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New radiation technique aims to fight brain metastases while protecting memory

NCT ID NCT06518057

Disease control Sponsor: University of Washington Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Aug 14, 2026 · Updated 1 time

Summary

This phase 2 trial is testing a type of radiation called craniospinal irradiation that avoids the hippocampus, a brain area key for memory. It is for people with breast or lung cancer that has spread to the fluid and lining around the brain and spinal cord. The goal is to see if this approach can control the cancer longer than standard radiation while causing fewer thinking and memory side effects.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
craniospinal irradiation with hippocampal avoidance (proton therapy or VMAT)
What this could lead to
If it works, this could offer a way to control cancer spread in the brain and spine while reducing memory and thinking problems from radiation.
What could go wrong
This is a small, early-phase trial with only 22 participants, so results may not apply widely. The treatment may still cause side effects or fail to improve survival.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 22 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2025

Expected to finish

Jul 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients with breast cancer or NSCLC malignancies with leptomeningeal metastases established radiographically and/or through CSF cytology * Patients who are candidates for radiation therapy for the treatment of leptomeningeal metastases * Patients ≥ 18 years old * Karnofsky performance status (KPS) ≥ 60 or Eastern Cooperative Oncology Group (ECOG) ≥ 2 * The patient is able to provide informed consent * Hemoglobin \> 8 g/dL * Absolute neutrophil count \> 1,000/mm * Platelet count \> 100,000/mm * Participants born female at birth must either be of non-reproductive potential (i.e. post-menopausal by history \[≥ 60 years old, or with no menses for \> 1 year without an alternative medical cause\], OR history of hysterectomy, OR history of bilateral tubal ligation, OR history of bilateral oophorectomy) or must have a negative serum /urine pregnancy test within 3 weeks prior to starting radiation therapy (RT) * Patients with reproductive potential must agree to practice two highly effective contraceptive methods Exclusion Criteria: * Patients with multiple, serious major neurologic deficits per physician/investigator assessment including encephalopathy * Patients with extensive systemic disease and without reasonable systemic treatment options * Patients who are unable to undergo MRI brain and spine with gadolinium contrast * Previous radiotherapy to the intended treatment site that precludes developing a treatment plan that respects normal tissue tolerances * Gross ventricular disease * Brain metastases within 5 mm of the hippocampal contours not previously treated * Pregnant or lactating women

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Conditions

The condition(s) this trial relates to.

breast cancer breast carcinoma breast neoplasm lung cancer lung neoplasm Meningeal Carcinomatosis neoplastic meningitis non-small cell lung carcinoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Anatomic stage IV breast cancer ajcc V8 Metastatic breast carcinoma Metastatic lung non-small cell carcinoma Metastatic malignant neoplasm in the leptomeninges Stage IV lung cancer ajcc V8

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    3 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Fred Hutch/University of Washington Cancer Consortium

    RECRUITING

    Seattle, Washington, 98109, United States

  • Laura and Isaac Perlmutter Cancer Center at NYU Langone

    RECRUITING

    New York, New York, 10016, United States

  • University of California San Francisco

    NOT_YET_RECRUITING

    San Francisco, California, 94143, United States

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