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1 INDICATIONS AND USAGE COMETRIQ is indicated for the treatment of patients with progressive, metastatic medullary thyroid cancer (MTC). COMETRIQ is a kinase inhibitor indicated for the treatment of patients with progressive, metastatic medullary thyroid cancer (MTC). ( 1 )

2 DOSAGE AND ADMINISTRATION Recommended Dose: 140 mg orally, once daily. ( 2.1 ) Instruct patients not to eat for at least 2 hours before and at least 1 hour after taking COMETRIQ. ( 2.1 ) Do NOT substitute COMETRIQ capsules with cabozantinib tablets. ( 2.1 ) Hepatic Impairment: The recommended starting dose of COMETRIQ is 80 mg in patients with mild or moderate hepatic impairment. ( 2.1 ) 2.1 Recommended Dosage Do NOT substitute COMETRIQ capsules with cabozantinib tablets. The recommended daily dose of COMETRIQ is 140 mg once daily without food until disease progression or unacceptable toxicity. Instruct patients not to eat for at least 2 hours before and at least 1 hour after taking COMETRIQ. Swallow COMETRIQ capsules whole. Do not open COMETRIQ capsules. Do not take a missed dose within 12 hours of the next dose. Do not ingest foods (e.g., grapefruit, grapefruit juice) or nutritional supplements that are known to inhibit cytochrome P450 while taking COMETRIQ. 2.2 Dosage Modifications for Adverse Reactions Withhold COMETRIQ for NCI CTCAE Grade 4 hematologic adverse reactions, Grade 3 or greater non-hematologic adverse reactions, intolerable Grade 2 adverse reactions, or osteonecrosis of the jaw. Upon resolution/improvement of the adverse reaction (i.e., return to baseline or resolution to Grade 1), reduce the dose as follows: If previously receiving 140 mg daily dose, resume treatment at 100 mg daily If previously receiving 100 mg daily dose, resume treatment at 60 mg daily If previously receiving 60 mg daily dose, resume at 60 mg if tolerated, otherwise, discontinue COMETRIQ Permanently discontinue COMETRIQ for any of the following: development of gastrointestinal (GI) perforation or Grade 4 fistula severe hemorrhage acute myocardial infarction or arterial or venous thromboembolic events that require medical intervention nephrotic syndrome severe hypertension that cannot be controlled with anti-hypertensive therapy or Grade 4 hypertension reversible posterior…

12.2 Pharmacodynamics Cardiac Electrophysiology The effect of orally administered COMETRIQ 140 mg on QTc interval was evaluated in a randomized, double-blinded, placebo-controlled study in patients with MTC. A mean increase in QTcF of 10 - 15 ms was observed at 4 weeks after initiating COMETRIQ. A concentration-QTc relationship could not be definitively established. Changes in cardiac wave form morphology or new rhythms were not observed. No COMETRIQ-treated patients had a QTcF > 500 ms [see Clinical Studies (14) ] .

6 ADVERSE REACTIONS The following clinically significant adverse reactions are discussed elsewhere in the labeling: Perforations and Fistula [see Warnings and Precautions (5.1) ] Hemorrhage [see Warnings and Precautions (5.2) ] Thromboembolic Events [see Warnings and Precautions (5.3) ] Impaired Wound Healing [see Warnings and Precautions (5.4) ] Hypertension and Hypertensive Crisis [see Warnings and Precautions (5.5) ] Cardiac Failure [see Warnings and Precautions (5.6) ] Osteonecrosis of the Jaw [see Warnings and Precautions (5.7) ] Diarrhea [see Warnings and Precautions (5.8) ] Palmar-Plantar Erythrodysesthesia [see Warnings and Precautions (5.9) ] Proteinuria [see Warnings and Precautions (5.10) ] Reversible Posterior Leukoencephalopathy Syndrome [see Warnings and Precautions (5.11) ] Hypocalcemia [see Warnings and Precautions (5.13) ] The most common adverse reactions (≥ 25%) are diarrhea, stomatitis, palmar-plantar erythrodysesthesia (PPE), decreased weight, decreased appetite, nausea, fatigue, oral pain, hair color changes, dysgeusia, hypertension, abdominal pain, and constipation. The most common laboratory abnormalities (≥ 25%) are increased AST, increased ALT, lymphopenia, increased alkaline phosphatase, hypocalcemia, neutropenia, thrombocytopenia, hypophosphatemia, and hyperbilirubinemia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Exelixis, Inc. at 1-855-500-3935 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The safety of COMETRIQ was evaluated in 330 patients with progressive metastatic medullary thyroid cancer randomized to receive 140 mg COMETRIQ (n = 214) or placebo (n = 109) administered daily until disease progression or intolerable toxicity in…

4 CONTRAINDICATIONS None None. ( 4 )

5 WARNINGS AND PRECAUTIONS Perforations and Fistulas: Monitor for symptoms. Discontinue COMETRIQ for Grade 4 fistula or perforation. ( 5.1 ) Hemorrhage: Do not administer COMETRIQ if recent history of hemorrhage. ( 5.2 ) Thrombotic Events: Discontinue COMETRIQ for myocardial infarction or serious arterial or venous thromboembolic events. ( 5.3 ) Impaired Wound Healing: Withhold COMETRIQ for at least 3 weeks before elective surgery. Do not administer for at least 2 weeks following major surgery and until adequate wound healing. The safety of resumption of COMETRIQ after resolution of wound healing complications has not been established. ( 5.4 ) Hypertension and hypertensive crisis: Monitor blood pressure regularly. Interrupt for hypertension that is not adequately controlled with anti- hypertensive therapy. Discontinue COMETRIQ for hypertensive crisis or severe hypertension that cannot be controlled with anti-hypertensive therapy. ( 5.5 ) Cardiac Failure: Monitor patients for signs and symptoms of cardiac failure throughout treatment. ( 5.6 ) Osteonecrosis of the Jaw (ONJ): Withhold COMETRIQ for at least 3 weeks prior to invasive dental procedure and for development of ONJ. ( 5.7 ) Diarrhea: May be severe. Interrupt COMETRIQ immediately until diarrhea resolves or decreases to Grade 1. Recommend standard antidiarrheal treatments. ( 5.8 ) Palmar-Plantar Erythrodysesthesia (PPE): Interrupt COMETRIQ until PPE resolves or decreases to Grade 1. ( 5.9 ) Proteinuria: Monitor urine protein. Discontinue for nephrotic syndrome. ( 5.10 ) Reversible Posterior Leukoencephalopathy Syndrome (RPLS): Discontinue COMETRIQ. ( 5.11 ) Embryo-Fetal Toxicity: Can cause fetal harm. Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception. ( 5.12 , 8.1 , 8.3 ) Hypocalcemia: Monitor blood calcium levels and replace calcium as necessary during treatment. Withhold COMETRIQ and resume at reduced dose upon recovery or permanently discontinue…

7 DRUG INTERACTIONS Strong CYP3A4 Inhibitors: Reduce the COMETRIQ dosage. ( 2.2 , 7.1 ) Strong CYP3A4 Inducers: Increase the COMETRIQ dosage. ( 2.2 , 7.2 ) 7.1 Effect of CYP3A4 Inhibitors Administration of a strong CYP3A4 inhibitor, ketoconazole to healthy subjects increased single-dose plasma cabozantinib exposure by 38%. Avoid taking a strong CYP3A4 inhibitor (e.g., ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole) while taking COMETRIQ or reduce the dosage of COMETRIQ if concomitant use with strong CYP3A4 inhibitors cannot be avoided [see Dosage and Administration ( 2.2 ), Clinical Pharmacology ( 12.3 )] . Avoid ingestion of foods (e.g., grapefruit, grapefruit juice) or nutritional supplements that are known to inhibit cytochrome P450 while taking COMETRIQ. 7.2 Effect of CYP3A4 Inducers Administration of a strong CYP3A4 inducer, rifampin to healthy subjects decreased single-dose plasma cabozantinib exposure by 77%. Avoid chronic co-administration of strong CYP3A4 inducers (e.g., phenytoin, carbamazepine, rifampin, rifabutin, rifapentine, phenobarbital, St. John’s Wort) with COMETRIQ or increase the dosage of COMETRIQ if concomitant use with strong CYP3A4 inducers cannot be avoided [see Dosage and Administration ( 2.2 ), Clinical Pharmacology ( 12.3 )]. 7.3 Effect of MRP2 Inhibitors Concomitant administration of MRP2 inhibitors may increase the exposure to cabozantinib. Monitor patients for increased toxicity when MRP2 inhibitors (e.g., abacavir, adefovir, cidofovir, furosemide, lamivudine, nevirapine, ritonavir, probenecid, saquinavir, and tenofovir) are co-administered with COMETRIQ [see Clinical Pharmacology ( 12.3 )] .