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A Safety Study of Two Dapivirine (TMC120) Vaginal Gels in the United States

24 de outubro de 2022 atualizado por: International Partnership for Microbicides, Inc.

A DOUBLE-BLIND, RANDOMIZED, PLACEBO-CONTROLLED PHASE I/II TRIAL TO EVALUATE THE SAFETY OF DAPIVIRINE GEL 4759, 0.05% 2.5g AND DAPIVIRINE GEL 4789, 0.05% 2.5g FORMULATIONS AS COMPARED TO THE VAGINAL HEC-BASED UNIVERSAL PLACEBO GEL, 2.5g IN HEALTHY HIV-NEGATIVE WOMEN

A double-blind, randomized, placebo-controlled Phase I/II trial to evaluate the safety of dapivirine Gel 4759, 0.05% 2.5 g and dapivirine Gel 4789, 0.05% 2.5 g formulations as compared to the vaginal HEC-based Universal placebo gel, 2.5 g in healthy HIV-negative women

Visão geral do estudo

Descrição detalhada

This was a double-blind, randomized, placebo-controlled trial, to be conducted over 10 months at five research centers in the USA among 180 healthy, sexually active women, to assess the safety and acceptability of dapivirine Gel 4759, 0.05% 2.5 g, and dapivirine Gel 4789, 0.05% 2.5 g, both vaginal microbicides containing dapivirine, compared to the vaginal HEC-based Universal placebo gel, 2.5 g, containing no active ingredient, used once daily for a period of 12 weeks.

Tipo de estudo

Intervencional

Inscrição (Real)

128

Estágio

  • Fase 2
  • 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
        • University of Alabama at Birmingham, Alabama Microbicide Clinical Research Site (AMCRS)
    • California
      • Torrance, California, Estados Unidos, 90502
        • Harbor-UCLA Medical Center
    • Illinois
      • Chicago, Illinois, Estados Unidos, 60612
        • University of Illinois at Chicago
    • Maryland
      • Baltimore, Maryland, Estados Unidos, 21201
        • SNBL Clinical Pharmacology Center
    • New York
      • New York, New York, Estados Unidos, 10461
        • Albert Einstein College of Medicine

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 40 anos (Adulto)

Aceita Voluntários Saudáveis

Sim

Gêneros Elegíveis para o Estudo

Fêmea

Descrição

Inclusion Criteria:

  1. Women 18 to 40 years of age inclusive who can give written informed consent
  2. Available for all visits and consent to follow all procedures scheduled for the trial
  3. Healthy and self-reported sexually active
  4. HIV-negative as determined by an HIV test at time of enrollment
  5. Willing to be on a stable form of contraception
  6. In the absence of the use of exogenous hormone(s), have a self-reported regular menstrual cycle
  7. Upon pelvic/speculum examination and colposcopy at the enrollment visit, the cervix and vagina appear normal as determined by qualified research center staff
  8. Asymptomatic for genital infections at the time of enrollment
  9. Willing to refrain from use of vaginal products or objects for 14 days prior to enrollment and for the duration of the trial.
  10. Documentation of no abnormality on Pap smear within 90 days prior to randomization;
  11. Willing to answer acceptability and adherence questionnaires throughout the trial
  12. Willing to refrain from participation in any other research trial for the duration of this trial
  13. Willing to provide adequate locator information for trial retention purposes and be reachable per local standard procedures
  14. Willing to abstain from all the following criteria beginning 48 hours prior to each trial visit:

    • Vaginal intercourse
    • Oral contact with her genitalia
    • Internal vaginal washing
    • Penetration of the vagina by fingers, sex toys, or any other objects, including medications
  15. Willing to abstain from all of the following for 3 days after biopsy procedures:

    • Vaginal intercourse
    • Oral contact with her genitalia
    • Internal vaginal washing
    • Penetration of the vagina by fingers, sex toys, or any other objects, including medications

Exclusion Criteria:

  1. Currently pregnant or having had their last pregnancy outcome within 3 months prior to screening
  2. Currently breast-feeding, or having breastfed within 3 months prior to screening
  3. Receipt of any investigational agent within 60 days prior to screening
  4. Previously participated in any HIV vaccine trial
  5. Untreated urogenital infections within 2 weeks prior to enrollment
  6. Presence of any abnormal physical finding on the vulva, vaginal walls or cervix during pelvic/speculum examination and/or colposcopy
  7. History of significant urogenital or uterine prolapse, undiagnosed vaginal bleeding, or urethral obstruction
  8. Pap smear result at screening that requires cryotherapy, biopsy or treatment (other than for infection)
  9. History of symptomatic or asymptomatic HSV-2
  10. Any Grade 2, 3 or 4 hematology, chemistry or urinalysis laboratory abnormality at baseline
  11. Unexplained, undiagnosed abnormal bleeding per vagina during or following vaginal intercourse; or urogenital surgery within 90 days prior to enrollment
  12. Any history of anaphylaxis or severe allergy resulting in angioedema; or a history of sensitivity/allergy to latex
  13. Any serious acute, chronic or progressive disease
  14. Any condition(s) that, in the opinion of the Investigator, might interfere with adherence to trial requirements or evaluation of the trial objectives

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
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Dobro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Comparador Ativo: dapivirine gel 4789
will be applied by participants once daily for 12-weeks treatment period
dapivirine gel 4789, 0.05%, 2.5g applied once daily
Outros nomes:
  • TMC120
Comparador Ativo: dapivirine gel 4759
Will be applied by participants once daily for12-weeks treatment period
dapivirine gel 4759, 0.05%, 2.5g applied once daily
Outros nomes:
  • TMC120
Comparador de Placebo: HEC-based placebo gel, 2.5g containing no Dapivirine
Will be applied once daily for 12-weeks treatment period
HEC-based universal placebo gel, 2.5g applied once daily
Outros nomes:
  • HEC-based placebo gel, 2.5g

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
The Percentage of Women With the Composite Endpoint of Abnormal Safety Findings.
Prazo: 12 weeks

A composite endpoint was defined as the percentage of participants with any post-baseline abnormal finding from pelvic/speculum examination, colposcopy finding, STI diagnoses, laboratory test of DAIDS grade 3 or higher and any product-related AE.

DAIDS severity grades are defined as follows:

Grade 1 = mild Grade 2 = moderate Grade 3 = severe Grade 4 = potentially life-threatening Grade 5 = death

12 weeks

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Changes in the Vaginal Flora
Prazo: 16 weeks

Cervicovaginal fluid specimens will be obtained to determine vaginal flora before first gel application and at Visits 3, 5, and 6. Appropriate statistical analyses incorporating repeated measures will be used to assess the changes in the vaginal flora in women using Dapivirine Gel 4759, 0.05% 2.5g, Dapivirine Gel 4789, 0.05% 2.5g or the vaginal HEC-based universal placebo gel, 2.5g.

Nugent scores were used to assess changes in vaginal flora, and were categorized into three levels: (1) negative for BV (score: 0-3); (2) altered vaginal flora (score: 4-6); and (3) BV (score: 7-10).

16 weeks
The Distribution of Dapivirine Levels Observed in Plasma Samples at Each Specified Time Point
Prazo: 12 weeks
Dapivirine levels observed in plasma will be summarized using simple descriptive statistics.
12 weeks
The Adherence to Once Daily Application of a Vaginal Microbicide Gel Over a 12-week Period in Healthy, Sexually Active, HIV-negative Women
Prazo: 12 weeks
Adherence is defined as the percentage of participants who used the gel each day of the preceding 14 days, based on participant self reports.
12 weeks
Changes in the Vaginal pH
Prazo: 12 weeks
Cervicovaginal fluid specimens will be obtained to determine vaginal pH before first gel application and at screening, enrolment and visit 5 (week 12). Appropriate statistical analyses incorporating repeated measures will be used to assess the changes in the vaginal pH in women using Dapivirine Gel 4759, 0.05% 2.5g, Dapivirine Gel 4789, 0.05% 2.5g or the vaginal HEC-based universal placebo gel, 2.5g.
12 weeks
The Distribution of Dapivirine Levels Observed in Vaginal Fluid at Each Specified Time Point.
Prazo: 12 weeks. Measured at 2, 4, and 8 weeks post-enrolment and at one of these at week 12; 24, 48, or 72 hours after gel discontinuation. (Participants were randomized to have vaginal fluid samples collected at one of these visits (5a, 5b, or 5c).
The distribution of dapivirine levels observed in each type of sample will be summarized using simple descriptive statistics. In addition, the proportion of women with detectable dapivirine concentrations will be calculated for each type of sample at each collection time point. Exploratory analyses of dapivirine concentration data will also be performed to take into account information reported in a diary regarding menses and tampon use throughout the trial.
12 weeks. Measured at 2, 4, and 8 weeks post-enrolment and at one of these at week 12; 24, 48, or 72 hours after gel discontinuation. (Participants were randomized to have vaginal fluid samples collected at one of these visits (5a, 5b, or 5c).
The Distribution of Dapivirine Levels Observed in Vaginal Tissue at Each Specified Time Point.
Prazo: 12 weeks. Measured at 2, 4, and 8 weeks post-enrolment and at one of these at week 12; 24, 48, or 72 hours after gel discontinuation. (Participants were randomized to have vaginal fluid samples collected at one of these visits (5a, 5b, or 5c).
The distribution of dapivirine levels observed in vaginal tissue sample will be summarized using simple descriptive statistics.
12 weeks. Measured at 2, 4, and 8 weeks post-enrolment and at one of these at week 12; 24, 48, or 72 hours after gel discontinuation. (Participants were randomized to have vaginal fluid samples collected at one of these visits (5a, 5b, or 5c).
Acceptability of Once Daily Application of a Vaginal Microbicide Gel Over a 12-week Period in Healthy, Sexually Active, HIV-negative Women
Prazo: 12 weeks
Acceptability was assessed as the percentage of participants at week 12 who were willing to use the gel every day if proven to prevent HIV.
12 weeks

Colaboradores e Investigadores

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

Investigadores

  • Cadeira de estudo: Dr Annalene Nel, International Partnership for Microbicides

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

Início do estudo (Real)

6 de julho de 2009

Conclusão Primária (Real)

8 de janeiro de 2011

Conclusão do estudo (Real)

8 de janeiro de 2011

Datas de inscrição no estudo

Enviado pela primeira vez

26 de novembro de 2008

Enviado pela primeira vez que atendeu aos critérios de CQ

26 de novembro de 2008

Primeira postagem (Estimativa)

27 de novembro de 2008

Atualizações de registro de estudo

Última Atualização Postada (Real)

25 de outubro de 2022

Última atualização enviada que atendeu aos critérios de controle de qualidade

24 de outubro de 2022

Última verificação

1 de outubro de 2022

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Outros números de identificação do estudo

  • IPM 020

Plano para dados de participantes individuais (IPD)

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NÃO

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