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Iniciar radiación inmediatamente con gammatile en la escisión de GBM versus el estándar de atención (BRIDGES)

5 de noviembre de 2026 actualizado por: GT Medical Technologies, Inc.

Estudio aleatorizado de resección y gammatile® seguido de radioterapia de haz externo concurrente (EBRT) y temozolomida (TMZ) y TMZ adyuvante versus estándar de atención en glioblastoma recién diagnosticado (GBM)

This is a Phase 3 prospective, randomized, superiority, open-label, multi-site study. The overview of this study is as follows:

  • A Screening/Baseline Period of 21 days. During this time, patients will be randomized into a 1:2 allocation of Arm A:Arm B.
  • A Perioperative/Operative Phase where patients will undergo tumor resection (Arm A) or tumor resection plus GammaTile implantation (Arm B).
  • An EBRT Prior to Start Period. This occurs within 10 business days prior to EBRT and Concurrent TMZ Phase.
  • An EBRT and Concurrent TMZ Phase, which will begin 30 ±10 days post-surgery. EBRT (30 fractions) and TMZ will be administered up to 5 days a week for 6 weeks in Arm A, and EBRT (20 fractions) and TMZ will be administered for up to 5 days a week for 4 weeks in Arm B. TMZ will be administered at a dose of 75 mg/m2/day orally for each Arm.
  • An Adjuvant TMZ Phase, which begins 28 ±7 days following the EBRT and Concurrent TMZ Phase, and is comprised of six 28-day cycles. TMZ (150-200 mg/m2/day orally) will be administered for the first 5 days of each 28-day cycle for each Arm. Tumor treating fields are allowed but are not mandated during this phase. Up to 6 additional cycles (for a total of 12) can be completed at the discretion of the Investigator.
  • An Early Discontinuation/Follow-Up Phase will occur 28 ±7 days after completion of Cycle 6 of the Adjuvant TMZ Phase, regardless of the total number of cycles completed or any delays in cycle start. If fewer than six cycles are completed, the first follow-up assessment will occur 28 ±7 days after the last administered dose of adjuvant TMZ. If patient has a qualifying event requiring entrance to Early Discontinuation Phase, the first follow-up assessment will occur as soon as feasible, but within 28 days.

For any unscheduled visits, data collected should be documented in the case report form (CRF) and must include, but are not limited to, safety evaluations, survival status, and disease status.

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Estimado)

766

Fase

  • Fase 3

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Ubicaciones de estudio

    • Arizona
      • Scottsdale, Arizona, Estados Unidos, 85251
        • Reclutamiento
        • HonorHealth Scottsdale Osborn Medical Center
        • Investigador principal:
          • John Wanebo, MD
        • Contacto:
    • California
      • Los Angeles, California, Estados Unidos, 90048
        • Reclutamiento
        • Cedars Sinai Medical Center
        • Contacto:
          • Jeremy D. Rudnick, MD
        • Investigador principal:
          • Jeremy D. Rudnick, MD
      • Los Angeles, California, Estados Unidos, 90033
        • Reclutamiento
        • Keck Medicine of USC
        • Investigador principal:
          • Eric Chang, MD
        • Contacto:
      • San Francisco, California, Estados Unidos, 94115
        • Reclutamiento
        • Sutter Health
        • Contacto:
          • Patricia Seid, MD
        • Investigador principal:
          • Patricia Seid, MD
      • San Francisco, California, Estados Unidos, 94143
        • Reclutamiento
        • University of California San Fransico
        • Contacto:
          • Jacob Young, MD
        • Investigador principal:
          • Jacob Young, MD
    • Colorado
      • Littleton, Colorado, Estados Unidos, 80122
        • Reclutamiento
        • Advent Health - Colorado
        • Contacto:
          • Darlene Bugoci, MD
        • Investigador principal:
          • Darlene Bugoci, MD
    • Florida
      • Orlando, Florida, Estados Unidos, 32804
    • Georgia
      • Atlanta, Georgia, Estados Unidos, 30322
        • Reclutamiento
        • Emory Winship Cancer Institute
        • Contacto:
          • Winship Clinical Trial Office
          • Número de teléfono: 404-778-1868
          • Correo electrónico: winshipcto@emory.edu
        • Investigador principal:
          • Kimberly B. Hoang, MD
    • Illinois
      • Chicago, Illinois, Estados Unidos, 60607
        • Reclutamiento
        • Rush University Medical Center
        • Investigador principal:
          • Ken Tatebe, MD, PhD
        • Contacto:
          • Ken Tatebe, MD, PhD
    • Kentucky
      • Louisville, Kentucky, Estados Unidos, 40241
        • Reclutamiento
        • Norton Cancer Institute - Brownsboro
        • Investigador principal:
          • Parag Sevak, MD
        • Contacto:
          • Parag Sevak, MD
    • Maryland
      • Baltimore, Maryland, Estados Unidos, 21287
        • Reclutamiento
        • Johns Hopkins University
        • Contacto:
          • Jordina Rincon-Torroella, MD
          • Número de teléfono: 410-955-1040
          • Correo electrónico: jrincon2@jhmi.edu
        • Investigador principal:
          • Jordina Rincon-Torroella, MD
    • Missouri
      • Columbia, Missouri, Estados Unidos, 65201
        • Reclutamiento
        • University of Missouri
        • Contacto:
          • Gregory Biedermann, MD
        • Investigador principal:
          • Gregory B. Biedermann, MD
    • New Hampshire
      • Lebanon, New Hampshire, Estados Unidos, 03766
        • Reclutamiento
        • Dartmouth Hitchcock Medical Center
        • Investigador principal:
          • Linton Evans, MD
        • Contacto:
    • New Jersey
      • Neptune City, New Jersey, Estados Unidos, 07753
        • Reclutamiento
        • Jersey Shore University Medical Center | Hackensack
        • Investigador principal:
          • Nitesh Patel, MD
        • Contacto:
    • New York
      • Valhalla, New York, Estados Unidos, 10595
        • Reclutamiento
        • Westchester Medical Center
        • Investigador principal:
          • Simon Hanft, MD
        • Contacto:
        • Sub-Investigador:
          • Rohil Shekher, MD
    • North Carolina
      • Greenville, North Carolina, Estados Unidos, 27834
        • Reclutamiento
        • East Carolina University
        • Investigador principal:
          • K. Stuart Lee, MD
        • Contacto:
    • Ohio
      • Columbus, Ohio, Estados Unidos, 43210
        • Reclutamiento
        • The Ohio State University
        • Investigador principal:
          • James B Elder, MD
        • Contacto:
          • James B Elder, MD
    • Pennsylvania
      • Pittsburgh, Pennsylvania, Estados Unidos, 15212
        • Reclutamiento
        • Allegheny Health Network
        • Investigador principal:
          • Matthew Shepard, MD
        • Contacto:
    • Rhode Island
      • Providence, Rhode Island, Estados Unidos, 02903
        • Reclutamiento
        • Brown University Health
        • Investigador principal:
          • Clark Chen, MD, PhD
        • Contacto:
    • South Carolina
      • Charleston, South Carolina, Estados Unidos, 29425
        • Reclutamiento
        • Medical University of South Carolina
        • Investigador principal:
          • Charlotte Rivers, MD
        • Contacto:
    • Texas
      • Houston, Texas, Estados Unidos, 77030
        • Reclutamiento
        • Houston Methodist
        • Contacto:
        • Investigador principal:
          • David Baskin, MD
    • Virginia
      • Fairfax, Virginia, Estados Unidos, 22031
        • Reclutamiento
        • Inova Schar Cancer Institute
        • Contacto:
          • Kevin Choe, MD, PhD
        • Investigador principal:
          • Kevin Choe, MD, PhD

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Major Criteria Includes the Following:

Inclusion Criteria

  • Patients must be ≥18 years of age.

  • Have radiographic suspicion of newly diagnosed glioblastoma (GBM).

    o If final pathology reports IDH mutant glioma, then the patients found to have an IDH mutation will be followed for safety and QoL measures but will not be included in the primary and secondary comparative survival and efficacy analyses.

  • Are medically and surgically appropriate for resection.

  • Have an estimated Karnofsky Performance Scale (KPS) score of ≥70.

  • Are able to receive standard of care treatment.

Exclusion Criteria

  • A previous biopsy diagnosis other than IDH wild-type GBM.
  • Have contraindications to TMZ, magnetic resonance imaging, gadolinium, or non-contrast computed tomography.
  • Have multi-focal enhancing tumors that cannot be encompassed in one operative field.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Comparador activo: Maximal safe resection followed by EBRT with concurrent TMZ followed by adjuvant TMZ (Arm A)

All patients will undergo tumor resection. Start TMZ (75 mg/m2/day orally) on the first day of EBRT and will be administered concurrently with EBRT, up to 5 days per week, for the 30-fraction course of EBRT for 6 weeks within 30±10 days post-surgery. After EBRT and concurrent TMZ phase, the first cycle begins 28 ±7 days following the last day of the EBRT and Concurrent TMZ Phase. Adjuvant TMZ includes 5 days of TMZ treatment at the start of each 28-day cycle. Additional cycles (up to a maximum of 12), which may be given at the discretion of the Investigator, will be documented, and performed in the same manner as done in the first 6 cycles.

External beam radiation therapy (EBRT) is a type of radiation therapy that is standard of care. EBRT uses a machine outside the body to deliver high-energy beams of radiation to cancerous areas within the body

Otros nombres:
  • EBRT

TMZ (Chemotherapy) is used as a first-line treatment, often in combination with radiation therapy after surgical resection of the tumor

Otros nombres:
  • TMZ
Experimental: Maximal safe resection + GammaTile followed by EBRT with concurrent TMZ then adjuvant TMZ (Arm B)

All patients will undergo tumor resection + GammaTile implantation. Start TMZ (75 mg/m2/day orally) on the first day of EBRT and will be administered concurrently with EBRT, up to 5 days per week, for the 20-fraction course of EBRT for 4 weeks within 30±10 days post-surgery. After EBRT and concurrent TMZ phase, the first cycle begins 28 ±7 days following the last day of the EBRT and Concurrent TMZ Phase. Adjuvant TMZ includes 5 days of TMZ treatment at the start of each 28-day cycle. Additional cycles (up to a maximum of 12), which may be given at the discretion of the Investigator, will be documented, and performed in the same manner as done in the first 6 cycles.

External beam radiation therapy (EBRT) is a type of radiation therapy that is standard of care. EBRT uses a machine outside the body to deliver high-energy beams of radiation to cancerous areas within the body

Otros nombres:
  • EBRT

TMZ (Chemotherapy) is used as a first-line treatment, often in combination with radiation therapy after surgical resection of the tumor

Otros nombres:
  • TMZ

GammaTiles are a U.S. FDA-cleared, surgically targeted radiation therapy for patients with certain brain tumors. GammaTile consists of bioresorbable collagen tiles embedded with Cesium-131 (Cs-131) radioactive seeds

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Overall Survival
Periodo de tiempo: Days from surgery to death.

The primary endpoint of the study is OS, defined as the day from surgery to death. Patients who are still alive (or lost to follow-up) at the time of data analysis will be censored at the last time point they were known to be alive.

Days from surgery to death.

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Progression Free Survival
Periodo de tiempo: Days from surgery to death or disease progression.

To compare PFS, defined as days from surgery to death or disease progression, between the 2 study arms based on the most current RANO Resect Group criteria;

Days from surgery to death or disease progression.
Time to next unplanned treatment
Periodo de tiempo: Time to next unplanned treatment.

To compare the time to next unplanned treatment per study arm

Time to next unplanned treatment.
Performance Status
Periodo de tiempo: 24 months.

To assess the performance status up to 24 months

24 months.
Safety Assessment
Periodo de tiempo: Study duration.

To assess the nature, severity, and frequency of AEs between the 2 study arms based on the most current CTCAE criteria

Study duration.
Quality of Life Assessments
Periodo de tiempo: COST-Score duration of study; FACT-Br up to 12 months after randomization.

Financial toxicity scale (Comprehensive Score for Financial Toxicity [COST]-score) and functional assessment of cancer therapy - brain (FACT-Br) up to 12 months after randomization.

COST-Score duration of study; FACT-Br up to 12 months after randomization.

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

10 de diciembre de 2025

Finalización primaria (Estimado)

1 de diciembre de 2031

Finalización del estudio (Estimado)

1 de diciembre de 2031

Fechas de registro del estudio

Enviado por primera vez

10 de septiembre de 2025

Primero enviado que cumplió con los criterios de control de calidad

19 de septiembre de 2025

Publicado por primera vez (Actual)

26 de septiembre de 2025

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

9 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

5 de noviembre de 2026

Última verificación

1 de noviembre de 2026

Más información

Términos relacionados con este estudio

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

Sí

producto fabricado y exportado desde los EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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