Overview
11 DESCRIPTION JUXTAPID capsules contain lomitapide mesylate, a synthetic lipid-lowering agent for oral administration. The chemical name of lomitapide mesylate is N-(2,2,2-trifluoroethyl)-9-[4-[4-[[[4'a-(trifluoromethyl)[1,1'-biphenyl]-2-yl]carbonyl]amino]-1-piperidinyl]butyl]-9 H -fluorene-9-carboxamide, methanesulfonate salt.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action JUXTAPID directly binds and inhibits microsomal triglyceride transfer protein (MTP), which resides in the lumen of the endoplasmic reticulum, thereby preventing the assembly of apo B-containing lipoproteins in enterocytes and hepatocytes. This inhibits the synthesis of chylomicrons and VLDL. The inhibition of the synthesis of VLDL leads to reduced levels of plasma LDL-C. 12.2 Pharmacodynamics Effects on QT Interval At a concentration 23 times the C max of the maximum recommended dose, lomitapide does not prolong QTc to any clinically relevant extent. 12.3 Pharmacokinetics Lomitapide pharmacokinetics is approximately dose-proportional for oral single doses from 10 to 100 mg.
Indications
- 1 INDICATIONS AND USAGE JUXTAPID is indicated as an adjunct to a low-fat diet and exercise and other low density lipoprotein cholesterol (LDL-C) therapies to reduce LDL-C in adults and pediatric patients aged 2 years and older with homozygous familial hypercholesterolemia (HoFH). JUXTAPID is a microsomal triglyceride transfer protein inhibitor indicated as an adjunct to a low-fat diet and exercise and other low-density lipoprotein cholesterol (LDL-C) therapies, to reduce LDL-C in adult and pediatric patients aged 2 years and older with HoFH. ( 1 ).
Common Doses
- 2 mg
- 5 mg
- 10 mg
- 20 mg
Dosage
2 DOSAGE AND ADMINISTRATION Before treatment, measure ALT, AST, alkaline phosphatase, and total bilirubin; obtain a negative pregnancy test in females of reproductive potential; initiate a low-fat diet supplying
Black Box Warning
WARNING: RISK OF HEPATOTOXICITY JUXTAPID can cause elevations in transaminases. In the adult clinical trial, 10 (34%) of the 29 patients treated with JUXTAPID had at least one elevation in alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≥3 times the upper limit of normal (ULN). There were no concomitant clinically meaningful elevations of total bilirubin, international normalized ratio (INR), or alkaline phosphatase. In the pediatric clinical trial (5 to 17 years of age), 6 (14%) of the 43 patients experienced elevations in ALT and/or AST ≥ 3 times ULN.
Contraindications
- 4 CONTRAINDICATIONS JUXTAPID is contraindicated in the following conditions: Pregnancy [see Warnings and Precautions (5.3) and Use in Specific Populations (8.1) ] . Concomitant administration of JUXTAPID with moderate or strong CYP3A4 inhibitors, as this can increase JUXTAPID exposure [see Warnings and Precautions (5.6) , Drug Interactions (7.1) , and Clinical Pharmacology (12.3) ]. Patients with moderate or severe hepatic impairment (based on Child-Pugh category B or C) and patients with active liver disease, including unexplained persistent elevations of serum transaminases [see Warnings...
Side Effects
- 6 ADVERSE REACTIONS The following important adverse reactions have been observed and are discussed in detail in other sections of the label: Risk of hepatotoxicity [see Warnings and Precautions (5.1) ] Reduced absorption of fat-soluble vitamins, and serum fatty acids [see Warnings and Precautions (5.4) ] Gastrointestinal adverse reactions [see Warnings and Precautions (5.5) ] Most common adverse reactions in adult patients (incidence ≥10%) are diarrhea, nausea, dyspepsia, vomiting, and abdominal pain (6.1).
Interactions
- 7 DRUG INTERACTIONS CYP3A4 inhibitors increase exposure to lomitapide. Strong and moderate CYP3A4 inhibitors are contraindicated with JUXTAPID. Patients must avoid grapefruit juice ( 7.1 ). When administered with weak CYP3A4 inhibitors, the dose of JUXTAPID should be decreased by half. Follow the titration recommendations provided in the Full PI ( 7.2 ). Warfarin: Lomitapide increases plasma concentrations of warfarin. Monitor international normalized ratio (INR) regularly, especially with JUXTAPID dose adjustment ( 7.3 ). Simvastatin and lovastatin exposure increase with JUXTAPID.