ITV Extension Study

2014-08-27 03:44:20 | BioPortfolio


The objective of this phase I/II therapeutic human immunodeficiency virus (HIV) vaccine candidate study is to provide proof of concept for a HIV antigen delivery system in terms of safety, virological effects and selected immune responses in HIV infected individuals after cessation of antiretroviral combination therapy (ART).


A multi-centre, double-blind, placebo-controlled, 20-week parallel group extension study to the VIR-NCHR-01 protocol (ITV study). The purpose of the extension study is to assess the safety and virological effects of a therapeutic HIV vaccine strategy in HIV-1 infected adults currently enrolled in the ITV study after cessation of antiretroviral therapy. Two active candidate vaccines will be studied in this trial: The active treatment arms will receive recombinant fowlpoxvirus (rFPV) expressing HIV gag-pol antigens or HIV gag-pol antigens and interferon-gamma (IFN-y) in diluent. Vaccines will be delivered by intramuscular injection.

Study Design

Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment




recombinant fowlpoxvirus (rFPV) expressing HIV gag-pol antigens, HIV gag-pol antigens and interferon-gamma (IFN-y)


407 Doctors
New South Wales




The National Centre in HIV Epidemiology and Clinical Research

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:44:20-0400

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Medical and Biotech [MESH] Definitions

Interferon secreted by leukocytes, fibroblasts, or lymphoblasts in response to viruses or interferon inducers other than mitogens, antigens, or allo-antigens. They include alpha- and beta-interferons (INTERFERON-ALPHA and INTERFERON-BETA).

The major interferon produced by mitogenically or antigenically stimulated LYMPHOCYTES. It is structurally different from TYPE I INTERFERON and its major activity is immunoregulation. It has been implicated in the expression of CLASS II HISTOCOMPATIBILITY ANTIGENS in cells that do not normally produce them, leading to AUTOIMMUNE DISEASES.

Class I human histocompatibility (HLA) surface antigens encoded by alleles on locus B of the HLA complex. The HLA-G antigens are considered non-classical class I antigens due to their distinct tissue distribution which differs from HLA-A; HLA-B; and HLA-C antigens. Note that several isoforms of HLA-G antigens result from alternative splicing of messenger RNAs produced from the HLA-G*01 allele.

The natural ligand for the T-cell antigen CD28; (ANTIGENS, CD28); mediating T- and B-cell adhesion. CD80 is expressed on activated B-cells and gamma-interferon-stimulated monocytes. The binding of CD80 to CD28 and CTLA-4 provides a co-stimulatory signal to T-cells and leads to greatly upregulated lymphokine production.

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