Early Trial of Allogeneic Hematopoietic Stem Cell Transplantation for Patients Who Will Receive a Kidney Transplant From the Same Donor

Sponsor

Alice Bertaina (Other)

Overall Status

Not yet recruiting

CT.gov ID

NCT05508009

Collaborator

(none)

Enrollment

Location

Arms

144

Anticipated Duration (Months)

0.1

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

This is a single center, non-randomized, non-controlled open-label phase 1b/2a trial of performing sequential αβdepleted-HSCT and KT in patients requiring KT to prevent kidney rejection post-KT, in the absence of any post-KT immunosuppression, to abrogate the need for lifelong immunosuppression, the risk of chronic rejection and, ultimately, the need for repeated transplantation.

Condition or Disease	Intervention/Treatment	Phase
SIOD With CKD Stage 3 Through 5 Cystinosis With CKD Stage 3 Through 5 FSGS With CKD Stage 3 Through 5 SLE Nephritis With CKD Stage 3 Through 5	Drug: Cyclophosphamide 1200 mg/Kg Drug: Fludarabine Drug: Cyclophosphamide 100 mg/Kg Radiation: Total Body Irradiation Drug: ATG Drug: Rituximab Drug: Melphalan Device: CliniMACS® TCR α/β Reagent Kit and CliniMACS® CD19 System Procedure: Kidney Transplant	Phase 1/Phase 2

Study Design

Study Type:

Interventional

Anticipated Enrollment :

12 participants

Allocation:

Non-Randomized

Intervention Model:

Sequential Assignment

Intervention Model Description:

The study has two cohorts (Cohort 1b which will be safety lead-in with 4 patients, and then cohort 2a of 8 patients). The data generated will be compared with historical data available on outcomes of KT performed as SoC in this patient population.The study has two cohorts (Cohort 1b which will be safety lead-in with 4 patients, and then cohort 2a of 8 patients). The data generated will be compared with historical data available on outcomes of KT performed as SoC in this patient population.

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

Phase 1b/2a Trial of Allogeneic Hematopoietic Stem Cell Transplantation (HSCT) From an HLA-partially Matched Related or Unrelated Donor After TCRαβ+ T-cell/CD19+ B-cell Depletion for Patients Who Will Receive a Kidney Transplant (KT) From the Same HSCT/KT Donor

Anticipated Study Start Date :

Oct 1, 2022

Anticipated Primary Completion Date :

Oct 1, 2032

Anticipated Study Completion Date :

Oct 1, 2034

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Cohort 1b: Conditioning Regimen A An initial cohort of 4 patients will be enrolled as part of the initial Phase 1b safety run-in evaluation. Patients will undergo an αβdepleted hematopoietic stem cell transplant (HSCT) after receiving conditioning regimen A (conditioning regimen type is dependent on underlying disease and not part of the experimental goals). In the presence of donor myeloid engraftment, at least 3 months post-HSCT, patients will undergo a living donor kidney transplant (KT) using same donor as HSCT. In the absence of any clinical signs of kidney rejection, pharmacological immunosuppression (used for KT) will be tapered off by Day +90 post-KT.	Drug: Cyclophosphamide 1200 mg/Kg Cyclophosphamide 1200 mg/Kg will be administered as part of the conditioning regimen A prior to HSCT Drug: Fludarabine Fludarabine (starting dose 0.5 mg/Kg and then PK guided to reach an AUC of 18-20) will be administered as part of the conditioning regimen prior to HSCT Radiation: Total Body Irradiation Total Body Irradiation 200 cGy will be administered as part of the conditioning regimen prior to HSCT Other Names: TBI Drug: ATG ATG 7.5 mg/Kg will be administered as part of the conditioning regimen prior to HSCT Drug: Rituximab Rituximab 200 mg/m2 will be administered within 24 hours of the HSCT Device: CliniMACS® TCR α/β Reagent Kit and CliniMACS® CD19 System CliniMACS® TCRαβ-Biotin and CD19 Systems will be used to create the mobilized peripheral blood stem cells (PBSC) from allogeneic donors depleted of TCRαβ+ T cells and CD19+ B cells to be infused into the patient for the HSCT. The target dose for the number of CD34+ HSC infused is > 10 x 10^6 cells/Kg recipient weight. The minimum dose is 2 x 10^6 cells/Kg. There is no upper limit to the dose of CD34+ HSC infused as long as no more than 1 x 10^5 TCRαβ+ T-cells/Kg are infused. The target dose of TCRαβ+ T cells/Kg is < 0.50 x 10^5. Procedure: Kidney Transplant In the presence of donor myeloid engraftment, at least 3 months post-HSCT, with > 95% donor CD3+ chimerism, in the absence of signs of active aGvHD or cGvHD (moderate or severe), at least 4 weeks off of immunosuppression for any previously occurring acute or chronic GvHD (except single agent treatment of mild cGvHD), and with a BMI >18.5, ambulatory and active in addition to the eligibility for the standard of care KT criteria, patients will undergo a living donor KT using same donor as HSCT
Experimental: Cohort 2a: Conditioning Regimen A If the intervention is determined to be safe and non-futile, the study will continue to enroll eight more patients under Phase 2a following the same treatment as Phase 1b.	Drug: Cyclophosphamide 1200 mg/Kg Cyclophosphamide 1200 mg/Kg will be administered as part of the conditioning regimen A prior to HSCT Drug: Fludarabine Fludarabine (starting dose 0.5 mg/Kg and then PK guided to reach an AUC of 18-20) will be administered as part of the conditioning regimen prior to HSCT Radiation: Total Body Irradiation Total Body Irradiation 200 cGy will be administered as part of the conditioning regimen prior to HSCT Other Names: TBI Drug: ATG ATG 7.5 mg/Kg will be administered as part of the conditioning regimen prior to HSCT Drug: Rituximab Rituximab 200 mg/m2 will be administered within 24 hours of the HSCT Device: CliniMACS® TCR α/β Reagent Kit and CliniMACS® CD19 System CliniMACS® TCRαβ-Biotin and CD19 Systems will be used to create the mobilized peripheral blood stem cells (PBSC) from allogeneic donors depleted of TCRαβ+ T cells and CD19+ B cells to be infused into the patient for the HSCT. The target dose for the number of CD34+ HSC infused is > 10 x 10^6 cells/Kg recipient weight. The minimum dose is 2 x 10^6 cells/Kg. There is no upper limit to the dose of CD34+ HSC infused as long as no more than 1 x 10^5 TCRαβ+ T-cells/Kg are infused. The target dose of TCRαβ+ T cells/Kg is < 0.50 x 10^5. Procedure: Kidney Transplant In the presence of donor myeloid engraftment, at least 3 months post-HSCT, with > 95% donor CD3+ chimerism, in the absence of signs of active aGvHD or cGvHD (moderate or severe), at least 4 weeks off of immunosuppression for any previously occurring acute or chronic GvHD (except single agent treatment of mild cGvHD), and with a BMI >18.5, ambulatory and active in addition to the eligibility for the standard of care KT criteria, patients will undergo a living donor KT using same donor as HSCT
Experimental: Cohort 1b: Conditioning Regimen B An initial cohort of 4 patients will be enrolled as part of the initial Phase 1b safety run-in evaluation. Patients will undergo an αβdepleted hematopoietic stem cell transplant (HSCT) after receiving conditioning regimen B (conditioning regimen type is dependent on underlying disease and not part of the experimental goals). In the presence of donor myeloid engraftment, at least 3 months post-HSCT, patients will undergo a living donor kidney transplant (KT) using same donor as HSCT. In the absence of any clinical signs of kidney rejection, pharmacological immunosuppression (used for KT) will be tapered off by Day +90 post-KT.	Drug: Fludarabine Fludarabine (starting dose 0.5 mg/Kg and then PK guided to reach an AUC of 18-20) will be administered as part of the conditioning regimen prior to HSCT Drug: Cyclophosphamide 100 mg/Kg Cyclophosphamide 100 mg/Kg will be administered as part of the conditioning regimen B prior to HSCT Radiation: Total Body Irradiation Total Body Irradiation 200 cGy will be administered as part of the conditioning regimen prior to HSCT Other Names: TBI Drug: ATG ATG 7.5 mg/Kg will be administered as part of the conditioning regimen prior to HSCT Drug: Rituximab Rituximab 200 mg/m2 will be administered within 24 hours of the HSCT Drug: Melphalan Melphalan 100 mg/m2 will be administered as part of the conditioning regimen prior to HSCT Device: CliniMACS® TCR α/β Reagent Kit and CliniMACS® CD19 System CliniMACS® TCRαβ-Biotin and CD19 Systems will be used to create the mobilized peripheral blood stem cells (PBSC) from allogeneic donors depleted of TCRαβ+ T cells and CD19+ B cells to be infused into the patient for the HSCT. The target dose for the number of CD34+ HSC infused is > 10 x 10^6 cells/Kg recipient weight. The minimum dose is 2 x 10^6 cells/Kg. There is no upper limit to the dose of CD34+ HSC infused as long as no more than 1 x 10^5 TCRαβ+ T-cells/Kg are infused. The target dose of TCRαβ+ T cells/Kg is < 0.50 x 10^5. Procedure: Kidney Transplant In the presence of donor myeloid engraftment, at least 3 months post-HSCT, with > 95% donor CD3+ chimerism, in the absence of signs of active aGvHD or cGvHD (moderate or severe), at least 4 weeks off of immunosuppression for any previously occurring acute or chronic GvHD (except single agent treatment of mild cGvHD), and with a BMI >18.5, ambulatory and active in addition to the eligibility for the standard of care KT criteria, patients will undergo a living donor KT using same donor as HSCT
Experimental: Cohort 2a: Conditioning Regimen B If the intervention is determined to be safe and non-futile, the study will continue to enroll eight more patients under Phase 2a following the same treatment as Phase 1b.	Drug: Fludarabine Fludarabine (starting dose 0.5 mg/Kg and then PK guided to reach an AUC of 18-20) will be administered as part of the conditioning regimen prior to HSCT Drug: Cyclophosphamide 100 mg/Kg Cyclophosphamide 100 mg/Kg will be administered as part of the conditioning regimen B prior to HSCT Radiation: Total Body Irradiation Total Body Irradiation 200 cGy will be administered as part of the conditioning regimen prior to HSCT Other Names: TBI Drug: ATG ATG 7.5 mg/Kg will be administered as part of the conditioning regimen prior to HSCT Drug: Rituximab Rituximab 200 mg/m2 will be administered within 24 hours of the HSCT Drug: Melphalan Melphalan 100 mg/m2 will be administered as part of the conditioning regimen prior to HSCT Device: CliniMACS® TCR α/β Reagent Kit and CliniMACS® CD19 System CliniMACS® TCRαβ-Biotin and CD19 Systems will be used to create the mobilized peripheral blood stem cells (PBSC) from allogeneic donors depleted of TCRαβ+ T cells and CD19+ B cells to be infused into the patient for the HSCT. The target dose for the number of CD34+ HSC infused is > 10 x 10^6 cells/Kg recipient weight. The minimum dose is 2 x 10^6 cells/Kg. There is no upper limit to the dose of CD34+ HSC infused as long as no more than 1 x 10^5 TCRαβ+ T-cells/Kg are infused. The target dose of TCRαβ+ T cells/Kg is < 0.50 x 10^5. Procedure: Kidney Transplant In the presence of donor myeloid engraftment, at least 3 months post-HSCT, with > 95% donor CD3+ chimerism, in the absence of signs of active aGvHD or cGvHD (moderate or severe), at least 4 weeks off of immunosuppression for any previously occurring acute or chronic GvHD (except single agent treatment of mild cGvHD), and with a BMI >18.5, ambulatory and active in addition to the eligibility for the standard of care KT criteria, patients will undergo a living donor KT using same donor as HSCT

Outcome Measures

Primary Outcome Measures

Number of patients who are able to discontinue immunosuppression post-KT [Day +90 post-KT]
Donor chimerism equal or greater to 95% after successful HSCT/KT therapy allows for withdrawal of immunosuppressive therapy in patient

Secondary Outcome Measures

Number of patients with successful kidney function [+1 year post-KT]
Normal renal function as measured by the glomerular filtration rate (GFR) using the CKiD Under 25 (U25) formula that includes the serum creatinine and the Cystatin C, along with normal protein excretion.
Number of patients with myloid engraftment [Day +42 post-HSCT]
Cumulative incidence of donor myeloid engraftment by Day +42 post-HSCT. Myeloid engraftment is defined as ANC of > 0.5 x 109/L for three consecutive laboratory values obtained on different days. Date of myeloid engraftment is the first date of the three lab values taken.
Number of patients with persistent full donor chimerism [Day +180 and 1 year post-KT]
>95% donor chimerism for myeloid and lymphoid cells as assessed by peripheral blood (total, CD15+, CD3+, CD19+, CD56+, and CD34+) chimerism by Short Tandem Repeat (STR) or next-generation sequencing (NGS) analysis
Number of patients with acute GvHD [Day +90 and Day +180 post-HSCT]
Cumulative incidence of acute GvHD (graded as II-IV and III-IV using the Magic criteria)
Number of patients with chronic GvHD [+1 year post-HSCT]
Cumulative incidence of chronic GvHD by NIH consensus criteria
Number of patients with de novo acute GVHD [+1 year post-KT]
Cumulative incidence of de novo acute GvHD (graded as II-IV and III-IV using the Magic criteria)
Number of patients with de novo chronic GVHD [+1 year post-KT]
Cumulative incidence of de novo chronic GVHD as measured by NIH consensus criteria
Number of patients with functional tolerance to donor cells [6- and 12-months post-KT]
Lack of recipient immune response to donor cells when tested with mixed lymphocyte culture
Number of cases of secondary malignancies [+5 year post-KT]
New incidence of secondary malignancies in patients after study participation

Eligibility Criteria

Criteria

Ages Eligible for Study:

1 Year to 30 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

Anticipated need for kidney transplant due to:

Underlying genetic/immunologic disease the following conditions i. SIOD ii. FSGS

Cystinosis iv. SLE v. Membranoproliferative glomerulonephritis vi. Renal vasculitis characterized by positivity of the presence of ANCA vii. Other genetic diseases leading to kidney disease requiring KT Or b. Patients who have rejected a previous KT regardless of the underlying disease

Chronic kidney disease (CKD) stage 3 or greater
Steroids < 0.5 mg/Kg/day
The donor and recipient must be identical, as determined by high resolution typing, at least one allele of each of the following genetic loci: HLA-A, HLA-B, HLA-Cw, HLA-DQB1 and HLA-DRB1
Lansky/Karnofsky score > 50; the Karnofsky Scale will be used in subjects ≥ 16 years of age, and the Lansky Scale will be used for those < 16 years of age.
Able to give informed consent or have an LAR available to provide consent
Male and female subjects of childbearing potential must agree to use an effective means of birth control to avoid pregnancy throughout the transplant procedure, while on immunosuppression, and if the subject experiences any cGvHD

Exclusion Criteria:

Pregnant or lactating females.
Greater than Grade II aGvHD or severe, unmanaged extensive cGvHD due to a previous allograft at the time of inclusion
Dysfunction of liver (ALT/AST > 10 times upper normal value, or direct bilirubin > 3 times upper normal value), unmanageable dysfunction of renal function while undergoing dialysis
Severe cardiovascular disease at the time of evaluation unresponsive to nutritional and dialytic support (left ventricular ejection fraction < 40%), or clinical or echocardiographic evidence of severe diastolic dysfunction
Current active infectious disease. Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial. For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated. Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. Patients with HCV infection who are currently on treatment are eligible if they have an undetectable HCV viral load.
Serious concurrent uncontrolled medical disorders except for primary disease leading to chronic kidney disease
Lack of patient/parent/guardian informed consent
Any severe concurrent disease which, in the judgement of the investigator would place the patient at increased risk during participation in the study