2.1 Important Safety Information

Verify pregnancy status of females of reproductive potential within 7 days prior to initiating ERIVEDGE [see Use in Specific Populations (8.1, 8.3)].

2.2 Recommended Dosage

The recommended dosage of ERIVEDGE is 150 mg taken orally once daily, with or without food, until disease progression or until unacceptable toxicity.

Swallow capsules whole. Do not open or crush capsules.

If a dose of ERIVEDGE is missed, resume dosing with the next scheduled dose.

2.3 Dosage Modifications for Adverse Reactions

Withhold ERIVEDGE for up to 8 weeks for intolerable adverse reactions until improvement or resolution. Treatment durations shorter than 8 weeks prior to interruptions have not been studied.

Permanently discontinue ERIVEDGE if patients experience severe cutaneous adverse reactions (SCARs) including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), or drug reaction with eosinophilia and systemic symptoms (DRESS) [see Warnings and Precautions (5.2)].

Interrupt ERIVEDGE for severe or intolerable musculoskeletal adverse reactions. Permanently discontinue ERIVEDGE for recurrent, severe or intolerable musculoskeletal adverse reactions [see Warnings and Precautions (5.3)].

5.1 Embryo-Fetal Toxicity

Based on its mechanism of action, ERIVEDGE can cause embryo-fetal death or severe birth defects when administered to a pregnant woman. In animal reproduction studies, vismodegib was embryotoxic, fetotoxic, and teratogenic at maternal exposures lower than the human exposures at the recommended dose of 150 mg once daily [see Use in Specific Populations (8.1)].

5.2 Severe Cutaneous Adverse Reactions

Severe cutaneous adverse reactions (SCARs), including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN) and drug reaction with eosinophilia and systemic symptoms (DRESS), which can be life-threatening or fatal, have been reported during treatment with ERIVEDGE [see Adverse Reactions (6.2)].

Permanently discontinue ERIVEDGE in patients with these reactions [see Dosage and Administration (2.3)].

5.3 Musculoskeletal Adverse Reactions

Musculoskeletal adverse reactions, which may be accompanied by serum creatine phosphokinase (CPK) elevations, have occurred with ERIVEDGE and other drugs which inhibit the hedgehog (Hh) pathway. In the pooled safety population in clinical trials of ERIVEDGE, musculoskeletal and connective tissue adverse reactions occurred in 78% of patients treated, with 7% (9/138) reported as Grade 3. The most frequent manifestations of musculoskeletal and connective tissue adverse reactions (all grades) reported were muscle spasms (72%) and arthralgias (16%). In a post-approval clinical trial of 1232 patients, Grade 3 or 4 elevations in serum CPK laboratory values occurred in 2.4% of the 453 patients who had any CPK measurement [see Adverse Reactions (6.1)].

Obtain baseline serum creatine phosphokinase (CPK) and creatinine levels and as clinically indicated (e.g., if muscle symptoms are reported). Depending on the severity of symptoms, temporary dose interruption or discontinuation may be required for musculoskeletal adverse reactions or serum CPK elevation [see Dosage and Administration (2.3)].

5.4 Premature Fusion of the Epiphyses

Premature fusion of the epiphyses has been reported in pediatric patients exposed to ERIVEDGE. In some cases, fusion progressed after drug discontinuation [see Use in Specific Populations (8.4)]. ERIVEDGE is not indicated for pediatric patients.

6.1 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 clinical practice.

The safety data described below reflect exposure to ERIVEDGE in 138 patients with advanced basal cell carcinoma (BCC) who received ERIVEDGE at doses ≥ 150 mg orally daily in four open-label, uncontrolled, dose-ranging or fixed single dose clinical trials [Study SHH3925g, SHH4437g, SHH4476g and SHH4610g]. The median age of these patients was 61 years (range 21 to 101 years), 100% were White (including Hispanics), and 64% were male. The median duration of treatment was approximately 10 months (range 21 days to 36 months); 111 patients received ERIVEDGE for 6 months or longer.

The most common adverse reactions (≥ 10%) were muscle spasms, alopecia, dysgeusia, weight loss, fatigue, nausea, diarrhea, decreased appetite, constipation, arthralgias, vomiting, and ageusia (Table 1).

6.2 Postmarketing Experience

The following adverse reactions have been identified during post-approval use of ERIVEDGE. 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.

Hepatobiliary disorders: Drug-induced liver injury

Skin and subcutaneous tissue disorders: Stevens-Johnson syndrome/toxic epidermal necrolysis, drug reaction with eosinophilia and systemic symptoms [see Warnings and Precautions (5.2)].

8.1 Pregnancy

8.2 Lactation

No data are available regarding the presence of vismodegib in human milk, the effects of the drug on the breastfed child, or the effects of the drug on milk production. Because of the potential for serious adverse reactions in breastfed infants from ERIVEDGE, advise women that breastfeeding is not recommended during therapy with ERIVEDGE and for 24 months after the final dose.

8.3 Females and Males of Reproductive Potential

8.4 Pediatric Use

The safety and effectiveness of ERIVEDGE have not been established in pediatric patients.

Premature fusion of the epiphyses [see Warnings and Precautions (5.3)] and precocious puberty have been reported in pediatric patients exposed to ERIVEDGE. In some cases, epiphyseal fusion progressed after drug discontinuation.

8.5 Geriatric Use

Clinical studies of ERIVEDGE did not include sufficient numbers of patients aged 65 and over to determine whether they respond differently from younger patients.

8.6 Hepatic Impairment

No dose adjustment is required in patients with hepatic impairment [see Clinical Pharmacology (12.3)].

8.7 Renal Impairment

No dose adjustment is required in patients with renal impairment [see Clinical Pharmacology (12.3)].

12.1 Mechanism of Action

Vismodegib is an inhibitor of the Hedgehog pathway. Vismodegib binds to and inhibits Smoothened, a transmembrane protein involved in Hedgehog signal transduction.

12.2 Pharmacodynamics

12.3 Pharmacokinetics

The pharmacokinetics of vismodegib were studied in healthy subjects and patients. Following daily oral dosing, the pharmacokinetics of vismodegib appear to be nonlinear with steady state achieved within 7 days. Increasing the dose from 150 mg to 540 mg (1 to 3.6 times the recommended dose) does not result in higher steady state plasma concentrations. Average plasma concentration of vismodegib at steady state (Css,avg) is ~23 µM following 150 mg once daily dose.

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

Carcinogenicity studies were performed in mice and rats. No carcinogenic potential was identified in either species. Vismodegib was not mutagenic in the in vitro bacterial reverse mutation (Ames) assay and was not clastogenic in the in vitro human chromosomal aberration assay in human peripheral blood lymphocytes or in the in vivo rat bone marrow micronucleus assay.

In a dedicated 26-week rat fertility study, no effects on male reproductive organs or fertility endpoints were observed at vismodegib doses of 100 mg/kg/day [approximately 1.3 times the human exposure (steady state AUC0-24hr) at the 150 mg clinical dose] either at the end of dosing or following a 16-week recovery phase. While there were increased numbers of degenerating germ cells and hypospermia in sexually immature dogs observed at ≥ 50 mg/kg/day in the 4-week general toxicity study, there were no effects on male reproductive organs in sexually mature rats and dogs, in the vismodegib general toxicity studies of up to 26-weeks.

In a female fertility study, treatment of rats with vismodegib at 100 mg/kg/day [approximately 1.2-times the human exposure (steady state AUC0-24hr) at the 150 mg clinical dose] for 26-weeks prior to mating resulted in decreased implantations, increased percent preimplantation loss, and decreased numbers of dams with viable embryos. No vismodegib-related changes in fertility were observed following a 16-week recovery period. In a 26-week general toxicity study in rats, decreased numbers of corpora lutea were observed at 100 mg/kg/day; the effect was not reversed by the end of an 8-week recovery period.

13.2 Animal Toxicology and/or Pharmacology

Neurologic effects characterized as limb or body tremors or twitching were observed in rats administered oral vismodegib for 4 weeks or longer at ≥ 50 mg/kg/day (approximately ≥ 0.4 times the human exposure (AUC) at the 150 mg clinical dose). These observations resolved upon discontinuation of dosing and were not associated with microscopic findings.

Store at room temperature 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].

Keep the bottle tightly closed to protect from moisture.

Embryo-Fetal Toxicity [see Warnings and Precautions (5.1), Use in Specific Populations (8.1, 8.3)]

Lactation

• Advise women not to breastfeed during therapy with ERIVEDGE and for 24 months after the final dose [see Use in Specific Populations (8.2)].

Severe Cutaneous Reactions

• Inform patients of the signs and symptoms of severe cutaneous reactions. Advise patients to contact their healthcare provider immediately for signs and symptoms of severe cutaneous reactions [see Warnings and Precautions (5.2)].

Muscle-related adverse reactions

• Advise patients starting therapy with ERIVEDGE of the risk of muscle-related adverse reactions. Advise patients to contact their healthcare provider immediately for any new unexplained muscle pain, tenderness, or weakness occurring during treatment or that persists after discontinuing ERIVEDGE [see Warnings and Precautions (5.3)]