Ensartinib

Moderate or Strong CYP3A Inhibitors : Avoid concomitant use with ENSACOVE. ( 7.1 ) Moderate or Strong CYP3A Inducers : Avoid concomitant use with ENSACOVE. ( 7.1 ) P-gp Inhibitor : Avoid concomitant use with ENSACOVE. ( 7.1 )

7.1 Effect of Other Drugs on ENSACOVE Table 5 describes drug interactions where concomitant use of another drug affects ENSACOVE. Table 5: Effect of Other Drugs on ENSACOVE Strong or Moderate CYP3A Inhibitors Prevention or Management Avoid concomitant use of strong or moderate CYP3A inhibitors with ENSACOVE. Mechanism and Clinical Effect(s) This recommendation is based upon a mechanistic understanding of ensartinib pharmacokinetics and it being a CYP3A4 substrate in vitro [see Clinical Pharmacology ( 12.3 )] . Concomitant use with strong or moderate CYP3A inhibitors may increase ensartinib exposure; however, this has not been studied clinically.

Strong or Moderate CYP3A Inducers Prevention or Management Avoid concomitant use of strong or moderate CYP3A inducers with ENSACOVE. Mechanism and Clinical Effect(s) This recommendation is based upon a mechanistic understanding of ensartinib pharmacokinetics and it being a CYP3A4 substrate in vitro [see Clinical Pharmacology ( 12.3 )] . Concomitant use with strong or moderate CYP3A inducers may decrease ensartinib exposure; however, this has not been studied clinically. P-gp Inhibitors Prevention or Management Avoid concomitant use of P-gp inhibitors with ENSACOVE.

Mechanism and Clinical Effect(s) This recommendation is based upon a mechanistic understanding of ensartinib pharmacokinetics and it being a P-gp substrate in vitro [see Clinical Pharmacology ( 12.3 )] . Concomitant use with P-gp inhibitors may increase ensartinib exposure; however, this has not been studied clinically.

8.1 Pregnancy Risk Summary Based on findings from animal studies and its mechanism of action [see Clinical Pharmacology ( 12.1 )] , ENSACOVE can cause fetal harm when administered to a pregnant woman. There are no available data on the use of ENSACOVE in pregnant women to inform a drug-associated risk. Oral administration of ensartinib to pregnant rats during the period of organogenesis caused adverse developmental outcomes, including embryo-fetal mortality, alterations to growth, and structural abnormalities. Adverse embryo-fetal findings were seen at maternal exposures approximately equivalent to the human exposure at the recommended dose of 225 mg/day based on AUC ( see Data ).

Advise pregnant women of the potential risk to a fetus. 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 an embryo-fetal development study, pregnant rats received 20, 40, or 80 mg/kg/day of ensartinib during the period of organogenesis (gestation day 6 to 17).

Ensartinib doses ≥40 mg/kg/day (approximately equivalent to the human exposure at the recommended dose of 225 mg/day based on AUC) resulted in an increase in the incidence of fetal malformations (aortic dislocation, ventricular septal defect, separated vertebrae) and dose-dependent delayed skeletal development, including decreased or delayed ossification of the vertebrae.

Ensartinib at 80 mg/kg (approximately 6.4 times the human exposure at the recommended dose of 225 mg/day based on AUC) resulted in maternal toxicity (reduced body weight and food consumption), decreased fetal body weight, increased pre- and post-implantation loss, decreases in the number of live fetuses, and visceral variations (missing renal papillae, pyelectasis).

8.3 Females and Males of Reproductive Potential ENSACOVE can cause fetal harm when administered to a pregnant woman [see Use in Specific Populations ( 8.1 ) ]. Pregnancy Testing Verify the pregnancy status of females of reproductive potential prior to initiating ENSACOVE. Contraception Females Advise females of reproductive potential to use effective contraception during treatment with ENSACOVE and for at 1 week after the last dose. Males Advise male patients with female partners of reproductive potential to use effective contraception during treatment with ENSACOVE and for 1 week after the last dose.