rolapitant 90 MG Oral Tablet

INDICATIONS AND USAGE VARUBI ® is indicated in combination with other antiemetic agents in adults for the prevention of delayed nausea and vomiting associated with initial and repeat courses of emetogenic cancer chemotherapy, including, but not limited to, highly emetogenic chemotherapy. VARUBI is a substance P/neurokinin 1 (NK1) receptor antagonist indicated in combination with other antiemetic agents in adults for the prevention of delayed nausea and vomiting associated with initial and repeat courses of emetogenic cancer chemotherapy, including, but not limited to, highly emetogenic chemotherapy. ( 1 )

DOSAGE AND ADMINISTRATION The recommended dosage of VARUBI in adults in combination with a 5-HT 3 receptor antagonist and dexamethasone for the prevention of nausea and vomiting with emetogenic cancer chemotherapy is shown in Table 1 . There is no drug interaction between rolapitant and dexamethasone, so no dosage adjustment for dexamethasone is required. Administer a dexamethasone dose of 20 mg on Day 1 [see Clinical Pharmacology (12.3) ] . Administer VARUBI prior to the initiation of each chemotherapy cycle, but at no less than 2 week intervals. Administer VARUBI without regards to meals. Table 1: Recommended Dosing Regimen of VARUBI Day 1 Day 2 Day 3 Day 4 Prevention of Nausea and Vomiting Associated with Cisplatin-Based Highly Emetogenic Cancer Chemotherapy VARUBI 180 mg as a single dose orally within 2 hours prior to initiation of chemotherapy None Dexamethasone 20 mg; 30 min prior to initiation of chemotherapy 8 mg twice daily 8 mg twice daily 8 mg twice daily 5-HT 3 receptor antagonist See the prescribing information for the co-administered 5-HT 3 receptor antagonist for appropriate dosing information. None Prevention of Nausea and Vomiting Associated with Moderately Emetogenic Cancer Chemotherapy and Combinations of Anthracycline and Cyclophosphamide VARUBI 180 mg as a single dose orally within 2 hours prior to initiation of chemotherapy None Dexamethasone 20 mg; 30 min prior to initiation of chemotherapy None 5-HT 3 receptor antagonist See the prescribing information for the co-administered 5-HT 3 receptor antagonist for appropriate dosing information. See the prescribing information for the co-administered 5-HT 3 receptor antagonist for appropriate dosing information. Administer in combination with dexamethasone and a 5-HT 3 receptor antagonist; see full prescribing information for dosing information. ( 2 ) No dosage adjustment for dexamethasone is required. ( 2 ) The recommended dosage of VARUBI is 180 mg as a single dose orally within 2 hours prior to the initiation of chemotherapy on Day 1. ( 2 ) Administer VARUBI prior to the initiation of each chemotherapy cycle, but at no less than 2 week intervals. ( 2 ) Administer VARUBI without regards to meals. ( 2 )

WARNINGS AND PRECAUTIONS CYP2D6 Substrates : Rolapitant is a moderate inhibitor of CYP2D6 and significantly increases the plasma concentrations of CYP2D6 substrates for at least 28 days following single dose administration of VARUBI. Before starting VARUBI, consider if patients require: thioridazine or pimozide; if so, use an alternative antiemetic to VARUBI or an alternative to thioridazine or pimozide that is not metabolized by CYP2D6. other CYP2D6 substrates; if so, consult the prescribing information for the CYP2D6 substrate for additional information about interactions with CYP2D6 inhibitors. ( 4 , 5.1 , 7 ) 5.1 Interaction with CYP2D6 Substrates Rolapitant is a moderate inhibitor of CYP2D6. Exposure to dextromethorphan, a CYP2D6 substrate, following a single dose of rolapitant increased about 3-fold on Days 8 and Day 22. The inhibition of CYP2D6 persisted on Day 28 with a 2.3-fold increase in dextromethorphan (CYP2D6 substrate) concentrations, the last time point measured. The inhibitory effect of rolapitant on CYP2D6 is expected to persist beyond 28 days for an unknown duration following administration of VARUBI [see Drug Interactions (7) , Clinical Pharmacology (12.3) ] . Narrow Therapeutic Index Drugs (Thioridazine and Pimozide) VARUBI is contraindicated in patients taking CYP2D6 substrates with a narrow therapeutic index such as thioridazine and pimozide. Increased plasma concentrations of thioridazine and pimozide are associated with serious and/or life-threatening events of QT prolongation and Torsades de Pointes [see Contraindications (4) ] . Before starting treatment with VARUBI, consider whether patients require treatment with thioridazine or pimozide. If patients require these drugs, use an alternative antiemetic to VARUBI or an alternative to thioridazine or pimozide that is not metabolized by CYP2D6. Other Drugs VARUBI can also increase plasma concentrations of other CYP2D6 substrates for at least 28 days following administration of VARUBI and may result in adverse reactions. Before starting treatment with VARUBI, consult the prescribing information for CYP2D6 substrates to obtain additional information about interactions with CYP2D6 inhibitors.

CONTRAINDICATIONS VARUBI is contraindicated in patients taking CYP2D6 substrates with a narrow therapeutic index, such as thioridazine and pimozide. VARUBI can significantly increase the plasma concentrations of thioridazine and pimozide, which may result in QT prolongation and Torsades de Pointes [see Warnings and Precautions (5.1) ] . VARUBI is contraindicated in pediatric patients less than 2 years of age because of irreversible impairment of sexual development and fertility observed in juvenile rats at clinically relevant dosages [see Use in Specific Populations (8.4) ] . CYP2D6 substrates with a narrow therapeutic index (e.g., thioridazine and pimozide) ( 4 , 5.1 , 7 ) Pediatric patients less than 2 years of age because of irreversible impairment of sexual development and fertility in juvenile rats ( 4 , 8.4 )

Mechanism of Action Rolapitant is a selective and competitive antagonist of human substance P/NK1 receptors. Rolapitant does not have significant affinity for the NK2 or NK3 receptors or for a battery of other receptors, transporters, enzymes and ion channels. Rolapitant is also active in animal models of chemotherapy-induced emesis.