Elucidation of mechanisms underlying complex morbidities of SUD and other mental Illnesses in people living with HIV/AIDS (R01 Clinical Trial Optional) | RFA DA 21 012

Opportunity Information: Apply for RFA DA 21 012

The NIH funding opportunity RFA-DA-21-012, titled "Elucidation of mechanisms underlying complex morbidities of SUD and other mental illnesses in people living with HIV/AIDS (R01 Clinical Trial Optional)," supports research aimed at explaining why substance use disorders (SUD) and other psychiatric conditions so often cluster together in people living with HIV (PLWHIV). The central goal is to move beyond simply documenting that these conditions co-occur and instead identify the neurobehavioral mechanisms that drive these complex, overlapping morbidities. In practice, this means encouraging studies that can clarify how brain function, behavior, and mental health processes interact with HIV-related factors to worsen risk, symptoms, and functional outcomes, and to do so in ways that can eventually inform better prevention and treatment strategies.

This opportunity uses the R01 grant mechanism, which typically funds substantial, multi-year, hypothesis-driven research projects. It is labeled "Clinical Trial Optional," meaning applicants may propose either clinical trial research or non-trial studies, depending on what is most appropriate for the mechanistic questions being pursued. The emphasis is on mechanism-focused work, particularly neurobehavioral pathways, which can include cognitive, affective, motivational, reward, stress, and self-regulation processes that link HIV, substance use, and co-occurring psychiatric disorders. The intent is to support studies that can disentangle causal and maintaining factors behind multimorbidity, rather than treating each diagnosis as separate or only describing correlations.

The sponsoring agency is the National Institutes of Health (NIH), and the program sits within the health-related federal assistance domain (CFDA 93.279). The activity category is listed under Education and Health, reflecting NIH's broader mission to fund research that advances knowledge and improves health outcomes. The opportunity is a discretionary grant, meaning awards are made through a competitive review process based on scientific merit and program priorities. The posting indicates an original closing date of January 6, 2021, with a creation date of October 16, 2020, which situates the announcement as a time-limited solicitation released for a specific receipt window.

A wide range of organizations are eligible to apply, which signals an intent to draw in diverse research settings and partnerships, including those with strong ties to populations disproportionately affected by HIV, SUD, and mental illness. 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; and public housing authorities/Indian housing authorities. Nonprofit organizations are eligible whether they do or do not hold 501(c)(3) status, as are for-profit organizations (other than small businesses) and small businesses. Federally recognized Native American tribal governments and other Native American tribal organizations (including those other than federally recognized tribal governments) are also eligible. The announcement additionally highlights a broad set of other eligible applicants, including Alaska Native and Native Hawaiian Serving Institutions, Asian American Native American 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, regional organizations, U.S. territories or possessions, eligible federal agencies, and even non-domestic (non-U.S.) entities (foreign organizations). This breadth is important because it encourages proposals that can reach varied communities, leverage specialized clinical cohorts, and incorporate culturally informed approaches and community-engaged research infrastructures.

Overall, the opportunity is focused on generating rigorous, mechanism-oriented evidence about how SUD and psychiatric disorders interact with HIV in the real world, particularly through neurobehavioral pathways. By prioritizing an understanding of underlying mechanisms in PLWHIV experiencing multimorbidity, the funding call is designed to support work that can ultimately improve clinical approaches, reduce compounded morbidity, and guide more targeted interventions for people facing the intersecting challenges of HIV, substance use, and mental illness.

• The National Institutes of Health in the education, health sector is offering a public funding opportunity titled "Elucidation of mechanisms underlying complex morbidities of SUD and other mental Illnesses in people living with HIV/AIDS (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): 93.279.
• This funding opportunity was created on 2020-10-16.
• Applicants must submit their applications by 2021-01-06. (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.

Apply for RFA DA 21 012

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