Opportunity Information: Apply for RFA HD 24 004
The National Institutes of Health (NIH) funding opportunity titled "Opportunities for Advancing Limb Regeneration Research (R01 Clinical Trial Not Allowed)" (RFA-HD-24-004) is designed to push forward transformative basic research aimed at understanding and enabling limb regeneration. The emphasis is on studies that use animal models to uncover how the body naturally controls growth, patterning, and tissue rebuilding, and how those internal regulatory networks might be safely and effectively manipulated to promote regeneration in vertebrates. A central scientific motivation behind the announcement is that many vertebrates, especially mammals, have limited innate ability to regenerate complex limb structures. This FOA seeks projects that can clarify what is missing or constrained in those systems and identify strategies that could unlock more robust regenerative responses.
The FOA is explicitly basic-research focused and is not intended to support clinical trials. In practical terms, applicants are expected to propose mechanistic, discovery-driven work rather than human interventional studies. The goal is to generate foundational knowledge about the molecular, cellular, developmental, and systems-level processes that govern limb regrowth, with an eye toward translating that knowledge into future therapeutic directions. The long-term vision is to improve outcomes for people with developmental limb deficiencies and to address challenges associated with limb injury and amputation. Importantly, the FOA frames impact in both near-term and long-term horizons, meaning projects may range from identifying key pathways and cell populations to establishing enabling tools, models, and experimental approaches that lay the groundwork for later translational advances.
This opportunity uses the NIH R01 mechanism, indicating support for substantial, hypothesis-driven research programs that can deliver significant advances in understanding. The award ceiling listed is $499,999, and the original application closing date was 2023-07-27 (as provided in the source data). The opportunity is categorized under Health, Income Security and Social Services and is associated with CFDA number 93.865.
Eligibility is broad across U.S.-based organizations and includes state, county, city/township, and special district governments; independent school districts; public and state-controlled institutions of higher education; private institutions of higher education; federally recognized Native American tribal governments; and Native American tribal organizations other than federally recognized tribal governments. It also includes public housing authorities/Indian housing authorities, nonprofits with or without 501(c)(3) status (other than institutions of higher education), for-profit organizations other than small businesses, small businesses, and other eligible entities. The FOA also highlights additional eligible applicant types such as Alaska Native and Native Hawaiian Serving Institutions, Asian American Native American Pacific Islander Serving Institutions (AANAPISI), Hispanic-serving Institutions, Historically Black Colleges and Universities (HBCUs), Tribally Controlled Colleges and Universities (TCCUs), faith-based or community-based organizations, regional organizations, eligible federal agencies, Indian/Native American Tribal Governments other than federally recognized, and U.S. territories or possessions.
At the same time, there are clear limitations related to foreign involvement. Non-domestic (non-U.S.) entities and non-domestic (non-U.S.) institutions are not eligible to apply, and non-domestic components of U.S. organizations are also not eligible to apply. However, foreign components, as defined in the NIH Grants Policy Statement, are allowed, which typically means a U.S. applicant organization may include certain defined foreign collaborations or activities when appropriately justified and compliant with NIH policy.
Overall, the FOA is aimed at accelerating the field of limb regeneration by funding rigorous, imaginative animal-model research that explains how regenerative capacity is controlled and how it might be enhanced, including in mammalian contexts where regeneration is usually limited. The expected payoff is a stronger scientific foundation for eventual strategies that could help prevent, repair, or functionally restore limbs affected by congenital differences, trauma, or amputation.Apply for RFA HD 24 004
- The National Institutes of Health in the health, income security and social services sector is offering a public funding opportunity titled "Opportunities for Advancing Limb Regeneration Research (R01 Clinical Trial Not Allowed)" and is now available to receive applicants.
- Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 93.865.
- This funding opportunity was created on 2022-11-28.
- Applicants must submit their applications by 2023-07-27. (Agency may still review applications by suitable applicants for the remaining/unused allocated funding in 2026.)
- Each selected applicant is eligible to receive up to $499,999.00 in funding.
- Eligible applicants include: State governments, County governments, City or township governments, Special district governments, Independent school districts, Public and State controlled institutions of higher education, Native American tribal governments (Federally recognized), Public housing authorities/Indian housing authorities, Native American tribal organizations (other than Federally recognized tribal governments), Nonprofits having a 501 (c) (3) status with the IRS, other than institutions of higher education, Nonprofits that do not have a 501 (c) (3) status with the IRS, other than institutions of higher education, Private institutions of higher education, For-profit organizations other than small businesses, Small businesses, Others.
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Frequently Asked Questions (FAQs)
What is the name of this NIH funding opportunity?
The funding opportunity is titled "Opportunities for Advancing Limb Regeneration Research (R01 Clinical Trial Not Allowed)" with funding opportunity number RFA-HD-24-004.
What is the overall purpose of this FOA?
This FOA supports transformative basic research aimed at understanding and enabling limb regeneration. It emphasizes discovering how the body controls growth, patterning, and tissue rebuilding, and how those internal regulatory networks could be manipulated to promote regeneration in vertebrates.
Is this opportunity focused on basic research or clinical research?
It is explicitly basic-research focused. The FOA emphasizes mechanistic, discovery-driven studies rather than human interventional work.
Are clinical trials allowed under this FOA?
No. The FOA is designated "Clinical Trial Not Allowed" and is not intended to support clinical trials.
What types of studies does NIH want to fund through this FOA?
The FOA prioritizes studies using animal models to uncover how regeneration is naturally regulated and what limits regeneration in many vertebrates, especially mammals. Projects are expected to generate foundational knowledge about molecular, cellular, developmental, and systems-level processes involved in limb regrowth.
Why is there a special emphasis on animal models?
The scientific motivation described in the FOA is that many vertebrates, particularly mammals, have limited innate ability to regenerate complex limbs. Animal-model research is emphasized to clarify what is constrained or missing in those systems and to identify strategies that might unlock stronger regenerative responses.
What is the long-term vision or intended impact of the research?
The long-term vision is to build a stronger scientific foundation that could eventually improve outcomes for people with developmental limb deficiencies and address challenges related to limb injury and amputation. The FOA frames impact across near-term and long-term horizons, from identifying pathways and cell populations to establishing tools and approaches that enable future translational advances.
What NIH grant mechanism is used for this opportunity?
This opportunity uses the NIH R01 mechanism, which generally supports substantial, hypothesis-driven research programs intended to make significant advances in understanding.
What is the maximum award amount listed for this FOA?
The award ceiling listed is $499,999.
What was the application closing date provided in the source information?
The original application closing date provided is 2023-07-27.
What subject area or category is this opportunity associated with?
The opportunity is categorized under Health, Income Security and Social Services.
What CFDA number is associated with this funding opportunity?
The associated CFDA number is 93.865.
Which U.S.-based government entities are eligible to apply?
Eligibility includes a wide range of U.S.-based government entities, including state governments, county governments, city/township governments, and special district governments.
Are institutions of higher education eligible?
Yes. Eligible applicants include public and state-controlled institutions of higher education and private institutions of higher education, as well as independent school districts.
Are tribal entities eligible to apply?
Yes. Eligibility includes federally recognized Native American tribal governments and Native American tribal organizations other than federally recognized tribal governments. The FOA also highlights eligibility for Indian/Native American Tribal Governments other than federally recognized.
Can nonprofits apply?
Yes. Eligible applicants include nonprofits with or without 501(c)(3) status (other than institutions of higher education).
Can for-profit organizations apply?
Yes. Eligibility includes for-profit organizations other than small businesses as well as small businesses.
Are public housing authorities eligible?
Yes. Eligibility includes public housing authorities/Indian housing authorities.
Are faith-based or community-based organizations eligible?
Yes. The FOA highlights faith-based or community-based organizations as eligible applicant types.
Are minority-serving institutions specifically mentioned as eligible?
Yes. The FOA highlights several minority-serving institution types as eligible, including HBCUs, Hispanic-serving Institutions, Tribally Controlled Colleges and Universities (TCCUs), Alaska Native and Native Hawaiian Serving Institutions, and Asian American Native American Pacific Islander Serving Institutions (AANAPISI).
Are U.S. territories or possessions eligible?
Yes. The FOA includes U.S. territories or possessions as eligible applicant types.
Are non-U.S. (foreign) organizations eligible to apply directly?
No. Non-domestic (non-U.S.) entities and non-domestic (non-U.S.) institutions are not eligible to apply under this FOA.
Can a U.S. organization apply if the work will be conducted at a non-U.S. component of that organization?
No. The FOA states that non-domestic components of U.S. organizations are not eligible to apply.
Are any foreign collaborations or activities allowed at all?
Yes. The FOA indicates that foreign components (as defined in the NIH Grants Policy Statement) are allowed, meaning a U.S. applicant may include certain defined foreign collaborations or activities when properly justified and compliant with NIH policy.
Does the FOA aim to improve regeneration specifically in mammals?
The FOA highlights that many vertebrates, especially mammals, have limited innate limb regeneration. A key goal is to understand what constrains regeneration in those systems and identify strategies that could unlock more robust responses, including in mammalian contexts.
What kinds of outcomes or deliverables are implied by "near-term" versus "long-term" impact?
Based on the FOA description, near-term outcomes may include identifying key pathways, regulatory networks, or cell populations involved in limb regrowth, while long-term outcomes include enabling tools, models, and approaches that lay the groundwork for later translational and therapeutic directions.
Is this FOA intended to directly fund therapies for patients right now?
No. It is oriented toward foundational, mechanistic research intended to inform future therapeutic directions rather than supporting immediate human interventional testing.
What is the central scientific challenge this FOA is trying to address?
The FOA is motivated by the fact that complex limb regeneration is limited in many vertebrates, particularly mammals. It seeks to clarify what is missing or constrained in those organisms and to identify safe, effective ways internal regulatory networks might be manipulated to promote regeneration.
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