Eligibility Criteria:
Group 1: Patients with history of HBV-related clinical endpoint events
Inclusion Criteria:
* No age limit;
* Male or female;
* Patients with liver biopsy performed at least 1 year after antiviral therapy; patients with history of clinical endpoint events (decompensated cirrhosis, hepatocellular carcinoma, liver transplantation or liver-related death) after liver biopsy;
* Patients with liver biopsy or liver stiffness or aspartate aminotransferase (AST)-to-platelet (PLT) ratio index (APRI) before antiviral treatment.
Exclusion Criteria:
* Patients with decompensated cirrhosis (including ascites, hepatic encephalopathy, esophageal varices bleeding, hepatorenal syndrome, spontaneous bacterial peritonitis, or other complications of decompensated cirrhosis), hepatocellular carcinoma, or liver transplantation before liver biopsy;
* Patients with hepatitis C virus (HCV) or human immunodeficiency virus (HIV) infection, alcoholic liver disease, autoimmune liver disease, genetic liver disease, drug-induced liver injury, or other chronic liver diseases;
* Patients with malignant lesion on liver image;
* Patients with other uncured malignant tumors;
* Patients with severe heart, lung, kidney, brain, blood, neuropsychiatric or other organs diseases;
* Pregnant or lactating women;
* Patients with any other reasons not suitable for the study.
Group 2: Patients without history of clinical endpoint events
Inclusion Criteria:
* No age limit;
* Male or female;
* Patients with liver biopsy performed at least 1 year after antiviral therapy; or chronic hepatitis B (CHB) patients with antiviral therapy at least 1 year content to be performed liver biopsy at enrollment;
* Patients with liver biopsy or liver stiffness or APRI before antiviral treatment;
* Agree to be followed up regularly;
* Signature of informed consent.
Exclusion Criteria:
* Patients with decompensated cirrhosis (including ascites, hepatic encephalopathy, esophageal varices bleeding, hepatorenal syndrome, spontaneous bacterial peritonitis, or other complications of decompensated cirrhosis), hepatocellular carcinoma, or liver transplantation;
* Patients with HCV or HIV infection, alcoholic liver disease, autoimmune liver disease, genetic liver disease, drug-induced liver injury, or other chronic liver diseases;
* Patients with malignant lesion on liver image;
* Patients with other uncured malignant tumors, exclude who were cured;
* Patients with severe heart, lung, kidney, brain, blood, neuropsychiatric or other organs diseases;
* Pregnant or lactating women;
* Patients with any other reasons not suitable for the study.