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Drug Safety-related Labeling Changes (SrLC)

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BARACLUDE (NDA-021798)

(ENTECAVIR)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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11/06/2019 (SUPPL-24)

Approved Drug Label (PDF)

6 Adverse Reactions

Newly added information:

Data from Long-Term Observational Study

Study AI463080 was a randomized, global, observational, open-label Phase 4 study to assess long- term risks and benefits of BARACLUDE (0.5 mg/day or 1 mg/day) treatment as compared to other standard-of-care HBV nucleos(t)ide analogues in subjects with chronic HBV infection.

A total of 12,378 patients were treated with BARACLUDE (n=6,216) or other HBV nucleos(t)ide treatment [non-entecavir (ETV)] (n=6,162). Patients were evaluated at baseline and subsequently every 6 months for up to 10 years. The principal clinical outcome events assessed during the study were overall malignant neoplasms, liver-related HBV disease progression, HCC, non-HCC malignant neoplasms, and death. The study showed that BARACLUDE was not significantly associated with an increased risk of malignant neoplasms compared to other standard-of-care HBV nucleos(t)ides, as assessed by either the composite endpoint of overall malignant neoplasms or the individual endpoint of non-HCC malignant neoplasms. The most commonly reported malignancy in both the BARACLUDE and non-ETV groups was HCC followed by gastrointestinal malignancies. The data also showed that long-term BARACLUDE use was not associated with a lower occurrence of HBV disease progression or a lower rate of death overall compared to other HBV nucleos(t)ides. The principal clinical outcome event assessments are shown in Table 6.

Table 6: Principal Analyses of Time to Adjudicated Events - Randomized Treated Subjects Newly added table; please refer to label for complete information.

Additions and/or revisions underlined:

Limitations of the study included population changes over the long-term follow-up period and more frequent post-randomization treatment changes in the non-ETV group. In addition, the study was underpowered to demonstrate a difference in the non-HCC malignancy rate because of the lower than expected background rate.

Adverse Reactions from Postmarketing Spontaneous Reports

The following adverse reactions have been reported during postmarketing use of BARACLUDE …

12/20/2018 (SUPPL-23)

Approved Drug Label (PDF)

8 Use in Specific Populations

8.1 Pregnancy

(Pregnancy and Lactation Labeling Rule (PLLR) Conversion; Extensive changes – please refer to labeling)

8.2 Lactation

(Pregnancy and Lactation Labeling Rule (PLLR) Conversion; Additions and/or revisions are underlined)

Risk Summary

It is not known whether BARACLUDE is present in human breast milk, affects human milk production, or has effects on the breastfed infant. When administered to lactating rats, entecavir was present in milk. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for BARACLUDE and any potential adverse effects on the breastfed infant from BARACLUDE or from the underlying maternal condition.

Data

Entecavir was excreted into the milk of lactating rats following a single oral dose of 10 mg per kg on lactation day 7. Entecavir in milk was approximately 25% that in maternal plasma (based on AUC).

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

17 PATIENT COUNSELING INFORMATION

(Extensive changes; please refer to labeling)