Quantitative imaging by automated bone scan index (BSI) as a response biomarker in standard clinical care of patients with metastatic castration-resistant prostate cancer (mCRPC) treated with enzalutamide
Background: Enzalutamide (ENZ), an androgen receptor antagonist therapy, was approved for patients (pts) with mCRPC. However, in standard of care for mCRPC pts, change in prostate specific antigen (PSA) is not accepted as an efficacy response measurement and the radiological change is inadequately measured in an interpreter-dependent subjective analysis of bone scan. Therefore, an objective effica