This Funding Opportunity Announcement (FOA) invites applications for the Morris K. Udall Centers of Excellence for Parkinson’s Disease Research program. The overarching goal of this program is to support specialized research Centers that work collaboratively as well as independently to define the causes of and discover improved treatments for Parkinson’s disease (PD). A more immediate goal for each Center is to rapidly advance synergistic, interdisciplinary research programs while serving as national leaders in PD research. Applicants will identify an overall research theme that directly addresses a critical challenge in PD research. The Center theme, proposed research projects, and associated cores will inform the etiology, pathogenesis, or treatment of PD; investigations on related synucleinopathies may be included if such directly address the identified PD research challenge.