Ensartinib

Description

11 DESCRIPTION ENSACOVE capsules contain ensartinib, a kinase inhibitor, present as ensartinib hydrochloride with the chemical name 6-amino-5-[(1 R )-1-(2,6-dichloro-3-fluorophenyl)ethoxy]-N-{4-[(3 R ,5 S )- 3,5-dimethylpiperazine-1-carbonyl]phenyl}pyridazine-3-carboxamide, dihydrochloride. The molecular formula is C26H27Cl2FN6O3·2HCl and its molecular weight is 634.4 g/mol with the following structure: ENSACOVE capsules are intended for oral administration and are available in two dosage strengths: 25 mg ensartinib (equivalent to 28.25 mg ensartinib hydrochloride) and 100 mg ensartinib (equivalent to 113.02 mg ensartinib hydrochloride). The inactive ingredients of ENSACOVE capsules are microcrystalline cellulose and stearic acid. The inactive ingredients of the 25 mg empty capsule shells are hypromellose and titanium dioxide. The inactive ingredients of the 100 mg empty capsules shells are black iron oxide, FD&C Blue No. 1, FD&C Yellow No. 5, hypromellose, red iron oxide, and titanium dioxide. The imprinting ink for the 25 mg capsules contains butyl alcohol, dehydrated alcohol, FD&C Blue No. 2, isopropyl alcohol, propylene glycol, shellac, and strong ammonia solution. The imprinting ink for the 100 mg capsules contains butyl alcohol, dehydrated alcohol, isopropyl alcohol, povidone, propylene glycol, shellac, sodium hydroxide, and titanium dioxide. Chemical Structure

What Is Ensartinib Used For?

1 INDICATIONS AND USAGE ENSACOVE is indicated for the treatment of adult patients with anaplastic lymphoma kinase (ALK)-positive locally advanced or metastatic non-small cell lung cancer (NSCLC)as detected by an FDA-approved test [see Dosage and Administration ( 2.1 )] who have not previously received an ALK-inhibitor. ENSACOVE is a kinase inhibitor indicated for the treatment of adult patients with anaplastic lymphoma kinase (ALK)-positive locally advanced or metastatic non-small cell lung cancer (NSCLC) as detected by an FDA-approved test who have not previously received an ALK-inhibitor. ( 1 , 2.1 )

Dosage and Administration

2 DOSAGE AND ADMINISTRATION Select patients with ALK-positive locally advanced or metastatic NSCLC for treatment with ENSACOVE. ( 2.1 ) Prior to initiating ENSACOVE, evaluate liver function tests and fasting blood glucose. ( 2.2 ) Recommended dosage: 225 mg orally once daily with or without food until disease progression or unacceptable toxicity. ( 2.3 ) 2.1 Patient Selection Select patients for the treatment of locally advanced or metastatic NSCLC with ENSACOVE based on the presence of ALK rearrangement(s) in tumor specimens [see Clinical Studies ( 14.1 )] . Information on FDA-approved tests for the detection of ALK rearrangements in NSCLC is available at http://www.fda.gov/CompanionDiagnostics . 2.2 Recommended Testing and Advice Prior to Initiating ENSACOVE Prior to initiating ENSACOVE, evaluate liver function tests [see Warnings and Precautions ( 5.2 )] and fasting blood glucose [see Warnings and Precautions ( 5.5 )]. 2.3 Recommended Dosage The recommended dosage of ENSACOVE is 225 mg orally once daily, with or without food [see Clinical Pharmacology ( 12.3 )] , until disease progression or unacceptable toxicity. Swallow capsules whole, do not crush or chew. Do not open or dissolve the contents of the capsule. Take ENSACOVE at the same time each day. Missed dose If a dose is missed, then take the missed dose as soon as possible unless the next dose is due within 12 hours. Do not take 2 doses on the same day. Vomiting If vomiting occurs after taking a dose, do not take an additional dose and take the next dose at its scheduled time. 2.4 Dosage Modification for Adverse Reactions The recommended dose reductions for adverse reactions are provided in Table 1. Table 1: Recommended Dose Reductions for Adverse Reactions Dose Reduction Recommended Dose and Schedule First 200 mg orally once daily Second 150 mg orally once daily Permanently discontinue ENSACOVE if patients are unable to tolerate 150 mg orally once daily. Once the dose has been reduced for adverse reactions, do not subsequently increase the dose of ENSACOVE. The recommended dosage modifications for the management of adverse reactions are provided in Table 2. Table 2: Recommended ENSACOVE Dosage Modifications for Adverse Reactions Adverse Reaction Severity* ENSACOVE Dose Modification and Management for Adverse Reactions Interstitial Lung Disease (ILD)/Pneumonitis [see Warnings and Precautions ( 5.1 )] Any Grade Permanently discontinue ENSACOVE. Hepatotoxicity [see Warnings and Precautions ( 5.2 )] Grade 3 or 4 elevation (greater than 5 times ULN) of either ALT or AST with concurrent total bilirubin less than or equal to 2 times ULN Withhold ENSACOVE until recovery to Grade ≤1 (≤3 times ULN) or to baseline. Resume ENSACOVE at reduced dose as per Table 1. Grade 2 to 4 elevation (greater than 3 times ULN) of either ALT or AST with concurrent total bilirubin elevation greater than 2 times ULN in the absence of cholestasis or hemolysis Permanently discontinue ENSACOVE. Dermatologic Adverse...

Side Effects (Adverse Reactions)

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Interstitial Lung Disease/Pneumonitis [see Warnings and Precautions ( 5.1 )] Hepatoxicity [see Warnings and Precautions ( 5.2 )] Dermatologic Adverse Reactions [see Warnings and Precautions ( 5.3 )] Bradycardia [see Warnings and Precautions ( 5.4 )] Hyperglycemia [see Warnings and Precautions ( 5.5 )] Visual Disturbances [see Warnings and Precautions ( 5.6 )] Increased Creatine Phosphokinase [see Warnings and Precautions ( 5.7 )] Hyperuricemia [see Warnings and Precautions ( 5.8 )] FD&C Yellow No. 5 (Tartrazine) [see Warnings and Precautions ( 5.10 ) ] Most common adverse reactions (incidence ≥20%) were rash, musculoskeletal pain, constipation, pruritus, cough, nausea, edema, vomiting, fatigue, and pyrexia. ( 6.1 ) Most common Grade 3-4 laboratory abnormality (incidence ≥2%) were increased uric acid, decreased lymphocytes, increased alanine aminotransferase, decreased phosphate, increased gamma glutamyl transferase, increased magnesium, increased amylase, decreased sodium, increased glucose, decreased hemoglobin, increased bilirubin, decreased potassium, and increased creatine phosphokinase. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Xcovery Holdings, Inc. at (866) 367-2268 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The pooled safety population described in the WARNINGS AND PRECAUTIONS reflects exposure to ENSACOVE as a single agent in 458 patients with locally advanced or metastatic ALK-positive NSCLC in the following trials: eXALT3 Study (N=143) [see Clinical Studies ( 14.1 ) ], Study 101 (NCT01625234, N=98), Study BTP-28311 (NCT02959619, N=35), and Study BTP-42322 (NCT03215693, N=182). Patients received ENSACOVE 225 mg orally once daily, with or without food, until disease progression or unacceptable toxicity. Among 458 patients who received ENSACOVE, 63% were exposed for 6 months or longer and 47% were exposed for greater than one year. In this pooled safety population, the most common adverse reactions (≥20%) were rash, musculoskeletal pain, constipation, pruritus, cough, nausea, edema, vomiting, fatigue, and pyrexia. The most frequent Grade 3 or 4 laboratory abnormalities (≥2%) were increased uric acid, decreased lymphocytes, increased alanine aminotransferase, decreased phosphate, increased gamma glutamyl transferase, increased magnesium, increased amylase, decreased sodium, increased glucose, decreased hemoglobin, increased bilirubin, decreased potassium, and increased creatine phosphokinase. TKI-naive ALK-Positive Locally Advanced or Metastatic NSCLC The safety of ENSACOVE was evaluated in the eXALT3 study [see Clinical Studies ( 14.1 ) ]. Patients received ENSACOVE 225 mg orally once daily, with or without food, until disease progression or unacceptable toxicity . Among patients who received ENSACOVE, 78% were exposed for 6 months or longer and 66% were exposed for greater than one year. The median age of patients who received ENSACOVE was 54 years (range: 25-86); 50% male; 54% Asian, 43% White; 0.7% Black or African American; and 11% Hispanic or Latino. Serious adverse reactions occurred in 23% of patients treated with ENSACOVE. Serious adverse reactions that occurred in ≥1% were pneumonia (4.9%), hemorrhage (2.1%), rash (2.1%) and cellulitis (1.4%). One fatal adverse reaction (0.7%) occurred due to bronchopneumonia. Permanent discontinuation of ENSACOVE due to an adverse reaction occurred in 12% of patients. Adverse reactions which resulted in permanent discontinuation of ENSACOVE (≥1%) included increased blood bilirubin (1.4%), increased conjugated bilirubin (1.4%), increased ALT (2.1%),...

Drug Interactions

7 DRUG INTERACTIONS 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.

Contraindications

4 CONTRAINDICATIONS ENSACOVE is contraindicated in patients who have experienced a severe hypersensitivity reaction to ENSACOVE, FD&C Yellow No. 5 (tartrazine), or to any of its components [see Warnings and Precautions ( 5.10 )] . Hypersensitivity reaction to ENSACOVE, FD&C Yellow No. 5 (tartrazine), or to any of its components. ( 4 )

Pregnancy and Breastfeeding

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.

How Supplied

16 HOW SUPPLIED ENSACOVE (ensartinib) capsules are supplied as follows: Capsule Strength Description Package Configuration NDC Code 25 mg Size 2 capsule, white opaque cap and body, with “X-396” on the cap and “25 mg” on the body printed in blue ink. Bottles of 30 83076-1025-3 100 mg Size 0 capsule, blue opaque cap and yellow opaque body, with “X- 396” on the cap and “100 mg” on the body printed in white ink. Bottles of 60 83076-1100-6 Store at controlled room temperature 20ºC to 25ºC (68ºF to 77ºF); excursions permitted to 15ºC to 30ºC (59ºF to 86ºF) [see USP Controlled Room Temperature] . Store and dispense in the original bottle with desiccant to protect from moisture. Do not remove desiccant from bottle. Keep out of reach of children