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Long-Term Follow-Up of TX200-TR101 (STEADFAST Long Term)

Long-Term Follow-Up of Patients Who Have Received an Autologous Antigen-Specific Chimeric Antigen Receptor T Regulatory Cell Therapy (CAR- Treg Therapy, TX200-TR101) in a Prior Clinical Study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05987527
Enrollment
11
Registered
2023-08-14
Start date
2023-08-15
Completion date
2039-06-11
Last updated
2025-12-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

End Stage Renal Disease, Kidney Transplant Rejection

Keywords

Regulatory T-Cells, Genetically modified cells, Chimeric antigen receptor, Long term follow up, T-Regs, Cell Therapy

Brief summary

This long-term follow-up study is being conducted to collect long-term (up to 15 years post-infusion) safety and tolerability data from subjects enrolled in studies evaluating TX200-TR101.

Detailed description

This is long- term follow up observational trial for patients who participated previously to a multicentre, first-in-human, open-label, single ascending dose, dose-ranging study of autologous, chimeric antigen receptor T regulatory cells (CAR-Treg) in HLA-A2 mismatched living donor kidney transplant recipients, with a control cohort of mismatched kidney transplant recipients of similar immunological risk. The aim is for this observational long-term follow up study (TX200-KT03) is to collect long-term (up to 15 years post-infusion) safety and tolerability data from subjects enrolled in studies evaluating TX200-TR101.

Interventions

DIAGNOSTIC_TESTBlood sample

Routine procedures

Sponsors

Sangamo Therapeutics
Lead SponsorINDUSTRY

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 72 Years
Healthy volunteers
No

Inclusion criteria

1. Subjects who enrolled in the Phase I/IIa study TX200-KT02, received a transplanted kidney and have either completed or withdrawn from that study. 2. Willing and able to provide written informed consent (IC) in accordance with local regulations and governing Independent Ethics Committee (IEC)/Institutional Review Board (IRB) requirements prior to any procedure or evaluation performed specifically for the sole purpose of the study.

Exclusion criteria

* N/A

Design outcomes

Primary

MeasureTime frameDescription
Safety and Tolerability of TX200-TR101 infusion evaluated by overall survivalUp to 15 years post infusionLong term safety and tolerability of TX200-TR101 infusion evaluated by overall survival
Safety and Tolerability TX200-TR101 infusion evaluated by and incidence of serious adverse events (SAEs) according to CTCAE V5.0.Up to 15 years post infusionLong term safety and tolerability of TX200-TR101 infusion evaluated by and incidence of serious adverse events (SAEs) according to CTCAE V5.0.

Secondary

MeasureTime frameDescription
Incidence of Adverse Events related to TX200-TR101 over a long term periodUp to 15 years post infusionIncidence of Adverse Events related to TX200-TR101
Incidence of Adverse Events of special interest as defined in the protocol over long termUp to 15 years post infusionIncidence of Adverse Events of special interest as defined in the protocol
Change in immunosuppression regime to evaluate long term safety of TX200-TR101Up to 15 years post infusionChange in immunosuppression regime
Long term graft related outcomesUp to 15 years post infusionIncidence of graft rejection according to the Banff classification criteria
Incidents of deaths to evaluate composite efficacy profile of TX200-TR101Up to 15 years post infusionIncidences of death of TX200-TR101 participants
Incidence of chronic graft dysfunction measured by changes in estimated glomerular filtration rate to evaluate the composite efficacy profile of TX200-TR101Up to 15 years post infusionIncidence of chronic graft dysfunction measured by changes in estimated glomerular filtration rate
Incidence of graft loss due to rejection to evaluate the composite efficacy profile of TX200-TR101Up to 15 years post infusionIncidence of graft loss due to rejection
Number of in-patient days in hospital to evaluate the effect of TX200-TR101 over a long termUp to 15 years post infusionNumber of in-patient days in hospital

Countries

Belgium, Netherlands, United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026