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Radiocirurgia estereotáxica de fração única comparada com radiocirurgia estereotáxica fracionada para tratamento de doença cerebral metastática intacta, ensaio FRACTIONATE

29 de setembro de 2026 atualizado por: Mayo Clinic

Ensaio de fase IIR de radiocirurgia estereotáxica de fração única (SRS) comparada com SRS fracionada (FSRS) para doença cerebral metastática intacta (FRACTIONATE)

This phase II trial compares the effect of single fraction stereotactic radiosurgery to fractionated stereotactic radiosurgery for the treatment of patients with cancer that has spread to the brain (metastatic brain disease). Stereotactic radiosurgery (SRS) is a form of radiation therapy that focuses high-power energy on a small area of the body. This trial is being done to determine if single (one) fraction stereotactic radiosurgery is better than fractionated stereotactic radiosurgery or vice versa in controlling tumor and side effects in patients with tumors that have spread to the brain.

Visão geral do estudo

Descrição detalhada

PRIMARY OBJECTIVE:

I. To ascertain if the composite endpoint of cumulative treatment failure, defined by time to either local failure or symptomatic radiation brain necrosis of the largest brain metastasis (target lesion), is increased with fractionated stereotactic radiosurgery (FSRS) compared to single fraction stereotactic radiosurgery (SSRS).

SECONDARY OBJECTIVES:

I. To ascertain whether there is improved overall survival in patients who undergo FSRS compared to patients who receive SSRS.

II. To tabulate and descriptively compare the post-treatment adverse events associated with the interventions, including the potential impact of immunotherapy and targeted therapy.

III. To compare rates of radiation necrosis in patients who receive FSRS to patients who receive SSRS.

IV. To evaluate if there is any difference in central nervous system (CNS) failure patterns (e.g. local, distant brain failure) in patients who receive FSRS compared to patients who receive SSRS.

V. To ascertain whether FSRS prolongs time to neurologic death as compared to SRS.

VI. To determine whether there is improved patient reported outcomes (Functional Assessment of Cancer Therapy [FACT]-Brain Symptom Index [FBrSI]-24) including quality of life for patients who receive FSRS compared to patients who receive SSRS.

VII. To evaluate if there is any difference in CNS failure patterns (e.g. local, distant brain failure) and symptomatic radiation necrosis rates in patients who are treated with gamma knife compared to patients who are treated with a linear accelerator platform.

VIII. To determine whether differences in time to local failure, time to necrosis, or their composite endpoint cumulative treatment failure differs between treatment arms (or other patient or treatment factors) when analyzed on a "per lesion" basis rather than the per patient basis utilized for the primary endpoint.

OUTLINE: Patients are randomized to 1 of 2 arms.

ARM A: Patients undergo single fraction SRS. Patients also undergo magnetic resonance imaging (MRI) at screening and during follow up.

ARM B: Patients undergo fractionated SRS, for 3-5 treatments, given over no more than 8 days. Patients also undergo MRI at screening and during follow up.

After completion of study treatment, patients are followed up at 3 months, every 3 months for 2 years, and then every 6 months for 3 years.

Tipo de estudo

Intervencional

Inscrição (Estimado)

90

Estágio

  • Fase 2

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.

Contato de estudo

Locais de estudo

    • Arizona
      • Scottsdale, Arizona, Estados Unidos, 85259
        • Recrutamento
        • Mayo Clinic in Arizona
        • Contato:
        • Investigador principal:
          • Sujay A. Vora, MD
    • Florida
      • Jacksonville, Florida, Estados Unidos, 32224
        • Recrutamento
        • Mayo Clinic in Florida
        • Contato:
        • Investigador principal:
          • Jennifer L. Peterson, MD
    • Minnesota
      • Albert Lea, Minnesota, Estados Unidos, 56007
        • Ainda não está recrutando
        • Mayo Clinic Health System in Albert Lea
        • Contato:
        • Investigador principal:
          • John Yeakel, MD
        • Contato:
      • Mankato, Minnesota, Estados Unidos, 56001
        • Recrutamento
        • Mayo Clinic Health Systems-Mankato
        • Contato:
        • Contato:
        • Investigador principal:
          • Jason T. Hayes, MD
      • Rochester, Minnesota, Estados Unidos, 55905
        • Recrutamento
        • Mayo Clinic in Rochester
        • Investigador principal:
          • Paul D. Brown, M.D.
        • Contato:
    • Wisconsin
      • Eau Claire, Wisconsin, Estados Unidos, 54701
        • Recrutamento
        • Mayo Clinic Health System-Eau Claire Clinic
        • Contato:
        • Investigador principal:
          • Now Bahar Alam, MD
        • Contato:
      • La Crosse, Wisconsin, Estados Unidos, 54601
        • Recrutamento
        • Mayo Clinic Health System-Franciscan Healthcare
        • Contato:
        • Investigador principal:
          • Abigail L. Stockham, MD
        • Contato:

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 e mais velhos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Descrição

Inclusion Criteria:

  • Age >= 18 years old

  • Presence of presumed brain metastases from an extra-cerebral tumor site (e.g. lung, breast, prostate, etc.)

    • Note: Dural based metastases (e.g. commonly seen in breast cancer) are eligible
  • Size of brain metastases

    • At least one intact metastasis (not previously treated with radiosurgery) must measure >= 2.0 cm and =< 4.0 cm in maximal extent on the contrasted pre-treatment magnetic resonance imaging (MRI) brain scan obtained =< 28 days prior to registration
    • If the largest lesion measures >= 2.0 to =< 4.0 cm in maximal extent the patient will be randomized
  • Able to undergo contrast enhanced MRI brain

  • Negative urine or serum pregnancy test completed =< 7 days prior to registration, for women of childbearing potential only

  • Patient is willing and able to provide written informed consent or have a legally Authorized Representative (LAR) who is responsible for the care and well-being of the potential study participant provide consent.

  • Karnofsky performance status (KPS) >= 50

  • Eastern Cooperative Oncology Group (ECOG) performance score of (PS) >= 2

  • Past radiosurgery or resection is allowed as long as no definitive evidence of progression in these locations

    • Note: Repeat radiosurgery to the same location/lesion is not allowed on this protocol

Exclusion Criteria:

  • Any patient who has received previous whole brain radiation

  • Any brain metastasis that is located in the brainstem measuring >= 2.0 cm in maximal extent

  • Any patient with definitive evidence of leptomeningeal metastasis (LMD)

    • NOTE: For the purposes of exclusion, LMD is a clinical diagnosis, defined as positive cerebrospinal fluid (CSF) cytology and/or unequivocal radiologic or clinical evidence of leptomeningeal involvement. Patients with leptomeningeal symptoms in the setting of leptomeningeal enhancement by imaging (MRI) would be considered to have LMD even in the absence of positive CSF cytology, unless a parenchymal lesion can adequately explain the neurologic symptoms and/or signs. In contrast, an asymptomatic or minimally symptomatic patient with mild or nonspecific leptomeningeal enhancement (MRI) would not be considered to have LMD. In that patient, CSF sampling is not required to formally exclude LMD, but can be performed at the investigator's discretion based on level of clinical suspicion
  • Any patient with an intact brain metastasis measuring > 4.0 cm

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: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Outro: Arm A (single fraction SRS)

Patients undergo single fraction SRS. Patients also undergo MRI at screening and during follow up.

Undergo MRI

Outros nomes:
  • Ressonância magnética
  • Varredura de imagem por ressonância magnética
  • SENHOR
  • Exame de ressonância magnética
  • Imagem NMR
  • Imagiologia médica
  • Ressonância Magnética / Ressonância Magnética Nuclear
  • ressonância magnética nuclear
  • Ressonância Magnética (MRI)
  • ressonância magnética
  • Ressonância magnética (procedimento)
  • Ressonâncias magnéticas
  • RM estrutural

Ancillary studies

Undergo single fraction SRS

Outros nomes:
  • Irradiação Estereotáxica de Feixe Externo
  • radioterapia estereotáxica de feixe externo
  • Radioterapia Estereotáxica
  • radioterapia estereotáxica
  • radiocirurgia estereotáxica
  • SRS

Undergo fractionated SRS

Outros nomes:
  • Irradiação Estereotáxica de Feixe Externo
  • radioterapia estereotáxica de feixe externo
  • Radioterapia Estereotáxica
  • radioterapia estereotáxica
  • radiocirurgia estereotáxica
  • SRS
Outro: Arm B (fractionated SRS)

Patients undergo fractionated SRS, for 3-5 treatments, given over no more than 8 days.. Patients also undergo MRI at screening and during follow up.

Undergo MRI

Outros nomes:
  • Ressonância magnética
  • Varredura de imagem por ressonância magnética
  • SENHOR
  • Exame de ressonância magnética
  • Imagem NMR
  • Imagiologia médica
  • Ressonância Magnética / Ressonância Magnética Nuclear
  • ressonância magnética nuclear
  • Ressonância Magnética (MRI)
  • ressonância magnética
  • Ressonância magnética (procedimento)
  • Ressonâncias magnéticas
  • RM estrutural

Ancillary studies

Undergo single fraction SRS

Outros nomes:
  • Irradiação Estereotáxica de Feixe Externo
  • radioterapia estereotáxica de feixe externo
  • Radioterapia Estereotáxica
  • radioterapia estereotáxica
  • radiocirurgia estereotáxica
  • SRS

Undergo fractionated SRS

Outros nomes:
  • Irradiação Estereotáxica de Feixe Externo
  • radioterapia estereotáxica de feixe externo
  • Radioterapia Estereotáxica
  • radioterapia estereotáxica
  • radiocirurgia estereotáxica
  • SRS

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Time to local failure or symptomatic radiation brain necrosis of large brain metastasis
Prazo: Up to 5 years

Will determine if the composite endpoint of time to local failure or symptomatic radiation brain necrosis of a large brain metastasis [cumulative treatment failure (CTF)] is increased with fractionated stereotactic radiosurgery (FSRS) compared to single fraction stereotactic radiosurgery (SSRS).

Up to 5 years

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Overall survival (OS)
Prazo: From study entry to death from any cause, assessed up to 5 years

OS will be estimated using the Kaplan-Meier method, where the log-rank test will be used to compare the 2 treatment arms. Medians and 95% confidence intervals will be reported.

From study entry to death from any cause, assessed up to 5 years
Incidence of adverse events
Prazo: Up to 2 years post radiation therapy

The maximum grade for each type of adverse event will be summarized using Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. The frequency and percentage of grade 3+ adverse events will be compared between the 2 treatment arms. Comparisons between arms will be made by using either the Chi-square or Fisher's Exact test.

Up to 2 years post radiation therapy
Rates of radiation necrosis
Prazo: Up to 5 years

Will compare rates of radiation necrosis in patients who receive FSRS to patients who receive SSRS. Comparisons between arms will be made by using either the Chi-square or Fisher's Exact test.

Up to 5 years
Central nervous system (CNS) failure patterns (Fractionation)
Prazo: Up to 5 years

Will evaluate if there is any difference in CNS failure patterns (e.g. local, distant brain failure) in patients who receive FSRS compared to patients who receive SSRS. Comparisons between arms will be made by using either the Chi-square or Fisher's Exact test.

Up to 5 years
Time to neurologic death
Prazo: Up to 5 years

Will ascertain whether FSRS prolongs time to neurologic death as compared to SSRS. This will be estimated using the Kaplan-Meier method, where the log-rank test will be used to compare the 2 treatment arms. Medians and 95% confidence intervals will be reported.

Up to 5 years
Quality of life (QOL)
Prazo: Up to 5 years

Will determine whether there are improved patient reported outcomes (Functional Assessment of Cancer Therapy [FACT]-Brain Symptom Index [FBrSI]-24) including quality of life for patients who receive FSRS compared to patients who receive SSRS. Changes over time in QOL from baseline will be compared between arms using the 2-sample t-test (or Wilcoxon Rank-Sum test for non-normal data). Box-plots will be used to show differences between arms graphically.

Up to 5 years
CNS failure patterns (Gamma Knife)
Prazo: Up to 5 years

Will evaluate if there is any difference in CNS failure patterns (e.g. local, distant brain failure) and symptomatic radiation necrosis rates in patients who are treated with Gamma Knife compared to patients who are treated with a linear accelerator platform. Comparisons between arms will be made by using either the Chi-square or Fisher's Exact test.

Up to 5 years
Per lesion analysis between treatment arms: time to local failure
Prazo: Up to 5 years

Will determine whether differences in time to local failure differs between treatment arms (or other patient or treatment factors) when analyzed on a "per lesion" basis rather than the per patient basis utilized for the primary endpoint. Time-to-event models (Cox and Kaplan- Meier) with sandwich estimators for covariance will be utilized to in treatment comparisons, with model comparisons completed through log-likelihood and Akaike Information Criterion.

Up to 5 years
Per lesion analysis between treatment arms: time to necrosis
Prazo: Up to 5 years

Will determine whether differences in time to necrosis differs between treatment arms (or other patient or treatment factors) when analyzed on a "per lesion" basis rather than the per patient basis utilized for the primary endpoint. Time-to-event models (Cox and Kaplan- Meier) with sandwich estimators for covariance will be utilized to in treatment comparisons, with model comparisons completed through log-likelihood and Akaike Information Criterion.

Up to 5 years
Per lesion analysis between treatment arms: endpoint CTF
Prazo: Up to 5 years

Will determine whether differences in the composite endpoint CTF differs between treatment arms (or other patient or treatment factors) when analyzed on a "per lesion" basis rather than the per patient basis utilized for the primary endpoint. Time-to-event models (Cox and Kaplan- Meier) with sandwich estimators for covariance will be utilized to in treatment comparisons, with model comparisons completed through log-likelihood and Akaike Information Criterion.

Up to 5 years

Colaboradores e Investigadores

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

Patrocinador

Investigadores

  • Investigador principal: Paul D. Brown, MD, Mayo Clinic in Rochester

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

Início do estudo (Real)

14 de março de 2022

Conclusão Primária (Estimado)

1 de agosto de 2027

Conclusão do estudo (Estimado)

1 de agosto de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

11 de janeiro de 2022

Enviado pela primeira vez que atendeu aos critérios de CQ

24 de janeiro de 2022

Primeira postagem (Real)

3 de fevereiro de 2022

Atualizações de registro de estudo

Última Atualização Postada (Real)

1 de outubro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

29 de setembro de 2026

Última verificação

1 de setembro de 2026

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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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