Journal article

Defective hepatitis B virus DNA is not associated with disease status but is reduced by polymerase mutations associated with drug resistance

Scott Preiss, Margaret Littlejohn, Peter Angus, Alex Thompson, Paul Desmond, Sharon R Lewin, Joe Sasadeusz, Gail Matthews, Gregory J Dore, Tim Shaw, Vitini Sozzi, Lilly Yuen, George Lau, Anna Ayres, Chloe Thio, Anchalee Avihingsanon, Kiat Ruxrungtham, Stephen Locarnini, Peter A Revill

HEPATOLOGY | WILEY | Published : 2008

Abstract

UNLABELLED: Defective hepatitis B virus DNA (dDNA) is reverse-transcribed from spliced hepatitis B virus (HBV) pregenomic messenger RNA (pgRNA) and has been identified in patients with chronic HBV (CH-B). The major 2.2-kb spliced pgRNA encodes a novel HBV gene product, the hepatitis B splice protein (HBSP) via a deletion and frame shift within the polymerase. Although spliced RNA and HBSP expression have been associated with increased HBV DNA levels and liver fibrosis, the role of dDNA in HBV-associated disease is largely undefined. Our aims were to (1) compare the relative proportions of dDNA (% dDNA) in a range of HBV-infected serum samples, including patients with human immunodeficiency v..

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