A Pilot Study of Spatially Fractionated Radiation Therapy in Patients With Extra-Cranial Soft Tissue Metastases
The purpose of this study is to find out whether lattice radiation therapy (LRT) is an effective radiation therapy technique when compared to standard stereotactic body radiation therapy (SBRT). The study will also study how the different radiation therapy techniques (LRT and SBRT) affect how many immune cells are able to attack and kill tumor cells (immune infiltration).
• Patients with biopsy confirmed advanced/metastatic solid tumors of the following types: invasive ductal or lobular breast carcinoma (all histological and intrinsic subtypes), non-small cell lung cancer (NSCLC, all subtypes), gastrointestinal squamous cell or adenocarcinomas (including pancreatic cancer), bladder cancer, renal cell carcinoma, melanoma, and soft tissue sarcoma (all subtypes), who require and are being planned for palliative radiation therapy to at least one site of RECIST-measurable extracranial metastastic disease. If a patient, requires palliative radiotherapy to additional sites, these can be treated with standard of care SBRT per departmental guidelines.
• Patients with at least one additional site of RECIST-measurable extracranial metastasis measuring at least 4 cm in one axis and suitable for elective palliative radiation therapy. Patients should be asymptomatic or minimally symptomatic (e.g controlled by oral pain medications) and not in urgent need for palliation to this site of elective experimental treatment.
• Age ≥ 18 years
• ECOG Performance Status of 0 or 1.