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Selective Depletion of CD45RA+T Cells From Allogeneic Peripheral Blood Stem Cell Grafts for the Prevention of GVHD

A Multi-center Phase II Study of Selective Depletion of CD45RA+ T Cells From Allogeneic Peripheral Blood Stem Cell Grafts for the Prevention of GVHD

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00914940
Enrollment
41
Registered
2009-06-05
Start date
2009-12-17
Completion date
2020-05-26
Last updated
2020-08-20

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

Conditions

Graft Versus Host Disease, Leukemia, Myelodysplastic Syndromes

Keywords

graft versus host disease, adult acute lymphoblastic leukemia in remission, recurrent adult acute lymphoblastic leukemia, childhood acute lymphoblastic leukemia in remission, recurrent childhood acute lymphoblastic leukemia, adult acute myeloid leukemia in remission, recurrent adult acute myeloid leukemia, adult acute myeloid leukemia with 11q23 (MLL) abnormalities, adult acute myeloid leukemia with inv(16)(p13;q22), adult acute myeloid leukemia with t(15;17)(q22;q12), adult acute myeloid leukemia with t(16;16)(p13;q22), adult acute myeloid leukemia with t(8;21)(q22;q22), childhood acute myeloid leukemia in remission, recurrent childhood acute myeloid leukemia, childhood myelodysplastic syndromes, previously treated myelodysplastic syndromes, refractory anemia with excess blasts, de novo myelodysplastic syndromes, secondary myelodysplastic syndromes

Brief summary

RATIONALE: Allogeneic hematopoietic stem cell transplant (HSCT) is a treatment that can cure acute leukemia and myelodysplasia. After giving the patient chemotherapy and total body irradiation to stop the growth of cancer and remove the patient's diseased bone marrow, healthy stem cells from a donor are infused into the patient to replace the patient's bone marrow and make red and white blood cells and platelets. Unfortunately HSCT is often complicated by 'graft versus host disease' (GVHD) in which the transplanted cells from a donor can make an immune response against the body's normal cells and cause tissue damage and severe symptoms. Removing a subset of the donor T cells, called 'naive T cells', before transplant may reduce the frequency and intensity of GVHD. PURPOSE: This phase II trial will determine whether the removal of the naive T cells from donor cells can decrease the rate and severity of graft-vs-host disease while preserving specific immunity against infections in patients with acute leukemia or advanced myelodysplastic syndromes.

Detailed description

OBJECTIVES: Primary * Estimate the probability of grades II-IV acute graft-vs-host disease (GVHD) in patients with acute leukemia or advanced myelodysplastic syndromes treated with CD45RA+ T-cell-depleted allogeneic peripheral blood stem cell transplantation and compare this to relevant historical experience. * Estimate the probability of graft failure in these patients. Secondary * Evaluate immune reconstitution and pathogen-specific T-cell reconstitution in these patients. * Estimate the probability of transplant-related mortality by day 100 in these patients. * Estimate the probability of relapse in these patients. * Estimate the probability and severity of chronic GVHD in these patients. OUTLINE: This is a multicenter study. * Myeloablative conditioning regimen: Patients undergo total body irradiation twice daily for 4 days (Days -10 to -7) Patients also receive thiotepa IV over 4 hours for 2 days (Days -6 and -5) and fludarabine phosphate IV over 30 minutes for 5 days (Days -6 to -2.) * Transplantation: Patients receive a CD34+ enriched allogeneic peripheral blood stem cell (PBSC) product followed by a CD45RA+ T-cell-depleted allogeneic PBSC product on day 0. * Graft-vs-host disease (GVHD) prophylaxis: Patients will receive Tacrolimus as per cohort 1. If the rate of grade II-IV acute GVHD in the first 35 patients is significantly reduced (compared to historical controls), subsequent patients are enrolled in cohort 2. * Cohort 1: Patients receive tacrolimus IV continuously or orally twice daily beginning on day -1 and continuing until day 50, followed by a standard taper in the absence of grade II-IV acute GVHD. * Cohort 2: Patients receive tacrolimus IV continuously or orally twice daily beginning on day -1 and continuing until day 30, followed by a rapid taper in the absence of grade II-IV acute GVHD. Patients are followed actively for at least 1 year post transplant.

Interventions

DRUGFludarabine Phosphate

Fludarabine will be administered in a dose of 25 mg/m2/day IV over approximately 30 minutes for 5 consecutive days (day -6 to -2). The total dose of fludarabine will be 125 mg/m2.

DRUGTacrolimus

Tacrolimus will be administered beginning on day -1 at a dose of 0.03 mg/kg/day by continuous IV infusion. For the first cohort of 35 patients, if there is no evidence of grade II-IV acute GVHD on or prior to day 50, tacrolimus should then be tapered at the rate of approximately 5% of the day 50 dose each week for liquid, and 20% of the day 50 dose per month for capsules. In the second cohort of 25 patients if there is no evidence of grade II GVHD on or prior to day 30, tacrolimus should then be tapered at the rate of approximately 8% of the day 30 dose each week for liquid, and 33% of the day 30 dose per month for capsules.

DRUGThiotepa

Thiotepa will be administered in a dose of 5 mg/kg/day (adjusted body weight) IV over approximately 4 hours for 2 consecutive days (day -6 and day -5).

TBI will be given as 165 cGy fractions twice per day x 4 days - total dose 1320cGy (days -10 to -7).

OTHERMagnetic Affinity Cell Sorting

Device

PROCEDUREPeripheral Blood Stem Cell Transplantation

Patient will undergo a PBSC transplantation

PROCEDUREAllogeneic Hematopoietic Stem Cell Transplantation

Patients who are considered appropriate candidates for allogeneic hematopoietic stem cell transplantation

Patients who are eligible will receive a T Cell-Depleted Hematopoietic Stem Cell Transplantation

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Fred Hutchinson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
14 Years to 55 Years
Healthy volunteers
No

Inclusion criteria

DISEASE CHARACTERISTICS: * Diagnosis of 1 of the following: * Acute lymphocytic leukemia (ALL) or acute myeloid leukemia (AML) in first or subsequent remission * ALL or AML in relapse or primary refractory ALL or AML with a circulating blast count ≤ 10,000/mm\^3 * Refractory anemia with excess blasts (RAEB) (RAEB-1 or RAEB-2) if the patient has received induction chemotherapy within the past 60 days * Appropriate candidate for allogeneic hematopoietic stem cell transplantation (HSCT) * No CNS involvement refractory to intrathecal chemotherapy and/or standard cranial-spinal radiotherapy PATIENT CHARACTERISTICS: * Age 14-55 * Creatinine \< 1.5 mg/dL * Cardiac ejection fraction \> 45% * DLCO corrected \> 60% of predicted * Total bilirubin \< 2 times upper limit of normal (ULN) (unless attributed to Gilbert syndrome) * AST and ALT \< 2 times ULN * Not pregnant or nursing * Fertile patients must use effective contraception during and for 12 months after transplantation * HIV negative * No co-existing disease (other than leukemia or RAEB) that would limit life expectancy to \< 3 months * No uncontrolled infection that, in the opinion of the consulting infectious disease physician, would contraindicate myeloablative HSCT * No other medical condition that would contraindicate HSCT * No known hypersensitivity to tacrolimus PRIOR CONCURRENT THERAPY: * See Disease Characteristics * No prior HSCT * No concurrent participation in other experimental studies for the prevention of graft-vs-host disease DONOR CHARACTERISTICS: * Genotypic or phenotypic HLA-identical related donor * Able to donate peripheral blood stem cells * Age \> 14 years * Applicable to male patients only: No female donors who have previously given birth to a male child or have had a pregnancy beyond the first trimester miscarriage or termination of pregnancy or nursing * No donors who have received blood transfusions * No CD45 Mutation with aberrant CD45RA isoform expression

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHDWithin 360 days of transplantNumber of participants with aGVHD and severity of aGVHD within the first 360 days post-transplant as graded by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0. Acute GVHD is graded by standard criteria, and all suspected cases of acute GVHD will be confirmed histologically by biopsy of an affected organ. The severity of acute GVHD is determined by an assessment of the degree of involvement of the skin, liver, and gastrointestinal tract. Grade I is characterized as mild disease, Grade II as moderate, Grade III as severe (involvement of any organ system), and Grade IV as life-threatening.
Number of Participants Who Did Not Engraft After Receiving a CD45RA+ T Cell Depleted PBSC TransplantUp to 5 years post transplantGraft failure is defined as either a failure to reach an ANC of \>500/uL for 3 consecutive days by day 28 post-transplant, or an irreversible decrease in ANC \<100 after an established donor graft, unless there is a reasonable explanation such as a viral infection or drug effect that may be responsible for a reversible decrease in ANC.

Secondary

MeasureTime frameDescription
Transplant-related Mortality by Day 100Transplant to day 100Number of participants who died due to transplant-related issues within the first 100 days of transplant
Number of Participants Who Have Relapsed Within 5 Years of CD45RA+ T Cell Depleted PBSC TransplantUp to 5 years post transplantRelapse is defined by the presence of malignant cells in marrow, peripheral blood, or extramedullary sites by histopathology. Testing for recurrent malignancy in the blood and bone marrow performed by monitoring the CBC and bone marrow at Day 28, 58, 80, 360, and as needed for suspected relapse.
Number of Participants With Chronic GVHDUp to 5 years post transplantChronic GVHD measured by meeting NIH criteria and treated with immune suppression

Countries

United States

Participant flow

Recruitment details

Participants were recruited based on physician referral at 2 academic medical centers between Dec 2009 and Oct 2014. The first patient was enrolled on December 17, 2009 and the last participant was enrolled in October 2014

Participants by arm

ArmCount
Overall Study Participants
CONDITIONING: Patients receive TBI twice per day on days -10 to -7, then thiotepa IV administered over approximately 4 hours on days -6 and -5, and fludarabine IV administered over 30 minutes on days -6 to -2. DONOR BONE MARROW TRANSPLANTATION: GCSF-mobilized CD34 enriched PBSC and CD45RA depleted cells infused on day 0. POST-TRANSPLANT IMMUNOSUPPRESSION: Ptients receive tacrolimus beginning on day -1 by continuous IV infusion, converting to oral formulation when oral feeding is established. If there is no evidence of grade II-IV acute GVHD prior to day 50, tacrolimus is then tapered.
41
Total41

Withdrawals & dropouts

PeriodReasonFG000
2 Years to 5 Years Post-transplantDeath3
D0 to D100 Post-transplantDeath2
D101 to 2 Years Post-transplantDeath8

Baseline characteristics

CharacteristicOverall Study Participants
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
41 Participants
Age, Continuous37.7 years
Ethnicity (NIH/OMB)
Hispanic or Latino
5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
35 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
3 Participants
Race (NIH/OMB)
Asian
3 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
3 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
Race (NIH/OMB)
White
30 Participants
Region of Enrollment
United States
41 participants
Sex: Female, Male
Female
23 Participants
Sex: Female, Male
Male
18 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
13 / 41
other
Total, other adverse events
41 / 41
serious
Total, serious adverse events
39 / 41

Outcome results

Primary

Number of Participants Who Did Not Engraft After Receiving a CD45RA+ T Cell Depleted PBSC Transplant

Graft failure is defined as either a failure to reach an ANC of \>500/uL for 3 consecutive days by day 28 post-transplant, or an irreversible decrease in ANC \<100 after an established donor graft, unless there is a reasonable explanation such as a viral infection or drug effect that may be responsible for a reversible decrease in ANC.

Time frame: Up to 5 years post transplant

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Overall Study ParticipantsNumber of Participants Who Did Not Engraft After Receiving a CD45RA+ T Cell Depleted PBSC Transplant0 Participants
Primary

Number of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHD

Number of participants with aGVHD and severity of aGVHD within the first 360 days post-transplant as graded by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0. Acute GVHD is graded by standard criteria, and all suspected cases of acute GVHD will be confirmed histologically by biopsy of an affected organ. The severity of acute GVHD is determined by an assessment of the degree of involvement of the skin, liver, and gastrointestinal tract. Grade I is characterized as mild disease, Grade II as moderate, Grade III as severe (involvement of any organ system), and Grade IV as life-threatening.

Time frame: Within 360 days of transplant

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Overall Study ParticipantsNumber of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHDNo acute GVHD11 Participants
Overall Study ParticipantsNumber of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHDGrade I acute GVHD2 Participants
Overall Study ParticipantsNumber of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHDGrade II acute GVHD25 Participants
Overall Study ParticipantsNumber of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHDGrade III acute GVHD3 Participants
Overall Study ParticipantsNumber of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHDGrade IV acute GVHD0 Participants
Overall Study ParticipantsNumber of Participants With Acute Graft-vs-host Disease (GVHD): Grade I-IV, Including Those With no Reportable Acute GVHDSteroid refractory acute GVHD0 Participants
Secondary

Number of Participants Who Have Relapsed Within 5 Years of CD45RA+ T Cell Depleted PBSC Transplant

Relapse is defined by the presence of malignant cells in marrow, peripheral blood, or extramedullary sites by histopathology. Testing for recurrent malignancy in the blood and bone marrow performed by monitoring the CBC and bone marrow at Day 28, 58, 80, 360, and as needed for suspected relapse.

Time frame: Up to 5 years post transplant

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Overall Study ParticipantsNumber of Participants Who Have Relapsed Within 5 Years of CD45RA+ T Cell Depleted PBSC Transplant10 Participants
Secondary

Number of Participants With Chronic GVHD

Chronic GVHD measured by meeting NIH criteria and treated with immune suppression

Time frame: Up to 5 years post transplant

Population: Participants alive and without relapse at D100

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Overall Study ParticipantsNumber of Participants With Chronic GVHDChronic GVHD that meets NIH criteria3 Participants
Overall Study ParticipantsNumber of Participants With Chronic GVHDNo documented chronic GVHD35 Participants
Secondary

Transplant-related Mortality by Day 100

Number of participants who died due to transplant-related issues within the first 100 days of transplant

Time frame: Transplant to day 100

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Overall Study ParticipantsTransplant-related Mortality by Day 1002 Participants

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026