Abstract:
OBJECTIVE:To review long-term safety data from the rollover study ETV-901, focusing on adverse events (AEs) with a potential nucleos(t)ide association. METHODS:The open-label study ETV-901 (AI463901) assessed the safety of entecavir in chronic hepatitis B patients who received entecavir, lamivudine or adefovir monotherapy in previous entecavir Phase II/III studies. Long-term cumulative safety results are based on reported AEs, regardless of causal relationship. RESULTS:Median exposure to entecavir in study ETV-901 was 184 weeks. Commonly reported AEs (≥ 10%) were upper respiratory tract infection, headache and nasopharyngitis. Most AEs were mild to moderate; 203 (19%) patients reported grade 3 - 4 AEs, with 45 (4%) considered related to entecavir. There were 14 (1%) discontinuations due to AEs. On-treatment alanine aminotransferase (ALT) flares were reported in 32 (3%) patients and were associated with a reduction in hepatitis B virus DNA of more than 2 log(10) copies/ml in 25/32 patients. AEs potentially associated with nucleos(t)ide analogs were infrequent, the most common being myalgia (n = 54; 5%) and neuropathy-related AEs (hypoparesthesia and hyperparesthesia, polyneuropathy; n = 42; 4%). CONCLUSIONS:Long-term administration of entecavir was associated with low rates of serious AEs, discontinuations due to AEs and ALT flares. AEs potentially associated with nucleos(t)ide use occurred at low rates.
journal_name
Expert Opin Drug Safjournal_title
Expert opinion on drug safetyauthors
Manns MP,Akarca US,Chang TT,Sievert W,Yoon SK,Tsai N,Min A,Pangerl A,Beebe S,Yu M,Wongcharatrawee Sdoi
10.1517/14740338.2012.653340subject
Has Abstractpub_date
2012-05-01 00:00:00pages
361-8issue
3eissn
1474-0338issn
1744-764Xjournal_volume
11pub_type
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journal_title:Expert opinion on drug safety
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