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2131
Liver Disease Progression in Untreated Immune
Tolerant Phase Chronic Hepatitis B Patients
Compared to Treated Immune Active Phase
Patients
Jung Hyun Kwon, Internal Medicine, Incheon St. Mary’s
Hospital, the Catholic University of Korea, Sung Won Lee,
Department of Internal Medicine, College of Medicine, the
Catholic University of Korea and Jeong Won Jang, Department
of Internal Medicine, The Catholic University Liver Research
Center, College of Medicine, the Catholic University of Korea
Background: Chronic hepatitis B (CHB) can be controlled
by antiviral therapy, but not all CHB patients are currently
indicated. Especially, antiviral therapy in patients with normal
alanine aminotransferase (ALT) is still controversial. We
assessed the risk factors for liver disease progression in
untreated immune tolerant (IT) phase patients compared to
antiviral-treated immune active (IA) phase patients. Methods:
This study included consecutive CHB patients in 3 large
volume hospitals in Korea who tested positive for HBeAg and
had an HBV DNA level of > 1,000,000 IU/ml, no evidence of
cirrhosis and an ALT level of <80 IU/L as untreated IT group.
IT group was sub-analyzed into three group depending on
ALT levels (I: < 35 IU/L for men and < 25 IU/L for women,
II: < 40 IU/L, III: < 80 IU/L). Control group IA was defined as
the same criteria except for receiving antiviral therapy due to
the elevated aminotransferase > 80 IU/L. Results: A total of
509 patients were included: 235 were in untreated IT (I: 113
II:173, III:235) and 274 were in treated IA group. Follow up
period was 41 month in IT and 51 month in IA group. The
IT group was significantly younger than IA group (36 yearold
vs 43 year-old, P=0.000). Baseline liver function was
significantly more favorable in the IA group. Among IT group,
56 (23.8%) patients eventually started antiviral therapy. Age
> 35 year and baseline high ALT level (II and III group vs.
I group) were significant risk factors for immune activation
(P<0.05). Progression to cirrhosis (4.3% vs 1.8%, P=0.054)
was higher in the untreated IT group than treated IA group.
HCC was developed 1.7% in untreated IT and 0.4% in
treated IA group (P=0.220). By logistic regression analysis
for progression to cirrhosis, age > 40 year-old and high level
of PT INR were significant risk factors in untreated IT group.
However, in treated IA group, there were no significant factor
including age and baseline liver function for predicting liver
cirrhosis. Conclusion: The present study suggested that
older age and higher ALT level even < 80 IU/L in the untreated
IT group were risk factors for future immune activation.
Progression to cirrhosis was higher in untreated IT group
than treated IA group, although it was statistically borderline.
Interestingly, older age and poor liver function were risk
factors for progression to cirrhosis in untreated IT group, but
the effects of these factors on progression to cirrhosis were
offset by antiviral therapy in the treated IA group. |
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