ERRATUM: The abstract and keywords in Joelle El-Amm, Nihar Patel, Ashley Freeman, and Jeanny B. Aragon-Ching. Metastatic Castration-Resistant Prostate Cancer: Critical Review of Enzalutamide. Clinical Medicine Insights: Oncology 2013:7 235–245 contain an error. Enzalutamide was previously known as MDV3100, not MDV300 or MDV30.