A Proof of Concept Pilot Study of the Addition of Venetoclax to Standard Remission Induction Chemotherapy Fludarabine or Cladrabine, Cytarabine, and Granulocyte Colony Stimulating Factor (G-CSF) (FLAG or CLAG) for Frontline Therapy of Secondary Acute Myeloid Leukemia

Venetoclax administered orally once daily on days 3-16.

FLAG consists of daily infusions of Fludarabine (30mg/m2/day over 30 minutes) and Ara-C (2g/m2/day over 4 hours) for 5 days with daily subcutaneous injections of G-CSF until count recovery. Tbo-filgrastim will be administered as follows: WBC count \>50,000 - 5mcg/kg; WBC count \<50,000 - hold Tbo-filgrastim. Given the national shortage of Fludarabine, Cladrabine (5mg/m2/day IV over 2 hours) has been substituted (CLAG) with similar toxicity profile.