Completed

Characteristics of Hepatitis B HBsAg & HBsAc Carriers Simultaneously

0 criteria met from your profileSee at a glance how your profile meets each eligibility criteria.
What is being collected

Data Collection

Collected from past medical records and data - Retrospective
Who is being recruted

Blood-Borne Infections+8

+ Communicable Diseases

+ Digestive System Diseases

From 18 to 90 Years
+2 Eligibility Criteria
See all eligibility criteria
How is the trial designed

Cohort

Tracking disease incidence in order to identify risk factors and understand disease progression over time.
Observational
Study Start: June 2022
See protocol details

Summary

Principal SponsorCorporacion Parc Tauli
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: June 15, 2022

Actual date on which the first participant was enrolled.

HBV infection is a dynamic process with complex interactions between virus replication and the host's immune response. The appearance of anti-HBs after HBV infection generally indicates recovery and immunity to HBV1 infection. However, there are several published studies that describe the coexistence of the marker of chronic infection (HBsAg +) and the marker of functional cure (HBsAc +). There are contradictory studies on whether the coexistence of HBsAg/HBsAc implies a different clinical course.

Official TitleCharacteristics of Hepatitis B HBsAg & HBsAc Carriers Simultaneously
NCT05446532
Principal SponsorCorporacion Parc Tauli
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

120 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Cohort

These studies follow a group of individuals with common characteristics (such as a condition or birth year) over a specific period to study health outcomes or exposures.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 18 to 90 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Blood-Borne InfectionsCommunicable DiseasesDigestive System DiseasesDNA Virus InfectionsHepatitisHepatitis BHepatitis, Viral, HumanInfectionsLiver DiseasesVirus DiseasesHepadnaviridae Infections

Criteria

1 inclusion criteria required to participate
all those patients who have been seen in outpatient hepatology consultations and who present positive HBsAg and HBsAc serology simultaneously.

1 exclusion criteria prevent from participating
Hepatitis C or HIV Co-infection

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Study Objectives

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

H. Consorci Sanitari Parc Tauli

Sabadell, SpainOpen H. Consorci Sanitari Parc Tauli in Google Maps
CompletedOne Study Center