PAR-25-355: Multidisciplinary Studies of HIV/AIDS and Aging (R21 Clinical Trial Optional)
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 2025.
National Institutes of Health offered grants to nonprofits, colleges and universities, state and local governments, tribes, small businesses and businesses. Applications closed on January 8, 2026.
From the official notice on Grants.gov, last changed January 8, 2026. Checked November 7, 2026.
- Award amountsNot given on Grants.gov
- Cost sharingNot required
- Funding typeGrant
About this NIH notice
- Activity codeR21
- Clinical trialsOptional
- Funded byNIA, NHLBI, NIDDK
- Median yearly award$436,780
- Typical project length2 years
- R21, Exploratory/Developmental Research Grant. Early, exploratory ideas that may not have preliminary data yet, usually for up to two years. Other open R21 notices.
Projects funded under PAR-25-355 were run by National Institute on Aging (NIA, 8 projects), National Heart Lung and Blood Institute (NHLBI, 3 projects), National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK, 1 project) and National Institute of Neurological Disorders and Stroke (NINDS, 1 project). 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 PAR-25-355 in the NIH Guide.
Other notices with this title
| Notice | Posted | Deadline | Status |
|---|---|---|---|
| PAR-24-092 | December 11, 2023 | Closed January 7, 2025 | Closed |
Key dates
| Posted | January 8, 2025 |
|---|---|
| Deadline | January 8, 2026 |
| Archived by Grants.gov | February 12, 2027 |
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 13 programs behind this notice (71% over five years) went to colleges and universities.
- No cost sharing or match is required.
What the grant funds
This NOFO invites applications at the intersection of HIV and aging by proposing research that aims to meet the following objectives:1) Improve the understanding of biological, clinical, and socio-behavioral aspects of aging through the lens of HIV infection and its treatment; and2) Improve approaches for testing, preventing, and treating HIV infection, and managing HIV-related comorbidities, co-infections, and complications in different populations and cultural settings by applying current aging science approaches. Proposed research must be consistent with the HIV/AIDS Research Priorities outlined by NIHs Office of AIDS Research (OAR), as described inNOT-OD-20-018.
Funded under PAR-25-355 so far
NIH funded 13 projects under PAR-25-355 in fiscal 2026, at 13 institutions. The median yearly award was $436,780.
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
- Cancer Biology Research
- Cancer Cause and Prevention Research
- Arthritis, Musculoskeletal and Skin Diseases Research
- Oral Diseases and Disorders Research
- Cancer Control
- 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 PAR-25-355 still open?
No. It closed on January 8, 2026.
Who can apply for Multidisciplinary Studies of HIV/AIDS and Aging (R21 Clinical Trial Optional)?
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 Multidisciplinary Studies of HIV/AIDS and Aging (R21 Clinical Trial Optional)?
Closed January 8, 2026. Applications are no longer accepted; the program's newer notices are on this page when there are any.
Who has been funded under PAR-25-355?
NIH RePORTER lists 13 projects funded under PAR-25-355 in fiscal 2026, at 13 institutions. The most were at State University of New York at Buffalo, University of Florida, Northwestern University.
Who has won Oral Diseases and Disorders Research grants before?
The largest recipients over five fiscal years were Regents of the University of Michigan, The Regents of the University of California, San Francisco, University of Southern California. The program made 2,263 awards worth $1.9 billion in that time.
Similar open grants
- Secondary Analysis and Integration of Existing Data to Elucidate Cancer Risk and Related Outcomes (R21 Clinical Trials Not Allowed)
- Ethical, Legal and Social Implications (ELSI) Exploratory/Developmental Research Grant (R21 Clinical Trial Optional)
- Developing novel theory and methods for understanding the genetic architecture of complex human traits (R21 Clinical Trial Not Allowed)
- Mechanisms that Impact Cancer Risk with Use of Incretin Mimetics (R21 Clinical Trial Not Allowed)
- New Approaches for Measuring Brain Changes Across Longer Timespans (R21 Clinical Trial Optional)
- Early-Stage Dissemination and Implementation Research in Communication Disorders (R21 Clinical Trial Optional)