Determinants for hepatitis B e antigen clearance in chronic type B hepatitis.

Area of Science:

• Hepatology
• Virology
• Immunology

Background:

• Chronic hepatitis B infection is a significant global health concern.
• Hepatitis B e-antigen (HBeAg) positivity indicates active viral replication and infectivity.
• HBeAg clearance is a key marker of treatment response and disease remission.

Purpose of the Study:

• To investigate factors influencing HBeAg clearance in HBeAg-positive chronic hepatitis patients.
• To identify predictors of spontaneous HBeAg seroconversion.
• To evaluate the impact of hepatitis histology and patient demographics on HBeAg clearance rates.

Main Methods:

• A 6-year longitudinal study of 237 HBeAg-positive chronic hepatitis patients.
• Monitoring of HBeAg status, SGPT levels, alphafetoprotein, and liver histology.
• Analysis of clearance rates based on hepatitis type, exacerbation severity, and patient sex.

Main Results:

• Annual HBeAg clearance rate was 16%, with a 67% cumulative probability over 5 years.
• HBeAg clearance was preceded by exacerbations (SGPT > 300 IU/L) in 62% of patients, but only 23% of exacerbations led to clearance.
• Alphafetoprotein > 100 ng/ml during exacerbation, chronic active/lobular hepatitis, and male sex were significant predictors of HBeAg clearance.

Conclusions:

• HBeAg clearance is a multifactorial process influenced by time, hepatitis histology, exacerbation severity, and patient sex.
• Specific histological patterns and biochemical markers during exacerbations can predict HBeAg seroconversion.
• Male patients and those with more severe forms of chronic hepatitis exhibit higher rates of HBeAg clearance.