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Data / Federal grants / PAR-25-211

Enhancing Mechanistic Research on Precision Probiotic Therapies (R61/R33 Clinical Trial Optional)

National Institutes of Health (Department of Health and Human Services) is accepting applications until June 2, 2027.

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Key facts

Opportunity number
PAR-25-211
Status
Posted, open
Posted
October 31, 2024
Closes
June 2, 2027
Cost sharing
Not required
Funding instrument
Grant
Category
Education, Health
Assistance listing
93.121 Oral Diseases and Disorders Research; 93.213 Research and Training in Complementary and Integrative Health; 93.313 NIH Office of Research on Women's Health; 93.393 Cancer Cause and Prevention Research; 93.866 Aging Research; None None
Contact
National Institutes of Health · [email protected] · 301-402-2541

Who can apply

  • Public and State controlled institutions of higher education
  • Nonprofits having a 501(c)(3) status with the IRS, other than institutions of higher education
  • Private institutions of higher education
  • City or township governments
  • Nonprofits that do not have a 501(c)(3) status with the IRS, other than institutions of higher education
  • For profit organizations other than small businesses
  • County governments
  • Native American tribal organizations (other than Federally recognized tribal governments)
  • Independent school districts
  • Small businesses
  • Others (see text field entitled "Additional Information on Eligibility" for clarification)
  • State governments
  • Special district governments
  • Native American tribal governments (Federally recognized)
  • Public housing authorities/Indian housing authorities

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; Non-domestic (non-U.S.) Entities (Foreign Organizations) are not eligible to apply. Non-domestic (non-U.S.) components of U.S. Organizations are not eligible to apply. Foreign components, as defined in the NIH Grants Policy Statement, are allowed.

What the agency says

The purpose of this notice of funding opportunity (NOFO) is to support highly innovative mechanistic research to accelerate precision probiotic interventions using a milestone-driven, biphasic award mechanism, R61/R33 Phased Innovation Award. Specifically, this NOFO solicits applications that will characterize person-specific features affecting probiotic responses to identify subgroups of probiotic responders and to enhance probiotic clinical outcomes. The ultimate goal of this NOFO is to identify, understand, and develop strategies to address barriers in precision probiotic therapies to account for the heterogenicity in humans that causes inconsistent probiotic responses. The first phase, funded by the R61, will providing for up to 2 years to identify unique host biological patterns (e.g., native microbiome, immune system, gender, diet, age, genetic background, lifestyle, and health history) that are correlated with heterogeneity of probiotic clinical effects using observational or secondary data analysis studies. The second phase, funded under the R33, will support studies to assess the ability of the unique patterns determined in the R61 phase to detect the improvement of probiotic responsiveness in rigorously designed mechanistic studies in relevant animal models or in human subjects. The combined R61/R33 should not exceed 5 years. Transition from the R61 to the R33 phase of the award will be administratively reviewed and will be determined based on successful completion of Transition Milestones that need to be clearly specified in the R61 phase application. Support for a single phased award that does not need the R61 Exploratory phase is available in the companion (R33) NOFO, PAR-AT-24-XXX (TEMP-25413).

The notice on Grants.gov Full announcement

Other open grants from the Department of Health and Human Services

All grants open to Public colleges and universities · All grants open to Nonprofits (501(c)(3)) · All grants open to Private colleges and universities · Everything closing in June 2027

Read from the Grants.gov API, last updated 2026-10-23. The agency's notice on Grants.gov is the official record; check it before you apply.