The National Institutes of Health (NIH) has announced a funding opportunity titled "Advancing Research on Molecular Targets and Mechanisms that Influence the Interplay Between Sex Hormones, HIV, and Addictive Substances," aimed at enhancing understanding of how sex hormones affect comorbid HIV and substance use disorders (SUDs). This initiative seeks to support studies that delineate the biological mechanisms influenced by sex hormones, with the goal of identifying potential therapeutic targets for addressing HIV-SUD comorbidity. The total funding available for this opportunity is $3 million, with individual project budgets capped at $275,000 over a two-year period. Interested applicants must submit their proposals electronically by March 13, 2025, and are required to include a Plan for Enhancing Diverse Perspectives (PEDP) as part of their application. For further inquiries, applicants can contact NIH Grants Information at grantsinfo@nih.gov.