The National Institutes of Health (NIH) is preparing to solicit applications for the establishment of a Clinical Coordinating Center (CCC) dedicated to multi-site investigator-initiated clinical trials, including efficacy, comparative effectiveness, and implementation research. The objective of this opportunity is to develop a comprehensive scientific and operational plan for the clinical trials that align with the research mission of the National Heart, Lung, and Blood Institute (NHLBI) and meet the NIH definition of a clinical trial. This cooperative agreement will follow a bi-phasic, milestone-driven award mechanism and requires the submission of both a CCC application and a collaborating Data Coordinating Center (DCC) application by the same deadline. Interested applicants can reach out to Dr. Yves Rosenberg at rosenbey@nhlbi.nih.gov or call 301-435-0550 for further information. The estimated synopsis post date is July 11, 2025, with applications expected to close on October 13, 2025, and awards anticipated by May 1, 2026.