1792P - Adherence to ESMO 2014 guidelines on bone-targeting agent (BTA) initiation for breast and prostate cancer patients: Real-world insights from practicing European physicians

Despite existing clinical guidelines on bone health in patients with cancer (ESMO 2014), the use of recommended BTA is sub-optimal for many patients. It is unclear if physicians’ decisions are aligned with ESMO’s guidelines to initiate BTA as soon as bone metastasis (BM) are diagnosed, irrespective of symptomatic disease, in breast cancer (BC) or castration-resistant prostate cancer (CRPC) patients. The current study describes BTA initiation in BC or CRPC patients with BM treated within routine clinical settings. Data reported by physicians (oncologists or urologists) in Europe via online data capture using physician-directed surveys and patients’ medical records as required were analysed. Adult BC or physician-defined CRPC patients included in the study received active anti-cancer treatment between February 2015 and April 2015. Adherence to the ESMO 2014 guidelines was defined as the proportion of patients with a BTA initiation within 3 months (