Description
The purpose of this study is to compare the effect of a blood thinning drug called Apixaban versus no administration of a blood thinning drug, in preventing blood clots in children with leukemia or lymphoma. Patients must be receiving chemotherapy, including asparaginase, and have a central line (a catheter inserted for administration of medications and blood sampling)
Eligibility
Inclusion Criteria
- New diagnosis of de novo ALL, lymphomas (T or B cell), or mixed-phenotype acute leukemia
- Planned 3-4 drug systemic induction chemotherapy with a corticosteroid, vincristine and a single dose or multiple doses of asparaginase, with or without daunorubicin
- Functioning Central Venous Access Device
- Must be able to tolerate oral medication or have it administered via an Nasogastric tube (NGT) or GT tube
- Males and females,age 1 year(365 days) to < 18 (17 years and 364 days) years.
Exclusion Criteria
- Subjects scheduled to have > 3 Lumbar Punctures over the course of the study treatment period
- Prior history of documented DVT or PE in the past 3 months
- Known inherited bleeding disorder or coagulopathy
- Major surgery [excluding Central Venous Access Device (CVAD) replacement and bone marrow aspiration and non-open biopsy] within the last 7 days prior to enrollment that may be associated with a risk of bleeding. Open biopsy is considered a major surgery.
- Uncontrolled severe hypertension at enrollment. Severe hypertension is defined as a systolic or diastolic blood pressure (BP) > 5 mm Hg above the 95th percentile as defined by the National High Blood Pressure Education Program Working Group (NHBPEP) established guidelines for the definition of normal and elevated blood pressure in children
- Extreme hyperleukocytosis, white blood cell (WBC) counts over 200 x 109/L (200,000/microL) at the time of enrollment
- Liver dysfunction manifested by SGTP (ALT) > 5X Upper limit of normal (ULN) and/or Aspartate aminotransferase (AST) >5 X ULN and/or direct (conjugated) bilirubin > 2X ULN
- Renal function < 30% of normal for age and size as determined by the Schwartz formula
- International normalized ratio (INR) > 1.4 and activated partial thromboplastin time (aPTT) > 3 seconds above the upper limit of normal for age, within 1 week prior to enrollment.
- History of allergy to apixaban or Factor Xa inhibitors
- History of significant adverse reaction or major bleeding related adverse reaction to other anticoagulant or antiplatelet agents
- History of any significant drug allergy (such as anaphylaxis or hepatotoxicity
- Any investigational drug being administered during the study