Patient description: A 62-year-old African-American man presented with left upper and lower extremity weakness, associated with dark visual spot in right eye, right facial numbness, facial drop and slurred speech. He denied dyspnea, headache, palpitations, chest pain, fever, dizziness, bowel or urinary incontinence, loss of consciousness. His medical history was significant for hypertension, hyperlipidemia and hypothyroidism. He smokes cigarette 1 pack per day for 40 years and alcohol consumption of 5 to 6 beers per week. He is not aware about his family history. He is using Levothyroxine, Atorvastatin and HTCZ. His vital signs were stable in the primary evaluation. Left-sided facial droop, dysarthria, and left-sided hemiplegia were seen in the physical exam. His National Institutes of Health Stroke Scale (NIHSS) score was calculated as 7. Initial CT angiogram of head and neck reported no acute intracranial findings. Intravenous recombinant tissue plasminogen activator (t-PA) was administered as well as high-dose statin therapy. The patient was admitted to the intensive care unit to be monitored for 24 hours. MRI of the head revealed an acute 1.7-cm infarct of the right periventricular white matter and posterior right basal ganglia.

Clinical trial eligibility criteria: eligible ages (years): 1.0-30.0,  Down Syndrome Recurrent B Acute Lymphoblastic Leukemia Patients must be >= 1 and < 31 years at time of enrollment Patients must have first relapse of CD19+ B-ALL (relapse blasts must express CD19) in one of the following categories Isolated bone marrow relapse Isolated central nervous system (CNS) (excluding known optic nerve/retinal and CNS chloromas) and/or testicular relapse Combined bone marrow with extramedullary relapse in the CNS (excluding known optic nerve/retinal and CNS chloromas) and/or testes Patients with Down syndrome (DS) are eligible in the following categories Isolated bone marrow relapse Combined bone marrow with CNS (excluding known optic nerve/retinal and CNS chloromas) and/or testicular relapse Patients must have a performance status corresponding to Eastern Cooperative Oncology Group (ECOG) scores of 0, 1 or 2. Use Karnofsky for patients > 16 years of age and Lansky 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  Patients with B-lymphoblastic lymphoma (B-LLy) Patients with Burkitt leukemia/lymphoma or mature B-cell leukemia Patients with Philadelphia chromosome positive (Ph+) B-ALL Patients with mixed phenotype acute leukemia (MPAL) Patients with known Charcot-Marie-Tooth disease Patients with known MYC translocation associated with mature (Burkitt) B-cell ALL, regardless of blast immunophenotype Patients with active, uncontrolled infection defined as Positive bacterial blood culture within 48 hours of study enrollment Receiving IV or PO antibiotics for an infection with continued signs or symptoms. Note: Patients may be receiving IV or oral antibiotics to complete a course of therapy for a prior documented infection as long as cultures have been negative for at least 48 hours and signs or symptoms of active infection have resolved. For patients with clostridium (C.) difficile diarrhea, at least 72 hours of antibacterial therapy must have elapsed and stools must have normalized to baseline Fever above 38.2 degrees Celsius (C) within 48 hours of study enrollment with clinical signs of infection. Fever without clinical signs of infection that is attributed to tumor burden is allowed as long as blood cultures are negative for > 48 hours