The ICOCS annual scientific meeting is held in concert with the ECNP annual meeting for the purpose of bringing together an international cohort of clinical experts and researchers to promote investigation of OC and related disorders at the basic, translational and clinical levels and to and disseminate best practices. At the annual meeting, selected presentations are invited to address topics of current concern in OCD research and treatment, and breakout sessions encourage opportunities for dialogue and collaborative study planning. The 2020 meeting will investigate the effects of the COVID pandemic on the OCD patient population. The ICOCS has been successful in both advancing research, applying for competitive grant funding and promulgating guidelines for management of OCD-affected patients.