Could less radiation be better for some cancers?
NCT ID NCT05010031
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study is testing whether a lower dose of radiation can effectively treat metastatic tumors that have a specific genetic change called an ATM mutation. The goal is to find the smallest effective dose to reduce side effects. About 45 adults with advanced cancer and an ATM mutation will receive palliative radiotherapy and be followed for up to 6 months.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- palliative radiotherapy
- What this could lead to
- If successful, this could show that lower radiation doses are effective for ATM-mutated tumors, reducing side effects while maintaining tumor control.
- What could go wrong
- This is a small, early-phase study with only 45 participants, so results may not apply broadly. The reduced dose might not control tumors as well as standard doses.
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
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 45 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2021
- Expected to finish
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Aug 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Histologically confirmed malignancy with at least one metastatic lesion referred for palliative radiotherapy * Pathogenic mutation in ATM (somatic and germline allowed) * ECOG performance status 0-2 * Age ≥ 18 years. * Able to provide informed consent. * Patients at reproductive potential must agree to practice an effective contraceptive method during radiation treatments. * Expected life expectancy of at least 6 months Exclusion Criteria: * Previous radiotherapy to the intended treatment site that precludes developing a treatment plan that respects normal tissue tolerances. * Serious medical co-morbidities precluding radiotherapy. * Pregnant or breast-feeding women. * Lesions excluded from de-escalation include regions in which the risk of local disease progression is unacceptably high, including CNS disease and cord compression, and areas in which re-irradiation would not be feasible, including spinal cord overlap.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
7 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Memorial Sloan Kettering Basking Ridge (All Protocol Activities)
RECRUITINGBasking Ridge, New Jersey, 10065, United States
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Memorial Sloan Kettering Bergen (All protocol activities)
RECRUITINGMontvale, New Jersey, 07645, United States
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Memorial Sloan Kettering Cancer Center (All Protocol Activities)
RECRUITINGNew York, New York, 10065, United States
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Memorial Sloan Kettering Commack (All protocol activities)
RECRUITINGCommack, New York, 11725, United States
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Memorial Sloan Kettering Monmouth (All protocol activities)
RECRUITINGMiddletown, New Jersey, 07748, United States
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Memorial Sloan Kettering Nassau (All protocol activities)
RECRUITINGUniondale, New York, 11553, United States
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Memorial Sloan Kettering Westchester (All Protocol Activities)
RECRUITINGHarrison, New York, 10604, United States
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