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Safety and Immunogenicity of AERAS-402 in HIV-infected, Bacillus Calmette-Guerin (BCG)-Vaccinated Adults

25. juli 2016 oppdatert av: Aeras

Phase II Double-Blind, Randomized, Placebo-Controlled Study to Evaluate the Safety and Immunogenicity of AERAS-402 in HIV-infected, BCG-vaccinated Adults With CD4+ Lymphocyte Counts Greater Than 350 Cells/mm3

This was a Phase II, randomized, double-blind, placebo-controlled trial conducted at 1 site in South Africa. A total of 26 subjects were randomized 1:1 to receive 2 doses of either AERAS-402 at 3 x 10^10 vp (N=13) or placebo (N=13) on Study Days 0 and 28. Dose-escalation to a second group of 40 subjects was planned, but although no safety concerns were identified, the sponsor decided not to continue the study.

Studieoversikt

Status

Fullført

Detaljert beskrivelse

Further study details as provided by Aeras.

Studietype

Intervensjonell

Registrering (Faktiske)

26

Fase

  • Fase 2

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

    • North-West
      • Klerksdorp, North-West, Sør-Afrika, 2570
        • Aurum Institute

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

21 år til 45 år (Voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  1. Age 21 years through 45 years (i.e., subject had not yet reached his/her 46th birthday at day of randomization).
  2. Had completed the written informed consent process prior to undergoing any screening evaluations.
  3. Had BCG vaccination at least 5 years previously, documented by medical history or presence of scar.
  4. Females: Ability to avoid pregnancy for at least 6 months after receiving the last study vaccination: Women physically capable of pregnancy (not sterilized and still menstruating or within 1 year of the last menses if menopausal) must have avoided pregnancy from 28 days prior to administration of the study vaccine and must have agreed to avoid pregnancy through at least 6 months after receiving the last study vaccination. Acceptable methods of avoiding pregnancy included a sterile sexual partner, sexual abstinence (not engaging in sexual intercourse), or use of a combination of at least two forms of acceptable contraception: hormonal contraceptives (oral, injection, transdermal patch, or implant), vaginal ring, intrauterine device (IUD), and the use of a condom or a diaphragm; or the use of a condom or a diaphragm combined with spermicide.
  5. Was able to carry out activities of daily living independently.
  6. Had Body Mass Index (BMI) of at least 19 (wt./ht.2) by nomogram.
  7. Had ability to complete follow-up period as required by the protocol.
  8. Was able and willing to commit to avoiding elective surgery for at least 6 months after receiving the last study vaccination.
  9. Was able and willing to stay in contact with the study site for the duration of the study.
  10. Had committed to simultaneous enrollment in Aeras Vaccine Development Registry Protocol.
  11. Had laboratory evidence of human immunodeficiency virus (HIV) infection, defined as a positive HIV-1 ELISA test plus a positive confirmatory test (e.g., a second HIV-1 ELISA, PCR, or rapid ELISA).
  12. Had four (4) (for Group 1) or three (3) (for Group 2)* CD4+ lymphocyte count tests, each performed at least four days apart within the 42-day screening period, with at least three (for Group 1) or two (for Group 2) CD4+ lymphocyte count results greater than 350 cells / mm3.
  13. Not currently receiving antiretroviral drugs.
  14. Committed to not participate in any other clinical trials during the first 12 months of participation in this study.

Exclusion Criteria:

  1. Acute illness.
  2. Fever ≥37.5°C.
  3. Significant symptomatic infection.
  4. Used immunosuppressive medication within 42 days prior to randomization (inhaled and topical corticosteroids were permitted).
  5. Received immunoglobulin or blood products within 42 days prior to randomization.
  6. Received any investigational drug therapy or vaccine within 182 days prior to randomization.
  7. History of having received any adenovirus-vector-based vaccine.
  8. Medical history that may have compromised the evaluation of safety of the subject in the study (e.g., diabetes, seizure disorder, sickle cell disease).
  9. Pregnant or breastfeeding female, or intention to become pregnant during the study within 6 months after receiving the last study vaccination.
  10. Liver function tests >Grade 2 per the toxicity table.
  11. Currently receiving treatment for TB, or evidence of active TB disease based on history, physical examination, chest X-ray, or laboratory evaluation (INH prophylaxis was permitted).

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Forebygging
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Firemannsrom

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Placebo komparator: Placebo
Thirteen subjects received placebo vaccine that did not contain any AERAS-402.
Placebo was the identical buffer solution in which AERAS-402 is formulated.
Eksperimentell: Investigational Vaccine
Thirteen subjects received active vaccine 3 x 10^10 vp AERAS-402.
AERAS-402 is a replication-deficient serotype 35 adenovirus containing DNA that expresses a fusion protein of three Mycobacterium tuberculosis (Mtb) antigens: 85A, 85B and TB10.4.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
CD4+ Lymphocyte Count
Tidsramme: CD4+ counts from samples collected on Study days 0 and 182.
Assess the effect of AERAS-402 on the CD4+ lymphocyte count after 6 months in HIV-infected, BCG-vaccinated adult subjects with no evidence of active tuberculosis (TB disease) Change in cells/mm^3 pre-vaccination to Study Day 182
CD4+ counts from samples collected on Study days 0 and 182.

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in HIV Viral Load in HIV-infected, BCG-vaccinated Adult Subjects Before and After Administration of AERAS-402 (From Day 1 to Day 182)
Tidsramme: 6 months (day 182) post Study Day 0 vaccination.
6 months (day 182) post Study Day 0 vaccination.
Mtb-specific T Cell Response in HIV-infected BCG-vaccinated Adult Subjects With no Evidence of TB Disease
Tidsramme: Study days 28 and 56
Intracellular cytokine staining (ICS) assay immune response was expressed as the percentage of CD4+ and CD8+ T cells producing any one of three cytokines (IFN-γ, TNF-α, or IL-2) or any combination of the three cytokines simultaneously after stimulation with Ag85A, Ag85B, and TB10.4 peptide pools.
Study days 28 and 56

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Samarbeidspartnere

Etterforskere

  • Studieleder: Bernard Landry, MPH, Aeras
  • Hovedetterforsker: Gavin Churchyard, MD, PhD, Aurum Institute

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Hjelpsomme linker

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. desember 2009

Primær fullføring (Faktiske)

1. mars 2012

Studiet fullført (Faktiske)

1. mai 2012

Datoer for studieregistrering

Først innsendt

18. november 2009

Først innsendt som oppfylte QC-kriteriene

18. november 2009

Først lagt ut (Anslag)

20. november 2009

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

9. september 2016

Siste oppdatering sendt inn som oppfylte QC-kriteriene

25. juli 2016

Sist bekreftet

1. juli 2016

Mer informasjon

Begreper knyttet til denne studien

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

UBESLUTTE

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