Key Opinion Leaders (KOLs) play a critical role in educating the medical and scientific communities to build awareness about the latest medical therapies and novel mechanisms of action. KOL relationship management has thus emerged as a necessary and vital part of brand success. In an effort to examine how leading pharmaceutical companies approach KOL management, this research by Best Practices, LLC identifies the key elements of KOL management excellence, from structure and strategies to MSL roles and KOL activity assessment.