NIH Exploratory/Developmental Research Project Grant (Parent R21 Clinical Trial Not Allowed) | PA 25 304

Opportunity Information: Apply for PA 25 304

The NIH Exploratory/Developmental Research Project Grant (Parent R21 Clinical Trial Not Allowed), Funding Opportunity Number PA 25 304, is a discretionary grant program run by the National Institutes of Health (NIH) that is designed to fund early-stage, high-potential research ideas. The R21 mechanism is meant for projects that are still in the exploratory or developmental phase, where the main goal is to test new concepts, generate initial evidence, or build the foundation for larger and more definitive studies later on. NIH explicitly positions this award for work that may be higher risk than typical research proposals, but that could pay off with major advances, including breakthrough findings or the creation of new tools that shift how a research area operates.

The core purpose of this opportunity is to support research at the "early and conceptual stages." That includes efforts aimed at developing novel techniques, agents, methodologies, models, or applications that could meaningfully influence biomedical, behavioral, or clinical research fields. In practice, R21 projects often focus on proof-of-concept experiments, pilot studies, feasibility testing, early prototype development, or preliminary validation of a new approach. The emphasis is on innovation and potential impact rather than on having a fully mature evidence base at the time of application. At the same time, the title makes clear that clinical trials are not allowed under this particular parent announcement, meaning applicants must ensure the proposed work does not meet NIH's definition of a clinical trial.

A wide range of organizations are eligible to apply, reflecting NIH's interest in supporting research capacity across many sectors. Eligible applicants include state, county, and local governments; special district governments; independent school districts; public and state-controlled institutions of higher education; private institutions of higher education; federally recognized Native American tribal governments; Native American tribal organizations (other than federally recognized tribal governments); public housing authorities and Indian housing authorities; nonprofits with or without 501(c)(3) status (as long as they are not institutions of higher education when applying under those nonprofit categories); for-profit organizations other than small businesses; and small businesses. In addition, the opportunity highlights other eligible applicants such as Alaska Native and Native Hawaiian Serving Institutions; Asian American Native American Pacific Islander Serving Institutions (AANAPISIs); Hispanic-serving Institutions; Historically Black Colleges and Universities (HBCUs); Tribally Controlled Colleges and Universities (TCCUs); faith-based or community-based organizations; eligible federal agencies; regional organizations; tribal governments that are not federally recognized; U.S. territories or possessions; and non-U.S. entities (foreign organizations). This breadth allows research ideas to come from traditional academic centers as well as community-rooted organizations, tribal entities, and international institutions, depending on the NIH institute or center mission alignment and any additional policy considerations.

From an administrative standpoint, this is a grant (Funding Instrument Type: Grant) listed under broad public service areas including education, environment, health, income security, and social services, and it is associated with multiple CFDA/Assistance Listing numbers (including 93.113, 93.121, 93.143, 93.172, 93.173, 93.213, 93.233, 93.242, 93.273, 93.279, 93.286, 93.310, 93.361, 93.837, 93.838, 93.839, 93.840, 93.855, 93.865, 93.866, 93.867, and 93.879), reflecting that many NIH institutes and centers may use the parent R21 announcement to support mission-relevant exploratory projects. The opportunity record shows an original closing date of 2028-01-07 and a creation date of 2024-12-18. The listing does not specify an award ceiling or expected number of awards in the provided data, which is common for parent NIH announcements where actual funding levels depend on institute priorities, availability of funds, application volume, and scientific merit.

Overall, this R21 opportunity is best understood as NIH's entry point for bold, early research ideas that are not ready for a large-scale project but are strong enough in rationale and approach to justify targeted support. It is intended to help researchers and organizations produce the initial results, methods, or enabling resources that can unlock a new line of investigation or set up a future, more comprehensive NIH application, while staying clearly outside the boundaries of NIH-defined clinical trials for this specific announcement.

• The National Institutes of Health in the education, environment, health, income security and social services sector is offering a public funding opportunity titled "NIH Exploratory/Developmental Research Project Grant (Parent R21 Clinical Trial Not Allowed)" and is now available to receive applicants.
• Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 93.113, 93.121, 93.143, 93.172, 93.173, 93.213, 93.233, 93.242, 93.273, 93.279, 93.286, 93.310, 93.361, 93.837, 93.838, 93.839, 93.840, 93.855, 93.865, 93.866, 93.867, 93.879.
• This funding opportunity was created on 2024-12-18.
• Applicants must submit their applications by 2028-01-07.
• Eligible applicants include: State governments, County governments, City or township governments, Special district governments, Independent school districts, Public and State controlled institutions of higher education, Native American tribal governments (Federally recognized), Public housing authorities/Indian housing authorities, Native American tribal organizations (other than Federally recognized tribal governments), Nonprofits having a 501 (c) (3) status with the IRS, other than institutions of higher education, Nonprofits that do not have a 501 (c) (3) status with the IRS, other than institutions of higher education, Private institutions of higher education, For-profit organizations other than small businesses, Small businesses, Others.

Apply for PA 25 304

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