Cometriq

— THERAPEUTIC CATEGORIES —
  • Pancreatic, thyroid, and other endocrine cancers

Cometriq Generic Name & Formulations

General Description

Cabozantinib 20mg, 80mg; caps.

Pharmacological Class

Kinase inhibitor.

How Supplied

140mg daily-dose carton—4 blister cards (each: 7x80mg and 21x20mg caps); 100mg daily-dose carton—4 blister cards (each: 7x80mg and 7x20mg caps); 60mg daily-dose carton—4 blister cards (each: 21x20mg caps)

Manufacturer

Generic Availability

NO

Mechanism of Action

Cabozantinib has shown in in vitro biochemical and/or cellular assays to inhibit the tyrosine kinase activity of MET, VEGFR-1, -2 and -3, AXL, RET, ROS1, TYRO3, MER, KIT, TRKB, FLT-3, and TIE-2. These receptor tyrosine kinases are involved in both normal cellular function and pathologic processes such as oncogenesis, metastasis, tumor angiogenesis, drug resistance, and maintenance of the tumor microenvironment.

Cometriq Indications

Indications

Progressive, metastatic medullary thyroid cancer (MTC).

Cometriq Dosage and Administration

Adult

Swallow whole. Take at least 1hr before or 2hrs after food. 140mg once daily until disease progression or unacceptable toxicity. Upon improvement of adverse reaction to Grade 1 or to baseline, reduce dose as follows: if previously on 140mg daily, resume at 100mg daily; if previously on 100mg daily, resume at 60mg daily; if previously on 60mg daily, resume at 60mg if tolerated, otherwise discontinue. Concomitant strong CYP3A4 inhibitors: if unavoidable, reduce daily dose by 40mg; resume dose used prior to starting inhibitor 2–3 days after discontinuation of inhibitor. Concomitant strong CYP3A4 inducers: if unavoidable, increase daily dose by 40mg; resume dose used prior to starting inhibitor 2–3 days after discontinuation of inhibitor. Mild to moderate hepatic impairment: initially 80mg daily. Max daily dose: 180mg.

Children

Not studied.

Cometriq Contraindications

Not Applicable

Cometriq Boxed Warnings

Not Applicable

Cometriq Warnings/Precautions

Warnings/Precautions

Not substitutable with cabozantinib tabs. Permanently discontinue if the following occurs: GI perforation, GI fistula (Grade 4), severe hemorrhage (Grade 3/4), acute MI, serious thromboembolic events that require medical intervention, hypertensive crisis or severe hypertension despite optimal medical management, nephrotic syndrome, reversible posterior leukoencephalopathy syndrome. Withhold for intolerable Grade 2 reactions, Grade 3/4 reactions, or osteonecrosis of the jaw. Recent history of hemorrhage (including hemoptysis, hematemesis, melena): do not administer. Monitor for GI perforations/fistulas. Monitor BP regularly; withhold for hypertension inadequately controlled with medical management; resume at reduced dose when resolved. Withhold therapy if intolerable Grade 2 diarrhea, unmanageable Grade 3/4 diarrhea, or intolerable Grade 2/3 palmar-plantar erythrodysesthesia (PPE) develops until improvement to Grade 1; resume at reduced dose. Monitor urine protein regularly. Perform oral exam prior to initiation and periodically during therapy. Impaired wound healing: withhold for ≥3 weeks prior to elective surgery (including dental); do not give for ≥2 weeks after major surgery and until adequate healing. Monitor blood calcium levels during therapy, and replace as needed; withhold and resume at reduced dose depending on severity. Severe hepatic impairment: not recommended. Severe renal impairment. Embryo-fetal toxicity. Advise females of reproductive potential to use effective contraception during and for 4 months after the last dose. Pregnancy: exclude status prior to initiation. Nursing mothers: not recommended (during and for 4 months after the last dose).

Cometriq Pharmacokinetics

Absorption

Median time to peak cabozantinib plasma concentrations ranged from 2–5 hours post-dose.

Cabozantinib Cmax and AUC values increased by 41% and 57%, respectively, following a high-fat meal relative to fasted conditions in healthy subjects.

Distribution

Volume of distribution: ~349 L. Plasma protein bound: ≥99.7%.

Metabolism

Hepatic (CYP3A4).

Elimination

Fecal (54%), renal (27%). Half-life (predicted): ~55 hours. Clearance at steady-state: 4.4 L/hr.

Cometriq Interactions

Interactions

Avoid concomitant strong CYP3A4 inhibitors (eg, ketoconazole, itraconazole, clarithromycin, atazanavir, nefazodone, saquinavir, telithromycin, ritonavir, indinavir, nelfinavir, voriconazole, grapefruit or grapefruit juice) and strong CYP3A4 inducers (eg, phenytoin, carbamazepine, rifampin, rifabutin, rifapentine, phenobarbital, St. John’s wort): see Adults dose. May be potentiated by MRP2 inhibitors (eg, abacavir, adefovir, cidofovir, furosemide, lamivudine, nevirapine, ritonavir, probenecid, saquinavir, tenofovir); monitor for increased toxicity.

Cometriq Adverse Reactions

Adverse Reactions

Diarrhea, stomatitis, palmar-plantar erythrodysesthesia syndrome, decreased weight/appetite, nausea, fatigue, oral pain, hair color changes, dysgeusia, hypertension, abdominal pain, constipation, increased AST, ALT, alkaline phosphatase, lymphopenia, hypocalcemia, neutropenia, thrombocytopenia, hypophosphatemia, hyperbilirubinemia.

Cometriq Clinical Trials

See Literature

Cometriq Note

Not Applicable

Cometriq Patient Counseling

See Literature

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