Opportunity Information: Apply for PAR 24 298

The NIH funding opportunity titled "Mechanism for Time-Sensitive Substance Use Research (R21 Clinical Trial Optional)" (PAR-24-298) is designed to support fast-moving, short-term pilot, feasibility, or exploratory studies that have to happen quickly in order to be scientifically useful. The central idea is that certain substance use problems, policy shifts, service system changes, or public safety developments can unfold so rapidly that a traditional grant timeline would miss the window to collect critical data. Because of that, applicants need to make a strong case that the question they want to answer is genuinely time-sensitive and that rapid review and funding are necessary to capture information that will soon be unavailable or substantially altered by events such as imminent policy implementation or sudden changes in drug supply and harms.

The NOFO focuses on substance use epidemiology and health services research, and it highlights five priority areas where urgent research opportunities often arise. First, it supports studies responding to sudden and severe emerging drug issues, such as an abrupt spike in overdoses or a rapid increase in use of a specific substance like opioids or synthetic cannabinoids within a particular community. Second, it supports research on emerging marijuana trends, especially as marijuana laws and regulations continue to shift across jurisdictions and create new, time-bound natural experiments. Third, it invites proposals addressing unexpected and time-sensitive prescription drug misuse research opportunities, for example when a state, county, or local government launches a new initiative, implements a new rule, or changes monitoring and prescribing practices in a way that creates a short-lived chance to evaluate impact. Fourth, it supports studies tied to unexpected and time-sensitive medical system issues, including opportunities to understand how addiction prevention, treatment, harm reduction, and recovery services are delivered as the health care system evolves (such as changes in coverage, care delivery models, or integration of services). Fifth, it includes time-sensitive criminal or juvenile justice-related opportunities, particularly when new system-level or structural changes affect drug use patterns, access to evidence-based care, diversion programs, reentry services, or the availability of health care services for justice-involved populations.

This award uses the NIH R21 mechanism, which generally aligns with early-stage, exploratory work intended to generate foundational evidence, test methods, or establish feasibility rather than to fund large, multi-year definitive trials. The listing notes "Clinical Trial Optional," meaning clinical trials are not required, but may be proposed if they are appropriate for the rapid, exploratory aims and fit NIH requirements. The opportunity falls under the NIH assistance listing CFDA number 93.279, and it is categorized as a discretionary grant within education and health-related funding activities. The posted original closing date is 2027-09-09.

Eligibility is broad and includes many types of U.S.-based organizations and government entities. Eligible applicants include state, county, city or township governments; 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; tribal organizations other than federally recognized tribal governments; public housing authorities and Indian housing authorities; nonprofit organizations both with and without 501(c)(3) status (as long as they are not institutions of higher education in the categories specified); for-profit organizations other than small businesses; and small businesses. The NOFO also explicitly calls out additional eligible applicant types such as Historically Black Colleges and Universities (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 (AANAPISISs), as well as faith-based or community-based organizations, eligible federal agencies, regional organizations, and U.S. territories or possessions. At the same time, it clearly restricts non-U.S. participation: non-domestic (non-U.S.) entities are not eligible to apply, non-domestic components of U.S. organizations are not eligible, and foreign components as defined by the NIH Grants Policy Statement are not allowed.

In practical terms, the program is aimed at applicants who can move quickly, leverage real-time or near-real-time data sources, and execute a focused study during a narrow window when conditions are changing. Competitive proposals will typically define a specific urgent event or impending change, explain why waiting for standard review would undermine the research, and describe an efficient, feasible plan to collect and analyze data in time to inform public health response, service delivery decisions, or policy implementation related to substance use and associated health outcomes.

  • The National Institutes of Health in the education, health sector is offering a public funding opportunity titled "Mechanism for Time-Sensitive Substance Use Research (R21 Clinical Trial Optional)" and is now available to receive applicants.
  • Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 93.279.
  • This funding opportunity was created on 2024-09-20.
  • Applicants must submit their applications by 2027-09-09.
  • 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.
Apply for PAR 24 298

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FAQs: NIH Mechanism for Time-Sensitive Substance Use Research (R21 Clinical Trial Optional) (PAR-24-298)

What is this funding opportunity?

This is an NIH funding opportunity titled "Mechanism for Time-Sensitive Substance Use Research (R21 Clinical Trial Optional)" (PAR-24-298). It supports fast-moving, short-term pilot, feasibility, or exploratory studies in substance use epidemiology and health services research when the research must happen quickly to remain scientifically useful.

What is the main purpose of this NOFO?

The purpose is to fund research that is truly time-sensitive, meaning there is a narrow window to collect critical data before it becomes unavailable or substantially changed by real-world events (for example, imminent policy implementation or sudden changes in drug supply and related harms). The NOFO emphasizes that applicants must justify why rapid review and funding are necessary.

What kinds of projects are a good fit?

Projects that are a good fit are short-term, rapid, and focused studies such as pilot studies, feasibility assessments, or exploratory analyses that can capture data during a quickly changing situation. The intent is typically to generate foundational evidence, test methods, or establish feasibility rather than to support large, multi-year definitive research.

What does "time-sensitive" mean in the context of this opportunity?

"Time-sensitive" means the research question depends on conditions that are changing quickly, and the opportunity to collect meaningful data may be missed under a traditional grant timeline. Applicants are expected to make a strong case that the timing is critical and that waiting would undermine the ability to answer the question.

What events or circumstances can make a study time-sensitive?

The opportunity highlights situations such as imminent policy implementation, sudden changes in drug supply, rapid shifts in harms (including overdoses), unexpected service system changes, or public safety developments that could alter the environment in a way that makes later data collection less informative.

What research areas does this opportunity focus on?

The NOFO focuses on substance use epidemiology and health services research, especially studies that can inform public health responses, service delivery decisions, or policy implementation related to substance use and associated health outcomes.

What are the priority areas mentioned in the NOFO?

The NOFO highlights five priority areas where urgent research opportunities often arise: (1) sudden and severe emerging drug issues; (2) emerging marijuana trends amid shifting laws and regulations; (3) unexpected and time-sensitive prescription drug misuse opportunities; (4) unexpected and time-sensitive medical system issues affecting addiction-related services; and (5) time-sensitive criminal or juvenile justice-related opportunities tied to system-level or structural changes.

What is meant by "sudden and severe emerging drug issues"?

This refers to situations like an abrupt spike in overdoses or a rapid increase in use of a specific substance (such as opioids or synthetic cannabinoids) within a particular community, where timely data collection can help clarify what is happening and inform response efforts.

How does the NOFO address marijuana-related research?

It supports research on emerging marijuana trends, particularly because marijuana laws and regulations continue to change across jurisdictions. These shifts can create time-bound natural experiments where the ability to assess impacts depends on collecting data during a specific period.

What prescription drug misuse opportunities does the NOFO describe?

The NOFO points to unexpected and time-sensitive opportunities that arise when a state, county, or local government launches a new initiative, implements a new rule, or changes monitoring and prescribing practices. These changes can create a short-lived chance to evaluate impact.

What "medical system issues" are in scope?

In scope are unexpected and time-sensitive opportunities to study how addiction prevention, treatment, harm reduction, and recovery services are delivered as the health care system evolves, including changes in coverage, care delivery models, or integration of services.

What criminal or juvenile justice-related research fits this NOFO?

The NOFO includes time-sensitive opportunities linked to criminal or juvenile justice settings, particularly when new system-level or structural changes affect drug use patterns, access to evidence-based care, diversion programs, reentry services, or health care availability for justice-involved populations.

What funding mechanism is used?

This opportunity uses the NIH R21 mechanism, which generally supports exploratory and developmental research. It is typically aligned with early-stage work intended to generate foundational evidence, test methods, or establish feasibility.

Does this opportunity require a clinical trial?

No. The opportunity is labeled "Clinical Trial Optional," meaning a clinical trial is not required. However, a clinical trial may be proposed if it is appropriate for the rapid, exploratory aims and fits NIH requirements.

Is this meant for long-term, large-scale studies?

Based on the description, the emphasis is on short-term, rapid pilot/feasibility/exploratory work rather than large, multi-year definitive trials. The intent is to act quickly within a narrow window when conditions are changing.

What is the assistance listing (CFDA) number for this opportunity?

The assistance listing (CFDA) number provided is 93.279.

How is this grant categorized?

It is categorized as a discretionary grant within education and health-related funding activities.

What is the posted original closing date?

The posted original closing date is 2027-09-09.

Who is eligible to apply?

Eligibility is broad and includes many U.S.-based organizations and government entities, including state, county, city or township governments; 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; tribal organizations other than federally recognized tribal governments; public housing authorities and Indian housing authorities; nonprofit organizations with or without 501(c)(3) status (with the noted caveat in the NOFO language); for-profit organizations other than small businesses; and small businesses.

Are specific institution types explicitly mentioned as eligible?

Yes. The NOFO explicitly calls out additional eligible applicant types such as Historically Black Colleges and Universities (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 (AANAPISISs).

Are faith-based or community-based organizations eligible?

Yes. The eligibility list explicitly includes faith-based or community-based organizations.

Are U.S. territories or possessions eligible?

Yes. The NOFO includes U.S. territories or possessions among eligible applicant types.

Can federal agencies apply?

Yes. The NOFO indicates eligible federal agencies are included among eligible applicant types.

Are non-U.S. (foreign) organizations eligible to apply?

No. Non-domestic (non-U.S.) entities are not eligible to apply.

Can a U.S. organization include a non-U.S. component?

No. Non-domestic components of U.S. organizations are not eligible.

Are foreign components allowed under NIH definitions?

No. The NOFO states that foreign components, as defined by the NIH Grants Policy Statement, are not allowed.

What makes an application competitive for this program?

Competitive proposals typically (1) define a specific urgent event or impending change, (2) explain why standard review timelines would undermine the research, and (3) present an efficient and feasible plan to collect and analyze data in time to inform public health response, service delivery decisions, or policy implementation related to substance use and associated outcomes.

What types of data collection approaches are implied as useful?

The description emphasizes applicants who can move quickly and leverage real-time or near-real-time data sources, consistent with the need to capture information during a narrow window when conditions are changing.

Why does NIH offer a time-sensitive mechanism for substance use research?

Because substance use problems, policy shifts, service system changes, and public safety developments can unfold rapidly. In those cases, traditional grant timelines can miss the window to collect critical data, reducing the scientific and practical value of the research.

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