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Pentostatin and Alemtuzumab as a Preparative Regimen for Allogeneic Peripheral Blood Stem Cell Transplantation

Phase II Related or Unrelated Allogeneic Hematopoietic Cell Transplantation for High-Risk Malignancies, Using a Preparative Regimen of Pentostatin (Nipent®) and Alemtuzumab (Campath®)

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00698685
Enrollment
14
Registered
2008-06-17
Start date
2006-01-23
Completion date
2011-04-26
Last updated
2017-03-31

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

Conditions

Carcinoma, Renal Cell, Hematologic Neoplasms, Hodgkin's Disease, Leukemia, Lymphoma, Multiple Myeloma

Keywords

Allogeneic Hematopoietic Cell Transplantation, Preparative Regimen, Pentostatin, Alemtuzumab, Hodgkin Disease and Lymphoma, non-Hodgkin, leukemia, myeloid, acute, leukemia, lymphocytic, acute, leukemia, myeloid, chronic, leukemia, lymphocytic, chronic, Multiple Myeloma, Myelodysplastic Syndromes, Carcinoma, Renal Cell

Brief summary

This study tests the hypothesis that a purely immunosuppressive preparative regimen allows engraftment of related or unrelated allogeneic hematopoietic stem cells in subjects with high-risk malignancies, without causing the post-transplant myelosuppression (e.g., neutropenia, thrombocytopenia) that occurs with currently used reduced-intensity (nonmyeloablative) preparative regimens. This study incorporates both safety and efficacy endpoints and evaluates a novel preparative regimen of alemtuzumab plus continuous-infusion pentostatin, two immunosuppressive agents with different mechanisms of action, in recipients of related or unrelated allogeneic hematopoietic stem cell transplantation.

Detailed description

Primary Objectives of the study: * To determine the efficacy of a preparative regimen of pentostatin and alemtuzumab plus related or unrelated allogeneic peripheral blood stem cell transplantation (PBSCT) in inducing durable donor lymphohematopoietic cell chimerism (defined as at least 50% donor cells in the peripheral blood) by 100 days after PBSCT (day +100) in subjects with high-risk malignancies who are at high risk for morbidity and mortality with conventional intensive pre-transplant conditioning regimens. * To determine the safety of a preparative regimen of pentostatin and alemtuzumab plus related or unrelated allogeneic PBSCT, as measured by the non-relapse mortality at day +100 in the study subject population.

Interventions

DRUGPentostatin

Days - 8 through -6: pentostatin 4 mg/m2/24 hr as a continuous intravenous infusion (CIVI) (total cumulative dose, 12 mg/m2 over 3 days)

BIOLOGICALAlemtuzumab

Days - 5 through - 1: alemtuzumab 20 mg per dose intravenously over 8 hours daily for 5 doses (total cumulative dose, 100 mg)

PROCEDUREAllogeneic hematopoietic stem cell transplantation

Infusion of related or unrelated donor peripheral blood progenitor cells on day 0.

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
University of Arizona
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

One of these diagnoses: * Acute myeloid leukemia in complete or partial remission * Acute lymphocytic leukemia in complete or partial remission * Chronic myeloid leukemia in first or subsequent chronic phase or accelerated phase * Chronic lymphocytic leukemia that has recurred or failed after at least one course of front-line therapy * Hodgkin's disease or non-Hodgkin's lymphoma that has failed front-line therapy, is in second or subsequent remission, or is in chemosensitive relapse * Multiple myeloma that is in complete or partial remission or in chemosensitive relapse * Myelodysplastic Syndrome classified as intermediate-2 or high risk according to International Prognostic Scoring System * Metastatic renal cell carcinoma that has failed at least one previous front-line chemotherapy and/or biological therapy regimen and that is radiographically detectable and evaluable * Treatment with at least one previous course of chemotherapy or biological therapy for the malignancy for which allogeneic PBPCT is being considered (i.e., a subject cannot be enrolled on this study for initial treatment of a malignancy). AND at least one of the following: * Age 50 years or older. * Previous transplant with autologous or allogeneic hematopoietic cells (peripheral blood, bone marrow, or placental blood). * High-risk status of hematologic malignancy, i.e., not in first complete remission or first chronic phase. * Presence of other medical condition that could place subject at unacceptably high risk of regimen-related mortality such as documented chronic bronchitis or emphysema; decreased cardiac ejection fraction (but with ejection fraction at least 30%), or history of coronary artery disease; renal insufficiency (but with creatinine clearance at least 30 mL/min); hepatic cirrhosis (but with normal hepatic synthetic function); or documented or presumed invasive fungal infection requiring treatment with intravenous antifungal agent(s).

Exclusion criteria

* Eligibility for another clinical therapeutic protocol or standard-of-care treatment that offers higher probability of cure or long-term control of subject's malignancy. * Progressive Hodgkin's disease, non-Hodgkin's lymphoma, Hodgkin disease or multiple myeloma that is refractory to salvage chemotherapy. * Acute leukemia (AML or ALL) in relapse, CML in blast phase/blast crisis, or MDS with greater than 30% marrow involvement (MDS-AML). Subjects with these disease characteristics may be considered for this study if complete or partial remissions (CRs or PRs) occur after salvage chemotherapy. * Severe organ dysfunction, such as: cardiac ejection fraction below 30% or symptomatic ischemic cardiac disease; creatinine clearance below 30 mL/min; carbon monoxide diffusing capacity (DLCO) below 35% and/or need for supplemental oxygen; severe hepatic cirrhosis with ascites and/or varices; hepatic dysfunction associated with abnormal synthetic function (e.g., coagulopathy) and/or bilirubin greater than two times upper limit of normal and/or transaminases (AST or ALT) above four times upper limit of normal. * Untreated or progressive central nervous system involvement by malignancy * Subject is pregnant or breast-feeding. * Karnofsky score below 50 * Seropositivity for human immunodeficiency virus (HIV). * Life expectancy less than 12 weeks with conventional treatments. * For subjects who are fertile, refusal to practice contraception upon entering this study and for at least 12 months after PBPCT or after cessation of immunosuppressive treatments (e.g., cyclosporine), whichever occurs later. * Failure to obtain at least 5.0 x 106 allogeneic donor CD34+ cells per kg of recipient weight in PBPC product.

Design outcomes

Primary

MeasureTime frameDescription
Actuarial Probability of Donor Hematopoietic Engraftment (Defined as at Least 50% Donor DNA in Bone Marrow at Day 100).Day 100 after transplant.The number of participants with donor hematopoietic engraftment at day 100 is reported in the data table, and the actuarial probability is calculated using the Kaplan-Meier product-limit estimate statistic, as reported in the statistical analysis section below.
Non-relapse Mortality at or Before Day 100Day 100 after transplantThe primary safety outcome is indicated by the number of participants who died at or before Day 100 after transplant for any reason other than relapse of disease (Leukemia, Lymphoma, Hodgkin's disease, Hematologic Neoplasms, Multiple Myeloma, Renal Cell Carcinoma).

Countries

United States

Participant flow

Recruitment details

Following University of Arizona IRB review and approval, the study opened to accrual on November 2005 at the Arizona Cancer Center clinic and University Medical Center sites \[Tucson, Arizona\].

Pre-assignment details

Following consent process, subjects who consented to participate were screened per the selection criteria in the study.

Participants by arm

ArmCount
Preparative Regimen of Pentostatin and Alemtuzumab
Pentostatin and Alemtuzumab as a Preparative Regimen for Allogeneic \[related or unrelated\] Hematopoietic SCT. Pentostatin: 4 mg/m2/24 hour IV continuously over 72 hours on days -8 to -6. Alemtuzumab: 20 mg per dose IV over 8 hours on days -5 to -1. Patients then received infusion of related or unrelated donor peripheral blood progenitor cells on day 0. Patients also receive cyclosporine IV continuously beginning on day -2, continuing (IV or orally) until day 100, followed by a taper.
14
Total14

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyOff study pre transplant by clinic MD1
Overall StudySister withdrew as donor1

Baseline characteristics

CharacteristicPreparative Regimen of Pentostatin and Alemtuzumab
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
3 Participants
Age, Categorical
Between 18 and 65 years
11 Participants
Region of Enrollment
United States
14 participants
Sex: Female, Male
Female
5 Participants
Sex: Female, Male
Male
9 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
13 / 13
serious
Total, serious adverse events
8 / 13

Outcome results

Primary

Actuarial Probability of Donor Hematopoietic Engraftment (Defined as at Least 50% Donor DNA in Bone Marrow at Day 100).

The number of participants with donor hematopoietic engraftment at day 100 is reported in the data table, and the actuarial probability is calculated using the Kaplan-Meier product-limit estimate statistic, as reported in the statistical analysis section below.

Time frame: Day 100 after transplant.

Population: All participants who completed treatment and underwent allogeneic transplant.

ArmMeasureValue (NUMBER)
Preparative Regimen of Pentostatin and AlemtuzumabActuarial Probability of Donor Hematopoietic Engraftment (Defined as at Least 50% Donor DNA in Bone Marrow at Day 100).4 participants
Primary

Non-relapse Mortality at or Before Day 100

The primary safety outcome is indicated by the number of participants who died at or before Day 100 after transplant for any reason other than relapse of disease (Leukemia, Lymphoma, Hodgkin's disease, Hematologic Neoplasms, Multiple Myeloma, Renal Cell Carcinoma).

Time frame: Day 100 after transplant

Population: All participants who received at least 1 day of treatment.

ArmMeasureValue (NUMBER)
Preparative Regimen of Pentostatin and AlemtuzumabNon-relapse Mortality at or Before Day 1003 Participants

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