Everolimus

12.1 Mechanism of Action Everolimus is an inhibitor of mammalian target of rapamycin (mTOR), a serine-threonine kinase, downstream of the PI3K/AKT pathway. The mTOR pathway is dysregulated in several human cancers and in tuberous sclerosis complex (TSC). Everolimus binds to an intracellular protein, FKBP-12, resulting in an inhibitory complex formation with mTOR complex 1 (mTORC1) and thus inhibition of mTOR kinase activity. Everolimus reduced the activity of S6 ribosomal protein kinase (S6K1) and eukaryotic initiation factor 4E-binding protein (4E-BP1), downstream effectors of mTOR, involved in protein synthesis. S6K1 is a substrate of mTORC1 and phosphorylates the activation domain 1 of the estrogen receptor which results in ligand-independent activation of the receptor. In addition, everolimus inhibited the expression of hypoxia-inducible factor (e.g., HIF-1) and reduced the expression of vascular endothelial growth factor (VEGF). Inhibition of mTOR by everolimus has been shown to reduce cell proliferation, angiogenesis, and glucose uptake in in vitro and/or in vivo studies. Constitutive activation of the PI3K/Akt/mTOR pathway can contribute to endocrine resistance in breast cancer. In vitro studies show that estrogen-dependent and HER2+ breast cancer cells are sensitive to the inhibitory effects of everolimus, and that combination treatment with everolimus and Akt, HER2, or aromatase inhibitors enhances the anti-tumor activity of everolimus in a synergistic manner. Two regulators of mTORC1 signaling are the oncogene suppressors tuberin-sclerosis complexes 1 and 2 ( TSC1, TSC2 ). Loss or inactivation of either TSC1 or TSC2 leads to activation of downstream signaling. In TSC, a genetic disorder, inactivating mutations in either the TSC1 or the TSC2 gene lead to hamartoma formation throughout the body as well as seizures and epileptogenesis. Overactivation of mTOR results in neuronal dysplasia, aberrant axonogenesis and dendrite formation, increased excitatory syna

1. INDICATIONS AND USAGE Everolimus tablets are a kinase inhibitor indicated for the treatment of: Postmenopausal women with advanced hormone receptor-positive, HER2-negative breast cancer in combination with exemestane after failure of treatment with letrozole or anastrozole. ( 1.1 ) Adults with progressive neuroendocrine tumors of pancreatic origin (PNET) and adults with progressive, well-differentiated, non-functional neuroendocrine tumors (NET) of gastrointestinal (GI) or lung origin that are unresectable, locally advanced or metastatic. Limitations of Use: Everolimus tablets are not indicated for the treatment of patients with functional carcinoid tumors. ( 1.2 ) Adults with advanced renal cell carcinoma (RCC) after failure of treatment with sunitinib or sorafenib. ( 1.3 ) Adults with renal angiomyolipoma and tuberous sclerosis complex (TSC), not requiring immediate surgery. ( 1.4 ) Everolimus tablets and everolimus tablets for oral suspension are kinase inhibitors indicated for the treatment of adult and pediatric patients aged 1 year and older with TSC who have subependymal giant cell astrocytoma (SEGA) that requires therapeutic intervention but cannot be curatively resected. ( 1.5 ) Everolimus tablets for oral suspension is a kinase inhibitor indicated for the adjunctive treatment of adult and pediatric patients aged 2 years and older with TSC-associated partial-onset seizures. ( 1.6 ) 1.1 Hormone Receptor-Positive, HER2-Negative Breast Cancer Everolimus tablets are indicated for the treatment of postmenopausal women with advanced hormone receptor-positive, HER2-negative breast cancer in combination with exemestane, after failure of treatment with letrozole or anastrozole. 1.2 Neuroendocrine Tumors (NET) Everolimus tablets are indicated for the treatment of adult patients with progressive neuroendocrine tumors of pancreatic origin (PNET) with unresectable, locally advanced or metastatic disease. Everolimus tablets are indicated for the treatment of adult pat

2. DOSAGE AND ADMINISTRATION Do not combine everolimus tablets and everolimus tablets for oral suspension to achieve the total daily dose. ( 2.1 ) Modify the dose for patients with hepatic impairment or for patients taking drugs that inhibit or induce P-glycoprotein (P-gp) and CYP3A4. ( 2.1 ) Breast Cancer: 10 mg orally once daily. ( 2.2 ) NET: 10 mg orally once daily. ( 2.3 ) RCC: 10 mg orally once daily. ( 2.4 ) TSC-Associated Renal Angiomyolipoma: 10 mg orally once daily. ( 2.5 ) TSC-Associated SEGA: 4.5 mg/m 2 orally once daily; adjust dose to attain trough concentrations of 5-15 ng/mL. ( 2.6 , 2.8 ) TSC-Associated Partial-Onset Seizures: 5 mg/ m 2 orally once daily; adjust dose to attain trough concentrations of 5-­15 ng/mL. ( 2.7 , 2.8 ) 2.1 Important Dosage Information Everolimus tablets and everolimus tablets for oral suspension are two different dosage forms. Select the recommended dosage form based on the indication [see Indications and Usage (1) ] . Do not combine everolimus tablets and everolimus tablets for oral suspension to achieve the total dose. Modify the dosage for patients with hepatic impairment or for patients taking drugs that inhibit or induce P-glycoprotein (P-gp) and CYP3A4 [see Dosage and Administration (2.10 , 2.11 , 2.12) ]. 2.2 Recommended Dosage for Hormone Receptor-Positive, HER2-Negative Breast Cancer The recommended dosage of everolimus tablets is 10 mg orally once daily until disease progression or unacceptable toxicity. 2.3 Recommended Dosage for Neuroendocrine Tumors (NET) The recommended dosage of everolimus tablets is 10 mg orally once daily until disease progression or unacceptable toxicity. 2.4 Recommended Dosage for Renal Cell Carcinoma (RCC) The recommended dosage of everolimus tablets is 10 mg orally once daily until disease progression or unacceptable toxicity. 2.5 Recommended Dosage for Tuberous Sclerosis Complex (TSC)-Associated Renal Angiomyolipoma The recommended dosage of everolimus tablets is 10 mg orally once daily until disease progression or unacceptable toxicity. 2.6 Recommended Dosage for Tuberous Sclerosis Complex (TSC)-Associated Subependymal Giant Cell Astrocytoma (SEGA) The recommended starting dosage of everolimus tablets/everolimus tablets for oral suspension is 4.5 mg/m 2 orally once daily until disease progression or unacceptable toxicity [see Dosage and Administration (2.8) ]. 2.7 Recommended Dosage for Tuberous Sclerosis Complex (TSC)-Associated Partial-Onset Seizures The recommended starting dosage of everolimus tablets for oral suspension is 5 mg/m2 orally once daily until disease progression or unacceptable toxicity [see Dosage and Administration (2.8) ]. 2.8 Therapeutic Drug Monitoring (TDM) and Dose Titration for Tuberous Sclerosis Complex (TSC)-Associated Subependymal Giant Cell Astrocytoma (SEGA) and TSC-Associated Partial-Onset Seizures Monitor everolimus whole blood trough concentrations at time points recommended in Table 1. Titrate the dose to attain trough concentrations of 5 ng/mL to 15 ng/mL. Adjust the dose using the following equation: New dose The maximum dose increment at any titration must not exceed 5 mg. Multiple dose titrations may be required to attain the target trough concentration. = current dose × (target concentration divided by current concentration) When possible, use the same assay and laboratory for TDM throughout treatment. Table 1: Recommended Timing of Therapeutic Drug Monitoring Event When to Assess Trough Concentrations After Event Abbreviation: P-gp, P-glycoprotein. Initiation of everolimus tablets/everolimus tablets for oral suspension 1 to 2 weeks Modification of everolimus tablets/everolimus tablets for oral suspension dose 1 to 2 weeks Switch between everolimus tablets/everolimus tablets for oral suspension 1 to 2 weeks Initiation or discontinuation of P-gp and moderate CYP3A4 inhibitor 2 weeks Initiation or discontinuation of P-gp and strong CYP3A4 inducer 2 weeks Change in hepatic function 2 weeks Stable dose with changing body surface area (BSA) Every 3 to 6 months Stable dose with stable BSA Every 6 to 12 months 2.9 Dosage Modifications for Adverse Reactions Table 2 summarizes recommendations for dosage modifications of everolimus tablets/everolimus tablets for oral suspension for the management of adverse reactions. Table 2: Recommended Dosage Modifications for Everolimus Tablets/Everolimus Tablets for Oral Suspension for Adverse Reactions Adverse Reaction Severity Dosage Modification Non-infectious pneumonitis [see Warnings and Precautions (5.1) ] Grade 2 Withhold until improvement to Grade 0 or 1. Resume at 50% of previous dose; change to every other day dosing if the reduced dose is lower than the lowest available strength. Permanently discontinue if toxicity does not resolve or improve to Grade 1 within 4 weeks. Grade 3 Withhold until improvement to Grade 0 or 1. Resume at 50% of previous dose; change to every other day dosing if the reduced dose is lower than the lowest available strength. I

6. ADVERSE REACTIONS The following serious adverse reactions are described elsewhere in the labeling: Non-Infectious Pneumonitis [see Warnings and Precautions (5.1) ] Infections [see Warnings and Precautions (5.2) ] Severe Hypersensitivity Reactions [see Warnings and Precautions (5.3) ] Angioedema with Concomitant Use of ACE inhibitors [see Warnings and Precautions (5.4) ] Stomatitis [see Warnings and Precautions (5.5) ] Renal Failure [see Warnings and Precautions (5.6) ] Impaired Wound Healing [see Warnings and Precautions (5.7) ] Metabolic Disorders [see Warnings and Precautions (5.9) ] Myelosuppression [see Warnings and Precautions (5.10) ] Radiation Sensitization and Radiation Recall [see Warnings and Precautions (5.12) ] Breast cancer, NET, RCC: Most common adverse reactions (incidence ≥ 30%) include stomatitis, infections, rash, fatigue, diarrhea, edema, abdominal pain, nausea, fever, asthenia, cough, headache, and decreased appetite. ( 6.1 ) TSC-Associated Renal Angiomyolipoma: Most common adverse reaction (incidence ≥ 30%) is stomatitis. ( 6.1 ) TSC-Associated SEGA: Most common adverse reactions (incidence ≥ 30%) are stomatitis and respiratory tract infection. ( 6.1 ) TSC-Associated Partial-Onset Seizures: Most common adverse reaction (incidence ≥ 30%) is stomatitis. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Breckenridge Pharmaceutical, Inc. at 1-800-367-3395 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, the adverse reaction rates observed cannot be directly compared to rates in other trials and may not reflect the rates observed in clinical practice. Hormone Receptor-Positive, HER2-Negative Breast Cancer The safety of everolimus tablets (10 mg orally once daily) in combination with exemestane (25 mg orally once daily) (n = 485) vs. placebo in combination with exemestane (n = 239) was evaluated in a randomized, controlled trial (BOLERO-2) in patients with advanced or metastatic hormone receptor-positive, HER2-negative breast cancer. The median age of patients was 61 years (28 to 93 years), and 75% were White. The median follow-up was approximately 13 months. The most common adverse reactions (incidence ≥ 30%) were stomatitis, infections, rash, fatigue, diarrhea, and decreased appetite. The most common Grade 3-4 adverse reactions (incidence ≥ 2%) were stomatitis, infections, hyperglycemia, fatigue, dyspnea, pneumonitis, and diarrhea. The most common laboratory abnormalities (incidence ≥ 50%) were hypercholesterolemia, hyperglycemia, increased aspartate transaminase (AST), anemia, leukopenia, thrombocytopenia, lymphopenia, increased alanine transaminase (ALT), and hypertriglyceridemia. The most common Grade 3-4 laboratory abnormalities (incidence ≥ 3%) were lymphopenia, hyperglycemia, anemia, hypokalemia, increased AST, increased ALT, and thrombocytopenia. Fatal adverse reactions occurred in 2% of patients who received everolimus tablets. The rate of adverse reactions resulting in permanent discontinuation was 24% for the everolimus tablets arm. Dose adjustments (interruptions or reductions) occurred in 63% of patients in the everolimus tablets arm. Adverse reactions reported with an incidence of ≥ 10% for patients receiving everolimus tablets vs. placebo are presented in Table 6. Laboratory abnormalities are presented in Table 7. The median duration of treatment with everolimus tablets was 23.9 weeks; 33% were exposed to everolimus tablets for a period of ≥ 32 weeks. Table 6: Adverse Reactions Reported in ≥ 10% of Patients With Hormone Receptor-Positive Breast Cancer in BOLERO-2 Everolimus Tablets with Exemestane N = 482 Placebo with Exemestane N = 238 All Grades % Grade 3-4 % All Grades % Grade 3-4 % Grading according to NCI CTCAE Version 3.0. Gastrointestinal Stomatitis Includes stomatitis, mouth ulceration, aphthous stomatitis, glossodynia, gingival pain, glossitis, and lip ulceration. 67 8 No Grade 4 adverse reactions were reported. 11 0.8 Diarrhea 33 2 18 0.8 Nausea 29 0.4 28 1 Vomiting 17 1 12 0.8 Constipation 14 0.4 13 0.4 Dry mouth 11 0 7 0 General Fatigue 36 4 27 1 Edema peripheral 19 1 6 0.4 Pyrexia 15 0.2 7 0.4 Asthenia 13 2 4 0 Infections Infections Includes all reported infections, including but not limited to, urinary tract infections, respiratory tract (upper and lower) infections, skin infections, and gastrointestinal tract infections. 50 6 25 2 Investigations Weight loss 25 1 6 0 Metabolism and nutrition Decreased appetite 30 1 12 0.4 Hyperglycemia 14 5 2 0.4 Musculoskeletal and connective tissue Arthralgia 20 0.8 17 0 Back pain 14 0.2 10 0.8 Pain in extremity 9 0.4 11 2 Nervous system Dysgeusia 22 0.2 6 0 Headache 21 0.4 14 0 Psychiatric Insomnia 13 0.2 8 0 Respiratory, thoracic and mediastinal Cough 24 0.6 12 0 Dyspnea 21 4 11 1 Epistaxis 17 0 1 0 Pneumonitis Includes pneumonitis, interstitial lung disease, lung infiltration, and pulmonary fibrosis. 19 4 0.4 0 Skin

7. DRUG INTERACTIONS P-gp and strong CYP3A4 inhibitors: Avoid concomitant use. ( 2.11 , 7.1 ) P-gp and moderate CYP3A4 inhibitors: Reduce the dose as recommended. ( 2.11 , 7.1 ) P-gp and strong CYP3A4 inducers: Increase the dose as recommended. ( 2.12 , 7.1 ) 7.1 Effect of Other Drugs on Everolimus Tablets/Everolimus Tablets for Oral Suspension Inhibitors Avoid the concomitant use of P-gp and strong CYP3A4 inhibitors [see Dosage and Administration (2.11) , Clinical Pharmacology (12.3) ] . Reduce the dose for patients taking everolimus tablets/everolimus tablets for oral suspension with a P-gp and moderate CYP3A4 inhibitor as recommended [see Dosage and Administration (2.11) , Clinical Pharmacology (12.3) ] . Inducers Increase the dose for patients taking everolimus tablets/everolimus tablets for oral suspension with a P-gp and strong CYP3A4 inducer as recommended [see Dosage and Administration (2.12) , Clinical Pharmacology (12.3) ] . 7.2 Effects of Combination Use of Angiotensin Converting Enzyme (ACE) Inhibitors Patients taking concomitant ACE inhibitors with everolimus tablets/everolimus tablets for oral suspension may be at increased risk for angioedema. Avoid the concomitant use of ACE inhibitors with everolimus tablets/everolimus tablets for oral suspension [see Warnings and Precautions (5.4) ].