Phase 3
N=355
Comparison of the Human Acellular Vessel (HAV) With ePTFE Grafts as Conduits for Hemodialysis
Renal Failure · End Stage Renal Disease · Hemodialysis · Vascular Access
Bottom Line
View on ClinicalTrials.gov: NCT02644941 ↗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
| Outcome | Result | p-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.
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.