SUTENT (Page 4 of 9)

6.2 Postmarketing Experience

The following adverse reactions have been identified during postapproval use of SUTENT. 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.

Blood and lymphatic system disorders: hemorrhage associated with thrombocytopenia 1.
Gastrointestinal disorders: esophagitis.
Hepatobiliary disorders: cholecystitis, particularly acalculous cholecystitis.
Immune system disorders: hypersensitivity reactions, including angioedema.
Infections and infestations: serious infection (with or without neutropenia)1. The infections most commonly observed with SUTENT include respiratory, urinary tract, skin infections, and sepsis/septic shock.
Musculoskeletal and connective tissue disorders: fistula formation, sometimes associated with tumor necrosis and/or regression 1; myopathy and/or rhabdomyolysis with or without acute renal failure 1.
Renal and urinary disorders: renal impairment and/or failure 1.
Respiratory disorders: pulmonary embolism 1, pleural effusion 1.
Skin and subcutaneous tissue disorders: pyoderma gangrenosum, including positive de-challenges.
Vascular disorders: arterial (including aortic) aneurysms, dissections 1, and rupture 1; arterial thromboembolic events 1. The most frequent events included cerebrovascular accident, transient ischemic attack, and cerebral infarction.
General disorders and administration site conditions: impaired wound healing.

1
including some fatalities

7 DRUG INTERACTIONS

7.1 Effect of Other Drugs on SUTENT

Strong CYP3A4 Inhibitors

Co-administration with strong CYP3A4 inhibitors may increase sunitinib plasma concentrations [see Clinical Pharmacology (12.3)]. Select an alternate concomitant medication with no or minimal enzyme inhibition potential. Consider a dose reduction for SUTENT when it is co-administered with strong CYP3A4 inhibitors [see Dosage and Administration (2.5)].

Strong CYP3A4 Inducers

Co-administration with strong CYP3A4 inducers may decrease sunitinib plasma concentrations [see Clinical Pharmacology (12.3)]. Select an alternate concomitant medication with no or minimal enzyme induction potential. Consider a dose increase for SUTENT when it must be co-administered with CYP3A4 inducers [see Dosage and Administration (2.5)].

7.2 Drugs that Prolong QT Interval

SUTENT is associated with QTc interval prolongation [see Warnings and Precautions (5.3), Clinical Pharmacology (12.2)]. Monitor the QT interval with ECGs more frequently in patients who require treatment with concomitant medications known to prolong the QT interval.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Risk Summary

Based on animal reproduction studies and its mechanism of action, SUTENT can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology (12.1)]. There are no available data in pregnant women to inform a drug-associated risk. In animal developmental and reproductive toxicology studies, oral administration of sunitinib to pregnant rats and rabbits throughout organogenesis resulted in teratogenicity (embryolethality, craniofacial and skeletal malformations) at 5.5 and 0.3 times the combined AUC (the combined systemic exposure of sunitinib plus its active metabolite) in patients administered the recommended daily doses (RDD) of 50 mg, respectively (see Data). Advise females of reproductive potential of the potential risk to a fetus.

The estimated background risk of major birth defects and miscarriage for the indicated populations are unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriages in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.

Data

Animal Data

In a female fertility and early embryonic development study, female rats were administered oral sunitinib (0.5, 1.5, 5 mg/kg/day) for 21 days prior to mating and for 7 days after mating. Embryolethality was observed at 5 mg/kg/day (approximately 5 times the combined AUC in patients administered the RDD of 50 mg).

In embryo-fetal developmental toxicity studies, oral sunitinib was administered to pregnant rats (0.3, 1.5, 3, 5 mg/kg/day) and rabbits (0.5, 1, 5, 20 mg/kg/day) during the period of organogenesis. In rats, embryolethality and skeletal malformations of the ribs and vertebrae were observed at the dose of 5 mg/kg/day (approximately 5.5 times the combined AUC in patients administered the RDD of 50 mg). No adverse fetal effects were observed in rats at doses ≤3 mg/kg/day (approximately 2 times the combined AUC in patients administered the RDD of 50 mg). In rabbits, embryolethality was observed at 5 mg/kg/day (approximately 3 times the combined AUC in patients administered the RDD of 50 mg), and craniofacial malformations (cleft lip and cleft palate) were observed at ≥1 mg/kg/day (approximately 0.3 times the combined AUC in patients administered the RDD of 50 mg).

Sunitinib (0.3, 1, 3 mg/kg/day) was evaluated in a pre- and postnatal development study in pregnant rats. Maternal body weight gains were reduced during gestation and lactation at doses ≥1 mg/kg/day (approximately 0.5 times the combined AUC in patients administered the RDD of 50 mg). At 3 mg/kg/day (approximately 2 times the combined AUC in patients administered the RDD of 50 mg), reduced neonate body weights were observed at birth and persisted in the offspring of both sexes during the preweaning period and in males during postweaning period. No adverse developmental effects were observed at doses ≤1 mg/kg/day.

8.2 Lactation

There is no information regarding the presence of sunitinib and its metabolites in human milk. Sunitinib and its metabolites were excreted in rat milk at concentrations up to 12-fold higher than in plasma (see Data). Because of the potential for serious adverse reactions in breastfed infants, advise women not to breastfeed during treatment with SUTENT and for at least 4 weeks after the last dose.

Data

Animal Data

In lactating female rats administered 15 mg/kg, sunitinib and its metabolites were excreted in milk at concentrations up to 12-fold higher than in plasma.

8.3 Females and Males of Reproductive Potential

SUTENT can cause fetal harm when administered to a pregnant woman [see Use in Specific Populations (8.1)].

Pregnancy Testing

Verify pregnancy status of females of reproductive potential prior to initiating treatment with SUTENT.

Contraception

Females

Advise females of reproductive potential to use effective contraception during treatment with SUTENT and for at least 4 weeks after the last dose.

Males

Based on findings in animal reproduction studies, advise males with female partners of reproductive potential to use effective contraception during treatment with SUTENT and for 7 weeks after the last dose.

Infertility

Based on findings in animals, SUTENT may impair male and female fertility [see Nonclinical Toxicology (13.1)].

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