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- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT05413811
Aceitabilidade e viabilidade do tratamento combinado para pré-câncer cervical entre mulheres sul-africanas vivendo com HIV (ACT 2)
Visão geral do estudo
Status
Intervenção / Tratamento
Descrição detalhada
Atualmente, não há terapias médicas recomendadas para promover a eliminação da infecção pelo vírus do papiloma humano (HPV), regressão da displasia cervical ou tratamento da neoplasia intraepitelial cervical (NIC). As mulheres infectadas pelo vírus da imunodeficiência humana (HIV) correm maior risco de infecção pelo HPV, com taxas de até 45% a 90%. Apesar de serem evitáveis, anormalidades citológicas, pré-câncer cervical (neoplasia intraepitelial cervical de alto grau [CIN2/3]) e câncer cervical invasivo também ocorrem com mais frequência em mulheres infectadas pelo HIV.
Este estudo está testando se o 5-fluorouracil tópico (5FU) pode ser usado como um tratamento adjuvante controlado pelo paciente para pré-câncer cervical (CIN2/3) para ser autoadministrado após a excisão cirúrgica para reduzir o risco de CIN2/3 persistente/recorrente e progressão para câncer cervical entre mulheres infectadas pelo HIV.
Tipo de estudo
Inscrição (Real)
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
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Johannesburg
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Westdene, Johannesburg, África do Sul, 2092
- Clinical HIV Research Unit Temba Lethu Wing Helen Joseph Hospital
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Descrição
Critério de inclusão:
- Infecção confirmada por HIV-1
- Em terapia antirretroviral (ART), por pelo menos 90 dias antes da inscrição
- Biópsia cervical demonstrando NIC2/3 nos últimos 120 dias.
Critério de exclusão:
- gravidez,
- amamentação,
- pretende engravidar dentro de 180 dias após a inscrição
- tem uma infecção sexualmente transmissível ativa (mulheres podem participar depois de tratadas)
- ter um colo do útero cirurgicamente ausente
- tem história de câncer anogenital (cervical, vaginal, vulvar ou anal) ou uma biópsia suspeita de câncer cervical
- tem uma comorbidade médica que interferiria na participação no estudo.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Prevenção
- Alocação: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Quadruplicar
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
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Experimental: 5 Fluorouracil (5FU) Cream
Participants self-administered 2 grams intravaginal 5FU cream at study weeks 4, 6, 8, 10, 12, 14, 16, and 18 (8 doses over 16 weeks total).
|
Quimioterapia tópica intravaginal, creme de 5-fluorouracil
Outros nomes:
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Comparador de Placebo: Placebo Cream
Participants self-administered intravaginal placebo cream (an inert emollient that mimics the 5FU cream) at study weeks 4, 6, 8, 10, 12, 14, 16, and 18 (8 doses over 16 weeks total).
|
Creme placebo tópico intravaginal
|
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Number of Participants Retained in the Study Through Week 24
Prazo: Baseline (Week 0) through Week 24
|
Retention was defined as the number of participants who remained in follow-up and completed the Week 24 study visit.
The number and percentage of participants retained at Week 24 were reported for each study arm.
|
Baseline (Week 0) through Week 24
|
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Number of Participants With ≥80% Acceptability Summary Score at Week 10
Prazo: Week 10
|
Acceptability was defined as a summary score ≥80% on a 7-item questionnaire administered at Week 10.
Each item was rated on a 5-point Likert scale and coded from 0 (lowest acceptability) to 4 (highest acceptability), yielding a total possible score of 0 to 28.
A summary acceptability score was calculated as a percentage (0% to 100%) of the total possible score.
The number and percentage of participants meeting this definition were reported for each study arm.
|
Week 10
|
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Number of Participants With ≥80% Acceptability Summary Score by Week 24
Prazo: Week 24
|
Acceptability was defined as a summary score ≥80% on the same 7-item questionnaire administered at Week 24.
Each item was rated on a 5-point Likert scale and coded from 0 (lowest acceptability) to 4 (highest acceptability), yielding a total possible score of 0 to 28.
A summary acceptability score was calculated as a percentage (0% to 100%) of the total possible score.
The number and percentage of participants meeting this definition were reported for each study arm.
|
Week 24
|
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Number of Participants Experiencing a Treatment-Related Grade ≥2 Adverse Event or Grade 1 Genital Lesion
Prazo: Week 4 (randomization) through Week 24
|
A safety event was defined as any Grade 2 or higher adverse event (AE), or any Grade 1 AE involving a genital lesion (blister, ulceration, or pustule), that was assessed as possibly, probably, or definitely related to the study drug.
Adverse events were assessed from Week 4 (randomization) through Week 24.
The number and percentage of participants experiencing at least one such event were reported for each study arm.
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Week 4 (randomization) through Week 24
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Number of Participants Unable or Unwilling to Apply ≥50% of Study Cream Doses Due to Dose-Limiting Toxicity
Prazo: Week 4 (randomization) through Week 18
|
A tolerability event was defined as inability or unwillingness to apply ≥4 of 8 planned doses of the study treatment due to a dose-limiting toxicity (DLT).
A DLT was defined as (1) any Grade 2 or higher AE, or (2) any Grade 1 AE involving a genital lesion (blister, ulceration, or pustule), that was assessed as possibly, probably, or definitely related to study drug and resulted in an investigator decision to reduce the number of doses or discontinue study treatment.
Tolerability was assessed from randomization through the dosing period (Week 18), with follow-up censored at the last tolerability assessment for participants who exited early without experiencing an event.
The number and percentage of participants experiencing a tolerability event were reported for each study arm.
|
Week 4 (randomization) through Week 18
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Number of Participants Adherent to ≥75% of Study Cream Doses Based on Ultraviolet Inspection
Prazo: Week 4 (randomization) through Week 24
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Adherence was defined as administration of at ≥6 of 8 planned doses of study treatment, as determined by ultraviolet inspection of returned applicators.
Applicator collection occurred through Week 24, including for participants who completed dosing earlier, to allow complete ascertainment of dose use.
Each applicator was independently assessed by ≥2 reviewers; in cases of disagreement, a third reviewer adjudicated the result.
Participants were classified as adherent if ≥6 applicators showed evidence of use.
Participants who did not meet this threshold, including those with missing or incomplete applicator data, were classified as non-adherent.
The number and percentage of participants meeting this definition were reported for each study arm.
|
Week 4 (randomization) through Week 24
|
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Percent of Participants With CIN2/3 at Baseline Who Regressed to CIN1 or Normal Histology at Week 24
Prazo: Baseline (Week 0) through Week 24
|
The analysis population included all randomized participants, all of whom had CIN2 or CIN3 at baseline (Week 0) confirmed by loop electrosurgical excision procedure (LEEP) histology.
The analysis population was restricted to participants who completed the Week 24 visit and had cervical biopsy results available.
This included 89 participants in the placebo arm and 81 participants in the 5FU arm.
Regression was defined as improvement from CIN2 or CIN3 at baseline to CIN1 or normal histology at Week 24, as assessed by cervical biopsy.
Participants missing Week 24 data were not included and not considered to have experienced CIN2/3 regression.
The number and percentage of participants meeting this definition were reported for each study arm.
The Wilson score method was used to estimate 95% confidence intervals around percentages.
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Baseline (Week 0) through Week 24
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Percent of Participants With Baseline High-Risk HPV Who Achieved Genotype-Specific Clearance at Week 24
Prazo: Baseline (Week 0) through Week 24
|
The analysis population was restricted to participants with at least one high-risk HPV (hrHPV) genotype detected at baseline and with hrHPV results available at Week 24.
A total of 69 participants in the 5FU arm and 80 participants in the placebo arm met these criteria.
High-risk HPV clearance was defined as absence at Week 24 of all hrHPV genotypes detected at baseline.
Participants without baseline hrHPV infection or without Week 24 hrHPV results were excluded from this analysis.
The number and percentage of participants meeting this definition were reported for each study arm.
The Wilson score method was used to estimate 95% confidence intervals around percentages.
|
Baseline (Week 0) through Week 24
|
Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Carla Chibwesha, MD, MSc, University of North Carolina, Chapel Hill
Publicações e links úteis
Publicações Gerais
- Chibwesha CJ, Mollan KR, Teodoro NS, Keys JR, Liu C, Mulongo M, Gumede S, Pasipamire T, Faesen M, Rahangdale L. ACT 2 Clinical Trial Design: Acceptability and Feasibility of Combination Treatment for Cervical Precancer Among South African Women Living with HIV. medRxiv [Preprint]. 2025 Aug 14:2025.08.12.25333540. doi: 10.1101/2025.08.12.25333540.
- Teodoro NS, Mollan KR, Keys JR, Liu C, Mulongo M, Gumede S, Pasipamire T, Faesen M, Mischell MA, Rahangdale L, Chibwesha CJ. Acceptability and Feasibility of Combination Treatment for Cervical Precancer Among Women Living with HIV in South Africa: Primary Outcomes from the ACT 2 Randomized Trial. medRxiv [Preprint]. 2026 Mar 16:2026.03.14.26348308. doi: 10.64898/2026.03.14.26348308.
- Chibwesha CJ, Teodoro NS, Mollan KR, Keys JR, Liu C, Mulongo M, Gumede S, Pasipamire T, Faesen M, Rahangdale L. Efficacy of Combination Treatment for Cervical Precancer Among Women Living with HIV in South Africa: Secondary Outcomes from the ACT 2 Randomized Controlled Trial. medRxiv [Preprint]. 2026 Mar 22:2026.03.19.26348810. doi: 10.64898/2026.03.19.26348810.
- Chibwesha CJ, Mollan KR, Teodoro NS, Keys JR, Liu C, Mulongo M, Gumede S, Pasipamire T, Faesen M, Rahangdale L. Randomized clinical trial protocol: Acceptability and feasibility of combination treatment for cervical precancer among South African women living with HIV (ACT 2). Contemp Clin Trials. 2026 May;164:108272. doi: 10.1016/j.cct.2026.108272. Epub 2026 Mar 2.
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
- Infecções transmitidas pelo sangue
- Doenças urogenitais
- Doenças Genitais
- Neoplasias urogenitais
- Neoplasias por local
- Neoplasias
- Doenças Urogenitais Femininas
- Doenças urogenitais femininas e complicações na gravidez
- Doenças do sistema imunológico
- Infecções
- Infecções por vírus de RNA
- Doenças Virais
- Doenças uterinas
- Doenças Genitais Femininas
- Doenças Transmissíveis
- Doenças Sexualmente Transmissíveis, Virais
- Doenças Sexualmente Transmissíveis
- Infecções por Lentivírus
- Infecções por Retroviridae
- Síndromes de Deficiência Imunológica
- Neoplasias Genitais Femininas
- Doenças de Vírus Lento
- Doenças do colo do útero
- Neoplasias uterinas
- Infecções por HIV
- Síndrome da Imunodeficiência Adquirida
- Neoplasias do colo uterino
- Compostos heterocíclicos, 1 anel
- Compostos heterocíclicos
- Pirimidinas
- Uracil
- Pirimidinonas
- Fluorouracila
Outros números de identificação do estudo
- IGHID12046
- 1R01CA250850-01 (Concessão/Contrato do NIH dos EUA)
Plano para dados de participantes individuais (IPD)
Planeja compartilhar dados de participantes individuais (IPD)?
Descrição do plano IPD
Informações sobre medicamentos e dispositivos, documentos de estudo
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