Closed · RFA-AG-26-014 · CFDA 93.866 · Discretionary
Aging Mammalian Tissues In Vitro (R21 Clinical Trial Not Allowed)
Federal grant opportunity posted by National Institutes of Health, cataloged on Grants.gov.
- Varies
- Award range
- Closed
- Status
- December 9, 2025
- Close date
- -
- Expected awards
The verdict
Aging Mammalian Tissues In Vitro (R21 Clinical Trial Not Allowed) is a closed discretionary listing from National Institutes of Health that offered Varies by applicant. Future funding cycles may be published under the same CFDA number.
- Varies
- award range
- Closed
- application status
- 93.866
- CFDA program
Opportunity snapshot. This Grants.gov announcement - Aging Mammalian Tissues In Vitro (R21 Clinical Trial Not Allowed) - is cataloged under number RFA-AG-26-014 and tied to CFDA assistance listing 93.866, posted by National Institutes of Health. Grants.gov currently shows the opportunity as closed, first posted on August 26, 2025 and last updated on December 8, 2025. The funding category is Discretionary, delivered as a grant.
Award economics. The award range on file is Varies by applicant. Cost sharing is not required, so applicants do not need to commit matching funds to be competitive on this opportunity. Federal award ranges are often upper bounds; actual allocations reflect program appropriations, the strength of the applicant pool, and the evaluation committee's scoring.
Deadline and action path. This opportunity closed on December 9, 2025. Future funding cycles may be published under the same CFDA number, so monitoring the parent program page is the most reliable way to catch re-announcements. Every Grants.gov submission requires an active SAM.gov registration and a Unique Entity ID. Review the Eligibility section below carefully, federal eligibility categories (nonprofit, state or local government, tribal, individual, educational institution, small business) have distinct registration and reporting requirements. Pre-application outreach to the listed agency contact is permitted and often welcomed, it helps clarify scope and scoring priorities. Before acting on the deadline or award figures above, verify them directly on the official Grants.gov listing, amendments can change dates and amounts after this page was last refreshed.
Award Range
Varies by applicant
Close Date
December 9, 2025
Posted
August 26, 2025
Instrument
Grant
Description
This notice of funding opportunity (NOFO) invites applications that propose interdisciplinary research that aims to develop complex mammalian 3-dimensional (3D)in vitromicrophysiological systems (MPS) to model aging and recapitulate aging processes/phenotypes observed in the whole organismin vivo. This NOFO is primarily focused on human cell-derived MPS (e.g., tissue chip, organ-on-chip, tissue organoids). However, systems developed using cells of nonhuman mammalian origin are acceptable for benchmarking, system validation, or when their relevance to understanding human aging biology is justified. Supported projects will be expected to advance the adoption of MPS in aging biology research and as new human-relevant tools for drug discovery.This NOFO uses the R21 activity code, which is intended for exploratory research at the early and conceptual stages of project development. Preliminary data are not required. An essential feature of responsive applications is the adoption of a multidisciplinary approach that includes expertise in aging biology and from disciplines such as stem cell biology, tissue and organ physiology, microfluidics, bioengineering, computational biology, pharmacology, and biostatistics.
Eligibility
Grants.gov lists this opportunity under eligibility category codes 00, 01, 02, 04, 05, 06, 07, 08, 11, 12, 13, 20, 22, 23, 25. These codes correspond to applicant types (state/local government, tribal organization, nonprofit, educational institution, individual, small business, etc.) defined in Grants.gov's own eligibility reference. See the current Grants.gov eligibility categories or check the official listing below for this opportunity's exact eligibility statement.
Official Listing on Grants.gov
View full details, application forms, and submission instructions.
Agency Contact
NIH Grants Information grantsinfo@nih.gov
Key Dates
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Disclaimer: This information is sourced from Grants.gov and SAM.gov and is for informational purposes only. Opportunity details, deadlines, and eligibility requirements change frequently. Always verify current information directly on Grants.gov before applying. PlainGrants is not affiliated with any federal agency.
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| Sources | the SAM.gov Assistance Listings and Grants.gov |