Xeltis Hemodialysis Access Graft (aXess) US Study

Not Applicable

• Conditions: End Stage Renal Disease
• Interventions: Device: Xeltis Hemodialysis Access (aXess) graft

• Registration Number: NCT06494631
• Lead Sponsor: Xeltis

Brief Summary

A multi-center, prospective, single-arm, non-randomized, staged, pivotal clinical study to evaluate the safety and performance of the aXess graft in subjects aged 18 and above, diagnosed with end-stage kidney disease, and possessing an estimated glomerular filtration rate (eGFR) less than 20 ml/min, who intend to undergo hemodialysis but are considered unsuitable candidates for fistula creation by the investigating surgeon.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2024-07-02
• Study First Submitted QC: 2024-07-02
• Study First Posted: 2024-07-10
• Study Start: 2024-11-11
• Status Verified: 2024-12
• Last Update Submitted: 2024-12-20
• Last Update Posted: 2024-12-24
• Primary Completion: 2028-01
• Study Completion: 2032-01

Recruitment & Eligibility

• Status: ENROLLING_BY_INVITATION
• Sex: All
• Target Recruitment: 140

Inclusion Criteria

1. Subjects with end-stage renal disease (ESRD) who require placement of an AVG in the upper extremity to start (within the first 6 months of follow-up) or maintain hemodialysis therapy and are deemed unsuitable for fistula creation by the investigational surgeon.
2. At least 18 years of age at screening.
3. Suitable anatomy (e.g. a target vein with a minimum diameter of 4mm) for the implantation of an aXess graft
4. The patient has been informed about the nature of the study, agrees to its provisions, and has provided written informed consent.
5. The patient has been informed and agrees to pre- and post-procedure follow-up.
6. Life expectancy of at least 12 months.

Exclusion Criteria

1. History or evidence of severe cardiac disease (NYHA Functional Class IV and/or EF <25%), myocardial infarction within 6 months of study enrolment, ventricular tachyarrhythmias requiring continuing treatment, or unstable angina.
2. Uncontrolled or poorly controlled diabetes in the opinion of the investigator. Recommended standards of A1c level <8% / 183 mg/dl / 10.2 eAG.
3. Abnormal blood values (e.g., leukopenia with white blood cell count (WBC) <4,000/mm³ and/or anemia with Hemoglobin <8g/dL and/or thrombocytopenia <100,000/mm³) that could influence patient recovery and or/ graft hemostasis.
4. Reduced liver function, defined as: >2x the upper limit of normal for serum bilirubin, International Normalized Ratio (INR) >1.5 or prothrombin time (PT) >18 seconds.
5. Any active local or systemic infection.
6. Known heparin-induced thrombocytopenia.
7. Known active bleeding disorder and/or any coagulopathy or thromboembolic disease.
8. Allergies to study device (nitinol) or agents/medication, such as contrast agents or aspirin, that can't be controlled medically.
9. Anticipated renal transplant within 6 months.
10. Known or suspected central vein obstruction on the side of planned graft implantation.
11. Previous dialysis access graft in the operative limb, unless the aXess graft can be placed more proximally than the previously failed graft.
12. Previous enrollment in this study.
13. Subject is participating in another study.
14. A female who is breastfeeding or of childbearing potential with a positive pregnancy test or not using adequate contraception.
15. Any other condition which, in the judgment of the investigator, would preclude adequate evaluation for the safety and performance of the study conduit.

Intra-operative exclusion criteria:

1. Unsuitable anatomy to implant the aXess graft (e.g., target vein and/or artery diameter not suitable; severe calcification).

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
aXess graft	Xeltis Hemodialysis Access (aXess) graft	-

Primary Outcome Measures

Name	Time	Method
Secondary patency rate in survivors	12 months	Secondary patency is defined as the interval between vascular access creation and abandonment with or without interventions (operative or endovascular) aimed to maintain or restore the vascular access's functionality.; Patients who died or changed dialysis modality before 12 months will be excluded from the primary effectiveness analysis if loss of secondary patency was not observed before these events
Rate of device related infections and bleeding	12 months	Infections are defined as: All device or procedure related infections potentially resulting from surgical manipulations or device cannulation, including both minor and major infections., Bleeding (procedure or device related bleeding, at least BARC 2) and device related hematoma defined as blood accumulation around the graft arising from the implantation or cannulation that triggered a medical or surgical action

Secondary Outcome Measures

Name	Time	Method
Rate of access-related interventions required to achieve/maintain patency	6, 12, 18, 24, 60 months
Implantation success rate	1 day, from moment of implant until discharge	Defined as a technically successful aXess graft implantation in the planned configuration, free from kinking and tension in the anastomoses.
Time to the first cannulation	12 months	Assessed only in subjects already on dialysis at the time of implant
Following the first cannulation, the number of days with CVC in situ (catheter contact time) during the first 12 months, irrespective of access abandonment	12 months
Freedom from device-related SAE	Discharge, 1, 3, 6, 12, 18, 24, and 60 months
Incidence rate of access site infections	6, 12, 18, 24, and 60 months	Infections are defined as all device or procedure related infections potentially resulting from surgical manipulations or device cannulation, including both minor and major infections.
Proportion of hemodialysis sessions completed via a central venous catheter (CVC) during the first 12 months of access creation and access cannulation, irrespective of access abandonment	12 months
Rate of peri-reintervention vascular injuries	6 months
Patency (primary, primary assisted, secondary, and functional) rates	6, 12, 18, 24, and 60 months	Primary patency: defined as the interval between vascular access creation and the first intervention to maintain or restore patency.; Assisted primary patency: defined as the interval between vascular access creation and the first occlusion (thrombosis), including interventions (operative or endovascular) aimed to maintain the functionality of the vascular access.; Secondary patency: defined as the interval between vascular access creation and abandonment with or without interventions (operative or endovascular) aimed to maintain or restore the vascular access's functionality Functional patency: defined as an AV access that can be cannulated with two dialysis needles for at least 75% of dialysis sessions within a 4-week period to achieve the prescribed dialysis.
Time to first intervention and to access abandonment	60 months

Trial Locations

Locations (4)

AKDHC Medical Research Services, LLC; 🇺🇸 Tucson, Arizona, United States

Greenwood Leflore Hospital; 🇺🇸 Greenwood, Mississippi, United States

Surgical Specialists of Charlotte; 🇺🇸 Charlotte, North Carolina, United States

Flow Vascular, Surgery Specialty Hospitals of America; 🇺🇸 Pasadena, Texas, United States