Evaluation on Seropositive Patients of a Synthetic Vaccine Targeting the HIV Tat Protein

NCT ID: NCT01793818

Last Updated: 2016-02-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE1/PHASE2

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-02-28

Study Completion Date

2016-03-31

Brief Summary

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Tat Oyi vaccination on seropositive patients could help their immune system to recognize and neutralize Tat. The neutralization of extra cellular Tat should help the cellular immune response to eliminate HIV-1 infected cells.

Detailed Description

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The protocol got a favorable judgment from an ethic committee (CPP SudMed 2) on November 9th, 2012 and was authorized by the French drug agency (ANSM) on January 24th, 2013. It will be proposed to HIV-1 infected volunteers to participate to a phase I/II clinical trial to test the Tat Oyi vaccine. Volunteers will have an undetectable viremia (lower than 40 copies/ml) and a level of CD4 cells higher than 350 /mm3 since at least one year under Anti Retroviral Treatment (ART). It will be a randomized double blinded clinical trial with a placebo.

Main Objective: No undesirable events due to vaccination and viremia remaining \< 100 copies/ml after interruption of cART.

Secondary objective: An immune response against Tat characterized by the cross recognition of Tat variants representative of the five main HIV-1 clades.

Main parameter of evaluation: Plasma viremia. Secondary parameter of evaluation: Detection with ELISA of antibodies able to recognize Tat variants representative of the five main HIV-1 clades.

Conditions

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AIDS

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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Group 1 Phase I/II

Three injections with no active principle

Group Type PLACEBO_COMPARATOR

Tat Oyi

Intervention Type BIOLOGICAL

Three injections in the arm

Group 2 Phase I/II

Three injections of Tat Oyi vaccine containing 11 µg of active principle

Group Type ACTIVE_COMPARATOR

Tat Oyi

Intervention Type BIOLOGICAL

Three injections in the arm

Group 3 Phase I/II

Three injections Tat Oyi vaccine containing 33 µg of active principle

Group Type ACTIVE_COMPARATOR

Tat Oyi

Intervention Type BIOLOGICAL

Three injections in the arm

Group 4 Phase I/II

Three injections Tat Oyi vaccine containing 99 µg of active principle

Group Type ACTIVE_COMPARATOR

Tat Oyi

Intervention Type BIOLOGICAL

Three injections in the arm

Interventions

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Tat Oyi

Three injections in the arm

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Age from 18 to 64 years old for the pre inclusion visit.
* Documented HIV-1 Infection
* Preferentially, group A patients from CDC classification but no group C patients.
* HIV-1 patients treated with three antiretroviral drugs since 12 months not changed since three months and having an undetectable viremia since 12 months.
* HIV-1 Chronic infection defined by a positive HIV-1 ELISA and HIV-1 proteins characterized in a full HIV-1 Western blot. Stable undetectable plasmatic HIV RNA (lower than 40 copies/ml) since 12 months. Lymphocyte CD4 cells higher than 350/mm3 with a NADIR higher than 200/mm3 since 12 months.
* Free engagement, fully explained and wrote with the patient signature for the inclusion visit and before any test required for the clinical trial.
* Patient affiliated to a social security system.
* No vaccination against influenza or other pathogens since three months.
* No chemotherapy or treatments with corticosteroid
* HIV-1 patients being abstinent former drug users or drug users following substitution training.

Exclusion Criteria

* HIV-1 patient protected regarding French law (articles L1121-5, L1121-6, L1121-7, L1121-8 \& L1122-2)
* No HIV-1 infection
* Patient infected with HIV-2
* Patient in HIV-1 primo infection or recently in primo infection
* Patient in symptomatic primo infection or CD4 cells lower than 200/mm3
* Women sexually active with no efficient contraception
* Pregnant women or brass feeding.
* Patient with an opportunistic infection in the CDC group C.
* Patient with a cancer and/or under chemotherapy or radiotherapy.
* Patient with an evolutive psychiatric pathology
* Patient being HBV and/or HCV positive
* Patient being ELISA positive for HTLV-1
* Patient being cirrhotic (Child and Pugh level A, B and C)
* Patient under criminal investigation
* Patients with abnormal blood formulation
* Patient participating to another clinical research
Minimum Eligible Age

18 Years

Maximum Eligible Age

64 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Assistance Publique Hopitaux De Marseille

OTHER

Sponsor Role collaborator

BIOSANTECH

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Isabelle Ravaux, MD

Role: PRINCIPAL_INVESTIGATOR

Assistance Publique Hopitaux De Marseille

Locations

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Centre d'Investigation Clinique - Universitary Hospital Centre Conception

Marseille, , France

Site Status

Countries

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France

References

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Loret E. HIV extracellular Tat: myth or reality? Curr HIV Res. 2015;13(2):90-7. doi: 10.2174/1570162x12666141202125643.

Reference Type BACKGROUND
PMID: 25439235 (View on PubMed)

Other Identifiers

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EVATAT

Identifier Type: -

Identifier Source: org_study_id

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