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Yttrium-90 Anti-CD45 Monoclonal Antibody BC8 Followed by Donor Stem Cell Transplant in Treating Patients With High-Risk AML, ALL, or MDS

A Study Evaluating Escalating Doses of 90Y-DOTA-BC8 (Anti-CD45) Antibody Followed by Allogeneic Stem Cell Transplantation for High-Risk Acute Myeloid Leukemia (AML) Acute Lymphoblastic Leukemia (ALL), or Myelodysplastic Syndrome (MDS)

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01300572
Enrollment
16
Registered
2011-02-21
Start date
2012-01-31
Completion date
2019-11-22
Last updated
2019-12-10

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

Conditions

Chronic Myelomonocytic Leukemia, Previously Treated Myelodysplastic Syndrome, Recurrent Adult Acute Lymphoblastic Leukemia, Recurrent Adult Acute Myeloid Leukemia, Refractory Anemia With Excess Blasts, Secondary Acute Myeloid Leukemia

Brief summary

This phase I trial studies the side effects and maximum tolerated dose of yttrium Y 90 anti-cluster of differentiation 45 (CD45) monoclonal antibody BC8 (90Y-BC8) followed by donor stem cell transplant in treating patients with acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), or myelodysplastic syndrome (MDS) that is likely to come back or spread. Giving chemotherapy drugs, such as fludarabine phosphate (FLU), and total-body irradiation (TBI) before a donor peripheral blood stem cell (PBSC) or bone marrow transplant helps stop the growth of cancer or abnormal cells and helps stop the patient's immune system from rejecting the donor's stem cells. Radiolabeled monoclonal antibodies, such as 90Y-BC8, can find cancer cells and carry cancer-killing substances to them without harming normal cells. When the healthy stem cells from a donor are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells. Giving FLU, 90Y-BC8, and TBI before the transplant together with cyclosporine and mycophenolate mofetil after the transplant may stop this from happening.

Detailed description

PRIMARY OBJECTIVES: I. To estimate the maximum tolerated dose (MTD) of radiation delivered via 90Y-DOTA-BC8 (90Y-BC8) when combined with FLU and 2 Gy TBI as a preparative regimen for patients aged \>= 18 with advanced AML, ALL, and high-risk MDS. SECONDARY OBJECTIVES: I. To determine disease response and duration of remission. II. To determine the rates of engraftment and donor chimerism resulting from this combined preparative regimen, and to correlate level of donor chimerism with estimated radiation doses delivered to hematopoietic tissues via antibody. OUTLINE: PREPARATIVE REGIMEN: Patients receive 90Y-BC8 via central line on approximately day -12 and FLU intravenously (IV) over 30 minutes on days -4 to -2. TRANSPLANTATION: Patients undergo TBI followed by allogeneic PBSC or bone marrow transplant on day 0. GRAFT-VS-HOST DISEASE (GVHD) PROPHYLAXIS: Patients receive mycophenolate mofetil orally (PO) or IV every 12 hours on days 0-27 (for patients with related donors) or every 8 hours on days 0-40 with taper to day 96 (for patients with unrelated donors). Patients also receive cyclosporine PO or IV every 12 hours on days -3 to 56 (for patients with related donors) or 100 (for patients with unrelated donors) with taper to day 180. After completion of study treatment, patients are followed up at 6, 9, 12, 18, and 24 months, and then annually thereafter.

Interventions

PROCEDUREAllogeneic Bone Marrow Transplantation

Undergo allogeneic bone marrow transplant

PROCEDUREAllogeneic Hematopoietic Stem Cell Transplantation

Undergo allogeneic PBSC or bone marrow transplant

DRUGCyclosporine

Given PO or IV

DRUGFludarabine Phosphate

Given IV

Given IV (dosimetric dose)

OTHERLaboratory Biomarker Analysis

Correlative studies

DRUGMycophenolate Mofetil

Given PO or IV

PROCEDUREPeripheral Blood Stem Cell Transplantation

Undergo allogeneic PBSC transplant

OTHERPharmacological Study

Correlative studies

RADIATIONTotal-Body Irradiation

Undergo TBI

Given via central line (therapeutic dose)

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
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients must have advanced AML, ALL or high-risk MDS meeting one of the following descriptions: * AML or ALL beyond first remission (i.e., having relapsed at least one time after achieving remission in response to a treatment regimen) * AML or ALL representing primary refractory disease (i.e., having failed to achieve remission at any time following one or more prior treatment regimens) * AML evolved from myelodysplastic or myeloproliferative syndromes; or * MDS expressed as refractory anemia with excess blasts (RAEB) or chronic myelomonocytic leukemia (CMML) by French-American-British (FAB) criteria * Patients not in remission must have CD45-expressing leukemic blasts; patients in remission do not require phenotyping and may have leukemia previously documented to be CD45 negative (because in remission patients, virtually all antibody binding is to non-malignant cells which make up \>= 95% of nucleated cells in the marrow) * Patients should have a circulating blast count of less than 10,000/mm\^3 (control with hydroxyurea or similar agent is allowed) * Patients must have an estimated creatinine clearance greater than 50/ml per minute (serum creatinine value must be within 28 days prior to registration) * Bilirubin \< 2 times the upper limit of normal * Aspartate aminotransferase (AST) and alanine transaminase (ALT) \< 2 times the upper limit of normal * Eastern Cooperative Oncology Group (ECOG) =\< 2 or Karnofsky \>= 70 * Patients must have an expected survival of \> 60 days and must be free of active infection * Patients must have an human leukocyte antigen (HLA)-identical sibling donor or an HLA-matched unrelated donor who meets standard Seattle Cancer Care Alliance (SCCA) and/or National Marrow Donor Program (NMDP) or other donor center criteria for PBSC or bone marrow donation, as follows: * Related donor: related to the patient and genotypically or phenotypically identical for HLA-A, B, C, DRB1 and DQB1; phenotypic identity must be confirmed by high-resolution typing * Unrelated donor: * Matched for HLA-A, B, C, DRB1 and DQB1 by high resolution typing; OR mismatched for a single allele without antigen mismatching at HLA-A, B or C as defined by high resolution typing but otherwise matched for HLA-A, B, C, DRB1 and DQB1 by high resolution typing * Doors are excluded when preexisting immunoreactivity is identified that would jeopardize donor hematopoietic cell engraftment; this determination is based on the standard practice of the individual institution; the recommended procedure for patients with 10 of 10 HLA allele level (phenotypic) match is to obtain panel reactive antibody (PRA) screens to class I and class II antigens for all patients before hematopoietic cell transplant (HCT); if the PRA shows \> 10% activity, then flow cytometric or B and T cell cytotoxic cross matches should be obtained; the donor should be excluded if any of the cytotoxic cross match assays are positive; for those patients with and HLA class I allele mismatch, flow cytometric or B and T cell cytotoxic cross matches should be obtained regardless of the PRA results; a positive anti-donor cytotoxic crossmatch is an absolute donor exclusion * Patient and donor pairs homozygous at a mismatched allele in the graft rejection vector are considered a two-allele mismatch; i.e., the patient is A\*0101 and the donor is A\*0102, and this type of mismatch is not allowed * DONOR: Donors must meet HLA matching criteria and standard SCCA and/or National Marrow Donor Program (NMDP) or other donor center criteria for PBSC or bone marrow donation

Exclusion criteria

* Circulating human anti-mouse antibody (HAMA) * Prior radiation to maximally tolerated levels to any critical normal organ, or \> 20 Gy prior radiation to large areas of the bone marrow (e.g., external radiation therapy to whole pelvis) * Patients may not have symptomatic coronary artery disease and may not be on cardiac medications for anti-arrhythmic or inotropic effects * Left ventricular ejection fraction \< 35% * Corrected diffusion lung capacity of carbon monoxide (DLCO) \< 35% or receiving supplemental continuous oxygen * Liver abnormalities: fulminant liver failure, cirrhosis of the liver with evidence of portal hypertension, alcoholic hepatitis, esophageal varices, hepatic encephalopathy, uncorrectable hepatic synthetic dysfunction as evidenced by prolongation of the prothrombin time, ascites related to portal hypertension, bacterial or fungal liver abscess, biliary obstruction, chronic viral hepatitis, or symptomatic biliary disease * Patients who are known to be seropositive for human immunodeficiency virus (HIV) * Perceived inability to tolerate diagnostic or therapeutic procedures * Active central nervous system (CNS) leukemia at time of treatment * Women of childbearing potential who are pregnant (beta-human chorionic gonadotropin positive \[HCG+\]) or breast feeding * Fertile men and women unwilling to use contraceptives during and for 12 months post-transplant * Inability to understand or give an informed consent

Design outcomes

Primary

MeasureTime frameDescription
The MTD of Radiation Delivered Via 90Y-DOTA-BC8 When Combined With FLU and 2 Gy TBI as a Preparative Regimen for Patients Aged ≥ 18 With Advanced AML, ALL, and High-risk MDS.Within the first 30 days following transplantThe MTD will be defined as the dose that is associated with a true DLT rate of 25%. The highest dose achieved was 28 Gy but none of the patients experienced a DLT. Thus, the MTD was not reached.

Secondary

MeasureTime frameDescription
Disease-free Survival100 days after transplantNumber of study participants who are alive and remains in complete remission after transplant.
Duration of Remission1 yearMedian time to relapse after achieving complete remission (CR). CR is defined as complete resolution of all signs of myelodysplasia or leukemia for at least 4 weeks with all of the following: 1. Normal bone marrow with blasts \<5% with normal cellularity, normal megakaryopoiesis, \> 15% erythropoiesis and \> 25% granulocytopoiesis 2. Normalization of blood counts (no blasts, platelets \> 100000/mm3, granulocytes \>1500/mm3) 3. No extramedullary disease. Relapse Criteria: 1. After CR: \>5% blasts in the bone marrow and/or peripheral blood 2. After partial remission (PR): increase of blasts cells in the marrow to \>50% of those during PR 3. Extramedullary disease confirmed cytologically or histologically.
Estimation of Absorbed Radiation Doses to Normal Organs, Marrow and TumorApproximately day -20 to day -12 prior to transplantThe amount of energy absorbed per unit weight of the organ or tissue is called absorbed dose and is expressed in units of gray (Gy). One gray dose is equivalent to one joule radiation energy absorbed per kilogram of organ or tissue weight.
Overall SurvivalUp to 5 yearsNumber of participants who are still alive after transplant with or without disease.
Achievement of Remission4 weeks after transplantNumber of participants who are in complete remission (CR) 4 weeks after transplant. CR is defined as complete resolution of all signs of myelodysplasia or leukemia for at least 4 weeks with all of the following: 1. Normal bone marrow with blasts \<5% with normal cellularity, normal megakaryopoiesis, \> 15% erythropoiesis and \> 25% granulocytopoiesis 2. Normalization of blood counts (no blasts, platelets \> 100000/mm3, granulocytes \>1500/mm3) 3. No extramedullary disease.
Rates of Donor ChimerismUp to 100 days post-transplantNumber of participants who has 100% donor chimerism within 100 days after transplant
Rates of EngraftmentUp to 84 days post-transplantAverage number of days to ANC \>= 500 after transplant
Rates of Non-relapse MortalityWithin the first 100 days following transplantTransplant-related deaths within 100 days after transplant
Rates of Acute GvHDUp to 84 days post-transplantNumber of participants who developed acute GVHD post-transplant, aGVHD stages: Skin: a maculopapular eruption involving \< 25% BSA a maculopapular eruption involving 25 - 50% BSA generalized erythroderma generalized erythroderma with bullous formation and often with desquamation Liver: bilirubin 2.0 - 3.0 mg/100 mL bilirubin 3 - 5.9 mg/100 mL bilirubin 6 - 14.9 mg/100 mL bilirubin \> 15 mg/100 mL Gut: Diarrhea is graded 1 - 4 in severity. Nausea and vomiting and/or anorexia caused by GVHD is assigned as 1 in severity. The severity of gut involvement is assigned to the most severe involvement noted. Patients with visible bloody diarrhea are at least stage 2 gut and grade 3 overall. aGVHD Grades Grade III: Stage 2 - 4 gut involvement and/or stage 2 - 4 liver involvement Grade IV: Pattern and severity of GVHD similar to grade 3 with extreme constitutional symptoms or death

Countries

United States

Participant flow

Recruitment details

This protocol is open to participants age 18 and above, of either gender and any race/ethnicity. The study is looking at the use of Y-90-DOTA-BC8 in conjunction with a standard reduced-intensity transplant regimen.

Participants by arm

ArmCount
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)
Study participants will receive an infusion of 0.5 mg/kg of ideal body weight of DOTA-BC8 trace labeled with \ 5-10 mCi of Indium-111 to evaluate biodistribution and calculate the radiation absorbed doses to major organs and the whole body. The subsequent therapy infusion of Yttrium-90-DOTA-BC8 will deliver an amount of Yttrium-90 calculated not to exceed the target dose to the critical normal organ receiving the highest radiation dose. The therapy dose will be administered on approximately day -12 of the preparative regimen, which will typically be approximately 1 to 2 weeks after the biodistribution dose.
16
Total16

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyHAMA + post dosimetry1

Baseline characteristics

CharacteristicTreatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
8 Participants
Age, Categorical
Between 18 and 65 years
8 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
16 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 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
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
16 Participants
Sex: Female, Male
Female
8 Participants
Sex: Female, Male
Male
8 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
5 / 15
other
Total, other adverse events
11 / 15
serious
Total, serious adverse events
9 / 15

Outcome results

Primary

The MTD of Radiation Delivered Via 90Y-DOTA-BC8 When Combined With FLU and 2 Gy TBI as a Preparative Regimen for Patients Aged ≥ 18 With Advanced AML, ALL, and High-risk MDS.

The MTD will be defined as the dose that is associated with a true DLT rate of 25%. The highest dose achieved was 28 Gy but none of the patients experienced a DLT. Thus, the MTD was not reached.

Time frame: Within the first 30 days following transplant

Population: Study participants who completed the study regimen.

ArmMeasureValue (NUMBER)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)The MTD of Radiation Delivered Via 90Y-DOTA-BC8 When Combined With FLU and 2 Gy TBI as a Preparative Regimen for Patients Aged ≥ 18 With Advanced AML, ALL, and High-risk MDS.28 Gy
Secondary

Achievement of Remission

Number of participants who are in complete remission (CR) 4 weeks after transplant. CR is defined as complete resolution of all signs of myelodysplasia or leukemia for at least 4 weeks with all of the following: 1. Normal bone marrow with blasts \<5% with normal cellularity, normal megakaryopoiesis, \> 15% erythropoiesis and \> 25% granulocytopoiesis 2. Normalization of blood counts (no blasts, platelets \> 100000/mm3, granulocytes \>1500/mm3) 3. No extramedullary disease.

Time frame: 4 weeks after transplant

Population: Study participants who completed the study regimen

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Achievement of Remission13 Participants
Secondary

Disease-free Survival

Number of study participants who are alive and remains in complete remission after transplant.

Time frame: 100 days after transplant

Population: Study participants who completed study regimen and in CR after transplant.

ArmMeasureValue (NUMBER)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Disease-free Survival7 participants
Secondary

Duration of Remission

Median time to relapse after achieving complete remission (CR). CR is defined as complete resolution of all signs of myelodysplasia or leukemia for at least 4 weeks with all of the following: 1. Normal bone marrow with blasts \<5% with normal cellularity, normal megakaryopoiesis, \> 15% erythropoiesis and \> 25% granulocytopoiesis 2. Normalization of blood counts (no blasts, platelets \> 100000/mm3, granulocytes \>1500/mm3) 3. No extramedullary disease. Relapse Criteria: 1. After CR: \>5% blasts in the bone marrow and/or peripheral blood 2. After partial remission (PR): increase of blasts cells in the marrow to \>50% of those during PR 3. Extramedullary disease confirmed cytologically or histologically.

Time frame: 1 year

Population: Study participants who relapsed after achieving complete remission after transplant.

ArmMeasureValue (MEDIAN)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Duration of Remission213 days
Secondary

Estimation of Absorbed Radiation Doses to Normal Organs, Marrow and Tumor

The amount of energy absorbed per unit weight of the organ or tissue is called absorbed dose and is expressed in units of gray (Gy). One gray dose is equivalent to one joule radiation energy absorbed per kilogram of organ or tissue weight.

Time frame: Approximately day -20 to day -12 prior to transplant

Population: All study participants who completed the study regimen.

ArmMeasureGroupValue (MEAN)Dispersion
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Estimation of Absorbed Radiation Doses to Normal Organs, Marrow and TumorAverage absorbed dose to the marrow11.4 GyStandard Deviation 9.2
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Estimation of Absorbed Radiation Doses to Normal Organs, Marrow and TumorAverage absorbed dose to the liver17.2 GyStandard Deviation 6.8
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Estimation of Absorbed Radiation Doses to Normal Organs, Marrow and TumorAverage abosorbed dose total body3.1 GyStandard Deviation 5.7
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Estimation of Absorbed Radiation Doses to Normal Organs, Marrow and TumorAverage absorbed dose to the spleen70 GyStandard Deviation 43
Secondary

Overall Survival

Number of participants who are still alive after transplant with or without disease.

Time frame: Up to 5 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Overall Survival7 Participants
Secondary

Rates of Acute GvHD

Number of participants who developed acute GVHD post-transplant, aGVHD stages: Skin: a maculopapular eruption involving \< 25% BSA a maculopapular eruption involving 25 - 50% BSA generalized erythroderma generalized erythroderma with bullous formation and often with desquamation Liver: bilirubin 2.0 - 3.0 mg/100 mL bilirubin 3 - 5.9 mg/100 mL bilirubin 6 - 14.9 mg/100 mL bilirubin \> 15 mg/100 mL Gut: Diarrhea is graded 1 - 4 in severity. Nausea and vomiting and/or anorexia caused by GVHD is assigned as 1 in severity. The severity of gut involvement is assigned to the most severe involvement noted. Patients with visible bloody diarrhea are at least stage 2 gut and grade 3 overall. aGVHD Grades Grade III: Stage 2 - 4 gut involvement and/or stage 2 - 4 liver involvement Grade IV: Pattern and severity of GVHD similar to grade 3 with extreme constitutional symptoms or death

Time frame: Up to 84 days post-transplant

Population: Overall number of participants analyzed is 14 because one patient died prior to d+84 after transplant.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Acute GvHDGrade 0 acute GVHD4 Participants
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Acute GvHDGrade I acute GVHD1 Participants
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Acute GvHDGrade II acute GVHD6 Participants
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Acute GvHDGrade III acute GVHD2 Participants
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Acute GvHDGrade IV acute GVHD1 Participants
Secondary

Rates of Donor Chimerism

Number of participants who has 100% donor chimerism within 100 days after transplant

Time frame: Up to 100 days post-transplant

Population: Overall number of participants analyzed is 14 because one patient died prior to d+84 after transplant.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Donor Chimerism14 Participants
Secondary

Rates of Engraftment

Average number of days to ANC \>= 500 after transplant

Time frame: Up to 84 days post-transplant

Population: Study participants with an ANC \<= to 500 after transplant

ArmMeasureValue (MEAN)Dispersion
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Engraftment16 daysStandard Deviation 6
Secondary

Rates of Non-relapse Mortality

Transplant-related deaths within 100 days after transplant

Time frame: Within the first 100 days following transplant

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Non-relapse MortalitySevere refractory GVHD1 Participants
Treatment (90Y-BC8, Allogeneic PBSC or Bone Marrow Transplant)Rates of Non-relapse MortalityBacterial infection1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 23, 2026