The National Institutes of Health (NIH) is inviting applications for the NHLBI Early Phase Clinical Trials for Therapeutics and/or Diagnostics for heart, lung, blood, and sleep (HLBS) disorders, under the funding opportunity number PAR-24-173. This grant program aims to support investigator-initiated Phase I clinical trials (R61/R33 mechanism) that focus on developing new diagnostic and therapeutic interventions for both adults and children, facilitating trial preparation, implementation, and necessary preclinical activities. The initiative is crucial for advancing public health outcomes by accelerating the development of effective interventions for HLBS disorders. Applications are due starting May 4, 2024, with no cost-sharing requirements, and interested parties can reach out to NIH Grants Information at grantsinfo@nih.gov for further inquiries. For more details, visit the official announcement at https://grants.nih.gov/grants/guide/pa-files/PAR-24-173.html.