This Notice of Funding Opportunity Announcement (NOFO) intends to supports studies that are both necessary and sufficient to inform the planning of a Phase II-IV clinical trial within NHLBI's mission. The NHLBI expects that applications to this NOFO will describe the planned clinical trial and in so doing demonstrate that the proposed (R34) research is scientifically necessary to design or plan the subsequent trial. Furthermore, this NOFO will support research projects that are designed to provide results that will be sufficient to inform the future trial without further studies. The planned Phase II, III, or IV trial must be primarily intended to test the efficacy, safety, clinical management, or implementation of intervention(s) in the prevention and/or treatment of heart, lung, blood, and sleep disorders. In contrast to the study start up or preparation phase of NHLBI funding opportunities for clinical trials (as described at https://www.nhlbi.nih.gov/grants-and-training/funding-opportunities-and-contacts/clinical-trials-optimization), the R34 mechanism is intended to provide new information that answers a scientific or operational question(s) which may be pragmatic in nature and, therefore, informs the final development of a Phase II-IV clinical trial. Regardless of the results of the R34, support of the proposed future clinical trial will require a new application.
NHLBI Clinical Trial Pilot Studies (R34 Clinical Trial Optional)
National Institutes of Health lists this opportunity for nonprofit applicant type listed. Review the coded eligibility, award range, source synopsis, and official notice before deciding whether to apply.
Deadline
March 16, 2027
146 days remaining
Award range
—
official range may be incomplete
Applicant signal
Nonprofit applicant type listed
the official notice controls eligibility
- 00 — State governments
- 01 — County governments
- 02 — City or township governments
- 04 — Special district governments
- 05 — Independent school districts
- 06 — Public and state-controlled institutions of higher education
- 07 — Federally recognized Native American tribal governments
- 08 — Public housing authorities and Indian housing authorities
- 11 — Native American tribal organizations other than federally recognized tribal governments
- 12 — 501(c)(3) nonprofits other than institutions of higher education
- 13 — Nonprofits without 501(c)(3) status other than institutions of higher education
- 20 — Private institutions of higher education
- 22 — For-profit organizations other than small businesses
- 23 — Small businesses
- 25 — Other applicants; see the official eligibility clarification
These are high-level Grants.gov codes. Additional eligibility text, geographic restrictions, and program-specific rules in the official notice can narrow them.
- Confirm entity eligibility in the full Notice of Funding Opportunity.
- Check SAM.gov and Grants.gov registration requirements and timing.
- Read every attachment for matching, cost-share, geography, and award conditions.
- Verify the exact deadline time and any agency-specific submission portal.
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Source: Grants.gov daily XML extract, 2026-10-21 extract. This page reproduces selected public listing fields for research convenience. The official Notice of Funding Opportunity and agency instructions control. This product uses the Grants.gov API but is not endorsed or certified by the U.S. Department of Health and Human Services.