Liver histology of Asian patients with chronic hepatitis B on prolonged lamivudine therapy

• Published in: Alimentary pharmacology & therapeutics 2005-04, Vol.21 (7), p.841-849
• Main Authors: Yuen, M.‐F., Chow, D. H.‐F., Tsui, K., Wong, B. C.‐Y., Yuen, J. C.‐H., Wong, D. K.‐H., Lai, C.‐L.
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Asian Continental Ancestry Group - genetics; Biological and medical sciences; Biopsy - methods; China - ethnology; Digestive system; DNA, Viral - genetics; Female; Gastroenterology. Liver. Pancreas. Abdomen; Hepatitis B virus - genetics; Hepatitis B, Chronic - drug therapy; Hepatitis B, Chronic - ethnology; Hepatitis B, Chronic - pathology; Humans; Lamivudine - therapeutic use; Liver - pathology; Liver Cirrhosis - pathology; Liver Cirrhosis - virology; Male; Medical sciences; Middle Aged; Mutation - genetics; Pharmacology. Drug treatments; Reverse Transcriptase Inhibitors - therapeutic use
• ISSN: 0269-2813; 1365-2036
• DOI: 10.1111/j.1365-2036.2005.02410.x

Summary Background : Long‐term effect of YMDD mutations on liver histology in Chinese hepatitis B patients is unknown. Aim : To examine the effect of prolonged lamivudine treatment on liver histology in Chinese patients with and without YMDD mutations. Methods : Liver histology was assessed in 85 patients on long‐term lamivudine at baseline and year 1, and at year 3 for 25 patients. Results : Comparing patients with and without YMDD mutations at year 1, the former had higher baseline median necroinflammatory (11 vs. six respectively, P = 0.014) and fibrosis scores (three vs. one respectively, P = 0.001). The proportion of patients with improvement in necroinflammation and worsening of fibrosis was comparable for patients with and without YMDD mutations at year 1 (57.1%, 14.3% vs. 55%, 15% respectively) and year 3 (57.9%, 26.3% vs. 50%, 16.7% respectively). Comparing the histology at year 1 and 3, more patients with YMDD mutations developing after year 1 had worsening of necroinflammation than patients with persistent YMDD wild type (53.8% vs. 25% respectively). Conclusions : Patients who developed YMDD mutations had higher baseline histological scores. With YMDD mutations, the liver histology became less favourable after 3 years than at the first year, although there was still improvement when compared with that at baseline.