Caprelsa Drug Information

is indicated for the treatment of symptomatic or progressive medullary thyroid cancer in patients with unresectable locally advanced or metastatic disease. Use CAPRELSA in patients with indolent, asymptomatic or slowly progressing disease only after careful consideration of the treatment related risks of CAPRELSA. CAPRELSA is a kinase inhibitor indicated for the treatment of symptomatic or progressive medullary thyroid cancer in patients with unresectable locally advanced or metastatic disease. Use CAPRELSA in patients with indolent, asymptomatic or slowly progressing disease only after careful consideration of the treatment related risks of CAPRELSA.

Dosage Adjustment For Adverse Reactions

The 300 mg daily dose can be reduced to 200 mg (two 100 mg tablets) and then to 100 mg for Common Terminology Criteria for Adverse Events (CTCAE) Grade 3 or greater toxicities. Interrupt CAPRELSA for the following: Corrected QT interval, Fridericia (QTcF) greater than 500 ms: Resume at a reduced dose when the QTcF returns to less than 450 ms. CTCAE Grade 3 or greater toxicity: Resume at a reduced dose when the toxicity resolves or improves to CTCAE Grade 1. For recurrent toxicities, reduce the dose of CAPRELSA to 100 mg after resolution or improvement to CTCAE Grade 1 severity, if continued treatment is warranted.

Adverse events including QT interval prolongation should be monitored closely as they may not resolve fully until approximately three plasma half-lives of the drug. Monitor appropriately . For Patients with Renal Impairment Reduce the starting dose to 200 mg in patients with moderate (creatinine clearance ≥30 to <50 mL/min) renal impairment . For Patients with Hepatic Impairment CAPRELSA is not recommended for use in patients with moderate and severe hepatic impairment .

Clinical Trials 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. Patients with unresectable locally advanced or metastatic medullary thyroid cancer were treated with CAPRELSA 300 mg (n=231) or Placebo (n=99). The population exposed to CAPRELSA was 58% male, 94% white, and had a median age of 50 years. The data described below reflect a median exposure to CAPRELSA for 607 days.

The most commonly reported adverse drug reactions which occurred in >20% of CAPRELSA-treated patients and with a between-arm difference of ≥5% included, in order of decreasing frequency: diarrhea/colitis, rash, acneiform dermatitis, hypertension, nausea, headache, upper respiratory tract infection, decreased appetite, and abdominal pain. Among CAPRELSA-treated patients, dose interruption occurred in 109 (47%) and dose reduction occurred in 83 (36%). Adverse reactions led to study treatment discontinuation in 28 of 231 patients (12%) receiving CAPRELSA and in 3 of 99 patients (3.0%) receiving placebo. Adverse reactions leading to permanent discontinuation in 2 or more (≥0.9%) patients treated with CAPRELSA were: asthenia (1.7%), rash (1.7%), diarrhea (0.9%), fatigue (0.9%), pyrexia (0.9%), elevated creatinine (0.9%), QT prolongation (0.9%), and hypertension (0.9%). Table 1: Per-Patient Incidence of Selected Adverse Reactions Occurring at a Higher Incidence in CAPRELSA-Treated Patients During Randomized Treatment (Between-Arm Difference of ≥5% CTCAE version 3 was used to grade adverse events. ) System Organ Class CAPRELSA 300 mg Placebo Preferred Term N=231 N=99 All Grades (%) Grade 3 or 4 (%) All Grades (%) Grade 3 or 4 (%) Gastrointestinal Disorders Diarrhea/Colitis 57 11 27 2 Nausea 33 1 16 0 Abdominal Pain Includes abdominal pain, abdominal pain upper, lower abdominal pain, and abdominal discomfort. 21 3 11 0 Vomiting 15 1 7 0 Dyspepsia 11 0 4 0 Dry Mouth 9 0 3 0 Skin and Cutaneous Disorders Rash Includes rash, rash (erythematous, generalized, macular, maculopapular, papular, pruritic, and exfoliative), dermatitis, dermatitis bullous, generalized erythema, and eczema. 53 5 12 0 Dermatitis Acneiform/Acne 35 1 7 0 Dry Skin 15 0 5 0 Photosensitivity Reaction 13 2 0 0 Pruritus 11 1 4 0 Nail abnormalities Includes nail disorder, nail bed inflammation, nail bed tenderness, paronychia, nail bed infection, and nail infection. 9 0 0 0 Alopecia 8 N/A 0 N/A Vascular Disorders Hypertension/Hypertensive Crisis/Accelerated Hypertension 33 9 5 1 Nervous System Disorders Headache 26 1 9 0 Dysgeusia 8 0 3 0 General Disorders Fatigue Included in Table 1 due to the increased incidence of severe fatigue in the CAPRELSA group compared to the placebo group. 24 6 23 1 Infections Upper Respiratory Tract Infections Includes laryngitis, nasopharyngitis, pharyngitis, sinusitis, upper respiratory tract infection, acute sinusitis, rhinitis, and tracheitis. 23 0 16 0 Metabolic and Nutritional Disorders Decreased Appetite 21 4 12 0 Hypocalcemia 11 2 3 0 Investigations ECG QT Prolonged 69% had QT prolongation >450 ms and 7% had QT prolongation >500 ms by ECG using Fridericia correction. 14 8 1 1 Eye Disorders Corneal Abnormalities Includes corneal edema, corneal opacity, corneal dystrophy, corneal pigmentation, keratopathy, arcus lipoides, corneal deposits, and acquired corneal dystrophy. 13 0 1 0 Blurred Vision 9 0 1 0 Renal Disorders Proteinuria 10 0 2 0 Psychiatric Disorders Depression 10 2 3 0 Endocrine Disorders Hypothyroidism 6 0 0 0 Musculoskeletal Disorders Muscle Spasms 6 0 1 0 Other Clinically Relevant Adverse Effects In patients with medullary thyroid cancer treated with CAPRELSA or placebo (NCT00410761), clinically important uncommon adverse drug reactions included pancreatitis (0.4% vs 0%), intestinal perforation (0.4% vs 0%), and heart failure (0.9% vs 0%). Blurred vision was commonly reported (9% vs 1%) in this trial.

Scheduled slit lamp examinations revealed corneal opacities (vortex keratopathies) in treated patients, which can lead to halos and decreased visual acuity. Perform ophthalmologic examination, including slit lamp examination, in patients who report visual changes. Grade 1 to 2 bleeding events were also more common in patients receiving CAPRELSA compared to placebo (14% vs 7%). Table 2: Per-Patient Incidence of Selected Laboratory Abnormalities in Patients with MTC Occurring at a Higher Incidence in CAPRELSA-Treated Patients (Between-Arm Difference of ≥5% CTCAE version 3 was used to grade laboratory abnormalities. ) Laboratory Abnormalities CAPRELSA 300 mg N=231 Placebo N=99 All Grades (%) Grade 3 or 4 (%) All Grades (%) Grade 3 or 4 (%) Chemistries Hypocalcemia 57 6 25 3 ALT Increased 51 2 19 0 Hypoglycemia 24 0 7 1 Creatinine Increased 16 0 1 0 Hypomagnesemia 7 <1 2 0 Hematologic Neutropenia 10 <1 5 2 Thrombocytopenia 9 0 3 0 No patient with a Grade 3 to 4 ALT elevation had a concomitant increase in bilirubin in the MTC study.

Postmarketing Experience

The following adverse reactions have been identified during post-approval use of CAPRELSA. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Vascular disorders : Arterial (including aortic) aneurysms, dissections, and rupture Musculoskeletal and connective tissue disorders : Osteonecrosis General disorders: Impaired wound healing

Effect of

CYP3A4 Inducers on CAPRELSA Rifampicin, a strong CYP3A4 inducer, decreased vandetanib plasma concentrations. Avoid concomitant use of known strong CYP3A4 inducers during CAPRELSA therapy. Avoid concomitant use of St.

John's wort because it can decrease vandetanib exposure unpredictably .

Effect of

CAPRELSA on OCT2 Transporter CAPRELSA increased plasma concentrations of metformin that is transported by the organic cation transporter type 2 (OCT2). Use caution and closely monitor for toxicities when administering CAPRELSA with drugs that are transported by OCT2 .

Effect of

CAPRELSA on Digoxin CAPRELSA increased plasma concentrations of digoxin. Use caution and closely monitor for toxicities when administering CAPRELSA with digoxin .

Drugs that Prolong the QT Interval

Avoid concomitant use of CAPRELSA with agents that may prolong the QT interval .

Pregnancy Risk Summary Based on its mechanism of action and findings in animals, CAPRELSA can cause fetal harm when administered to a pregnant woman. There are no available human data on CAPRELSA use in pregnant women to inform a drug-associated risk. Vandetanib is embryotoxic, fetotoxic, and induced fetal malformations in rats at exposures less than or equal to those expected at the recommended human dose of 300 mg/day.

Advise patients of the potential risk to a fetus. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal data In reproductive toxicity studies, administration of vandetanib to female rats prior to mating and through the first week of pregnancy at a dose of 25 mg/kg/day (approximately equal to the human exposure at the 300 mg clinical dose based on C max ), there were increases in pre-implantation loss and post-implantation loss resulting in a reduction in the number of live embryos.

During organogenesis, vandetanib caused an increase in post-implantation loss, including occasional total litter loss at a dose of 25 mg/kg/day. At doses greater than 10 mg/kg/day (approximately 0.4 times the human C max at the 300 mg clinical dose) treatment with vandetanib resulted in increases in late embryofetal death and decreases in fetal birth weight. A no-effect level for malformations was not identified in this study.

Administration of vandetanib at doses greater than or equal to 1 mg/kg/day (approximately 0.03 times the human C max at the 300 mg clinical dose) resulted in dose dependent increases in both malformations of the heart vessels and skeletal variations including delayed ossification of the skull, vertebrae, and sternum, indicating delayed fetal development. In a rat prenatal and postnatal development study, at doses (1 and 10 mg/kg/day) producing mild maternal toxicity during gestation and/or lactation, vandetanib decreased pup survival and reduced postnatal pup growth. Reduced postnatal pup growth was associated with a delay in physical development.

Pediatric Use Safety and efficacy of CAPRELSA in pediatric patients have not been established.

Do not use in patients with congenital long QT syndrome . Do not use in patients with congenital long QT syndrome.

In the event of an overdose, monitor patients closely for QTc prolongation. Adverse events including QT interval prolongation should be monitored closely as they may not resolve fully until approximately three plasma half-lives of the drug.