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About
This phase I trial is studying the side effects and best dose of obatoclax mesylate when given together with vincristine sulfate, doxorubicin hydrochloride, and dexrazoxane hydrochloride in treating young patients with relapsed or refractory solid tumors, lymphoma, or leukemia. Obatoclax mesylate may stop the growth of cancer cells by blocking some of the proteins needed for cell growth and causing the cells to self-destruct. Drugs used in chemotherapy, such as vincristine sulfate, doxorubicin hydrochloride, and dexrazoxane hydrochloride, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving obatoclax mesylate together with combination chemotherapy may kill more cancer cells.
Full description
PRIMARY OBJECTIVES:
I. To estimate the maximum tolerated dose (MTD) and/or recommended Phase II dose of obatoclax (obatoclax mesylate) administered as a single agent on day 1 and in combination with vincristine ( vincristine sulfate), doxorubicin (doxorubicin hydrochloride), and dexrazoxane (dexrazoxane hydrochloride) at day 8 in children with refractory solid tumors.
II. To define and describe the toxicities of obatoclax administered on this schedule.
III. To characterize the pharmacokinetics of obatoclax in children with refractory solid tumors or relapsed leukemia.
SECONDARY OBJECTIVES:
I. To preliminarily define the antitumor activity of obatoclax in children with refractory or relapsed solid tumors and leukemias within the confines of a Phase I study.
II. To preliminarily assess leukemic blast characteristics associated with obatoclax activity.
III. To preliminarily assess the biological activity of obatoclax by investigating effects on cell death regulatory pathways.
OUTLINE: This is a dose-escalation study of obatoclax mesylate.
STRATUM 1 (dose-escalation): Patients receive obatoclax mesylate intravenously (IV) over 3 hours on days 1 and 8 and vincristine sulfate IV, doxorubicin hydrochloride IV, and dexrazoxane hydrochloride IV on day 8 of course 1 (28 days). Drugs are administered on day 1 of subsequent courses and repeat every 21 days for up to 1 year in the absence of disease progression or unacceptable toxicity.
STRATUM 2: Patients receive obatoclax mesylate (at starting dose in stratum 1), vincristine sulfate, doxorubicin hydrochloride, and dexrazoxane hydrochloride as in stratum 1.
STRATUM 3: Patients receive obatoclax mesylate (at the MTD determined in stratum 1), vincristine sulfate, doxorubicin hydrochloride, and dexrazoxane hydrochloride as in stratum 1.
After completion of study therapy, patients are followed up for 30 days.
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Inclusion criteria
Stratum 1 (solid tumors, including lymphomas): patients must have had histologic verification of malignancy at original diagnosis or relapse; patients with recurrent or refractory solid tumors are eligible, excluding primary central nervous system (CNS) tumors or patients with known CNS metastases
Stratum 2 (mixed-lineage leukemia [MLL] + leukemia): patients with recurrent or refractory MLL+ leukemia are eligible excluding those patients with symptomatic CNS leukemia, CNS chloromas, or leptomeningeal leukemic involvement
Stratum 3 (other leukemias): patients with non-MLL+ recurrent or refractory leukemia (acute lymphoblastic leukemia [ALL], acute myeloid leukemia [AML] or chronic myeloid leukemia [CML] in blast crisis) are eligible excluding those patients with symptomatic CNS leukemia, CNS chloromas, or leptomeningeal leukemic involvement
Stratum 1: patients must have either measurable or evaluable disease
Strata 2 and 3: patients with leukemia must have a > 25% blasts on bone marrow aspirate to be eligible
Patient's current disease state must be one for which there is no known curative therapy or therapy proven to prolong survival with an acceptable quality of life
Karnofsky >= 50% for patients > 16 years of age and Lansky >= 50 for patients =< 16 years of age
Patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to entering this study
STRATUM 1: Peripheral absolute neutrophil count (ANC) >= 1000/mm^3
STRATUS 1: Platelet count >= 100,000/mm^3 (transfusion independent, defined as not receiving platelet transfusions within a 7 day period prior to enrollment)
STRATUM 1: Hemoglobin >= 8.0 g/dL (may receive red blood cell [RBC] transfusions)
STRATA 2 and 3: Platelet count >= 20,000/mm^3 (may receive platelet transfusions)
STRATA 2 and 3: Hemoglobin >= 8.0 g/dL (may receive RBC transfusions)
Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70ml/min/1.73 m^2 OR a serum creatinine based on age/gender as follows:
Bilirubin (sum of conjugated + unconjugated) >= 1.5 x upper limit of normal (ULN) for age
Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) >= 110 U/L; for the purpose of this study, the ULN for SGPT is 45 U/L
Serum albumin >= 2 g/dL
Shortening fraction of >= 27% by echocardiogram, or ejection fraction of >= 50% by gated radionuclide study
Stable neurological examination for at least 2 weeks prior to study enrollment; no known > grade 2 unresolved neurological toxicities
All patients and/or their parents or legal guardians must sign a written informed consent; assent, when appropriate, will be obtained according to institutional guidelines
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22 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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