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Not yet recruitingNCT07696962Updated Sep 2, 2026

Study of ChoironeX GalKO Porcine Thymokidney Xenotransplantation in End-Stage Renal Disease

A Phase 1 interventional study of ChoironeX GalKO Porcine Thymokidney in End Stage Renal Disease, sponsored by Xeno Holdings (US), LLC dba ChoironeX. Not yet recruiting at 2 sites in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-09-02.

Sponsored by Xeno Holdings (US), LLC dba ChoironeX · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
4
Allocation
Not applicable
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The goal of this clinical trial is to learn if a GalKO Porcine Thymokidney can maintain renal function, without the need for dialysis, after transplantation into adult subjects with End Stage Renal Disease.

02

Conditions studied

  • End Stage Renal Disease

Keywords

  • Kidney, Porcine, Xeno-Transplant
03

In context

Kidney Failure, Chronic

2,085 studies on the registry are indexed under Kidney Failure, Chronic; 260 are open to participants now.

This study's planned enrollment of 4 is below the median of 55 across 1,557 interventional studies indexed under Kidney Failure, Chronic.

Browse Kidney Failure, Chronic studies →

Lead sponsor

This is the only study on the registry with Xeno Holdings (US), LLC dba ChoironeX as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • ESRD receiving hemodialysis or peritoneal dialysis for ≥6 months
  • Eligible for kidney transplantation per site criteria
  • \<50% likelihood of receiving a standard deceased-donor kidney transplant within 12 months
  • Blood type and immunologic compatibility with study transplant confirmed by testing
  • EBV seropositive
  • Up to date on recommended vaccinations for immunocompromised individuals
  • Willing to use protocol-required contraception
  • Able to provide informed consent and comply with lifelong follow-up

Exclusion criteria

Exclusion Criteria:

  • Requirement for multi-organ transplantation
  • Living donor available who is ABO-incompatible
  • Kidney disease with high risk of post-transplant recurrence
  • Polycystic kidney disease without prior native nephrectomy
  • Unable or unwilling to comply with study procedures
  • History of non-adherence to medical treatment
  • Identified as vulnerable by psychological assessment
  • Significant uncontrolled psychiatric illness
  • Inadequate social support or caregiver unavailable/unwilling
  • Current drug or alcohol misuse
  • Serious non-renal illness with life expectancy \<1 year
  • BMI \<16 or >35 kg/m²
  • Known hypercoagulable disorder
  • Uncontrolled hypertension or hemodynamic instability at enrollment
  • Clinically significant cardiovascular disease, including poorly controlled coronary artery disease, reduced left ventricular function, recent myocardial infarction or cardiac intervention, or clinically significant arrhythmia requiring treatment
  • Serious liver disease or impaired liver function
  • Diabetes mellitus with poor glycemic control (HbA1c >10%)
  • Active infection at time of transplantation
  • Positive serology for hepatitis B, hepatitis C, or HIV
  • Current, active, or untreated tuberculosis
  • Malignancy within 5 years prior to enrollment, excluding adequately treated non-melanoma skin cancer
  • Current systemic immunosuppressive therapy (excluding permitted corticosteroids)
  • Participation in another interventional drug trial within 60 days prior to enrollment
  • Pregnant or breastfeeding
  • Known severe hypersensitivity to a required study medication with no acceptable alternative
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
4 participants (estimated)

Study arms

  • Experimental
    Porcine Thymokidney

    Porcine Thymokidney transplanted into patients with End Stage Renal Disease

    Biological: ChoironeX GalKO Porcine Thymokidney

Interventions

  • BiologicalChoironeX GalKO Porcine Thymokidney

    A constructed thymokidney from a genetically modified porcine donor will be preserved, packaged, transported and transplanted into the study subject at the study site in the same fashion as a human donor kidney. The thymokidney will remain in the subject throughout the subject's lifetime, or until thymokidney explant.

06

What researchers measure

Primary outcomes

  1. Incidence and severity of adverse events (AEs), serious adverse events (SAEs), and adverse events of special interest (AESIs) from Day 0 through Month 6.

    Time frame: 6 months

  2. Overall survival of the recipient without the need for chronic dialysis at Month 6.

    Time frame: 6 months

Secondary outcomes

  1. Overall survival without the need for dialysis at Month 3.

    Time frame: 3 months

  2. Graft survival free from hyperacute rejection at Day 3.

    Time frame: 3 Days

  3. Incidence of acute and chronic xenograft rejection at Day 14, Months 3 and 6.

    Time frame: 6 months

  4. Banff classification of xenograft pathology at biopsy.

    Time frame: 6 months

  5. Renal filtration function as assessed by creatinine clearance (CrCl) by nuclear medicine scan at Day 14, Months 1, 3, and 6.

    Time frame: 6 months

  6. Total number of clinically significant fluid electrolyte, hemodynamic, acid-base, and hematologic abnormalities requiring medical intervention per patient through Month 6.

    Time frame: 6 months

  7. Total number of clinically significant mineral metabolism abnormalities requiring medical intervention per patient through Month 6

    Time frame: 6 months

  8. Incidences of severe proteinuria (i.e., urinary protein: creatinine ratio of >3.5 g/g) per patient through Month 6.

    Time frame: 6 months

  9. Change from baseline in blood pressure at Months 3 and 6.

    Time frame: 6 months

  10. Incidence of porcine-derived infectious complications through Month 6, in study subjects, site staff, or close personal contacts.

    Time frame: 6 months

  11. Incidence of opportunistic infections (excluding zoonoses) through Month 6, in study subjects.

    Time frame: 6 months

  12. Change from baseline in thymokidney size using ultrasound imaging at Day 14, 21, and Months 1-6.

    Time frame: 6 months

  13. New-onset diabetes after transplant (NODAT) through Month 6.

    Time frame: 6 months

  14. Change from baseline in BMI at Months 3 and 6.

    Time frame: 6 months

  15. Change from baseline in subject-reported quality of life at Months 1, 3, and 6 based on the EuroQol 5-Dimension 5-Level Questionnaire.

    Time frame: 6 months

  16. Change from baseline in subject-reported quality of life at Months 1, 3, and 6 based on the Standardized Outcomes in Nephrology Life Subject Questionnaire.

    Time frame: 6 months

  17. Change from baseline in subject-reported quality of life at Months 1, 3, and 6 based on the Kidney Transplant Questionnaire.

    Time frame: 6 months

  18. Change from baseline in subject-reported quality of life at Months 1, 3, and 6 based on the Patient Global Impression of Change Questionnaire.

    Time frame: 6 months

  19. Evaluate allosensitization in recipients of the thymokidney, defined as a >20% increase from baseline in panel reactive antibody (PRA).

    Time frame: 6 months

  20. Duration of initial hospitalization.

    Time frame: 6 months

  21. Duration of ICU care during initial hospitalization.

    Time frame: 6 months

  22. Number of hospitalizations through Month 6.

    Time frame: 6 months

  23. Time to thymokidney explant, and time to restarting dialysis after explant (if relevant).

    Time frame: 6 months

  24. Incidence of temporary dialysis treatments through Month 6.

    Time frame: 6 months

  25. Number of dialysis-free days through Month 6.

    Time frame: 6 months

  26. Time from transplant to first dialysis treatment (if relevant).

    Time frame: 6 months

07

Study locations

2 sites
  • Study Site 2
    New York, New York 10016, United States
    • Research Coordinator · Contact
  • Study Site 1
    New York, New York 10032, United States
    • Research Coordinator · Contact
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 2, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07696962
Lead sponsor
Xeno Holdings (US), LLC dba ChoironeX
Responsible party
Sponsor
First posted
Jul 10, 2026
Start date
Sep 2026 (estimated)
Primary completion
May 30, 2028 (estimated)
Completion
Sep 30, 2028 (estimated)
Last update
Sep 2, 2026

Study contacts

Gemma Hodgson
Contact
ghodgson@xeno-holdings.com
443-842-0861
Anna Danilewicz
Contact
adanilewicz@xeno-holdings.com
Anh Nyugen, MD
study director · ChoironeX / Our Hybrid Concepts LLC

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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