NIH PAR · ORIP · R21

PAR-25-273: Development of Animal Models and Related Biological Materials for Research (R21 Clinical Trial Not Allowed)

Reviewed by Dr. Meng ZhaoLast reviewed October 16, 2026Data refreshed October 16, 2026Editorial standards

Open for applicationsNext due date: Oct 16, 2026Expires Jan 8, 2028

This notice of funding opportunity (NOFO) encourages innovative research to develop, improve, characterize, and preserve animal models as well as animal model related biological materials, technologies, and new approach methodologies (NAMs) for studies relevant to human health and disease. This NOFO also seeks projects aimed at improving the diagnosis and control of diseases that could confound or interfere with animal use in biomedical research. The proposed project must have broad applicability to multiple NIH Institutes or Centers (ICs) to align with the NIH-wide mission of the Office of Research Infrastructure Programs (ORIP). The proposed studies must include animal models and explore…

Full NOFO in the NIH Guide Apply on Grants.gov

NOFO number
PAR-25-273
Type
PAR
Activity code
R21
Primary institute
ORIP
Clinical trials
Not Allowed
Posted
Nov 15, 2024
Opens
Jan 16, 2025
Expires
Jan 8, 2028

PAR-25-273 due dates

4 application due dates remain before the NOFO expires. Dates marked * are NIH standard due dates. Check the related notices below for changes NIH made after posting.

Application due dates and review cycles for PAR-25-273
Application Due Date(s)Renewal / Resubmission / Revision (as allowed)AIDS - New/Renewal/Resubmission/Revision, as allowedScientific Merit ReviewAdvisory Council ReviewEarliest Start Date
February 16, 2025March 16, 2025 *May 07, 2025 *July 2025October 2025December 2025
June 16, 2025July 16, 2025 *September 07, 2025 *November 2025January 2026April 2026
October 16, 2025November 16, 2025 *January 07, 2026 *March 2026May 2026July 2026
February 16, 2026March 16, 2026 *May 07, 2026 *July 2026October 2026December 2026
June 16, 2026July 16, 2026 *Not ApplicableNovember 2026January 2027April 2027
October 16, 2026November 16, 2026 *Not ApplicableMarch 2027May 2027July 2027
February 16, 2027March 16, 2027 *Not ApplicableJuly 2027October 2027December 2027
June 16, 2027July 16, 2027 *Not ApplicableNovember 2027January 2028April 2028
October 16, 2027November 16, 2027 *Not ApplicableMarch 2028May 2028July 2028

Projects funded under PAR-25-273

NIH RePORTER lists 11 projects funded under PAR-25-273 in FY2022–FY2026, with $4.7M in award dollars. Counts include each project's later non-competing years, which keep the original NOFO number.

Projects funded

11

Distinct projects, FY2022–FY2026

New awards

11

Type 1 (new project) award records

NIH funding

$4.7M

Award dollars under PAR-25-273, FY2022–FY2026

Funding by fiscal year

Award records, new awards, and funding by fiscal year under PAR-25-273
Fiscal yearAward recordsNew awardsFunding
FY202200$0
FY202300$0
FY202400$0
FY202500$0
FY20261111$4.7M

Institutions with the most funding

  1. Seattle Children's Hospital$516K · 1 project
  2. Jackson Laboratory$487K · 1 project
  3. Univ of Massachusetts Med Sch Worcester$461K · 1 project
  4. University of California, San Francisco$451K · 1 project
  5. Duke University$444K · 1 project
  6. Ohio State University$433K · 1 project
  7. Cornell University$432K · 1 project
  8. University of California Santa Barbara$430K · 1 project

Funding institutes

  • OD$4.7M · 11

Activity codes funded

Most recent new awards

What its predecessor PAR-21-167 funded

PAR-25-273 reissues PAR-21-167. Its funding history is the best guide to who wins under this program: 48 projects and $20.8M in FY2022–FY2026.

Projects funded

48

Distinct projects, FY2022–FY2026

New awards

48

Type 1 (new project) award records

NIH funding

$20.8M

Award dollars under PAR-21-167, FY2022–FY2026

Funding by fiscal year

Award records, new awards, and funding by fiscal year under PAR-21-167
Fiscal yearAward recordsNew awardsFunding
FY20221111$2.7M
FY20232312$4.7M
FY20242613$5.7M
FY20252512$5.6M
FY2026100$2.0M

Institutions with the most funding

  1. Cincinnati Childrens Hosp Med Ctr$1.3M · 3 projects
  2. Baylor College of Medicine$1.3M · 3 projects
  3. Jackson Laboratory$1.0M · 2 projects
  4. University of Texas at Austin$946K · 2 projects
  5. University of California, San Francisco$895K · 2 projects
  6. Duke University$853K · 2 projects
  7. Henry M. Jackson Fdn for the Adv Mil/Med$849K · 2 projects
  8. University of Nebraska Medical Center$844K · 2 projects

Funding institutes

  • OD$20.8M · 95

Activity codes funded

Most recent new awards

FY2026 closed on September 30, 2026, but NIH keeps posting that year's awards to RePORTER for several weeks. FY2026 figures reflect records available on October 16, 2026 and may rise slightly at the next refresh.

Participating institutes

2 NIH institutes and offices take applications under PAR-25-273. Contact the program officer at the institute that fits your research before applying.

  • ORIP
  • none

Related notices

  1. Jan 28, 2026 · NOT-OD-26-029

    NIH Removing AIDS Application Due Dates from NOFOs. See Notice NOT-OD-26-029.

  2. Mar 31, 2025 · NOT-OD-24-084

    This funding opportunity was updated to align with agency priorities. Carefully reread the full funding opportunity and make any needed adjustments to your application prior to submission.April 4, 2024 - Overview of Grant Application and Review Changes for Due Dates on or after January 25,…

  3. Aug 31, 2022 · NOT-OD-22-198

    Implementation Changes for Genomic Data Sharing Plans Included with Applications Due on or after January 25, 2023. See Notice NOT-OD-22-198.

  4. Aug 5, 2022 · NOT-OD-22-189

    Implementation Details for the NIH Data Management and Sharing Policy. See Notice NOT-OD-22-189.

Award terms

Application types allowed
NewResubmission The OER Glossary and the How to Apply Application Guide provide details on these application types. Only those application types listed here are allowed for this NOFO.
Award budget
Application budgets need to reflect the actual needs of the proposed project. No more than 200,000 direct costs may be requested in any single year. The combined budget may not exceed 275,000 direct costs for the two-year project period.
Project period
The total project period may not exceed 2 years. NIH grants policies as described in the NIH Grants Policy Statement will apply to the applications submitted and awards made from this NOFO.
Funds available and number of awards
The number of awards is contingent upon NIH appropriations and the submission of a sufficient number of meritorious applications.

Summarized from the NOFO text; the full NOFO governs eligibility, budget, and review.

Related NOFOs

  • Reissue of PAR-21-167.

Other open NOFOs for R21

Browse all open NIH NOFOs

About this page

GotGrant gathers the NOFO, its participation and change notices, and its NOSIs from the NIH Guide for Grants and Contracts, and counts funded projects from NIH RePORTER by the opportunity number each award was made under. Data refreshed October 16, 2026; the NIH Guide is the authoritative source. See our data methodology.

Find who wins under this NOFO

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