Abstract:
BACKGROUND AND AIMS:Flares are a well known phenomenon during antiviral treatment for chronic hepatitis B. Little is known about the effect of flares on response. We investigated the timing and characteristics of flares, in relation to treatment response (hepatitis B e antigen loss). PATIENTS:A total of 266 patients, participating in a global randomised controlled study, were assigned to 52 weeks of 100 mug pegylated (Peg)-interferon alpha-2b weekly, combined with either daily lamivudine 100 mg or placebo. RESULTS:Sixty seven patients (25%) exhibited 75 flares, with 38 (51%) flares in the combination therapy and 37 (49%) in the monotherapy groups. Overall, 30% of patients with and 38% of patients without a flare responded to therapy (p = 0.25). In 24 patients (36%) the flare was followed by a decrease in hepatitis B virus (HBV) DNA (host induced flare). In 25 (38%) patients the flare was preceded by an increase in HBV DNA (virus induced flare). In 17 (26%) patients the flare did not meet one of these criteria (indeterminate flare). Of patients with host induced flare, 58% responded whereas only 20% of patients with virus induced flares responded (p = 0.008). Hepatitis B surface antigen loss (n = 8) was exclusively seen in patients experiencing a host induced flare. Multivariate logistic analysis showed that host induced flares was an independent predictor of response (p = 0.043). CONCLUSION:Flares are not more common in responders than in non-responders to Peg-interferon alpha-2b therapy. Virus induced flares, which occur after an increase in HBV DNA level, and most probably are indicative for increased expression of viral antigens, did not lead to treatment response. In contrast, host induced flares which were followed by a HBV DNA decrease were highly associated with treatment response.
journal_name
Gutjournal_title
Gutauthors
Flink HJ,Sprengers D,Hansen BE,van Zonneveld M,de Man RA,Schalm SW,Janssen HL,HBV 99-01 Study Group.doi
10.1136/gut.2004.062208keywords:
subject
Has Abstractpub_date
2005-11-01 00:00:00pages
1604-9issue
11eissn
0017-5749issn
1468-3288pii
gut.2004.062208journal_volume
54pub_type
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