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Clinical Trial Details — Status: Enrolling by invitation

Administrative data

NCT number NCT04984772
Other study ID # Euro-B
Secondary ID CO-SW-985-5602
Status Enrolling by invitation
Phase
First received
Last updated
Start date October 2, 2001
Est. completion date December 31, 2030

Study information

Verified date November 2023
Source Insel Gruppe AG, University Hospital Bern
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The overall aim of the project is to establish an international multi-cohort research platform of HIV/HBV-coinfected individuals treated with tenofovir to improve our understanding of the determinants of treatment outcomes.


Description:

Hepatitis B virus (HBV) infection is a major cause of morbidity and mortality among human immunodeficiency virus (HIV)-infected individuals and the progression of liver disease is accelerated in this population compared to HBV-monoinfected individuals. Tenofovir disoproxil fumarate (TDF) or tenofovir alafenamide (TAF) as part of antiretroviral therapy (ART) suppresses HBV viral load in most patients. However, risk factors of suboptimal virological response to TDF/TAF and predictors of hepatitis B surface antigen (HBsAg) loss remain unclear. While novel drugs for HBV therapy are being developed, a more thorough understanding of the factors associated with optimal outcomes is urgent. Euro-B considers all HIV/HBV-coinfected participants from EuroSIDA, the Swiss HIV cohort study and French, Spanish and German HIV-HBV cohorts treated with TDF/TAF for inclusion. The overall aim of the project is to establish an international prospective multi-cohort research platform of HIV/HBV-coinfected individuals to improve our understanding of the determinants of treatment outcomes, including functional cure of HBV infection. Specifically, we aim to: 1. evaluate HBV virological suppression, hepatitis B e antigen (HBeAg) and HBsAg loss as well as the course of quantitative HBsAg (qHBsAg) levels during TDF/TAF-containing antiretroviral therapy 2. evaluate predictors of HBsAg loss and its correlation with Hepatitis B core-related antigen (HBcrAg) and pre-genomic RNA (pgRNA) levels 3. explore risk factors for low-level HBV replication after 2 years of therapy 4. describe changes in liver fibrosis stage and rates of transaminase normalization over time and according to HBV therapy outcome 5. assess rates and reasons of treatment interruptions or changes.


Recruitment information / eligibility

Status Enrolling by invitation
Enrollment 1107
Est. completion date December 31, 2030
Est. primary completion date December 31, 2030
Accepts healthy volunteers No
Gender All
Age group 16 Years and older
Eligibility Inclusion Criteria: - Study participant from contributing cohort - 2 positive HBsAg tests more than 6 months apart - At least 2 data points (baseline and 2 years after TDF/TAF start either as available data or stored sample Exclusion Criteria: - None

Study Design


Related Conditions & MeSH terms


Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Insel Gruppe AG, University Hospital Bern

Outcome

Type Measure Description Time frame Safety issue
Primary HBV suppression Proportion of participants achieving undetectable HBV DNA 2 years of TDF/TAF-containing treatment and last available timepoint
Primary HBsAg loss Proportion of participants with a negative HBsAg measurement 2 years of TDF/TAF-containing treatment and last available timepoint
Primary HBeAg loss Proportion of participants with a negative HBeAg measurement 2 years of TDF/TAF-containing treatment and last available timepoint
Primary Transaminase normalization Proportion of participants with transaminase normalization 2 years of TDF/TAF-containing treatment and last available timepoint
Primary Liver fibrosis change Proportion of participants with a change in liver fibrosis stage 2 years of TDF/TAF-containing treatment and last available timepoint
Primary Treatment interruption or change Assessments of rates and reasons for treatment interruptions or changes 2 years of TDF/TAF-containing treatment and last available timepoint
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