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
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.
Exclusion Criteria:
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)
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.
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.
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
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
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
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
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
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
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
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
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
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
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
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
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
Plan to share: No
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