The National Institutes of Health (NIH) is announcing a Limited Competition Small Grant Program aimed at NHLBI Career Development recipients, with the option for clinical trials. This funding opportunity is designed to support current or recently completed NHLBI career development awardees in expanding their research objectives or initiating new studies stemming from their previous work, particularly to assist those transitioning to research independence. The program is crucial for generating preliminary data and publications that facilitate the transition from K-awards to R-awards. While applications are not currently being solicited, interested investigators are encouraged to prepare for future submissions, with the estimated synopsis posting date set for March 1, 2026, and a projected award date of October 1, 2026. For further inquiries, potential applicants can contact the NHLBI at nhlbidld_grants@nhlbi.nih.gov.