Hepatitis B, Chronic
Conditions
Keywords
HBsAg next assay, Functional cure, HBsAg loss, HBsAg reversion
Brief summary
The goal of this observational study is to learn about the HBsAg reversion rate at 48 weeks off treatment in HBsAg-negative patients by HBsAg NEXT assay which has improved sensitivity compared to current ARCHITECT HBsAg Assay. The main question it aims to answer is: What's the HBsAg reversion rate at 48 weeks off treatment in HBsAg-negative patients by HBsAg NEXT assay? HBsAg NEXT assay technology (lower limit of detection for HBsAg is 0.005 IU/ml) and current ARCHITECT HBsAg assay (lower limit of detection for HBsAg is 0.05 IU/ml) are applied for HBsAg detection in patients achieving functional cure, and to compare the difference in HBsAg reversion rate 48 weeks off treatment under the two types of criteria.
Detailed description
In this study, chronic hepatitis B patients who achieved HBsAg loss by current ARCHITECT HBsAg testing (lower limit of detection for HBsAg is 0.05 IU/ml) under interferon therapy and received consolidation therapy for 3 month after that were screened for eligibility. Those who are willing to discontinue were enrolled in the study. Patients were divided in two groups according to HBsAg levels，one with patients who were HBsAg-negative （HBsAg\<0.005 IU/mL）by HBsAg next assay , and the other with patients who had HBsAg levels between 0.005 IU/mL and 0.05IU/mL. Patients were followed up for 48 weeks after discontinuation after HBsAg loss and HBsAg reversion rates in the two groups were analyzed and compared.
Interventions
None listed
Sponsors
Huashan Hospital
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* HBsAg-negative by Abbott's HBsAg Test and HBeAg-negative; * Having serum specimens retained at baseline and at 48 weeks off treatment follow up; * Being willing to follow up regularly for 1 year.
Exclusion criteria
* Patients with hepatitis B cirrhosis in the compensated and decompensated stages: this includes patients with a clear history of cirrhosis (imaging or histological evidence) or Child-Pugh score ≥5 prior to NUC treatment, or who have had complications of the decompensated stage of cirrhosis, such as ascites, hepatic encephalopathy, or ruptured oesophago-gastric fundal varices bleeding; * Combined HAV, HCV, HDV, HEV, HIV infections, alcoholic liver disease, inherited metabolic liver disease, pharmacological liver disease, non-alcoholic fatty liver disease, autoimmune liver disease and other chronic liver diseases; * Primary hepatocellular carcinoma or those with AFP greater than 100 ng/ml at screening and imaging suggestive of possible malignant hepatic occupancy; or patients with AFP greater than 100 ng/ml for a sustained period of 3 months; * Patients with a combination of other malignant tumours (excluding those who have been cured); * Patients with severe diseases or uncontrolled disease * Those who are also participating in other clinical studies; * Patients deemed unsuitable by the investigator to participate in this study.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| HBsAg reversion rate | 48 weeks | HBsAg reversion rate in patients with HBsAg loss by Abbott's HBsAg next assay at week 48 off treatment |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Proportion of patients who were HBsAg positive | 48 weeks | Proportion of patients who were HBsAg positive by HBsAg Next assay in those who were HBsAg negative by ARCHITECT HBsAg test. |
| HBsAg seroconversion rate | 48 weeks | HBsAg seroconversion rate at 48 weeks off treatment follow-up in patients with HBsAg loss |
| Surface antibody disappearing rates | 48 weeks | Surface antibody disappearing rates at 48 Weeks off treatment Follow-up in Patients with HBsAg loss |
| Viral reactivation rate | 48 weeks | Viral reactivation rate (HBV DNA \> 20 IU/ml) at 48 weeks off treatment in patients with HBsAg loss |
Countries
China
Contacts
Primary ContactFahong Li
Outcome results
None listed