Abstract 450: Serum biomarkers in patients treated with stereotactic body radiation therapy (SBRT) for prostate cancer

Purpose: The goal of this study was to determine the feasibility for developing prognostic protein biomarkers in serum samples from patients undergoing Stereotactic Body Radiation Therapy (SBRT) for organ confined prostate cancers. Methods: 130 patients presenting with organ confined prostate cancers were treated with SBRT to doses of 35-36.25 Gy in 5 fractions. Peripheral blood samples were collected prospectively from patients at time 0 prior...