NIH Research Project Grant (Parent R01 Basic Experimental Studies with Humans Required)

The National Institutes of Health (NIH), under the U.S. Department of Health and Human Services, offers the Research Project Grant (R01) Basic Experimental Studies with Humans Required funding opportunity to support investigator-initiated research projects that advance fundamental scientific knowledge. NIH is the primary federal agency responsible for biomedical and public health research in the United States, operating through multiple institutes and centers that collectively address a wide range of health-related topics. This funding opportunity represents a long-standing mechanism for supporting discrete, hypothesis-driven research projects aligned with NIH’s mission to improve human health and expand scientific understanding. The purpose of this funding opportunity is to support basic science experimental studies involving human participants. These studies must prospectively assign participants to conditions or interventions and evaluate biomedical or behavioral outcomes, while focusing on understanding fundamental mechanisms rather than developing specific products or clinical applications. The program emphasizes research that contributes to foundational knowledge in areas such as disease processes, human development, mental health, environmental effects, and biological systems, ultimately informing future translational or applied work. Funding under this opportunity is flexible, with no explicit cap on budget amounts, provided the requested funds are justified by the scope of the proposed research. The project period may extend up to five years, allowing investigators to conduct comprehensive and methodologically rigorous studies. There is no requirement for cost sharing or matching funds. Allowable costs must align with NIH Grants Policy Statement guidelines and include personnel, equipment, supplies, and other research-related expenses necessary to complete the proposed work. Eligibility for this program is broad and inclusive, encompassing higher education institutions, nonprofit organizations, for-profit entities, small businesses, federal and local governments, tribal organizations, and foreign institutions. Individual principal investigators must possess the necessary expertise and institutional affiliation to carry out the proposed research. Applicants must complete required registrations, including SAM, eRA Commons, and Grants.gov, prior to submission. Multiple applications may be submitted by the same organization if each is scientifically distinct. The application process requires submission through Grants.gov or NIH systems such as ASSIST, followed by tracking in eRA Commons. Applicants must adhere strictly to NIH application instructions, including completion of forms such as the SF424 and PHS Human Subjects and Clinical Trials Information. A Data Management and Sharing Plan is required for all applications. Proposals must include detailed research plans, budgets, and compliance documentation, particularly for studies involving human subjects. Applications are evaluated through NIH’s peer review process based on criteria including significance, innovation, approach, investigator qualifications, and research environment. Additional considerations include protections for human subjects, feasibility of study design, and adequacy of resources. Applications undergo both scientific merit review and advisory council review before funding decisions are made. Awards are contingent on available funding and alignment with NIH priorities. The funding opportunity operates on a recurring schedule with multiple standard due dates each year, typically in February, June, and October cycles, with corresponding review and award timelines. The current closing date for applications is May 24, 2026, following an updated expiration timeline. Applicants are encouraged to submit early to allow time for corrections. The program is expected to continue recurring annually with similar cycles, providing ongoing opportunities for researchers to apply. Contact support is available through NIH service desks and general grants information channels for application assistance and technical inquiries.

Focus on strong scientific rationale, rigorous methodology, and alignment with NIH priorities; ensure compliance with all submission requirements and human subjects protections