PA-25-303: NIH Research Project Grant (Parent R01 Basic Experimental Studies with Humans Required)
Closed
This grant is closed. Who won this program's grants before is below, and similar open grants are at the end of the page. It is in our archive of National Institutes of Health notices from 2024.
National Institutes of Health offered grants to nonprofits, colleges and universities, state and local governments, tribes, small businesses and businesses. Applications closed on May 24, 2026.
From the official notice on Grants.gov, last changed April 21, 2026. Checked November 7, 2026.
- Award amountsNot given on Grants.gov
- Cost sharingNot required
- Funding typeGrant
About this NIH notice
- Activity codeR01
- Funded byNIMH, NEI, NIDCD
- Median yearly award$688,010
- Typical project length5 years
- R01, Research Project Grant. NIH's standard grant for a defined research project led by a named investigator, usually for up to five years. Other open R01 notices.
Projects funded under PA-25-303 were run by National Institute of Mental Health (NIMH, 12 projects), National Eye Institute (NEI, 8 projects), National Institute on Deafness and Other Communication Disorders (NIDCD, 8 projects) and National Institute on Drug Abuse (NIDA, 8 projects), and 7 more. Contact the program officer at the institute that fits your project before you apply; the notice lists them.
Application due dates, page limits and budget limits are set in the notice. Read PA-25-303 in the NIH Guide.
Key dates
| Posted | December 18, 2024 |
|---|---|
| Deadline | May 24, 2026 |
| Archived by Grants.gov | June 23, 2026 |
Who can apply
This opportunity was open to nonprofits, colleges and universities, state and local governments, tribes, small businesses and businesses.
All 15 applicant types the notice lists
- 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 (see text field entitled "Additional Information on Eligibility" for clarification)
Other Eligible Applicants include the following: Alaska Native and Native Hawaiian Serving Institutions; Asian American Native American Pacific Islander Serving Institutions (AANAPISISs); Eligible Agencies of the Federal Government; Faith-based or Community-based Organizations; Hispanic-serving Institutions; Historically Black Colleges and Universities (HBCUs); Indian/Native American Tribal Governments (Other than Federally Recognized); Non-domestic (non-U.S.) Entities (Foreign Organizations); Regional Organizations; Tribally Controlled Colleges and Universities (TCCUs) ; U.S. Territory or Possession.
Is this a realistic fit?
- Most of the money in the 18 programs behind this notice (72% over five years) went to colleges and universities.
- No cost sharing or match is required.
What the grant funds
The NIH Research Project Grant supports a discrete, specified, circumscribed project in areas representing the specific interests and competencies of the investigator(s).This Parent Notice of Funding Opportunity is for basic science experimental studies involving humans, referred to in NOT-OD-18-212 as prospective basic science studies involving human participants. These studies fall within the NIH definition of a clinical trial and also meet the definition of basic research. Types of studies that should submit under this NOFO include studies that prospectively assign human participants to conditions (i.e., experimentally manipulate independent variables) and that assess biomedical or behavioral outcomes in humans for the purpose of understanding the fundamental aspects of phenomena without specific application towards processes or products in mind. Studies conducted with specific applications toward processes or products in mind should submit under the appropriate Clinical Trials Required or Clinical Trial Optional NOFO.The proposed project must be related to the programmatic interests of one or more of the participating NIH Institutes and Centers (ICs) based on their scientific missions.
Funded under PA-25-303 so far
NIH funded 67 projects under PA-25-303 in fiscal 2026, at 47 institutions. The median yearly award was $688,010.
Who has won Aging Research grants before
From fiscal 2021 to 2025, Aging Research (93.866) awarded $19 billion across 11,026 grant awards, an average of $1.7 million per award.
| Recipient | State | Awards | Amount |
|---|---|---|---|
| The Regents of the University of California, San Francisco | California | 337 | $575 million |
| The Trustees of Columbia University in the City of New York | New York | 242 | $574 million |
| University of Southern California | California | 203 | $572 million |
| The Washington University | Missouri | 210 | $556 million |
| Regents of the University of Michigan | Michigan | 232 | $538 million |
Who has won Cardiovascular Diseases Research grants before
From fiscal 2021 to 2025, Cardiovascular Diseases Research (93.837) awarded $15 billion across 11,798 grant awards, an average of $1.2 million per award.
| Recipient | State | Awards | Amount |
|---|---|---|---|
| The Trustees of the University of Pennsylvania | Pennsylvania | 313 | $380 million |
| Brigham & Womens Hospital Inc | Massachusetts | 274 | $374 million |
| Regents of the University of Michigan | Michigan | 277 | $355 million |
| The Trustees of Columbia University in the City of New York | New York | 207 | $335 million |
| University of Pittsburgh - of the Commonwealth System of Higher Education | Pennsylvania | 295 | $320 million |
Who has won Diabetes, Digestive, and Kidney Diseases Extramural Research grants before
From fiscal 2021 to 2025, Diabetes, Digestive, and Kidney Diseases Extramural Research (93.847) awarded $9.6 billion across 7,877 grant awards, an average of $1.2 million per award.
| Recipient | State | Awards | Amount |
|---|---|---|---|
| Regents of the University of Michigan | Michigan | 273 | $345 million |
| The Trustees of the University of Pennsylvania | Pennsylvania | 187 | $272 million |
| University of Pittsburgh - of the Commonwealth System of Higher Education | Pennsylvania | 209 | $238 million |
| The Washington University | Missouri | 187 | $227 million |
| The Regents of the University of California, San Francisco | California | 176 | $208 million |
Other programs behind this notice
- Extramural Research Programs in the Neurosciences and Neurological Disorders
- Mental Health Research Grants
- Drug Use and Addiction Research Programs
- Child Health and Human Development Extramural Research
- Vision Research
- Alcohol Research Programs
- Environmental Health
- Research Related to Deafness and Communication Disorders
- Minority Health and Health Disparities Research
- Oral Diseases and Disorders Research
- Cancer Control
- Nursing Research
- Research and Training in Complementary and Integrative Health
- Lung Diseases Research
- Translation and Implementation Science Research for Heart, Lung, Blood Diseases, and Sleep Disorders
Applying now
This notice no longer takes applications. Agencies often post the same opportunity again under a new number, so check the program's notices on Grants.gov and the similar open grants below.
The notice on Grants.gov keeps its full text and attachments, which is useful for planning a resubmission.
Questions people ask
Is PA-25-303 still open?
No. It closed on May 24, 2026.
Who can apply for NIH Research Project Grant (Parent R01 Basic Experimental Studies with Humans Required)?
National Institutes of Health accepted applications from nonprofits, colleges and universities, state and local governments, tribes, small businesses and businesses. The notice adds further conditions, so read its eligibility section.
What is the deadline for NIH Research Project Grant (Parent R01 Basic Experimental Studies with Humans Required)?
Closed May 24, 2026. Applications are no longer accepted; the program's newer notices are on this page when there are any.
Who has been funded under PA-25-303?
NIH RePORTER lists 67 projects funded under PA-25-303 in fiscal 2026, at 47 institutions. The most were at Ohio State University, New York University School of Medicine, Washington University.
Who has won Environmental Health grants before?
The largest recipients over five fiscal years were Icahn School of Medicine at Mount Sinai, The Trustees of Columbia University in the City of New York, University of North Carolina at Chapel Hill. The program made 1,980 awards worth $2.1 billion in that time.
Similar open grants
- NCCIH Natural Product Mid Phase Clinical Trial (R01 Clinical Trial Required)
- NCCIH Multi-Site Feasibility Clinical Trials of Mind and Body Interventions (R01 Clinical Trial Required)
- Investigator Initiated Clinical Trials of Complementary and Integrative Interventions Delivered Remotely or via mHealth (R01 Clinical Trial Required)
- Ethical, Legal and Social Implications (ELSI) Research (R01 Clinical Trial Optional)
- Competing Revisions to Existing NIH Single Project Research Grants and Cooperative Agreements (Clinical Trial Optional)
- Interventions to expand cancer screening and preventive services to ADVANCE health in populations that experience health disparities (R01, Clinical Trial Required)