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Trajectories of serum hepatitis B surface antigen kinetics in patients with chronic hepatitis B receiving long‐term nucleos(t)ide analogue therapy
Wei‐Fan Hsu
Chuen‐Fei Chen
Hsueh‐Chou Lai
Wen‐Pang Su
Chia‐Hsin Lin
Po‐Heng Chuang
Sheng‐Hung Chen
Ching‐Hsiang Chen
Hung‐Wei Wang
Guan‐Tarn Huang
Cheng‐Yuan Peng
First published: 31 August 2017
https://doi.org/10.1111/liv.13564
Cited by: 1
Funding informationThis study was supported by a grant (No. DMR‐101‐011) from China Med ... More
Handling Editor: Chun‐Jen Liu
Abstract
Background & Aims
The kinetics of serum hepatitis B surface antigen (HBsAg) levels during long‐term nucleos(t)ide analogue (NA) therapy in chronic hepatitis B (CHB) patients remains unclear. We investigated the patterns of serum HBsAg kinetics and their association with therapeutic outcomes in genotype B‐ or C‐infected CHB patients receiving long‐term NA therapy.
Methods
We enrolled 329 treatment‐naive CHB patients receiving NA therapy for >5 years to analyse the kinetic patterns by using group‐based trajectory models (GBTMs).
Results
Most patients (82.4%) received entecavir therapy. The median treatment duration was 83.6 (68.5‐89.7) months. The GBTMs revealed three groups for both the hepatitis B e antigen (HBeAg)‐positive and ‐negative patients. The median annual decline in serum HBsAg levels during the first 5 years was significantly higher in Group 1 than in Groups 2 and 3 in HBeAg‐positive (0.78 vs 0.10 vs 0.10 log10IU/mL) and HBeAg‐negative (0.71 vs 0.08 vs 0.09 log10IU/mL) patients. HBsAg levels at the baseline and 12 months combined with an HBsAg decline from the baseline to 12 months of treatment predicted trajectory pattern 1 in HBeAg‐positive (sensitivity, 77.8%; specificity, 99.1%; positive predictive value [PPV], 87.5%; and negative predictive value [NPV], 98.2%) and HBeAg‐negative (sensitivity, 100%; specificity, 99.5%; PPV, 88.9%; and NPV, 100%) patients. The trajectory patterns were significantly associated with HBeAg loss in the HBeAg‐positive patients and the achievement of HBsAg <100 IU/mL or HBsAg loss in HBeAg‐positive and HBeAg‐negative patients.
Conclusions
The trajectory of serum HBsAg levels predicts HBsAg loss in CHB patients receiving long‐term NA therapy.
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