Enhancing Mechanistic Research on Precision Probiotic Therapies (R33 Clinical Trial Optional)
OpenNational Institutes of Health · Opportunity number PAR-25-210
Eligibility
Nonprofits are listed as eligible applicants.
- Special district governments
- Small businesses
- Private institutions of higher education
- Nonprofits that do not have a 501(c)(3) status with the IRS, other than institutions of higher education
- Public and state controlled institutions of higher education
- City or township governments
- Native American tribal organizations (other than Federally recognized tribal governments)
- Public housing authorities/Indian housing authorities
- County governments
- Nonprofits having a 501(c)(3) status with the IRS, other than institutions of higher education
- State governments
- Others (see text field entitled "Additional Information on Eligibility" for clarification)
- Native American tribal governments (Federally recognized)
- For profit organizations other than small businesses
- Independent school districts
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.
Description
The purpose of this notice of funding opportunity (NOFO) is to support highly innovative mechanistic research to accelerate precision probiotic interventions. Specifically, this NOFO solicits R33 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. This NOFO will support studies to assess the ability of the unique patterns of host biology (e.g., native microbiome, immune system, gender, diet, age, genetic background, lifestyle, and health history) that are correlated with probiotic usage to detect the improvement of probiotic responsiveness. Well-suited applications must offer rigorously designed mechanistic studies using relevant/innovative animal models or in human subjects. This NOFO is intended to support projects where potential host biological patterns that are correlated with probiotic usage have been identified, as demonstrated with supportive preliminary data, but require further mechanistic studies to test for their causality or predictability. Applicants pursuing early-stage research to identify host biological patterns that may affect probiotic health outcomes should consider the companion (R61/R33) NOFO PAR-AT-24-XXX (TEMP-25412).
Funding
| Total program funding | Not listed |
|---|---|
| Award floor | Not listed |
| Award ceiling | Not listed |
| Category | Education, Health |
| Assistance listing | 93.121, 93.213, 93.313, 93.393, 93.866, |
Official sources
Last verified on Grants.gov Nov 4, 2026. Grantvello is not affiliated with Grants.gov or National Institutes of Health. The notice on Grants.gov is the binding text.