Glasdegib

Table 5. Drug Interactions with DAURISMO Strong CYP3A Inhibitors Clinical Impact • Co-administration of DAURISMO with strong CYP3A inhibitors increased glasdegib plasma concentrations [see Clinical Pharmacology (12.3) ]. • Increased glasdegib concentrations may increase the risk of adverse reactions including QTc interval prolongation [see Warnings and Precautions (5.2) ] . Prevention or Management • Consider alternative therapies that are not strong CYP3A4 inhibitors during treatment with DAURISMO. • Monitor patients for increased risk of adverse reactions including QTc interval prolongation [see Warnings and Precautions (5.2) ].

Strong and Moderate CYP3A Inducers Clinical Impact Co-administration of DAURISMO with strong and moderate CYP3A inducers decreased glasdegib plasma concentrations [see Clinical Pharmacology (12.3) ] . • Decreased glasdegib concentrations may reduce efficacy. Prevention or Management • Avoid co-administration of DAURISMO with strong and moderate CYP3A4 inducers. • If co-administration of DAURISMO with moderate CYP3A4 inducers cannot be avoided, increase the dose of DAURISMO [see Dosage and Administration (2.3) ] .

QTc Prolonging Drugs Clinical Impact Co-administration of DAURISMO with QTc prolonging drugs may increase the risk of QTc interval prolongation [see Warnings and Precautions (5.2) ]. Prevention or Management • Avoid co-administration of QTc prolonging drugs with DAURISMO or replace with alternative therapies. • If co-administration of a QTc prolonging drug is unavoidable, monitor patients for increased risk of QTc interval prolongation [see Warnings and Precautions (5.2) ]. • Strong CYP3A4 Inhibitors: Consider alternative therapies that are not strong CYP3A4 inhibitors or monitor for increased risk of adverse reactions, including QTc interval prolongation.

( 7 ) • Strong CYP3A4 Inducers: Avoid concomitant use with DAURISMO. ( 7 ) • Moderate CYP3A4 Inducers: Avoid concomitant use with DAURISMO. If, concomitant use cannot be avoided, increase the dose of DAURISMO. ( 2.3 , 7 ) • QTc Prolonging Drugs: Avoid co-administration with DAURISMO. If co-administration is unavoidable, monitor for increased risk of QTc interval prolongation. ( 7 )

8.1 Pregnancy Risk Summary Based on its mechanism of action and findings in animal embryo-fetal developmental toxicity studies, DAURISMO can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology (12.1) ] . There are no clinical data on the use of DAURISMO in pregnant women to inform of a drug-associated risk of major birth defects and miscarriage. DAURISMO is not recommended for use during pregnancy. Conduct pregnancy testing in female patients of reproductive potential prior to initiating treatment with DAURISMO. Report pregnancy exposures to Pfizer at 1-800-438-1985.

In animal embryo-fetal developmental toxicity studies, repeat-dose oral administration of DAURISMO during organogenesis at maternal exposures that were less than the human exposure at the recommended dose resulted in embryotoxicity, fetotoxicity and teratogenicity in rats and rabbits (see Data ) . Advise pregnant women of the potential risk to a fetus. The estimated background risk of major birth defects and miscarriage for the indicated population are unknown. Adverse outcomes in pregnancy occur regardless of the health of the mother or the use of medications. In the U.S.

general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal Data In embryo-fetal developmental toxicity studies, glasdegib was orally administered to pregnant rats and rabbits at doses up to 100 mg/kg/day during the period of organogenesis. Glasdegib resulted in embryo-fetal lethality (e.g., increased postimplantation loss and decreased numbers of live fetuses) in rats and rabbits at 50 mg/kg/day and 5 mg/kg/day, respectively, at maternal exposures approximately 4-times and 3-times the human exposure at the recommended dose [based on C max (rat) and AUC (rabbit)].

Doses of ≥10 mg/kg in rat [approximately 0.6-times the human exposure (C max ) at the recommended dose] and ≥5 mg/kg in rabbit resulted in fetal developmental abnormalities and malformations consisting of craniofacial malformations, malformed limbs, paws/digits, trunk and tail, dilation of brain, malpositioned/malformed eyes, misshapen head, small tongue, absent palate, teeth and viscera, diaphragmatic hernia, edema, heart defects, rib and vertebral abnormalities, malformed or absent structures in the appendicular skeleton.