Abstract
The development of innovator biologics and now their biosimilars has created some unique challenges in oncology practice. The oncology advanced practitioner (OAP) must understand the key differences between the innovator biologic and biosimilars in regard to efficacy, safety, and immunogenicity. In addition, the OAP must be able to evaluate and successfully navigate factors that may affect the adoption of biosimilars, such as the perceived cost-benefit and clinician and patient acceptance.