Treatment of Acute Myeloid Leukemia

Drug - glasdegib

Daily Glasdegib (100 mg, PO), beginning on Day 1 and is to continue up to 2 years post randomization. Following consolidation therapy, glasdegib or placebo will be administered daily for up to 2 years after randomization or until they have minimal residual disease (MRD) negative disease, whichever comes first. Daily Glasdegib (100 mg, PO) or matching placebo will continue throughout Induction(s) and Consolidation therapies regardless of dose modifications/delays in the chemotherapy.

Drug - daunorubicin + cytarabine

'7+3' (cytarabine 100 mg/m2, IV for 7 days by continuous infusion and daunorubicin 60 mg/m2 for 3 days). If a second induction is needed, Investigators may choose either a 5 day cytarabine continuous infusion plus daunorubicin for 2 days ('5+2') or a 7 day cytarabine continuous infusion plus daunorubicin for 3 days ('7+3');

Drug - azacitidine

Azacitidine (75 mg/m2, SC or IV) daily for 7 days, in 28 day cycles for as long as they do not meet the criteria for disease progression, unacceptable toxicity, consent withdrawal, or death.

Drug - Placebo

Matching placebo (PO) given on Day 1 and is to continue up to 2 years post randomization. Following consolidation therapy, placebo will be administered daily for up to 2 years after randomization or until they have MRD negative disease, whichever comes first. Daily placebo will continue throughout Induction(s) and Consolidation therapies regardless of dose modifications/delays in the chemotherapy.

Drug - Placebo

Matching placebo (PO) is to be administered by mouth daily beginning on Day 1 of chemotherapy and will continue if subjects demonstrate reasonable evidence of clinical benefit and do not meet the criteria for progression regardless of any delays/modifications in the chemotherapy treatment. Subjects will continue placebo until disease progression, unacceptable toxicity, consent withdrawal, or death, whichever comes first.

Drug - glasdegib

Glasdegib 100 mg PO QD is to be administered by mouth daily beginning on Day 1 of chemotherapy and will continue if subjects demonstrate reasonable evidence of clinical benefit and do not meet the criteria for progression regardless of any delays/modifications in the chemotherapy treatment. Subjects will continue glasdegib until disease progression, unacceptable toxicity, consent withdrawal, or death, whichever comes first.

Drug - cytarabine

Consolidation with single agent cytarabine 3 g/m2 IV for adults <60 years and 1 g/m2 for adults 60 years over 3 BID on Days 1, 3, and 5, every 28 days for up to 4 cycles or alternative single agent cytarabine consolidation schedules may be used per local prescribing information.

Procedure - HSCT

If required, and done per standard of care post Induction(s).