Social disconnection and Suicide Risk in Late Life (R01 Clinical Trial Optional) | PAR 25 067

Opportunity Information: Apply for PAR 25 067

The National Institutes of Health is soliciting R01 grant applications under the funding opportunity titled "Social disconnection and Suicide Risk in Late Life (R01 Clinical Trial Optional)" (PAR-25-067). The focus is on understanding and reducing suicide risk among older adults by studying how social disconnection contributes to suicidal thoughts and behaviors in late life. In this context, social disconnection is defined broadly to include both objective social isolation (such as limited social contact, small networks, or infrequent engagement with others) and perceived social isolation, commonly described as loneliness. The opportunity is meant to support research that does more than document correlations, pushing instead toward clearer causal explanations and actionable prevention strategies.

A central emphasis is on identifying the mechanisms that link isolation and loneliness to suicide risk in older populations. NIH is specifically interested in research that examines neurobiological pathways (for example, stress-related systems, inflammation, brain circuitry involved in threat processing and reward, sleep and circadian disruption, or other biologically grounded processes) as well as environmental mechanisms (such as bereavement, caregiving burden, financial strain, housing instability, reduced mobility, barriers to transportation, or community-level factors) that may amplify risk. Projects that clarify how these mechanisms operate in late life, why some older adults are more vulnerable than others, and how risk escalates from distress to suicidal ideation or behavior fit well within the intent of the announcement.

Another priority is the use of an experimental therapeutics approach. In practical terms, this means applicants are encouraged to move beyond broad or loosely defined interventions and instead identify specific, measurable targets that sit between social disconnection and suicide risk, then develop and test interventions that engage those targets. The expectation is that studies will be designed to show whether an intervention meaningfully changes the hypothesized mechanism (the target) and whether that change translates into reduced suicidal thoughts, behaviors, or related clinically significant outcomes. Because the announcement is "Clinical Trial Optional," applicants can propose either clinical trials or non-trial research designs, as long as the work is rigorous and aligned with the scientific goals.

The opportunity also highlights service delivery innovation as a major area of interest. This includes developing entirely new models or adapting existing models to strengthen social connection for older adults in ways that are scalable and realistic in community or healthcare settings. Examples could include integrating social connection interventions into primary care, emergency departments, aging services networks, home-based care, or faith- and community-based programs; improving referral pathways; using technology thoughtfully to reduce isolation without increasing burden; or designing approaches that reach older adults who face mobility, sensory, geographic, or stigma-related barriers. The overarching aim is prevention: strengthening social ties and reducing loneliness in ways that can lower suicide risk in late life.

Eligibility for this discretionary NIH grant is broad and includes many types of organizations and governmental units. Eligible applicants listed include 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; tribal organizations that are not federally recognized governments; public housing authorities and Indian housing authorities; nonprofit organizations with or without 501(c)(3) status (excluding institutions of higher education where specified); for-profit organizations (other than small businesses); and small businesses, along with other eligible entities. The notice also explicitly calls out additional eligible applicant categories such as Alaska Native and Native Hawaiian Serving Institutions, Asian American Native American Pacific Islander Serving Institutions (AANAPISIs), Historically Black Colleges and Universities (HBCUs), Hispanic-serving Institutions, Tribally Controlled Colleges and Universities (TCCUs), faith-based or community-based organizations, eligible federal agencies, regional organizations, U.S. territories or possessions, and even non-U.S. entities (foreign organizations). This breadth signals an intent to encourage diverse, community-relevant research capacity and partnerships, including those that can reach underserved or disproportionately affected older adult populations.

Administratively, this is an R01 mechanism, meaning it supports substantial, investigator-initiated research projects with a scope typically suited to multi-year, hypothesis-driven work. The funding activity category is health, with CFDA number 93.242. The opportunity was created on November 18, 2024, and the original closing date is September 7, 2026. While the listing does not provide an award ceiling or expected number of awards in the source data provided, the overall message is clear: NIH is prioritizing late-life suicide prevention research that directly addresses social disconnection, clarifies underlying mechanisms, tests targeted interventions when appropriate, and improves real-world models for enhancing social connection in older adults.

• The National Institutes of Health in the health sector is offering a public funding opportunity titled "Social disconnection and Suicide Risk in Late Life (R01 Clinical Trial Optional)" and is now available to receive applicants.
• Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 93.242.
• This funding opportunity was created on 2024-11-18.
• Applicants must submit their applications by 2026-09-07. (Agency may still review applications by suitable applicants for the remaining/unused allocated funding in 2026.)
• 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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