The National Institutes of Health (NIH) is offering a funding opportunity for Clinical Trial Pilot Studies (R34 Clinical Trial Optional) through the National Heart, Lung, and Blood Institute (NHLBI). This initiative aims to support research that provides essential information for the design of future Phase II-IV clinical trials focused on heart, lung, blood, and sleep disorders, requiring applicants to demonstrate the scientific necessity and sufficiency of their proposed studies. The NHLBI emphasizes inclusivity by mandating a Plan for Enhancing Diverse Perspectives (PEDP) to enhance the project's scientific merit, with a budget of up to $450,000 in direct costs available over a maximum project period of three years. Interested applicants should note that the application period opens on January 16, 2025, and the final submission deadline is January 7, 2027; for further inquiries, they can contact NIH Grants Information at grantsinfo@nih.gov.