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Combination Vaccination Before HIV Treatment Interruption

19. marts 2019 opdateret af: Ottawa Hospital Research Institute

A Pilot Study to Determine the Impact of Therapeutic HIV Vaccination Followed by a Scheduled Interruption of Antiretroviral Therapy on HIV-Specific Immune Function and Virologic Rebound in Patients With Prolonged Viral Suppression

The purpose of this study is to determine if vaccination before a structured treatment interruption (STI) is associated with an improvement in immune function, resulting in a delayed and reduced rebound in the amount of HIV virus in the blood.

Studieoversigt

Status

Afsluttet

Betingelser

HIV-infektioner

Intervention / Behandling

Biologisk: Remune and ALVAC

Detaljeret beskrivelse

Volunteers will be randomly assigned to receive the vaccines or matching placebos before interrupting their antiretroviral therapy at week 24.

Dosage:

Remune(TM) 1 ml i.m.* at weeks 0, 12, and 20; ALVAC 1 ml i.m.* at weeks 8,12, 16, and 20.

* i.m.: injected in a muscle

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

Fase

Fase 2
Fase 1

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

Canada
- Ontario
  - Ottawa, Ontario, Canada, K1H 8L6
    - The Ottawa Hospital, General Campus
- Quebec
  - Montreal, Quebec, Canada, H2X 2P4
    - Montreal Chest Institute
  - Montreal, Quebec, Canada, H2W 1T8
    - CHUM Hôtel-Dieu

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

Documented HIV infection (by serology)
HIV RNA level below 50 copies/ml for at least two years
Receiving at least 2 antiretroviral agents including at least 1 protease inhibitor or 1 non-nucleoside reverse transcriptase inhibitor at time of screening
Have CD4 counts above 500 cells/ul
Have CD4/CD8 ratio above 0.5
Have never had a CD4 count below 250
No previous AIDS-defining opportunistic infection
No previous cancer chemotherapy or other system immunosuppressive therapy (excluding brief courses [<= 1 month] of prednisone or its equivalent)
Able to provide informed consent

Exclusion Criteria:

Hepatitis B surface antigen positive
Hepatitis C antibody positive
AST, ALT, ALP, creatinine, urea above three times the normal upper limit
Blood abnormalities (hemoglobin lower than 100, white blood cell count [WBC] lower than 1500 or platelets lower than 100)
Allergies to components of Remune™ or ALVAC
Contraindications to vaccine components
Pregnancy or breastfeeding

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Primært formål: Behandling
Tildeling: Randomiseret
Interventionel model: Enkelt gruppeopgave
Maskning: Tredobbelt

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål	Tidsramme
Time to Detectable Virus in the Remune Plus ALVAC Group and the Placebo Group Tidsramme: Up to week 48	Up to week 48

Sekundære resultatmål

Resultatmål	Foranstaltningsbeskrivelse	Tidsramme
Time to Detectable Virus in the ALVAC Alone Group and the Placebo Group Tidsramme: Up to week 48		Up to week 48
Time to Rebound of Plasma HIV RNA Level to 10,000 Copies/ml Tidsramme: Up to week 48		Up to week 48
Viral Set-point Tidsramme: Up to week 48	Viral set-point is the viral load (HIV RNA) that the body settles at within a few weeks to months after infection with HIV.	Up to week 48
Magnitude of Viral Rebound Tidsramme: Up to week 48	Magnitude of viral rebound is the amount of HIV viral load an infected person who was previously on ART and suppressed below clinical detection rebounds to following ART stoppage. This will typically be compared to the viral load before starting ART or Viral set-point discussed earlier.	Up to week 48
HIV-specific Immune Function Tidsramme: at week 48		at week 48

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Ottawa Hospital Research Institute

Samarbejdspartnere

Canadian Institutes of Health Research (CIHR)

Ontario HIV Treatment Network

CIHR Canadian HIV Trials Network

Efterforskere

Ledende efterforsker: Jonathan B Angel, MD, OHRI

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Angel JB, Routy JP, Tremblay C, Ayers D, Woods R, Singer J, Bernard N, Kovacs C, Smaill F, Gurunathan S, Sekaly RP. A randomized controlled trial of HIV therapeutic vaccination using ALVAC with or without Remune. AIDS. 2011 Mar 27;25(6):731-9. doi: 10.1097/QAD.0b013e328344cea5.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. april 2004

Primær færdiggørelse (Faktiske)

1. juli 2010

Studieafslutning (Faktiske)

1. november 2010

Datoer for studieregistrering

Først indsendt

13. september 2005

Først indsendt, der opfyldte QC-kriterier