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Renal Allograft Tolerance Through Mixed Chimerism

Renal Allograft Tolerance Through Mixed Chimerism

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01780454
Enrollment
2
Registered
2013-01-31
Start date
2013-03-31
Completion date
2020-06-30
Last updated
2021-04-19

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

Conditions

End Stage Renal Disease

Keywords

End Stage Renal Disease, Renal Transplant, Bone Marrow Transplant, Tolerance, Chimerism, ESRD

Brief summary

This study will examine the safety and effectiveness of a combination kidney and bone marrow transplant from a haplo-identical related donor. An investigational medication and other treatments will be given prior to and after the transplant to help protect the transplanted kidney from being attacked by the body's immune system

Interventions

T-Cell Depleting Agent

DRUGRituximab

B-Cell Depleting Agent

RADIATIONTotal Body Irradiation

Bone Marrow Depletion

Sponsors

Massachusetts General Hospital
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Male or female 18-60 years of age * Candidate for a living-donor renal allograft with a one haplotype identical donor identified. * First or second transplant with either a living donor or cadaveric transplant as the first transplant. * Positive serologic testing for EBV indicating past exposure. Key

Exclusion criteria

* ABO blood group-incompatible renal allograft. * Evidence of anti-HLA antibody within 60 days prior to transplant as assessed by routine methodology (AHG and/or ELISA) * Positive testing for: HIV, hepatitis B core antigen, or hepatitis C virus or positivity for hepatitis B surface antigen. * Cardiac ejection fraction \< 40% or clinical evidence of insufficiency. * History of cancer other than basal cell carcinoma of the skin or carcinoma in situ of the cervix. * Underlying renal disease etiology with a high risk of disease recurrence in the transplanted kidney (such as focal segmental glomerulosclerosis, type I or II nonproliferative glomerulonephritis). * Prior dose-limiting radiation therapy. * Abnormal (\>2 times lab normal) values for (a) liver function chemistries (ALT, AST, AP), (b) bilirubin, (c) coagulation studies (PT, PTT). * The presence of any medical condition that the investigator deems incompatible with participation in the trial.

Design outcomes

Primary

MeasureTime frameDescription
Successful Withdrawal of Immunosuppressive Therapy5 yearsThe primary endpoint is induction of transient mixed chimerism and renal allograft tolerance without engraftment syndrome or acute kidney injury

Secondary

MeasureTime frameDescription
Number of Participants With Engraftment Syndrome5 YearsConstellation of symptoms known Engraftment Syndrome

Countries

United States

Participant flow

Participants by arm

ArmCount
Combined Bone Marrow and Kidney Transplantation
Conditioning regimen consisting of Rituximab, MEDI-507, Total Body Irradiation, Thymic Irradiation followed by simultaneous bone marrow and kidney transplantation MEDI-507: T-Cell Depleting Agent Rituximab: B-Cell Depleting Agent Total Body Irradiation: Bone Marrow Depletion Thymic Irradiation
2
Total2

Baseline characteristics

CharacteristicCombined Bone Marrow and Kidney Transplantation
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
2 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
White
1 Participants
Region of Enrollment
United States
2 participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
2 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 2
other
Total, other adverse events
2 / 2
serious
Total, serious adverse events
1 / 2

Outcome results

Primary

Successful Withdrawal of Immunosuppressive Therapy

The primary endpoint is induction of transient mixed chimerism and renal allograft tolerance without engraftment syndrome or acute kidney injury

Time frame: 5 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Combined Bone Marrow and Kidney TransplantationSuccessful Withdrawal of Immunosuppressive Therapy2 Participants
Secondary

Number of Participants With Engraftment Syndrome

Constellation of symptoms known Engraftment Syndrome

Time frame: 5 Years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Combined Bone Marrow and Kidney TransplantationNumber of Participants With Engraftment Syndrome2 Participants

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