Trikafta
ELEXACAFTOR, TEZACAFTOR, AND IVACAFTOR
Indications and usage 1 INDICATIONS AND USAGE TRIKAFTA is indicated for the treatment of cystic fibrosis (CF) in adult and pediatric patients aged 2 years and older who have a clinical diagnosis of CF and who have at least one variant in the cystic fibrosis transmembrane conductance regulator ( CFTR ) gene that is either responsive based on clinical and/or in vitro data (see Table 6 ) or results in production of CFTR protein [see Clinical Pharmacology (12.1) ] .
If the patient's genotype is unknown, an FDA-cleared CF genetic test should be used to confirm the presence of at least one variant in the CFTR gene that is either responsive based on clinical and/or in vitro data or results in production of CFTR protein.
Structured Monograph
Clinical summary
Indications and usage 1 INDICATIONS AND USAGE TRIKAFTA is indicated for the treatment of cystic fibrosis (CF) in adult and pediatric patients aged 2 years and older who have a clinical diagnosis of CF and who have at least one variant in the cystic fibrosis transmembrane conductance regulator ( CFTR ) gene that is either responsive based on clinical and/or in vitro data (see Table 6 ) or results in production of CFTR protein [see Clinical Pharmacology (12.1) ] . If the patient's genotype is unknown, an FDA-cleared CF genetic test should be used to confirm the presence of at least one variant in the CFTR gene that is either responsive based on clinical and/or in vitro data or results in production of CFTR protein. TRIKAFTA is a combination of ivacaftor, a CFTR potentiator, tezacaftor, and elexacaftor indicated for the treatment of cystic fibrosis (CF) in adult and pediatric patients aged 2 years and older who have a clinical diagnosis of CF and who have at least one variant in the CFTR gene that is either responsive based on clinical and/or in vitro data or results in production of CFTR protein. ( 1 , 12.1 ) If the patient's genotype is unknown, an FDA-cleared CF genetic test should be used to confirm the presence of at least one variant in the CFTR gene that is either responsive based on clinical and/or in vitro data or results in production of CFTR protein. ( 1 ) Dosage and administration 2 DOSAGE AND ADMINISTRATION Prior to initiating TRIKAFTA obtain liver function tests (ALT, AST, alkaline phosphatase, and bilirubin) in all patients. Monitor liver function tests every month during the first 6 months of treatment, then every 3 months during the next 12 months, then at least annually thereafter. ( 2.1 , 5.1) Recommended Dosage for Adult and Pediatric Patients Aged 2 Years and Older (with fat-containing food ( 2.2 , 12.3 )) Age Weight Morning Dose Evening Dose 2 to less than 6 years Less than 14 kg One packet containing elexacaftor 80 mg/tezacaftor 40 mg/ivacaftor 60 mg oral granules One packet containing ivacaftor 59.5 mg oral granules 14 kg or more One packet containing elexacaftor 100 mg/tezacaftor 50 mg/ivacaftor 75 mg oral granules One packet containing ivacaftor 75 mg oral granules 6 to less than 12 years Less than 30 kg Two tablets, each containing elexacaftor 50 mg/tezacaftor 25 mg/ivacaftor 37.5 mg One tablet of ivacaftor 75 mg 30 kg or more Two tablets, each containing elexacaftor 100 mg/tezacaftor 50 mg/ivacaftor 75 mg One tablet of ivacaftor 150 mg 12 years and older - Two tablets, each containing elexacaftor 100 mg/tezacaftor 50 mg/ivacaftor 75 mg One tablet of ivacaftor 150 mg Should not be used in patients with severe hepatic impairment. Use not recommended in patients with moderate hepatic impairment unless the benefit outweighs the risk. Reduce dose if used in patients with moderate hepatic impairment. Liver function tests should be closely monitored. ( 2.3 , 5.1 , 6 , 8.7 , 12.3 ) See full prescribing information for dosage modifications due to drug interactions with TRIKAFTA. ( 2.4 , 5.6 , 7.1 , 12.3 ) 2.1 Recommended Laboratory Testing Prior to TRIKAFTA Initiation and During Treatment Prior to initiating TRIKAFTA, obtain liver function tests (ALT, AST, alkaline phosphatase, and bilirubin) for all patients. Monitor liver function tests every month during the first 6 months of treatment, then every 3 months for the next 12 months, then at least annually thereafter. Consider more frequent monitoring for patients with a history of liver disease or liver function test elevations at baseline [see Warnings and Precautions (5.1) and Use in Specific Populations (8.7) ] . 2.2 Recommended Dosage in Adults and Pediatric Patients Aged 2 Years and Older Recommended dosage for adult and pediatric patients aged 2 years and older is provided in Table 1. Administer TRIKAFTA tablets (swallow the tablets whole) or oral granules orally with fat-containing food, in the morning and in the evening approximately 12 hours apart. Examples of meals or snacks that contain fat are those prepared with butter or oils or those containing eggs, peanut butter, cheeses, nuts, whole milk, or meats [see Clinical Pharmacology (12.3) ] . Administer each dose of TRIKAFTA oral granules immediately before or after ingestion of fat-containing food. Mix entire contents of each packet of oral granules with one teaspoon (5 mL) of age-appropriate soft food or liquid that is at or below room temperature. Some examples of soft food or liquids include pureed fruits or vegetables, yogurt, applesauce, water, milk, or juice. Once mixed, the product should be consumed completely within one hour. Table 1: Recommended Dosage of TRIKAFTA for Adult and Pediatric Patients Aged 2 Years and Older Age Weight Oral Morning Dose Oral Evening Dose 2 to less than 6 years Less than 14 kg One packet (containing elexacaftor 80 mg/tezacaftor 40 mg/ivacaftor 60 mg) oral granules One packet (containing ivacaftor 59.5 mg) oral granules 14 kg or more One packet
Boxed Warning
WARNING: DRUG-INDUCED LIVER INJURY AND LIVER FAILURE TRIKAFTA can cause serious and potentially fatal drug-induced liver injury. Cases of liver failure leading to transplantation and death have been reported in patients with and without a history of liver disease taking TRIKAFTA, in both clinical trials and the postmarketing setting [see Adverse Reactions (6) ]. Liver injury has been reported within the first month of therapy and up to 15 months following initiation of TRIKAFTA . Assess liver function tests (ALT, AST, alkaline phosphatase, and bilirubin) in all patients prior to initiating TRIKAFTA. Assess liver function tests every month during the first 6 months of treatment, then every 3 months for the next 12 months, then at least annually thereafter. Consider more frequent monitoring for patients with a history of liver disease or liver function test elevations at baseline [see Dosage and Administration (2.1) , Warnings and Precautions (5.1) , Adverse Reactions (6) and Use in Specific Populations (8.7) ] . Interrupt TRIKAFTA for significant elevations in liver function tests or in the event of signs or symptoms of liver injury. Consider referral to a hepatologist. Follow patients closely with clinical and laboratory monitoring until abnormalities resolve. If abnormalities resolve, resume treatment only if the benefit is expected to outweigh the risk. Closer monitoring is advised after resuming TRIKAFTA [see Warnings and Precautions (5.1) ] . TRIKAFTA should not be used in patients with severe hepatic impairment (Child-Pugh Class C). TRIKAFTA is not recommended in patients with moderate hepatic impairment (Child-Pugh Class B). If used, use with caution at a reduced dosage and monitor patients closely [see Dosage and Administration (2.3) , Warnings and Precautions (5.1) , Adverse Reactions (6) , Use in Specific Populations (8.7) and Clinical Pharmacology (12.3) ] . WARNING: DRUG-INDUCED LIVER INJURY AND LIVER FAILURE See full prescribing information for complete boxed warning. TRIKAFTA can cause serious and potentially fatal drug-induced liver injury. Liver failure leading to transplantation and death has been reported. ( 5.1 , 6 ) Assess liver function tests (ALT, AST, alkaline phosphatase, bilirubin) in all patients prior to initiating TRIKAFTA. ( 2.1 , 5.1 ) Monitor liver function tests (ALT, AST, alkaline phosphatase, bilirubin) every month for the first 6 months of treatment, then every 3 months for the next 12 months, then at least annually. ( 2.1 , 5.1 ) Interrupt TRIKAFTA for significant elevations in liver function tests or signs or symptoms of liver injury. Follow patients closely with clinical and laboratory monitoring until abnormalities resolve. ( 5.1 ) Resume TRIKAFTA if abnormalities resolve and only if the benefit is expected to outweigh the risk. ( 5.1 ) TRIKAFTA should not be used in patients with severe hepatic impairment (Child-Pugh Class C). TRIKAFTA is not recommended in patients with moderate hepatic impairment (Child-Pugh Class B). ( 2.3 , 5.1 , 8.7 , 12.3 )
Monitoring
- • 5 WARNINGS AND PRECAUTIONS Drug-induced liver injury and liver failure : TRIKAFTA can cause serious and potentially fatal drug-induced liver injury.
- • Assess liver function tests (ALT, AST, alkaline phosphatase, bilirubin) in all patients prior to initiating and throughout treatment with TRIKAFTA.
- • Interrupt TRIKAFTA in the event of significant elevations in liver function tests or signs or symptoms of liver injury.
- • TRIKAFTA should not be used in patients with severe hepatic impairment (Child-Pugh Class C).
Interaction Notes
- • 7 DRUG INTERACTIONS Strong CYP3A inducers: Avoid concomitant use.
- • ( 5.5 , 7.1 , 12.3 ) Strong or moderate CYP3A inhibitors: Reduce TRIKAFTA dosage when used concomitantly.
- • Avoid food or drink containing grapefruit.
- • ( 2.4 , 5.6 , 7.1 , 12.3 ) 7.1 Effect of Other Drugs and Grapefruit on TRIKAFTA Strong CYP3A Inducers Concomitant use of TRIKAFTA with strong CYP3A inducers is not recommended.