Increased Creatinine
A median increase in serum creatinine of 31% was observed 21 days after initiation of treatment with TEPMETKO. The serum creatinine increases persisted throughout treatment and were reversible upon treatment completion.
Dual Strong CYP3A Inhibitors and P-gp Inhibitors
The effect of strong CYP3A inhibitors or P-gp inhibitors on TEPMETKO has not been studied clinically. However, metabolism and in vitro data suggest concomitant use of drugs that are strong CYP3A inhibitors and P-gp inhibitors may increase tepotinib exposure [see Clinical Pharmacology (12.3)], which may increase the incidence and severity of adverse reactions of TEPMETKO. Avoid concomitant use of TEPMETKO with dual strong CYP3A inhibitors and P-gp inhibitors.
Strong CYP3A Inducers
The effect of strong CYP3A inducers on TEPMETKO has not been studied clinically. However, metabolism and in vitro data suggest concomitant use may decrease tepotinib exposure [see Clinical Pharmacology (12.3)], which may reduce TEPMETKO efficacy. Avoid concomitant use of TEPMETKO with strong CYP3A inducers.
Certain P-gp Substrates
Tepotinib is a P-gp inhibitor. Concomitant use of TEPMETKO increases the concentration of P-gp substrates [see Clinical Pharmacology (12.3)], which may increase the incidence and severity of adverse reactions of these substrates. Avoid concomitant use of TEPMETKO with certain P-gp substrates where minimal concentration changes may lead to serious or life-threatening toxicities. If concomitant use is unavoidable, reduce the P-gp substrate dosage if recommended in its approved product labeling.
Risk Summary
Based on findings in animal studies and the mechanism of action [see Clinical Pharmacology (12.1)], TEPMETKO can cause fetal harm when administered to a pregnant woman. There are no available data on the use of TEPMETKO in pregnant women. Oral administration of tepotinib to pregnant rabbits during the period of organogenesis resulted in malformations (teratogenicity) and anomalies at maternal exposures less than the human exposure based on area under the curve (AUC) at the 450 mg daily clinical dose (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 embryo-fetal development studies, pregnant rabbits received oral doses of 0.5, 5, 25, 50, 150, or 450 mg/kg tepotinib hydrochloride hydrate daily during organogenesis. Severe maternal toxicity occurred at the 450 mg/kg dose (approximately 0.75 times the human exposure at the 450 mg clinical dose). At 150 mg/kg (approximately 0.5 times the human exposure by AUC at the 450 mg clinical dose), two animals aborted and one animal died prematurely; mean fetal body weight was also decreased. A dose-dependent increase of skeletal malformations, including malrotations of fore and/or hind paws with concomitant misshapen scapula and/or malpositioned clavicle and/or calcaneous and/or talus, occurred at doses ≥ 5 mg/kg (approximately 0.003 times the human exposure by AUC at the 450 mg clinical dose); there was also an incidence of spina bifida at the 5 mg/kg dose level.
Risk Summary
There are no data regarding the secretion of tepotinib or its metabolites in human milk or its effects on the breastfed infant or milk production. Advise women not to breastfeed during treatment with TEPMETKO and for one week after the final dose.
Pregnancy Testing
Verify pregnancy status in females of reproductive potential prior to initiating TEPMETKO [see Use in Specific Populations (8.1)].
Contraception
Females
Advise females of reproductive potential to use effective contraception during TEPMETKO treatment and for one week after the final dose.
Males
Advise male patients with female partners of reproductive potential to use effective contraception during TEPMETKO treatment and for one week after the final dose.
Exposure-Response
Tepotinib exposure-response relationships and the time course of pharmacodynamic response have not been fully characterized.
Cardiac Electrophysiology
At the recommended dosage, no large mean increases in QTc (i.e. > 20 ms) were detected in patients with various solid tumors. A concentration-dependent increase in QTc interval was observed. The QTc effect of tepotinib at high clinical exposures has not been evaluated.
Absorption
The median Tmax of tepotinib is 8 hours (range from 6 to 12 hours). The geometric mean (CV%) absolute bioavailability of TEPMETKO in the fed state was 71.6% (10.8%) in healthy subjects.
Effect of Food
The mean AUC0-INF of tepotinib increased by 1.6-fold and Cmax increased by 2-fold, following administration of a high-fat, high-calorie meal (approximately 800 to 1,000 calories, 150 calories from protein, 250 calories from carbohydrate, and 500 to 600 calories from fat). The median Tmax shifted from 12 hours to 8 hours.
Distribution
The geometric mean (CV%) apparent volume of distribution (VZ/F) of tepotinib is 1,038 L (24.3%). Protein binding of tepotinib is 98% and is independent of drug concentration at clinically relevant exposures.
Elimination
The apparent clearance (CL/F) of tepotinib is 23.8 L/h (87.5%) and the half-life is 32 hours following oral administration of TEPMETKO in patients with cancer.
Metabolism
Tepotinib is primarily metabolized by CYP3A4 and CYP2C8. One major circulating plasma metabolite (M506) has been identified.
Excretion
Following a single oral administration of a radiolabeled dose of 450 mg tepotinib, approximately 85% of the dose was recovered in feces (45% unchanged) and 13.6% in urine (7% unchanged). The major circulating metabolite M506 accounted for about 40.4% of the total radioactivity in plasma.
Specific Populations
No clinically significant effects on tepotinib pharmacokinetics were observed based on age (18 to 89 years), race/ethnicity (White, Black, Asian, Japanese, and Hispanic), sex, body weight (35.5 to 136 kg), mild to moderate renal impairment (CLcr 30 to 89 mL/min), or mild to moderate hepatic impairment (Child-Pugh A and B). The effect of severe renal impairment (CLcr < 30 mL/min) and severe hepatic impairment (Child-Pugh C) on the pharmacokinetics of tepotinib has not been studied.
Drug Interaction Studies
Clinical Studies and Model-Informed Approaches
P-gp Substrates: Coadministration of TEPMETKO with dabigatran etexilate (P-gp substrate) increased dabigatran Cmax by 40% and AUC0-INF by 50%.
Acid-Reducing Agents: No clinically significant differences in tepotinib pharmacokinetics were observed when coadministered with multiple daily doses (40 mg daily for 5 days) of omeprazole (proton pump inhibitor) under fed conditions.
CYP3A Substrates: Coadministration of TEPMETKO had no clinically significant effect on the pharmacokinetics of midazolam (sensitive CYP3A substrate).
MATE2 and OCT2 Substrates: No clinically relevant differences in glucose levels were observed when metformin (MATE2 and OCT2 substrate) was coadministered with tepotinib.
CYP2C9 Substrates: Physiologically based pharmacokinetic modeling suggested CYP2C9 inhibition is not clinically significant.
In Vitro Studies
Cytochrome P450 Enzymes: Tepotinib is a substrate of CYP3A4 and CYP2C8. Tepotinib and M506 do not inhibit CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C19, CYP2D6 or CYP2E1, and do not induce CYP1A2 or 2B6 at clinically relevant concentrations.
UDP-Glucuronosyltransferase (UGT): Tepotinib and M506 do not inhibit UGT 1A1, 1A9, 2B17, 1A3/4/6 and 2B7/15 at clinically relevant concentrations.
Transporter Systems: Tepotinib is a P-gp substrate. Tepotinib may inhibit intestinal BCRP at clinically relevant concentrations. Tepotinib does not inhibit bile salt export pump (BSEP), organic anion transporter polypeptide (OATP) 1B1, B3, or organic anion transporter (OAT)1 and 3.
Interstitial Lung Disease (ILD)/Pneumonitis
Inform patients of the risk of severe or fatal ILD/pneumonitis. Advise patients to contact their healthcare provider immediately to report new or worsening respiratory symptoms [see Warnings and Precautions (5.1)].
Hepatotoxicity
Inform patients that they will need to undergo lab tests to monitor liver function. Advise patients to immediately contact their healthcare provider for signs and symptoms of liver dysfunction [see Warnings and Precautions (5.2)].
Embryo-Fetal Toxicity
Advise males and females of reproductive potential that TEPMETKO can cause fetal harm.
Advise females of reproductive potential to use effective contraception during and for one week after the final dose of TEPMETKO [see Warnings and Precautions (5.3) and Use in Specific Populations (8.3)].
Advise male patients with female partners of reproductive potential to use effective contraception during treatment with TEPMETKO and for one week after the final dose of TEPMETKO [see Warnings and Precautions (5.3) and Use in Specific Populations (8.3)].
Lactation
Advise women not to breastfeed during treatment with TEPMETKO and for one week after the final dose [see Use in Specific Populations (8.2)].
Drug Interactions
Advise patients to inform their healthcare provider of all concomitant medications, including prescription medicines, over-the-counter drugs and herbal products [see Drug Interactions (7)].
Dosing and Administration
Instruct patients to take 450 mg TEPMETKO once daily with food [see Dosage and Administration (2.2)].
Missed Dose
Advise patients that a missed dose of TEPMETKO can be taken as soon as remembered on the same day, unless the next dose is due within 8 hours. If vomiting occurs after taking a dose of TEPMETKO, advise patients to take the next dose at the scheduled time [see Dosage and Administration (2.2)].
Manufactured for:
EMD Serono, Inc.
Rockland, MA 02370
U.S.A.
TEPMETKO is a trademark of Merck KGaA,
Darmstadt, Germany