Initial Results of a Multicenter Phase 2 Trial of Stereotactic Ablative Radiation Therapy for Oligometastatic Cancer

International Journal of Radiation Oncology, Biology, Physics
Philip SuteraDwight E Heron

Abstract

Oligometastatic disease has emerged as a potentially curable state in the spectrum of cancer progression. Aggressive local therapy such as stereotactic ablative radiation therapy (SABR) may improve oncologic outcomes. Herein, we report the initial oncologic outcomes and patient-reported quality of life (PR-QoL) from a phase 2 multicenter trial for patients with oliogmetastatic disease. Patients with oligometastatic disease (1-5 metastases) were prospectively recruited between 2011 and 2017. SABR dose and fractionation was dependent on the lesion size and location. Patient follow-up occurred within 6 weeks of completion of SABR and at 3-month intervals. Patients received a Functional Assessment of Cancer Therapy-General questionnaire at baseline and at each follow-up to assess for PR-QoL. Median follow-up was calculated by reverse Kaplan-Meier method. Overall survival (OS), local progression-free survival, and distant progression-free survival were calculated using the Kaplan-Meier method. We enrolled 147 patients with oligometastatic cancer with a median age of 66.4 years (interquartile range, 59.9-74.6). The most common primary tumors included lung (21.8%, non-small cell: n = 29, small cell: n = 3), colorectal adenocarcinoma (...Continue Reading

Citations

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