The National Institutes of Health (NIH) is offering a funding opportunity for the R21 Exploratory/Developmental Research Grant aimed at secondary analysis of existing datasets related to heart, lung, blood diseases, and sleep disorders. This initiative encourages innovative research utilizing existing human datasets to explore novel scientific ideas without the need for new primary data, with a focus on projects that align with the mission of the National Heart, Lung, and Blood Institute (NHLBI). Eligible applicants include a wide range of organizations, such as higher education institutions, non-profits, and for-profit entities, with a total funding amount of up to $75,000 available for each project lasting up to two years. Applications are due by January 28, 2025, and interested parties can reach out to NIH Grants Information at grantsinfo@nih.gov for further inquiries.