The National Institutes of Health (NIH) is offering the Ruth L. Kirschstein National Research Service Award (NRSA) Individual Senior Fellowship (Parent F33) to support experienced scientists seeking to advance their research careers or broaden their scientific expertise in health-related fields. This grant program is designed for applicants who wish to engage in full-time research training, although proposals must not include leading independent clinical trials, despite allowing research experience in sponsor-led trials. The fellowship aims to foster independent scientists and enhance biomedical research, ultimately contributing to improved health outcomes. Interested applicants can find more details and application instructions at the NIH grants website, with initial submission dates starting July 8, 2025, and a final deadline of May 8, 2028. For inquiries, contact NIH Grants Information at grantsinfo@nih.gov.