Exploratory/Developmental Research Project Grant (Parent R21 Clinical Trial Not Allowed)
🏛 National Institutes of Health (HHS-NIH11)
✓ Free, no account · Source: Grants.gov · Last verified Jul 20, 2026
Can you apply?
This grant is for researchers seeking early-stage funding to explore novel research ideas or methodologies. Eligible applicants include academic institutions, research hospitals, and nonprofit research organizations. For-profit organizations may apply if they meet NIH requirements.
U.S. domestic researchers at eligible institutions can apply. Early-stage investigators and experienced researchers both qualify. Clinical trials are not permitted under this grant mechanism.
The project must focus on developmental or exploratory work. Feasibility studies, pilot data, and proof-of-concept projects are encouraged. This is not appropriate for established, large-scale research programs.
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Program description
The NIH Exploratory/Developmental Grant supports exploratory and developmental research projects by providing support for the early and conceptual stages of these projects. These studies may involve considerable risk but may lead to a breakthrough in a particular area, or to the development of novel techniques, agents, methodologies, models, or applications that could have a major impact on a field of biomedical, behavioral, or clinical research.
Who can apply
Eligible applicants
How to apply
Application links
Required documents
- SF-424 (R&R) Application for Federal Assistance
- Project Narrative (research plan)
- Budget and Budget Justification
- Biographical Sketches of key personnel
- Letters of Support
- NIH Formatted Page Research Plan
- Facilities and Equipment descriptions
Program contact
- 👤 National Institutes of Health
- 📧 grantsinfo@nih.gov
- 📞 301-402-2541
Funding track record
Recent awards under CFDA 93.173 from the last 3 years — real organizations that won funding through this same program.
Top 10 Largest Recent Awards
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$67,501,043
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$41,811,330
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$29,666,573
-
$25,009,162
-
$22,883,624
-
$22,740,456
-
$16,596,227
-
$13,760,149
-
$12,363,350
-
$12,276,804
Top States by Funding
- MA 11 awards $143.1M
- CA 10 awards $101.6M
- IA 5 awards $77.5M
- CT 2 awards $76.3M
- MD 8 awards $65.0M
Source: USAspending.gov — federal spending transparency. Data covers last 3 years.
Funding history
Annual funding for this program — Federal obligations (CFDA 93.173). How funding has trended year over year.
| 2024 | $422,034,489 | |
| 2025 | $422,700,014 | |
| 2026 est. | $427,030,000 |
FAQ
Who can apply for this R21 grant?
Researchers at academic institutions, research hospitals, and nonprofit organizations. For-profit entities may apply with appropriate verification. Early-stage investigators are especially encouraged.
What research activities are allowed?
Exploratory projects, pilot studies, and proof-of-concept work. Clinical trials are not permitted. Developmental research to test new methodologies is appropriate.
What is the typical project duration?
R21 grants typically fund 2-year projects. Some variations allow up to 3 years depending on the specific funding opportunity.
How competitive is this funding?
Moderately competitive. Success requires strong scientific rationale and feasibility for the exploratory phase. Preliminary data strengthens applications.
What budget range should I expect?
Typical R21 awards range from $150,000 to $300,000 total costs depending on discipline. Check the specific RFP for exact limits.
💡 Tips for applicants
- Emphasize novelty and innovation. Reviewers want to see fresh approaches or new applications of existing methods.
- Present realistic timelines and milestones. Show that your exploratory work can succeed within 2 years.
- Include preliminary data. Even modest pilot findings significantly strengthen competitiveness.
- Focus on feasibility. Demonstrate that your team has the expertise to complete the project as proposed.
- Address significance. Explain why this early-stage work matters and where it could lead.
⚠️ Common mistakes
Proposing clinical trials. This grant explicitly excludes clinical trial research regardless of phase or design. Providing insufficient preliminary data reduces competitiveness and raises feasibility concerns. Proposing a full research program instead of exploratory work.
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