Occult Hepatitis B Virus Infection and HBV Reactivation After Switching to Long Acting Therapy in Patients With HIV-1

Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorIRCCS San Raffaele

About this trial

The primary objective of the present project will be to investigate the risk of HBV reactivation (from virological reactivation to overt HBV infection) in HIV-1 carriers with occult HBV infection (OBI, is characterized by the absence of surface antigenemia, HBsAg negativity, with the presence of HBV-core antibody, HBcAb) and switching from antiretroviral therapy (ART) including nucleos(t)ides to long-acting formulation.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Age > 18 years

Informed consent to participate in the study

HIV infection

Stable antiretroviral therapy (ART) in the six months prior to enrollment without virological failure defined by HIV-RNA>50 copies/mL in at least two consecutive determinations

Disqualifiers

Any contraindications to the use of one or more long-acting drugs

Non-expression or withdrawal of informed consent to participate in the study

Pregnancy

Lack of HIV genotypic resistance testing

Trial population

50 subjects will participate to the study, 30 subjects enrolled at the San Luigi Center (Unit of Infectious Diseases), IRCCS Ospedale San Raffaele in Milan, 10 subjects enrolled at Integrated Infectious Risk Management Department, Policlinico S. Orsola-Malpighi in Bologna, and 10 at the Department of Mental and Physical Health and Medicine prevention, University of Campania L. Vanvitelli of Naples.

Trial design

Design model

Other

Time perspective

Prospective

Treatments tested in this trial

Not listed

Trial groups

50 Participants
are grouped into 1 trial group
Group A: Subjects living with HIV switching to long acting therapy

Trial outcomes

Primary outcomes

1

Quantification of hepatitis B DNA (HBV-DNA)

HBV-DNA increase respect to baseline viremia (=\>10 IU/mL) according to different time points (W12, W24, W48) after the start of LART.

Time frame
Baseline (start of long-acting therapy) weeks 12, 24 and 48

Secondary outcomes

1

Quantification of hepatitis B RNA (HBV-RNA)

any concomitant HBV-RNA increase respect to baseline value by measurement of HBV- RNA at different time points (W12, W24, W48).

Time frame
Baseline and at weeks 12, 24 and 48
2

HBV mutational pattern by direct sequencing (Sanger)

the mutational pattern of HBV genome (S, pre-C/C, X and polymerase regions) will be evaluated in positive HBV-DNA samples

Time frame
Baseline and at weeks 12, 24 and 48

Other outcomes

1

Measurement of number of amino acid and/or nucleotide substitution.

Measurement of number of amino acid and/or nucleotide substitution tostudy the mutational profile of the regions of the hepatitis B virus (HBV) able to influence replication efficiency.

Time frame
Baseline (start of long-acting therapy) weeks 12, 24 and 48

Sponsors and contacts

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IRCCS San Raffaele

Lead sponsor

IRCCS Azienda Ospedaliero-Universitaria di Bologna

Collaborator

University of Campania Luigi Vanvitelli

Collaborator

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