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Cessation of Long Term NAs vs. Keeping on NAs Among CHB Patients (CNAVK)

Virological Response After Cessation of Long Term Anti-HBV Nucleos(t)Ide Analogues (NAs) vs. Keeping on NAs Among Chronic Hepatitis B (CHB) Patients

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03792919
Enrollment
2000
Registered
2019-01-04
Start date
2018-12-01
Completion date
2025-12-31
Last updated
2025-03-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Hepatitis B

Brief summary

To Identify the collected cases who can stop NAs safely with satisfactory clinical outcome including sustain viral remission and HBsAg clearance among chronic hepatitis B(CHB) patients.

Detailed description

Nucleos(t)ides analogues(NAs) is a safe and effective treatment among chronic hepatitis B(CHB) patients with excellent tolerance. Entecavir or tenofovir mono therapy has been shown to achieve inhibition of HBV replication in almost all adherent patients. However, HBsAg loss rate is low even after long-term NAs treatment. Recent studies indicated that cessation of NAs treatment could increase HBsAg clearance rate. Identifying the collected cases who can stop NAs safely with satisfactory clinical outcome including sustain viral remission and HBsAg clearance is very important.

Interventions

DRUGStop current treatment (anti-HBV neucleos(t)ides)

Stop the current anti-HBV neucleos(t)ides treatment among the CHB patients who meet the criteria the stopping rule of long term treatment.

DRUGKeep current treatment (anti-HBV neucleos(t)ides)

Keep the current anti-HBV neucleos(t)ides treatment among the CHB patients who meet the criteria the stopping rule of long term treatment.

Sponsors

Humanity & Health Medical Group Limited
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Participants will be randomized to 2 groups. Group 1: Stop current anti-HBV neucleos(t)ides treatment, Group 2: Keep on current anti-HBV nucleus(t)ides treatment

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

1. HBsAg positive, HBeAg negative, antibody to HBeAg-positive; 2. Stable administration of anti-HBV neucleos(t)ides analogue mono therapy for at least more than one and a half year; 3. Demonstration of undetectable HBV DNA on three occasions, each at least 6 months apart, which is consistent with the APASL stopping rule; 4. Patients read, understand the consent form, and signed the study consent.

Exclusion criteria

1. Patient with other liver diseases; 2. Patient with concurrent hepatitis viruses or HIV infection; 3. Patients are reluctant to stop their anti-HBV treatment.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of HBsAg clearanceFrom baseline to the end of the fifth year after cessation of anti-HBV treatment.The incidence of HBsAg clearance during the off-treatment period

Secondary

MeasureTime frameDescription
Incidence of HBsAg seroconversionFrom baseline to the end of the fifth year after cessation of anti-HBV treatment.The incidence of HBsAg seroconversion during the off-treatment period
Incidence of sustain HBV viral submissionrom baseline to the end of the fifth year after cessation of anti-HBV treatment.The incidence of sustain HBV viral submission during the off-treatment period
Incidence of sustain biological responserom baseline to the end of the fifth year after cessation of anti-HBV treatment.The incidence of sustain biological response during the off-treatment period
Incidence of hepatocellular carcinomarom baseline to the end of the fifth year after cessation of anti-HBV treatment.The incidence of hepatocellular carcinoma during the off-treatment period
Incidence of Liver failurerom baseline to the end of the fifth year after cessation of anti-HBV treatment.The incidence of Liver failure during the off-treatment period

Countries

Hong Kong

Contacts

Primary ContactGeorge Lau, MD
gkklau@netvigator.com852-28613777
Backup ContactDanny Wang
danny.wang@hnhmgl.com852-28613777

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026