The National Institutes of Health (NIH) is offering a grant opportunity titled "NIH Collaborative International Research Project (Parent PF5 Clinical Trial Optional)" aimed at fostering international research collaborations that align with its mission. This grant supports projects that include at least one international subproject and are relevant to the scientific interests of participating NIH Institutes, Centers, and Offices (ICOs). The initiative is crucial for advancing health sciences by leveraging unique resources and expertise available in other countries, which may not be accessible in the United States. Interested applicants can reach out to the NIH Office of Policy for Extramural Research Administration (OPERA) via email at OPERAleadership@mail.nih.gov for further information, with applications due by January 25, 2026, and an estimated award date set for September 1, 2026.