
  • Cancer that is actively being treated with a cytotoxic agent.
  • Documented hyper-coagulable state.
  • Bleeding diathesis.
  • Active clinically significant immune-mediated disease, not controlled by maintenance immunosuppression.
  • High dose glucocorticoid therapy for treatment of autoimmune flare, or other inflammatory diseases is excluded.
  • Patients using glucocorticoids for immunosuppression post-transplant to prevent against transplanted allograft rejection in the period post allograft failure are excluded.
  • The following examples of immunosuppressive agents (or the like) are exclusionary for enrollment in this clinical trial:
  • tacrolimus or FK506 [Prograf]
  • mycophenolate mofetil [Cellcept],
  • cyclosporine [Sandimmune or Gengraf] i-Sirolimus administered systemically (Sirolimus in drug eluting stents is NOT an exclusion)
  • Anticipated renal transplant within 6 months.
  • Venous outflow from study conduit cannot be placed more centrally than the venous outflow of any previous failed access in that extremity.
  • Active local or systemic infection (white blood cells [WBC] > 15,000 cells/mm3 at Screening). If the infection resolves, the subject must be at least one week post resolution of that infection before implantation.
  • Known serious allergy to planned antiplatelet agent.
  • Pregnant women, or women intending to become pregnant during the course of the trial.
  • Any other condition which in the judgment of the investigator would preclude adequate evaluation of the safety and efficacy of the study conduit.
  • Previous enrollment in this study or any other study with the HAV.
  • Employees of Humacyte and employees or relatives of the investigator.
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT02644941). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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