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Not yet recruitingNCT07789912BRAVO-LMUpdated Sep 1, 2026

BRain-AVOidant Proton Craniospinal Irradiation for Leptomeningeal Metastases From Solid Tumor Malignancies

A Phase 2 interventional study of Radiation Treatments Using Brain- Avoidant Proton Craniospinal Irradiation (BRAVO- pCSI) in Leptomeningeal Metastasis, Breast Cancer and Lung Cancer (NSCLC), sponsored by University of Miami. Not yet recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-01.

Sponsored by University of Miami · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
40
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine the efficacy of BRain-AVOidant proton craniospinal irradiation (BRAVO pCSI) in adult participants with leptomeningeal metastases from solid tumors.

02

Conditions studied

  • Leptomeningeal Metastasis
  • Breast Cancer
  • Lung Cancer (NSCLC)

Keywords

  • breast cancer
  • lung cancer
  • leptomeningeal metastasis
  • craniospinal irradiation
03

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Participants with leptomeningeal metastases established radiographically and/or through Cerebrospinal Fluid (CSF) cytology or circulating tumor cells (CTCs). Participants may have newly diagnosed or recurrent LM.
  2. Pathologically confirmed breast or non-small cell lung cancer (NSCLC) primary (group 1 and). Pathologically confirmed solid tumor malignancy (group 2).
  3. Participants with adequate bone marrow function.
  4. Participants with a Karnofsky Performance Status (KPS) ≥ 60.
  5. Male and female participants ages ≥ 18 years.
  6. Female participants must be of either non-childbearing potential OR must agree to practice an effective contraceptive method.
  7. Male participants must be of either non-childbearing potential OR must agree to practice an effective contraceptive method.

Exclusion criteria

Exclusion Criteria:

  1. Participants with metastases within the memory-avoidance structures (hippocampus, corpus callosum, fornix, amygdala) that preclude developing a treatment plan that respects dosimetric constraints for these structures.
  2. Participants with multiple, serious major neurologic deficits per physician/investigator assessment including encephalopathy.
  3. Participants with extensive systemic disease and without reasonable systemic treatment options.
  4. Participants unable to undergo MRI brain and spine with gadolinium contrast.
  5. Participants who have had radiation therapy to the spinal cord with equivalent dose in 2Gy fractions (EQD2) more than 40Gy or cauda equina with EQD2 more than 50Gy using α/β of 3.
  6. Female participants who are pregnant or lactating.
  7. Participants with impaired decision-making capacity.
04

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
40 participants (estimated)

Study arms

  • Experimental
    Radiation Treatment

    Participants in this group will undergo radiation treatments using brain-avoidant proton craniospinal irradiation (CSI). The prescribed radiation dose for all participants will be 30Gy (Cobalt Gray Equivalent \[CGE\]) in 10 fractions.

    Radiation: Radiation Treatments Using Brain- Avoidant Proton Craniospinal Irradiation (BRAVO- pCSI)

  • No intervention
    Non-Interventional Arm

    Participants who decline BRAVO-pCSI will have the option to enroll in a non-interventional exploratory arm. Participants in this group will undergo the same baseline and follow-up assessments as participants receiving BRAVO-pCSI, including radiographic evaluations, cerebrospinal fluid (CSF) and serum assessments, neurocognitive testing, and quality-of-life assessments. No study intervention will be administered.

Interventions

  • RadiationRadiation Treatments Using Brain- Avoidant Proton Craniospinal Irradiation (BRAVO- pCSI)

    Participants with Leptomeningeal Metastases (LM) from breast or non-small cell lung cancer will be included in Group 1 (20 evaluable participants). Participants with LM from solid tumors of other histologies will be included in Group 2 (10 evaluable participants). All participants in Groups 1 and 2 will receive Brain-Avoidant Proton Craniospinal Irradiation (BRAVO-pCSI) at a prescribed dose of 30 Gy (Cobalt Gray Equivalent \[CGE\]) delivered in 10 fractions. Protocol treatment must begin within 21 days of study enrollment and will be delivered over approximately 2 weeks.

05

What researchers measure

Primary outcomes

  1. Central Nervous System Progression Free Survival (CNS PFS)

    Central Nervous System Progression Free Survival (CNS PFS) is defined as the elapsed time from start of brain-avoidant pCSI until the date of first event of CNS disease progression or death.

    Time frame: Up to 1.5 years

Secondary outcomes

  1. Overall Survival (OS) after brain-avoidant pCSI

    Overall Survival (OS) is defined as the elapsed time from start of brain-avoidant pCSI until date of death from any cause.

    Time frame: Up to 1.5 years

  2. Treatment Response Rate After Brain-Avoidant Proton Craniospinal Irradiation (BRAVO-pCSI)

    Response rate is defined as the proportion of participants showing best responses per Response Assessment in Neuro-Oncology Leptomeningeal Metastases (RANO LM) criteria.

    Time frame: Up to 1.5 years

  3. Evaluation of the Safety And Tolerability of Brain-Avoidant Proton Craniospinal Irradiation (BRAVO-pCSI)

    Incidence of adverse events (AEs) and serious adverse events (SAEs) related to brain-avoidant pCSI, as assessed using the NCI CTCAE Version 5.0.

    Time frame: Up to 1.5 years

  4. Rate of Cognitive Failure After Brain-Avoidant Proton Craniospinal Irradiation (BRAVO-pCSI)

    Cognitive failure measured via the reliable change index (RCI) after BRAVO pCSI.

    Time frame: 3 months

  5. Patient-Reported Depression

    Depression will be assessed using the Center for Epidemiologic Studies Depression Scale (CES-D). Total scores range from 0 to 60, with higher scores indicating greater depressive symptoms.

    Time frame: Up to 1.5 years

  6. Patient-Reported Fatigue

    Fatigue will be assessed using the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-Fatigue) Subscale Version 4 (Items 1-13). Total scores range from from 0 to 52, with higher scores indicating less fatigue.

    Time frame: Up to 1.5 years

  7. Mean Symptom Severity Score (MDASI-BT)

    Mean score on the symptom severity subscale of the MD Anderson Symptom Inventory-Brain Tumor (MDASI-BT). Scores range from 0 to 10, with higher scores indicating greater symptom severity.

    Time frame: Up to 1.5 years

  8. Mean Disease-Specific Symptom Score (MDASI-BT)

    Mean score on the brain tumor-specific symptom subscale of the MD Anderson Symptom Inventory-Brain Tumor (MDASI-BT). Scores range from 0 to 10, with higher scores indicating greater symptom burden.

    Time frame: Up to 1.5 years

  9. Mean Symptom Interference Score (MDASI-BT)

    Mean score on the symptom interference subscale of the MD Anderson Symptom Inventory-Brain Tumor (MDASI-BT). Scores range from 0 to 10, with higher scores indicating greater symptom interference.

    Time frame: Up to 1.5 years

  10. Mean Symptom Severity Score (MDASI-SP)

    Mean score on the symptom severity subscale of the MD Anderson Symptom Inventory-Spine Tumor (MDASI-SP). Scores range from 0 to 10, with higher scores indicating greater symptom severity.

    Time frame: Up to 1.5 years

  11. Mean Disease-Specific Symptom Score (MDASI-SP)

    Mean score on the spine tumor-specific symptom subscale of the MD Anderson Symptom Inventory-Spine Tumor (MDASI-SP). Scores range from 0 to 10, with higher scores indicating greater symptom burden

    Time frame: Up to 1.5 years

  12. Mean Symptom Interference Score (MDASI-SP)

    Mean score on the symptom interference subscale of the MD Anderson Symptom Inventory-Spine Tumor (MDASI-SP). Scores range from 0 to 10, with higher scores indicating greater symptom interference.

    Time frame: Up to 1.5 years

06

Study locations

1 site
  • University of Miami
    Miami, Florida 33136, United States
07

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

08

Registry details

Key details

Study ID
NCT07789912
Lead sponsor
University of Miami
Responsible party
Morgan Freret (Assistant Professor, University of Miami) — Principal investigator
First posted
Aug 27, 2026
Start date
Oct 1, 2026 (estimated)
Primary completion
Oct 1, 2030 (estimated)
Completion
Oct 1, 2030 (estimated)
Last update
Sep 1, 2026

Study contacts

Morgan Freret, MD
Contact
mfreret@miami.edu
(305) 243-5470
Markus Bredel, MD
Contact
mbredel@miami.edu
(305) 243-4263
Morgan Freret, MD
principal investigator · University of Miami Miller School of Medicine-Sylvester Cancer Center

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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