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Identifying Findings on Brain Scans That Could Help Make Better Predictions About Brain Cancer Progression, The GABLE Trial

Phase II Glioblastoma Accelerated Biomarkers Learning Environment Trial (GABLE)

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06319027
Acronym
GABLE
Enrollment
100
Registered
2024-03-19
Start date
2024-04-11
Completion date
2027-05-31
Last updated
2026-04-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Glioblastoma, IDH-Wildtype

Brief summary

This phase II trial studies whether different imaging techniques can provide additional and more accurate information than the usual approach for assessing the activity of tumors in patients with newly diagnosed glioblastoma. The usual approach for this currently is magnetic resonance imaging (MRI). This study is trying to learn more about the meaning of changes in MRI scans after treatment, as while the appearance of some of these changes may reflect progressing tumor, some may be due the treatment. Dynamic susceptibility contrast (DSC)-MRIs, along with positron emission tomography (PET) and/or magnetic resonance (MR) spectroscopy, may help doctors tell which changes are a reflection of the treatment and which changes may be due to progressing tumor.

Detailed description

PRIMARY OBJECTIVE: I. For each biomarker (dynamic susceptibility contrast-enhanced MR Imaging, fluciclovine F18 \[18F-fluciclovine\] PET, MR spectroscopy), to evaluate whether the biomarker can stratify patients with newly diagnosed glioblastoma (GBM) that have progressive enhancement within 12 weeks post-radiation therapy (XRT) into risk groups based on overall survival. SECONDARY OBJECTIVES: I. To evaluate whether each biomarker (dynamic susceptibility contrast-enhanced MR Imaging, 18F-fluciclovine PET, MR spectroscopy) can predict final determination of pseudo-progression (PsP) versus (vs.) true progression on follow-up MR imaging as evaluated by a semi-automated central reading process and by institutional radiologist readings. II. To evaluate whether a prediction model that incorporates multiple biomarkers can discriminate patients with progressive enhancement within 12 weeks post-XRT into high and low risk groups for overall survival. III. To evaluate whether clinical and imaging biomarkers are predictive of overall and progression-free survival in patients who do not show progressive enhancement within 12 weeks post-XRT. EXPLORATORY OBJECTIVE: I. To determine how different methods of defining PsP vs. true progression on imaging relate to patient survival. OUTLINE: Patients receive a gadolinium-based contrast agent and undergo DSC-MRI scans at 4 and 8 weeks after completion of standard of care (SOC) radiation therapy. Patients with evidence of disease progression then undergo MR spectroscopy or receive fluciclovine F18 intravenously (IV) and undergo PET scan within 12 weeks of SOC radiation therapy completion. After completion of study intervention, patients are followed up every 8 weeks for 1 year followed by every 12 weeks for 5 years.

Interventions

Given IV

Receive gadolinium-based contrast agent

Undergo MR spectroscopy

PROCEDUREPositron Emission Tomography

Undergo PET scan

Sponsors

ECOG-ACRIN Cancer Research Group
Lead SponsorNETWORK
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patient must be ≥ 18 years of age. * Patient must have a Karnofsky Performance Status ≥ 60%. * Patient must have newly diagnosed GBM (must be IDH wild type), with pathologic proof, based on World Health Organization (WHO) 2021 criteria. * Patient must be planning to receive standard-of-care treatment for newly diagnosed glioblastoma. * Patient must have completed an MRI prior to the diagnostic surgery for GBM and have images available for upload into Transfer of Images and Data (TRIAD). * Patient must have diagnostic surgery for GBM within 7 weeks prior to registration. * Patient must have O6-Methylguanine-DNA Methyltransferase (MGMT) methylation status ordered at time of registration. * Patient must have a post-operative (op) MRI completed within 3 weeks after diagnostic surgery for GBM and have images available for upload into TRIAD. * Patient must have no contraindications to MRI, including injection of gadolinium-based contrast agents, and demonstrated ability to tolerate MRI on pre-surgical imaging. * Patient must have no allergies to agents that may potentially be used for non-standard of care imaging (18F-fluciclovine, MR contrast). * Patient must not be pregnant or breast-feeding due to the potential harm to an unborn fetus and possible risk for adverse events in nursing infants with the interventions being used. * All patients of childbearing potential must have a blood test or urine study within 14 days prior to registration to rule out pregnancy. * A patient of childbearing potential is defined as anyone, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria: 1) has achieved menarche at some point, 2) has not undergone a hysterectomy or bilateral oophorectomy; or 3) has not been naturally postmenopausal (amenorrhea following cancer therapy does not rule out childbearing potential) for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months). * Patient must have the ability to understand and the willingness to sign a written informed consent document. Patients with impaired decision-making capacity (IDMC) who have a legally authorized representative (LAR) or caregiver and/or family member available will also be considered eligible. * Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial.

Design outcomes

Primary

MeasureTime frameDescription
Overall survival (OS)From biomarker collection to death due to any cause, assessed up to 6 yearsWill use a two-sided log-rank test to compare the difference in OS between marker positive and marker negative participants using a significance level of 0.05.
Event free survival (EFS)From biomarker collection until progression by Neurological Assessment in Neuro-Oncology (NANO) criteria or death, assessed up to 6 yearsNANO progression is defined as a ≥ 2 level worsening from baseline or best level of function in at least one domain or worsening to the highest score within ≥1 domain that is felt to be related to underlying tumor progression and not attributable to a comorbid event or change in concurrent medication. Will be based on the conditional power of a two-sided log-rank test for EFS between marker positive and marker negative participants using a significance level of 0.05.

Secondary

MeasureTime frameDescription
True disease progression and pseudo-progression (PsP)Within 12 weeks post radiation therapy (XRT)The T3 MRI will be used to determine whether progressive enhancement seen within 12 weeks post-XRT was true progression or PsP.
Progression-free survival (PFS)From surgery to the earlier of progression or death due to any cause, assessed up to 6 years

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORDaniel P Barboriak

ECOG-ACRIN Cancer Research Group

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 4, 2026