Memorial Sloan Kettering Cancer Center
This study will test whether reduced-dose radiotherapy is an effective treatment for metastatic tumors with an ATM mutation. The researchers want to find the lowest dose of radiation that would still be effective to treat these tumors.
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 toler…
Initial cohort (stage 1) of patients will receive 4Gy x 2. They will be re-evaluated at 2 and 6 months (+/- 2 weeks). Accounting for anticipated survival times of these patients, we expect to have 12 evaluable patients from 20 enrolled patients. For stage 2 dose reduction will be explored across two palliative regimens, with timepoint for local failure adjusted accordingly.