Low-Dose Cytarabine in Treating Infants With Down Syndrome and Transient Myeloproliferative Disorder
Leukemia
About this trial
This is an interventional treatment trial for Leukemia focused on measuring acute myeloid leukemia/transient myeloproliferative disorder
Eligibility Criteria
DISEASE CHARACTERISTICS:
- Diagnosis of transient myeloproliferative disorder (TMD)
Diagnosis of Down syndrome or Down syndrome mosaicism (confirmed by karyotype analysis within the past 3 weeks) AND 1 of the following:
- Nonerythroid and nonlymphoid blasts (any amount) in the peripheral blood with verification of a second sample
- Trisomy 21-positive leukemic blasts documented by biopsy of any organ (including > 5% nonerythroid/nonlymphoid blasts documented by bone marrow aspirate or biopsy)
- Immunophenotype characterization required
High-, intermediate-, or low-risk TMD, as defined by the following:
High-risk TMD, meeting 1 of the following criteria:
Life-threatening cardio-respiratory compromise due to complications of TMD (e.g., organomegaly or effusions)
- Life-threatening cardio-respiratory compromise is defined as cardiovascular grade 4 edema, grade 4 pericardial effusions, or grade 4 pleural effusions
- Hyperleukocytosis, defined as a WBC > 100,000/mm³
Any degree of hepatomegaly (palpable on physical exam) combined with life-threatening hepatic dysfunction
- Life-threatening hepatic dysfunction is defined as grade 4 disseminated intravascular coagulation, grade 4 ascites, grade 4 bilirubin (> 10.0 times upper limit of normal [ULN]), or grade 4 AST or ALT (> 20.0 times ULN)
Intermediate-risk TMD, meeting all of the following criteria:
- Hepatomegaly (palpable on physical exam) combined with non life-threatening hepatic dysfunction (i.e., grade 1-3 hepatic dysfunction [AST or ALT ≤ 2.5 times ULN] and/or a total or direct bilirubin ≤ 1.5 times ULN)
- No evidence of life-threatening cardiovascular, respiratory, or hepatic compromise due to complications of TMD
Low-risk TMD, meeting all of the following criteria:
- No palpable hepatomegaly on physical exam OR hepatomegaly is present without hepatic dysfunction (i.e., grade 0 hepatic dysfunction)
- No evidence of life-threatening cardiovascular, respiratory, or hepatic compromise due to complications of TMD
PATIENT CHARACTERISTICS:
- See Disease Characteristics
- No biliary atresia by hepatic ultrasound for patients with bilirubin 3.0-10.0 times ULN
PRIOR CONCURRENT THERAPY:
- No prior antileukemic therapy (except for leukapheresis or exchange transfusion)
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Experimental
Other
Group I
Group II
Patients receive very low-dose cytarabine subcutaneously twice daily on days 1-7. Treatment repeats every 14 days for up to 4 courses in the absence of disease progression or unacceptable toxicity. Patients achieving stable disease or complete or hepatic clinical remission undergo observation.
Patients are observed. If symptoms of intermediate- or high-risk disease develop, patients may crossover to group I.