EphB4-HSA Fusion Protein and Cytarabine /or Liposomal Vincristine in Patients With Recurrent or Refractory Acute Leukemia
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ClinicalTrials.gov Identifier: NCT03519984 |
Recruitment Status :
Terminated
(Study drug supply issue)
First Posted : May 9, 2018
Last Update Posted : November 30, 2021
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Condition or disease | Intervention/treatment | Phase |
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Acute Myeloid Leukemia Arising From Previous Myelodysplastic Syndrome Blasts 5 Percent or More of Bone Marrow Nucleated Cells Myelodysplastic/Myeloproliferative Neoplasm Philadelphia Chromosome Positive Recurrent Acute Lymphoblastic Leukemia Recurrent Adult Acute Myeloid Leukemia Refractory Acute Lymphoblastic Leukemia Refractory Acute Myeloid Leukemia Refractory Chronic Myelogenous Leukemia, BCR-ABL1 Positive Secondary Acute Myeloid Leukemia T Acute Lymphoblastic Leukemia | Drug: Cytarabine Other: Laboratory Biomarker Analysis Biological: Recombinant EphB4-HSA Fusion Protein Drug: Vincristine Liposomal | Phase 1 |

Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 3 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase I Dose Escalation Study With Expansion to Evaluate the Safety of SEPHB4-HSA in Combination With Cytarabine or Liposomal Vincristine in Patients With Relapsed or Refractory Acute Leukemia |
Actual Study Start Date : | May 9, 2018 |
Actual Primary Completion Date : | November 24, 2020 |
Actual Study Completion Date : | November 24, 2020 |

Arm | Intervention/treatment |
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Experimental: Arm A (sEPHB4-HSA, cytarabine)
Participants receive recombinant EphB4-HSA fusion protein IV over 60 minutes on days 1, 8, 15, and 22 and cytarabine IV over 4 hours on days 1-5. Treatment repeats every 28 days for up to 2 courses in the absence of disease progression or unacceptable toxicity.
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Drug: Cytarabine
Given IV
Other Names:
Other: Laboratory Biomarker Analysis Correlative studies Biological: Recombinant EphB4-HSA Fusion Protein Given IV
Other Name: sEphB4-HSA |
Experimental: Arm B (sEPHB4-HSA, vincristine liposomal)
Participants receive recombinant EphB4-HSA fusion protein IV over 60 minutes on days 1, 8, 15, and 22 and vincristine liposomal IV over 60 minutes on days 1, 8, 15, and 22. Treatment repeats every 28 days for up to 2 courses in the absence of disease progression or unacceptable toxicity.
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Other: Laboratory Biomarker Analysis
Correlative studies Biological: Recombinant EphB4-HSA Fusion Protein Given IV
Other Name: sEphB4-HSA Drug: Vincristine Liposomal Given IV
Other Names:
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- Incidence of adverse events [ Time Frame: Up to 24 months ]Will be assessed by Common Terminology Criteria for Adverse Events (CTCAE) v4.03 and summarized for each course separately.
- Best clinical response in the blood and bone marrow observed at anytime during single agent treatment with recombinant EphB4-HSA fusion protein alone [ Time Frame: Up to 24 months ]
Best clinical response defined as complete remission (CR) + complete remission with incomplete blood count recovery (CRi) + partial remission (PR) + partial remission with incomplete blood count recovery (PRi).
CR defined as Neutrophils: >1,000/µL; Platelets: >100,000/µL; Bone Marrow Blasts: <5% with spicules, no Auer rods; Other: Transfusion independent, no extra medullary disease.
CRi defined as Neutrophils: <1,000/µL; Platelets: <100,000/µL; Bone Marrow Blasts: <5%; Other: Either neutrophils or platelets not recovered, no extra medullary disease.
PR defined as Neutrophils: >1,000/µL; Platelets: >100,000/µL; Bone Marrow Blasts: decrease to 5-25 and = > 50% decrease from start.
PRi defined as Neutrophils: <1,000/µL; Platelets: <100,000/µL; Bone Marrow Blasts: decrease to 5-25 and = > 50% decrease from start.
- Complete remission (CR) and complete remission with incomplete blood count recovery (CRi) observed at anytime for the combination with cytarabine or liposomal vincristine [ Time Frame: Up to 24 months ]
CR defined as Neutrophils: >1,000/µL; Platelets: >100,000/µL; Bone Marrow Blasts: <5% with spicules, no Auer rods; Other: Transfusion independent, no extra medullary disease.
CRi defined as Neutrophils: <1,000/µL; Platelets: <100,000/µL; Bone Marrow Blasts: <5%; Other: Either neutrophils or platelets not recovered, no extra medullary disease.
- Progression-free survival (PFS) [ Time Frame: Up to 24 months ]Will be calculated for all patients who achieve a CR or CRi from first documentation ofCR or CRi to recurrence or death.

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Confirmed diagnosis of relapsed or refractory acute leukemia (acute myeloid leukemia, acute lymphoblastic leukemia, blast crisis of chronic myeloid leukemia [CML], secondary AML from prior myelodysplastic syndrome [MDS] / myeloproliferative neoplasm [MPN]); minimum of 5% blasts in the bone marrow or 10% blasts in circulation
- Patients with Philadelphia chromosome (Ph)+ ALL or blast crisis of CML must be refractory (not intolerant) to at least 2 second/third generation ABL kinase inhibitors (TKI)
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For AML: patients must belong to one of the following ?high risk? categories:
- Primary induction failure (PIF) as defined by failure to achieve at least a 50% reduction in bone marrow blasts after one cycle of high intensity, anthracycline containing induction regimen or failure to achieve complete response (CR)/complete remission with incomplete blood count recovery (CRi) after two cycles of high intensity chemotherapy
- First early relapse as defined by an initial remission duration of fewer than 6 months
- Second or subsequent relapse regardless of remission duration, or
- Relapse after allogeneic or autologous stem cell transplantation (first relapse after stem cell transplant would be eligible, regardless of prior duration of remission)
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Patients with MDS who transform to AML while on hypomethylator agents or patients with AML who progress on hypomethylator agents could be considered for arm A of this trial if
- They choose not to be treated on or are ineligible for the investigator's competing trial of sEPHB4-HSA + hypomethylator (9L-16-6)
- They are appropriate for high dose cytarabine treatment
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For ALL: patients must belong to one of the following ?high risk? categories:
- Primary refractory as defined by failure to achieve CR after induction and at least one salvage therapy
- Second or subsequent relapse
- Relapse after allogeneic or autologous stem cell transplantation (requirement for second relapse does not apply post-transplant)
- All variants of ALL including T-ALL, B / myeloid, lymphoblastic leukemia lymphoma are eligible
- Patients with myeloid diseases (AML, myeloid blast crisis of CML) will be eligible for arm A with cytarabine; patients with lymphoid diseases (ALL, lymphoid blast crisis of CML) will be eligible for arm B with liposomal vincristine; patients with leukemia of ambiguous lineage or bi-phenotypic leukemia (e.g. B/myeloid) may be treated on either arm A or B, at discretion of treating physician
- Performance status Eastern Cooperative Oncology Group (ECOG) 0 to 2
- Life expectancy > 2 months
- Total bilirubin ? 3 X upper limit of normal (ULN), unless attributable to Gilbert syndrome
- Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]) / alanine transaminase [ALT] (serum glutamic pyruvic transaminase [SPGT]) ? 5 X institutional upper limit of normal
- Creatinine: glomerular filtration rate (GFR) > 30 as calculated by modification of diet in renal disease (MDRD) equation
- Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 90 days following completion of therapy; should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately
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A female of child-bearing potential is any woman (regardless of sexual orientation, having undergone a tubal ligation, or remaining celibate by choice) who meets the following criteria:
- Has not undergone a hysterectomy or bilateral oophorectomy; or
- Has not been naturally postmenopausal for at least 12 consecutive months (i.e., has had menses at any time in the preceding 12 consecutive months)
- No major surgery within 4 weeks of first dose of sEPHB4
- Peripheral blood blast count ? 30,000 at time of eligibility assessment (within 7 days of start of therapy); blast counts that increase beyond 30,000 after a patient is deemed eligible will not disqualify the patient
- For subjects with prior allogeneic stem cell transplant, no evidence of active graft-versus host disease (GVHD), and must be ? 2 weeks off immunosuppressive therapy
- Ability to understand and the willingness to sign a written informed consent
Exclusion Criteria:
- Diagnosis of acute promyelocytic leukemia (M3 classification)
- ALL patient refractory to their first induction only or their first relapse, will be excluded; they must be refractory to at least one salvage therapy, or relapse after first salvage, to be eligible
- ALL patients refractory to liposomal vincristine as defined by progression while on therapy or relapse within 3 months of completion of therapy with liposomal vincristine
- Prior malignancy requiring therapy within the last 12 months (excluding non-melanoma skin cancer); hormone therapy for prostate cancer or adjuvant endocrine therapy for breast cancer would not be excluded
- Patient is receiving other investigational agents
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Active central nervous system (CNS) disease
- Definition: any patient receiving active CNS therapy (defined as more than 1 intrathecal treatment per week or current radiation therapy to brain); if patient has a history of CNS disease: must have cerebrospinal fluid (CSF) sampling within 28 days of enrollment that is negative for leukemia; intrathecal chemotherapy for patients without active CNS disease is allowed (e.g., ongoing primary or secondary prophylaxis for patients who cleared the CSF prior to study enrollment); CSF sample is not required for enrollment for patients with no history of CNS disease
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Chemotherapy within 2 weeks of first dose of sEPHB4-HSA (minimum of 6 weeks for nitrosoureas and 8 weeks for bone marrow transplantation) with the following exceptions:
- Hydroxyurea allowed prior to, and up to day +5 of cycle 0 of treatment (max 100 mg/kg/day)
- Corticosteroids allowed until day -3 (max dexamethasone 20mg/day)
- Maintenance chemotherapy for ALL allowed one week prior to start of treatment (e.g., POMP)
- Grade ? 2 toxicity (other than alopecia) continuing from prior anticancer therapy, including radiation
- Patients with Charcot-Marie-Tooth disease or other demyelinating diseases are excluded from the liposomal vincristine containing arm
- New York Heart Association class 3 or 4 heart failure; myocardial infarction, acute coronary syndrome, diabetes mellitus with ketoacidosis, or chronic obstructive pulmonary disease (COPD) requiring hospitalization in the preceding 6 months; or any other intercurrent medical condition that contraindicates treatment with sEPHB4-HSA or places the patient at undue risk for treatment related complications
- Uncontrolled active systemic infections
- Known history of human immunodeficiency virus (HIV) or active infection with hepatitis C virus (HCV) or hepatitis B virus (HBV); patients with HBV and/or HCV sero-positivity only will be eligible, if nucleic acid amplification testing (NAT) is negative
- Warfarin (any dose) or full-dose anticoagulation with other agents (low molecular weight heparin, antithrombin agents, anti-platelet agents and full dose aspirin) within 7 days prior to first dose of study drug; patients on prophylactic doses of low-molecular weight heparin are allowed

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03519984
United States, California | |
USC / Norris Comprehensive Cancer Center | |
Los Angeles, California, United States, 90033 |
Principal Investigator: | Akil Merchant, MD | University of Southern California |
Responsible Party: | University of Southern California |
ClinicalTrials.gov Identifier: | NCT03519984 |
Other Study ID Numbers: |
9L-17-15 NCI-2018-00680 ( Registry Identifier: CTRP (Clinical Trial Reporting Program) ) 9L-17-15 ( Other Identifier: USC / Norris Comprehensive Cancer Center ) P30CA014089 ( U.S. NIH Grant/Contract ) |
First Posted: | May 9, 2018 Key Record Dates |
Last Update Posted: | November 30, 2021 |
Last Verified: | November 2021 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Leukemia Leukemia, Myeloid Leukemia, Myeloid, Acute Precursor Cell Lymphoblastic Leukemia-Lymphoma Leukemia, Lymphoid Leukemia, Myelogenous, Chronic, BCR-ABL Positive Precursor T-Cell Lymphoblastic Leukemia-Lymphoma Myelodysplastic Syndromes Myeloproliferative Disorders Myelodysplastic-Myeloproliferative Diseases Recurrence Philadelphia Chromosome Neoplasms by Histologic Type Neoplasms Disease Attributes |
Pathologic Processes Bone Marrow Diseases Hematologic Diseases Lymphoproliferative Disorders Lymphatic Diseases Immunoproliferative Disorders Immune System Diseases Translocation, Genetic Chromosome Aberrations Cytarabine Vincristine Antimetabolites, Antineoplastic Antimetabolites Molecular Mechanisms of Pharmacological Action Antineoplastic Agents |