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Safety and Immune Response Study of High-Dose Canarypox ALVAC-HIV Vaccine in Healthy, HIV Uninfected Adults

A Phase I Trial to Evaluate the Safety, Tolerability and Immunogenicity of High-Dose Live Recombinant Canarypox ALVAC-HIV Vaccine (vCP1452) in Healthy, HIV-1 Uninfected Adult Participants

The purpose of this study is to see if the experimental vaccine, ALVAC-HIV (vCP1452) is safe and to study how the immune system responds to the vaccine. This trial is designed to determine whether a higher vaccine dose (6 times the usual dose) will elicit a higher immune response.

As of May 2001, over 200 people received the ALVAC-HIV (vCP1452) vaccine at the lower dose. The higher dose of the vaccine to be used in this study has not been given to humans previously. High doses of a similar vaccine have been given to a few people without serious side effects. In a recent study done in mice, higher doses of ALVAC-HIV produced stronger immune responses. It is possible that the doses of ALVAC-HIV given to humans are below the amount needed for the maximum immune response. Because the exact relationship between an increased immune response and its effectiveness in preventing HIV infection is uncertain, the HVTN will use the highest dose that can be manufactured.

Visão geral do estudo

Status

Concluído

Descrição detalhada

To date, adverse reactions to immunization with the various ALVAC-HIV candidate vaccines, including ALVAC-HIV (vCP1452), have been similar to those observed in healthy adults who have received other licensed vaccines of similar types. In a previous trial, even high doses of recombinant ALVAC vaccine were well tolerated in a group of participants that were significantly immunocompromised. In a recent study done in mice concerning dose escalation using the ALVAC-HIV vectors, the data demonstrated more robust immune responses with higher doses of ALVAC-HIV (vCP1452) in mice. It is certainly possible that the doses of ALVAC-HIV given to humans are well below the amount needed for a maximal cytotoxic T lymphocyte (CTL) response. As the predictive value of a CTL response is at present unknown with respect to its efficacy in preventing or ameliorating HIV acquisition or infection, the HVTN will utilize the highest dose that can be currently manufactured.

All study products are to be administered intramuscularly. Participants will receive 1 of 3 injections. Group A will receive a high dose of vaccine, group B will receive a low dose of vaccine, and group C will receive a placebo. Participants are inoculated at 4 time points. Assessment of product safety includes clinical observation, monitoring of hematological, chemical, and immunologic parameters, and a social harms questionnaire. Safety will be evaluated by monitoring of participants for local and systemic adverse reactions during the course of the trial. Participants will be monitored longitudinally for HIV-specific serologic and cellular immune responses.

Tipo de estudo

Intervencional

Inscrição (Real)

110

Estágio

  • Fase 1

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

    • Alabama
      • Birmingham, Alabama, Estados Unidos, 35294
        • Alabama Vaccine CRS
    • California
      • San Francisco, California, Estados Unidos, 94102
        • San Francisco Vaccine and Prevention CRS
      • San Francisco, California, Estados Unidos
        • UCSF, Gen. Clinical Research Ctr., Mt. Zion Hosp.
    • Maryland
      • Baltimore, Maryland, Estados Unidos
        • Project Brave HIV Vaccine CRS
    • Massachusetts
      • Boston, Massachusetts, Estados Unidos, 02115
        • Brigham and Women's Hosp. CRS
      • Boston, Massachusetts, Estados Unidos, 02115
        • Fenway Community Health Clinical Research Site (FCHCRS)
    • Missouri
      • Saint Louis, Missouri, Estados Unidos, 63110
        • Saint Louis Univ Health Sciences Ctr
    • New York
      • New York, New York, Estados Unidos, 10021
        • NY Blood Ctr./Union Square CRS
      • Rochester, New York, Estados Unidos, 14642
        • Univ. of Rochester HVTN CRS
    • Rhode Island
      • Providence, Rhode Island, Estados Unidos, 02906
        • Miriam Hospital's HVTU
    • Tennessee
      • Nashville, Tennessee, Estados Unidos, 37232
        • Vanderbilt Vaccine CRS
    • Virginia
      • Annandale, Virginia, Estados Unidos
        • Infectious Diseases Physicians, Inc.
    • Washington
      • Seattle, Washington, Estados Unidos, 98109
        • FHCRC/UW Vaccine CRS

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos a 60 anos (Adulto)

Aceita Voluntários Saudáveis

Sim

Gêneros Elegíveis para o Estudo

Tudo

Descrição

Inclusion Criteria

Participants may be eligible for this study if they:

  • Are between the ages of 18 and 60.
  • Are in good general health.
  • Have a CD4 count of 400 or more cells/mm3.
  • Do not have hepatitis C or active hepatitis B.
  • Have had a negative HIV blood test within 8 weeks prior to enrollment.
  • Use approved methods of contraception.
  • Have access to a participating site and are available for follow-up for 18 months.
  • Complete a questionnaire evaluating the participant's understanding of the study prior to enrollment.
  • Give written informed consent.

Exclusion Criteria

Participants may not be eligible for this study if they:

  • Are pregnant or breast-feeding.
  • Have received a live vaccine within 30 days prior to enrollment.
  • Have received a killed vaccine or allergy treatment with injections within 14 days prior to study vaccine.
  • Have used experimental research agents within 30 days prior to enrollment.
  • Have received HIV-1 vaccines or placebo in a previous HIV vaccine trial.
  • Have received blood products 120 days before HIV screening.
  • Have received immunoglobulin 60 days before HIV screening.
  • Have a history of serious harmful reactions to vaccines.
  • Have a history of disease of the immune system.
  • Have a history of cancer, unless it has been surgically removed and in the estimate of the investigator is not likely to happen again during the study period.
  • Are using or have used (within past 6 months) drugs that interfere with the immune system.
  • Have a history of type I or type II diabetes.
  • Have thyroid disease.
  • Have unstable asthma.
  • Are currently taking preventive anti-TB therapy.
  • Have a seizure disorder.
  • Have a bleeding disorder that was diagnosed by a physician.
  • Have had their spleen removed.
  • Have angioedema with serious episodes.
  • Have active syphilis.
  • Have hypertension.
  • Have mental problems that would interfere with the protocol.
  • Have any other problems that, in the judgment of the investigator, would interfere with the study.
  • Have a body mass index less than 20.
  • Are allergic or sensitive to egg products.
  • Have active tuberculosis.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Prevenção
  • Mascaramento: Dobro

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Investigadores

  • Cadeira de estudo: Paul Goepfert

Publicações e links úteis

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Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Conclusão do estudo (Real)

1 de dezembro de 2005

Datas de inscrição no estudo

Enviado pela primeira vez

29 de novembro de 2001

Enviado pela primeira vez que atendeu aos critérios de CQ

29 de novembro de 2001

Primeira postagem (Estimativa)

30 de novembro de 2001

Atualizações de registro de estudo

Última Atualização Postada (Real)

14 de outubro de 2021

Última atualização enviada que atendeu aos critérios de controle de qualidade

13 de outubro de 2021

Última verificação

1 de outubro de 2021

Mais Informações

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .

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