Social disconnection and Suicide Risk in Late Life (R21 Clinical Trial Optional) | RFA MH 22 136

Opportunity Information: Apply for RFA MH 22 136

The National Institutes of Health (NIH) announced a discretionary grant opportunity titled "Social disconnection and Suicide Risk in Late Life (R21 Clinical Trial Optional)" (Funding Opportunity Number RFA-MH-22-136). It is designed to support early-stage, exploratory research on how social disconnection contributes to suicide risk among older adults. In this context, social disconnection is defined broadly to include both objective social isolation (for example, small social networks, infrequent contact, living alone, limited community participation) and perceived social isolation, commonly described as loneliness. The central goal is to generate actionable knowledge about why and how these social conditions elevate the risk for suicidal thoughts and behaviors in late life, and to use that knowledge to shape practical prevention strategies.

A major emphasis of the opportunity is on identifying mechanisms that connect social isolation and loneliness to suicidal outcomes in older adults. Applicants are encouraged to examine neurobiological pathways (such as stress physiology, inflammatory processes, neural circuitry related to threat, reward, and social pain, sleep and circadian disruption, cognitive and affective changes, or other brain-based markers) as well as environmental and contextual drivers (including bereavement, caregiving strain, retirement-related transitions, disability and mobility limitations, chronic illness, socioeconomic stress, neighborhood and housing factors, and barriers to accessing supportive services). The intent is not only to document that isolation and loneliness are associated with suicide risk, but to clarify the specific pathways through which they translate into suicidal thinking, increased capability for self-harm, or progression to suicidal behavior in later life.

The funding opportunity also highlights an experimental therapeutics approach, meaning studies should aim to identify specific, measurable targets and then develop or refine interventions that engage those targets in a way that can be tested. This could include pilot work to determine whether an intervention changes a hypothesized mechanism (for instance, reducing loneliness-related distress reactivity, improving social reward responsiveness, strengthening perceived belonging, or reducing thwarted connectedness), and whether those changes plausibly reduce suicidal ideation or related proximal outcomes. Because the announcement is "clinical trial optional," applicants may propose projects that include clinical trials as well as projects that do not, depending on what best fits the research question. This flexibility supports a range of projects, from mechanistic and measurement-focused studies to early intervention development and testing.

Another key focus is on service delivery: developing new models or modifying existing systems to better create and sustain social connection for older adults in ways that can prevent suicide. This can include community-based approaches, healthcare-embedded models, partnerships between aging services and mental health providers, and strategies tailored to real-world constraints such as transportation issues, digital access gaps, stigma, workforce shortages, and fragmented care. The emphasis on service delivery recognizes that even strong interventions may fail to reduce suicide risk if they cannot be delivered consistently, equitably, and at scale in the settings where older adults live and receive care.

From an administrative standpoint, this is an NIH grant using the R21 mechanism, which typically supports exploratory and developmental research intended to produce preliminary data, establish feasibility, or open new lines of investigation rather than fund large definitive trials. The listed award ceiling is $275,000, and the original closing date was October 15, 2022. The opportunity falls under the health funding activity category and is associated with CFDA numbers 93.242 and 93.866. The sponsoring agency is NIH, and the program is framed around suicide prevention in late life through the lens of social connection as both a risk and protective factor.

Eligibility is broad and includes many types of organizations that can contribute to aging, mental health, neuroscience, public health, and service delivery research. Eligible applicants include state, county, and local 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; Native American tribal organizations not federally recognized; public housing authorities and Indian housing authorities; nonprofits with and without 501(c)(3) status (excluding higher education institutions under those categories); for-profit organizations other than small businesses; small businesses; and other applicants. The opportunity also explicitly highlights additional eligible entities such as Alaska Native and Native Hawaiian Serving Institutions; Asian American, Native American, and Pacific Islander Serving Institutions (AANAPISIs); Hispanic-serving Institutions; Historically Black Colleges and Universities (HBCUs); Tribally Controlled Colleges and Universities (TCCUs); faith-based or community-based organizations; eligible federal agencies; regional organizations; U.S. territories or possessions; tribal governments other than federally recognized ones; and non-U.S. (foreign) organizations. This wide eligibility aligns with the program's practical focus on social connection, which often depends on community infrastructure, culturally grounded approaches, and cross-sector partnerships.

Overall, the opportunity is aimed at advancing the science of late-life suicide prevention by moving beyond general correlations and toward a clearer understanding of mechanisms and implementable solutions. Projects that are likely to fit well are those that connect social isolation and loneliness to well-defined biological or environmental pathways, test whether changing those pathways reduces near-term suicide risk indicators, and propose delivery models that could realistically improve social connection for older adults in the places they already seek help or support.

• The National Institutes of Health in the health sector is offering a public funding opportunity titled "Social disconnection and Suicide Risk in Late Life (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): 93.242, 93.866.
• This funding opportunity was created on 2021-12-23.
• Applicants must submit their applications by 2022-10-15. (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 $275,000.00 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.

Apply for RFA MH 22 136

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