Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2006-8-28
pubmed:abstractText
Response to lamivudine treatment longer than 1 year was compared in 15 patients persistently infected with hepatitis B virus (HBV) genotype A, 38 with genotype B, and 449 with genotype C. Patients with genotype A were younger (median age 37 [range 24-49] vs. 47 [24-67] or 44 [18-73], P = 0.015), possessed hepatitis B e antigen (HBeAg) more frequently (73% vs. 21% or 56%, P < 0.001) and HBV DNA in higher levels (8.6 [6.1-8.7] vs. 6.5 [<3.7-8.7] or 6.5 [<3.7-8.7] log genome equivalents (LGE)/ml, P = 0.024) than those with genotype B or C. During lamivudine, YMDD mutants (89% vs. 53% or 42%, P = 0.0001) and breakthrough hepatitis developed more often (47% vs. 21% or 29%, P = 0.023) in patients with genotype A than B or C. YMDD mutants elicited more frequently in patients with genotype A than B or C who were positive (82% [9/11] vs. 25% [2/8] or 48% [117/245], P = 0.037) or negative for HBeAg (75% [3/4] vs. 30% [9/30] or 33% [68/204], P = 0.003). HBeAg (hazard ratio 2.1 [95% confidence interval 1.53-2.92], P < 0.001) and genotype A (2.78 [1.08-7.12], P = 0.034) enhanced the emergence of YMDD mutants by the Cox proportional hazard model. The risk for breakthrough hepatitis was increased by the baseline alanine aminotransferase level <500 IU/L (2.56 [1.82-5.50], P = 0.018), HBeAg (2.11 [1.40-3.16], P < 0.001), cirrhosis (1.92 [1.24-2.97], P = 0.004) and HBV DNA > or =8.0 LGE/ml (1.57 [1.04-2.36], P = 0.03); it was influenced by genotypes only in patients with HBeAg. In conclusion, HBV genotypes help in predicting response to long-term lamivudine treatment and development of YMDD mutants in patients with chronic hepatitis B.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0146-6615
pubmed:author
pubmed:issnType
Print
pubmed:volume
78
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1276-83
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:16927289-Administration, Oral, pubmed-meshheading:16927289-Adolescent, pubmed-meshheading:16927289-Adult, pubmed-meshheading:16927289-Aged, pubmed-meshheading:16927289-Disease Progression, pubmed-meshheading:16927289-Female, pubmed-meshheading:16927289-Genetic Markers, pubmed-meshheading:16927289-Genome, Viral, pubmed-meshheading:16927289-Genotype, pubmed-meshheading:16927289-Hepatitis B, Chronic, pubmed-meshheading:16927289-Hepatitis B virus, pubmed-meshheading:16927289-Hospitals, Urban, pubmed-meshheading:16927289-Humans, pubmed-meshheading:16927289-Lamivudine, pubmed-meshheading:16927289-Male, pubmed-meshheading:16927289-Middle Aged, pubmed-meshheading:16927289-Mutation, pubmed-meshheading:16927289-Proportional Hazards Models, pubmed-meshheading:16927289-Reverse Transcriptase Inhibitors, pubmed-meshheading:16927289-Time Factors, pubmed-meshheading:16927289-Tokyo, pubmed-meshheading:16927289-Treatment Outcome
pubmed:year
2006
pubmed:articleTitle
Response to long-term lamivudine treatment in patients infected with hepatitis B virus genotypes A, B, and C.
pubmed:affiliation
Research Institute for Hepatology, Toranomon Hospital, Tokyo, Japan. vj7m-kbys@asahi-net.or.jp
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, Randomized Controlled Trial, Research Support, Non-U.S. Gov't