Grants / Department of Health and Human Services / National Institutes of Health

PAR-25-153: Assay development and screening for discovery of chemical probes, drugs or immunomodulators (R01 Clinical Trial Not Allowed)

Closed Closed September 7, 2026 Opportunity PAR-25-153 ☆ Save

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.

• Award amountsNot given on Grants.gov
• Cost sharingNot required
• Funding typeGrant

Key dates

Who can apply

This opportunity was open to nonprofits, colleges and universities, state and local governments, tribes, small businesses and businesses.

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.

More grants for nonprofits, colleges and universities, state and local governments, tribes, small businesses, businesses.

Is this a realistic fit?

• Most of the program's money (57% over five years) went to colleges and universities.
• No cost sharing or match is required.

What the grant funds

Through this Notice of Funding Opportunity (NOFO), the National Cancer Institute (NCI) solicits applications for identification of small molecules that function to elucidate the biology of disease as chemical probes or function as agonists or antagonists of disease target(s) for therapy or immunotherapy. The NOFO is intended to support discovery research for the identification of validated hits relevant to health-related outcomes of participating NIH Institutes. Stages of discovery research covered by this NOFO include: 1) assay development for specific biological targets and disease mechanisms relevant to the mission of participating NIH Institutes with the intent to screen for small molecule compounds that show potential as probes for use in advancing knowledge about the known targets, identifying new targets, or as pre-therapeutic leads; 2) screen implementation high throughput target-focused approaches or moderate throughput phenotypic- and fragment-based approaches to identify initial screening hits; 3) hit validation, including implementation of secondary assays that are orthogonal to the primary assay, advanced cheminformatics analysis and initial medicinal chemistry inspection to prioritize the hit set, and follow-up assays to characterize mode and mechanism of action of the validated hits; 4) hit-to-lead optimization, including SAR to optimize target engagement, selectivity and to minimize chemical liabilities, ADME, PK and PD studies, and, if appropriate, in vivo modeling to test efficacy or biological effects.

Category: Education, Health.

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.

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