The National Institutes of Health (NIH) is offering a federal grant opportunity titled "Research to Address Systemic and Structural Barriers and Facilitators to Improve the HIV Pre-Exposure Prophylaxis (PrEP) Care Continuum for People Who Use Substances." This initiative aims to support research that examines and addresses the systemic and structural factors affecting the awareness, uptake, and adherence to PrEP among substance users, particularly focusing on marginalized populations disproportionately impacted by substance use and HIV. The funding opportunity emphasizes the development, implementation, and evaluation of effective strategies to enhance PrEP persistence, with a total estimated program funding of $500,000 available for multiple awards, and applications are due by March 12, 2025. Interested applicants can find more information and submission guidelines at the NIH grants website or contact NIH Grants Information at grantsinfo@nih.gov for further inquiries.