Haplocompatible Transplant Using TCRα/β Depletion Followed by CD45RA-Depleted Donor Lymphocyte Infusions for Severe Combined Immunodeficiency (SCID)

Registration Number
NCT03597594
Lead Sponsor
St. Jude Children's Research Hospital
Brief Summary

Infants with severe combined immunodeficiency (SCID) have a profound decrease in number and function of immune cells, and therefore remain highly vulnerable to infection. If not corrected this often leads to death. Hematopoietic cell transplantation (HCT) from matched sibling donor is the standard treatment for these patients, unfortunately though; most SCID...

Detailed Description

In this study, the investigators propose to investigate T and B cell recovery using peripheral blood manipulation that removes potentially Graft-Versus-Host-Disease (GVHD) inducing α/β and CD45RA+ T cells, while still providing potentially beneficial donor γδ and memory T cells.
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Recruitment & Eligibility

Status
ACTIVE_NOT_RECRUITING
Sex
All
Target Recruitment
4
Inclusion Criteria

Not provided

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Exclusion Criteria

Not provided

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Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
TCRα/β/CD19-depleted SCTCliniMACSA preparative regimen based on the type of SCID will be given followed by infusion of donor cells. Cells for infusion are prepared using the CliniMACS System Regimen 1 - IL2RG, JAK 3 (Haplocompatible) and all MSD ATG (rabbit) IV Days -9 -8 and -7, Rest Days -6 and -5, Busulfan IV Days -4, -3, and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 2 - RAG1, RAG2 (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan IV Days -5, -4 and -3, Thiotepa IV twice daily, Day -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 3 - ADA, IL7R, CD45 deficiency, CD3 subunits (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan: IV Days -4, -3 and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0
Donor Lymphocyte InfusionsCliniMACSPhase I: On the Phase I portion of the study, up to 4 different dose levels will be evaluated: Dose level -1, Dose ≥0.1 to ≤0.3; Dose level 1, Dose \>0.3 to ≤0.56; Dose level 2, Dose \>0.56 to ≤1.8; Dose level 3, Dose \>1.80 to ≤3.0 Dosing is determined based on the number of CD3+CD45RA-cells/kg and the patient weight in kilograms. Phase II: Participants will receive the Phase I determined maximum tolerated dose (MTD) of DLI. Cells for infusion are prepared using the CliniMACS System.
TCRα/β/CD19-depleted SCTAnti-thymocyte globulin (rabbit)A preparative regimen based on the type of SCID will be given followed by infusion of donor cells. Cells for infusion are prepared using the CliniMACS System Regimen 1 - IL2RG, JAK 3 (Haplocompatible) and all MSD ATG (rabbit) IV Days -9 -8 and -7, Rest Days -6 and -5, Busulfan IV Days -4, -3, and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 2 - RAG1, RAG2 (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan IV Days -5, -4 and -3, Thiotepa IV twice daily, Day -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 3 - ADA, IL7R, CD45 deficiency, CD3 subunits (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan: IV Days -4, -3 and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0
TCRα/β/CD19-depleted SCTBusulfanA preparative regimen based on the type of SCID will be given followed by infusion of donor cells. Cells for infusion are prepared using the CliniMACS System Regimen 1 - IL2RG, JAK 3 (Haplocompatible) and all MSD ATG (rabbit) IV Days -9 -8 and -7, Rest Days -6 and -5, Busulfan IV Days -4, -3, and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 2 - RAG1, RAG2 (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan IV Days -5, -4 and -3, Thiotepa IV twice daily, Day -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 3 - ADA, IL7R, CD45 deficiency, CD3 subunits (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan: IV Days -4, -3 and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0
Donor Lymphocyte InfusionsDonor Lymphocyte InfusionPhase I: On the Phase I portion of the study, up to 4 different dose levels will be evaluated: Dose level -1, Dose ≥0.1 to ≤0.3; Dose level 1, Dose \>0.3 to ≤0.56; Dose level 2, Dose \>0.56 to ≤1.8; Dose level 3, Dose \>1.80 to ≤3.0 Dosing is determined based on the number of CD3+CD45RA-cells/kg and the patient weight in kilograms. Phase II: Participants will receive the Phase I determined maximum tolerated dose (MTD) of DLI. Cells for infusion are prepared using the CliniMACS System.
TCRα/β/CD19-depleted SCTThiotepaA preparative regimen based on the type of SCID will be given followed by infusion of donor cells. Cells for infusion are prepared using the CliniMACS System Regimen 1 - IL2RG, JAK 3 (Haplocompatible) and all MSD ATG (rabbit) IV Days -9 -8 and -7, Rest Days -6 and -5, Busulfan IV Days -4, -3, and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 2 - RAG1, RAG2 (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan IV Days -5, -4 and -3, Thiotepa IV twice daily, Day -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 3 - ADA, IL7R, CD45 deficiency, CD3 subunits (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan: IV Days -4, -3 and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0
TCRα/β/CD19-depleted SCTFludarabineA preparative regimen based on the type of SCID will be given followed by infusion of donor cells. Cells for infusion are prepared using the CliniMACS System Regimen 1 - IL2RG, JAK 3 (Haplocompatible) and all MSD ATG (rabbit) IV Days -9 -8 and -7, Rest Days -6 and -5, Busulfan IV Days -4, -3, and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 2 - RAG1, RAG2 (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan IV Days -5, -4 and -3, Thiotepa IV twice daily, Day -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0 Regimen 3 - ADA, IL7R, CD45 deficiency, CD3 subunits (Haplocompatible) ATG (rabbit) IV Days -9 -8 and -7, Fludarabine IV Days -7, -6, -5 and -4, Busulfan: IV Days -4, -3 and -2, Rest Day -1, TCRα/β/CD19-depleted SCT, Day 0
Primary Outcome Measures
NameTimeMethod
Number of treatment related deaths42 days post DLI

Treatment related deaths will be considered as one of the primary measures to evaluate the safety of a TCRα/β/CD19-depleted graft with CD45RA-depleted DLI in infants with SCID. Number of patients with treatment related deaths will be provided.

Number of overall grade 3-4 acute Graft-Versus-Host-Disease (GVHD)42 days post DLI

Overall grade 3-4 acute GVHD events will be considered as one of the primary measures to evaluate the safety of a TCRα/β/CD19-depleted graft with CD45RA-depleted DLI in infants with SCID. Acute 3-4 GVHD events will be evaluated using established staging/grading criteria and expert consensus guidelines. Number of patients with overall grade 3-4 acute GVHD wil...

Overall Survival(OS)1 year post transplant

To estimate OS at 1 year post transplantation. OS is defined as time from transplantation to death due to any cause. Patients who are alive at the time of analysis will be censored. Based on sample size, either binomial proportion or Kaplan-Meier analysis will be performed.

Secondary Outcome Measures
NameTimeMethod

Trial Locations

Locations (1)

St. Jude Children's Research Hospital

🇺🇸

Memphis, Tennessee, United States

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