The National Institutes of Health (NIH) has announced a funding opportunity titled "Ancillary Studies to Ongoing Clinical Projects (R01 Clinical Trial Not Allowed)" under the Department of Health and Human Services. This initiative invites applications for ancillary studies that enhance ongoing clinical projects, particularly those aligned with the mission of the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), utilizing existing patient samples and data while ensuring the integrity of the parent project. Funding of up to $300,000 per year is available for projects lasting no more than four years, with an emphasis on collaborative approaches and the involvement of junior investigators. Interested applicants must submit their proposals by December 5, 2025, and can find additional information and application guidelines at the NIH grants website or contact NIH Grants Information at grantsinfo@nih.gov.