Patient description: A 53-year-old man presents with chronic HCV infection for the past 2 years. His past medical history is only significant for inguinal hernia surgery when he was 20 years old. He is on IFN (100 mg/week) plus RBV (400 mg/day) combination therapy for the past 9 months. Direct antiviral drugs were added to his treatment 6 months ago. His medical record shows previous positive HCV RNA tests as well as positive enzyme immunoassay for anti-HCV-antibodies. The recent biopsy was negative for hepatocellular carcinoma and was only remarkable for chronic inflammation compatible with a chronic viral hepatitis. There is no evidence of alcoholic liver disease, bleeding from esophageal varices, hemochromatosis, autoimmune hepatitis or metabolic liver disease. He is an alert male with no acute distress. His BP: 130/75, HR: 90/min and BMI: 27. His abdomen is soft with no ascites or tenderness. The lower extremities are normal with no edema.

Clinical trial eligibility criteria: eligible ages (years): 0.0-22.0,  Acute Myeloid Leukemia All patients must be enrolled on APEC14B1 and consented to Screening (Part A) prior to enrollment and treatment on AAML1831. Submission of diagnostic specimens must be done according to the Manual of Procedures). Risk stratification will not be possible without the submission of viable samples. Given there are multiple required samples, bone marrow acquisition techniques such as frequent repositioning or performing bilateral bone marrow testing should be considered to avoid insufficient material for required studies. Consider a repeat marrow prior to starting treatment if there is insufficient diagnostic material for the required studies Patients must be less than 22 years of age at the time of study enrollment Patient must be newly diagnosed with de novo AML according to the 2016 World Health Organization (WHO) classification with or without extramedullary disease Patient must have 1 of the following >= 20% bone marrow blasts (obtained within 14 days prior to enrollment) In cases where extensive fibrosis may result in a dry tap, blast count can be obtained from touch imprints or estimated from an adequate bone marrow core biopsy < 20% bone marrow blasts with one or more of the genetic abnormalities (sample obtained within 14 days prior to enrollment) A complete blood count (CBC) documenting the presence of at least 1,000/uL (i.e., a white blood cell [WBC] count >= 10,000/uL with >= 10% blasts or a WBC count of >= 5,000/uL with >= 20% blasts) circulating leukemic cells (blasts) if a bone marrow aspirate or biopsy cannot be performed (performed within 7 days prior to enrollment) ARM C: Patient must be >= 2 years of age at the time of Late Callback ARM C: Patient must have FLT3/ITD allelic ratio > 0.1 as reported by Molecular Oncology  Patients with myeloid neoplasms with germline predisposition are not eligible Fanconi anemia Shwachman Diamond syndrome Patients with constitutional trisomy 21 or with constitutional mosaicism of trisomy 21 Any other known bone marrow failure syndrome Any concurrent malignancy Juvenile myelomonocytic leukemia (JMML) Philadelphia chromosome positive AML Mixed phenotype acute leukemia Acute promyelocytic leukemia