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| ID | Type | Description | Link |
|---|---|---|---|
| BMT253 | Other Identifier | OnCore |
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| Name | Class |
|---|---|
| National Institutes of Health (NIH) | NIH |
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Chronic graft versus host disease (cGVHD) is a common complication of bone marrow or hematopoietic cell transplant from another person (allogeneic transplant). This study will determine if subjects with steroid dependent/refractory cGVHD can tolerate infusion of donor regulatory T cells and whether their cGVHD responds to the infusion.
PRIMARY OBJECTIVES:
Determine the safety and tolerability of donor T regulatory (Treg) cell infusions in subjects with steroid dependent/refractory chronic graft versus host disease.
SECONDARY OBJECTIVES:
Determine the quantitative blood Treg cell changes following the cell infusions
Determine clinical efficacy of donor Treg cells as failure-free survival (FFS) defined by the absence of a new immunosuppressive therapy added, non-relapse mortality, and recurrent malignancy at Day 180 after the first Treg infusion
In addition to FFS, the study will measure the change in:
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Regulatory T Cells | Experimental | Cohort 1 at 1x105 Treg cells/kg, Cohort 2 at 5x105 Treg cells/kg and Cohort 3 at 1.5x106 Treg cells/kg with an extension phase at the MTD (or maximum administered dose if the MTD is not reached). |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Regulatory T Cells | Biological |
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| Measure | Description | Time Frame |
|---|---|---|
| The frequency of adverse events related to the donor Treg infusions (e.g., grade III-IV aGVHD by the modified Keystone criteria and grade 3 or higher infusional toxicities graded according to the CTCAE v. 4) | For infusion-related toxicities, recipients will be monitored for 1 hour after the Treg infusion. Additional toxicities which may occur during the first 28 days after the Treg infusions will count towards the assessment of safety and tolerability (DLT assessment) (e.g., development of aGVHD). Acute GVHD will be assessed using the modified Keystone criteria on Days 14, 28, 42, 56, 84 and 180 after the Treg infusion (or if the subject is exhibiting signs of aGVHD in-between study visits). Dose limiting toxicities are defined in Section 8. Only toxicities which occur during the first 28 days after the cell infusion will count towards the assessment of DLTs. A dose of Treg will be considered safe if DLTs occur in only 1/6 or 0/3 members of the cohort during the dose-escalation phase. | Up to day 180 |
| Measure | Description | Time Frame |
|---|---|---|
| Change in absolute blood Treg levels | The change in Treg cell counts from baseline to post infusion will be depicted in boxplots of both relative proportion and absolute numbers. Mean log (fold change) and confidence intervals will be calculated. | Baseline to day 42 |
| Improvement in Failure Free Survival (FFS) over cGVHD |
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Inclusion Criteria:
Steroid dependent/refractory cGVHD defined as:
Participants must be receiving systemic glucocorticoid therapy for cGVHD; all immunosuppressive therapy may include but not be limited to tacrolimus, sirolimus, CellCept, cyclosporine, and systemic corticosteroid must be at stable doses for 28 days prior to the first cell infusion
Chronic GVHD manifestations that can be followed on physical or laboratory exam; these include but are not necessarily limited to:
Karnofsky performance status >= 60
Serum creatinine =< 2 mg/dL
Absolute neutrophil count (ANC) > 1 x 10^9/L
Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) =< 20 x upper limit of normal (ULN) or
Total bilirubin =< 10 x ULN
Allogeneic hematopoietic cell transplant recipient
Transfusion independent
Oxygen saturation during exertion is maintained at >= 88% on room air
Does not have clinically significant, symptomatic uncontrolled heart disease (e.g., unstable angina, congestive heart failure, or uncontrolled hypertension)
DONOR: Age >= 18 to =< 75 years old
DONOR: Karnofsky performance status of >= 70% defined by institutional standards
DONOR: Must be the same sibling donor from whom the recipient's blood and marrow graft was collected for the original allogeneic transplant that is human leukocyte antigen (HLA) 7/8 or 8/8 matched at the HLA-A, B,C, DRB1
DONOR: Serologies for human immunodeficiency virus (HIV) antigen (Ag), HIV 1 and HIV 2 antibody (Ab), human T-lymphotropic virus type I (HTLV 1) and HTLV 2 Ab, hepatitis B surface antigen (sAg) or polymerase chain reaction positive (PCR+), or hepatitis C Ab or PCR+, Syphilis (Treponema) screen and HIV 1 and hepatitis C by nucleic acid testing (NAT) have been collected prior to apheresis
DONOR: Female donors of child-bearing potential must have a negative serum or urine beta-human chorionic gonadotropin (HCG) test within three weeks of apheresis
DONOR: Capable of undergoing leukapheresis, have adequate venous access, and be willing to undergo insertion of a central catheter should leukapheresis via peripheral vein be inadequate
DONOR: Donor selection will be in compliance with 21 Code of Federal Regulations (CFR) 1271
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Laura Johnston | Stanford University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Stanford University, School of Medicine | Palo Alto | California | 94305 | United States |
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| ID | Term |
|---|---|
| D006086 | Graft vs Host Disease |
| ID | Term |
|---|---|
| D007154 | Immune System Diseases |
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FFS is defined as the absence of a third line therapy (treatment failure). Estimated by the Kaplan-Meier product-limit method, with standard confidence limits. |
| At day 180 |
| Successful achievement of cGVHD partial response or Complete response by the NIH consensus criteria |
The results will be summarized in tabular form, with confidence intervals for the trinomial proportions. | Up to day 180 |
| The ability to reduce steroid requirements to <0.25 mg/kg-day | At day 180 |
| Change in >7 points on the Lee cGVHD Symptom scale relates to improvement in quality of life | A one-sample t-test will be used on the change in scale from baseline to months 1, 3, and 6. | Baseline to day 180 |