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Enkeltfraktion stereootaktisk radiokirurgi sammenlignet med fraktioneret stereootaktisk radiokirurgi til behandling af intakt metastatisk hjernesygdom, FRACTIONATE forsøg

29. september 2026 opdateret af: Mayo Clinic

Fase IIR-forsøg med enkeltfraktion stereootaktisk radiokirurgi (SRS) sammenlignet med fraktioneret SRS (FSRS) for intakt metastatisk hjernesygdom (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.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

90

Fase

  • Fase 2

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Arizona
      • Scottsdale, Arizona, Forenede Stater, 85259
        • Rekruttering
        • Mayo Clinic in Arizona
        • Kontakt:
        • Ledende efterforsker:
          • Sujay A. Vora, MD
    • Florida
      • Jacksonville, Florida, Forenede Stater, 32224
        • Rekruttering
        • Mayo Clinic in Florida
        • Kontakt:
        • Ledende efterforsker:
          • Jennifer L. Peterson, MD
    • Minnesota
      • Albert Lea, Minnesota, Forenede Stater, 56007
        • Ikke rekrutterer endnu
        • Mayo Clinic Health System in Albert Lea
        • Kontakt:
        • Ledende efterforsker:
          • John Yeakel, MD
        • Kontakt:
      • Mankato, Minnesota, Forenede Stater, 56001
        • Rekruttering
        • Mayo Clinic Health Systems-Mankato
        • Kontakt:
        • Kontakt:
        • Ledende efterforsker:
          • Jason T. Hayes, MD
      • Rochester, Minnesota, Forenede Stater, 55905
        • Rekruttering
        • Mayo Clinic in Rochester
        • Ledende efterforsker:
          • Paul D. Brown, M.D.
        • Kontakt:
    • Wisconsin
      • Eau Claire, Wisconsin, Forenede Stater, 54701
        • Rekruttering
        • Mayo Clinic Health System-Eau Claire Clinic
        • Kontakt:
        • Ledende efterforsker:
          • Now Bahar Alam, MD
        • Kontakt:
      • La Crosse, Wisconsin, Forenede Stater, 54601
        • Rekruttering
        • Mayo Clinic Health System-Franciscan Healthcare
        • Kontakt:
        • Ledende efterforsker:
          • Abigail L. Stockham, MD
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

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

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Andet: Arm A (single fraction SRS)

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

Undergo MRI

Andre navne:
  • MR
  • Magnetisk resonans
  • Magnetisk resonansbilledscanning
  • HR
  • MR billeddannelse
  • MR-scanning
  • NMR billeddannelse
  • NMRI
  • Medicinsk billeddannelse
  • Magnetisk resonans / Kernemagnetisk resonans
  • kernemagnetisk resonansbilleddannelse
  • Magnetisk resonansbilleddannelse (MRI)
  • sMRI
  • Magnetisk resonansbilleddannelse (procedure)
  • MRI'er
  • Strukturel MR

Ancillary studies

Undergo single fraction SRS

Andre navne:
  • Stereotaktisk ekstern strålebestråling
  • stereotaktisk ekstern strålebehandling
  • Stereotaktisk strålebehandling
  • stereotaksisk strålebehandling
  • stereotaksisk radiokirurgi
  • SRS

Undergo fractionated SRS

Andre navne:
  • Stereotaktisk ekstern strålebestråling
  • stereotaktisk ekstern strålebehandling
  • Stereotaktisk strålebehandling
  • stereotaksisk strålebehandling
  • stereotaksisk radiokirurgi
  • SRS
Andet: 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

Andre navne:
  • MR
  • Magnetisk resonans
  • Magnetisk resonansbilledscanning
  • HR
  • MR billeddannelse
  • MR-scanning
  • NMR billeddannelse
  • NMRI
  • Medicinsk billeddannelse
  • Magnetisk resonans / Kernemagnetisk resonans
  • kernemagnetisk resonansbilleddannelse
  • Magnetisk resonansbilleddannelse (MRI)
  • sMRI
  • Magnetisk resonansbilleddannelse (procedure)
  • MRI'er
  • Strukturel MR

Ancillary studies

Undergo single fraction SRS

Andre navne:
  • Stereotaktisk ekstern strålebestråling
  • stereotaktisk ekstern strålebehandling
  • Stereotaktisk strålebehandling
  • stereotaksisk strålebehandling
  • stereotaksisk radiokirurgi
  • SRS

Undergo fractionated SRS

Andre navne:
  • Stereotaktisk ekstern strålebestråling
  • stereotaktisk ekstern strålebehandling
  • Stereotaktisk strålebehandling
  • stereotaksisk strålebehandling
  • stereotaksisk radiokirurgi
  • SRS

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Time to local failure or symptomatic radiation brain necrosis of large brain metastasis
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Overall survival (OS)
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Paul D. Brown, MD, Mayo Clinic in Rochester

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

14. marts 2022

Primær færdiggørelse (Anslået)

1. august 2027

Studieafslutning (Anslået)

1. august 2027

Datoer for studieregistrering

Først indsendt

11. januar 2022

Først indsendt, der opfyldte QC-kriterier

24. januar 2022

Først opslået (Faktiske)

3. februar 2022

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

1. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

29. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • GMROR2163
  • NCI-2021-14230 (Registry Identifier: CTRP (Clinical Trial Reporting Program))
  • 21-003768 (Anden identifikator: Mayo Clinic Institutional Review Board)

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .