Mechanistic Basis of Diffuse White Matter Disease in Vascular Contributions to Cognitive Impairment and Dementia (VCID)(R01 Clinical Trial Not Allowed) | RFA NS 19 039

Opportunity Information: Apply for RFA NS 19 039

The NIH funding opportunity "Mechanistic Basis of Diffuse White Matter Disease in Vascular Contributions to Cognitive Impairment and Dementia (VCID) (R01 Clinical Trial Not Allowed)" (Funding Opportunity Number RFA-NS-19-039) supports fundamental, non-clinical-trial research aimed at explaining why diffuse white matter disease develops, how it progresses, and how it disrupts brain function in ways that contribute to cognitive impairment and dementia in aging. This program focuses on the biology underlying a very common set of brain changes seen in older adults, where white matter injury is frequently linked with cerebrovascular disease and is strongly associated with VCID in both men and women. The overall intent is to move beyond descriptive imaging findings and toward a clearer mechanistic understanding that can eventually guide strategies to reduce the public health burden of vascular-related cognitive decline.

The opportunity highlights that "diffuse white matter disease" is not a single uniform lesion but a collection of related pathologies that can include demyelination, axonal or fiber loss, and damage driven by multifocal small infarcts and chronic local ischemia. It is often seen alongside arteriosclerosis in small deep penetrating arteries and may co-occur with multiple infarcts in areas such as the basal ganglia, brainstem, or cerebellum. While these abnormalities frequently appear around the ventricles (periventricular white matter), they can also be present in subcortical white matter, suggesting that different white matter regions may have distinct vulnerabilities and disease trajectories. Clinically, the condition is commonly detected as white matter hyperintensities on MRI or as signal loss on CT, and it can also be confirmed and characterized through histological examination in human brain tissue and in animal models.

A central theme of the FOA is that, despite how often diffuse white matter disease is observed and how tightly it is connected to cerebrovascular disease and cognitive outcomes, major knowledge gaps remain. The NIH explicitly calls out unresolved questions about cellular and molecular causes, why certain regions are more vulnerable than others, and how the disease evolves over time. Another key gap is functional: the physiological consequences for local axons and broader neural circuits are described as almost completely unknown. In other words, the program is not only about identifying what the lesions look like, but also about uncovering how vascular-related white matter injury alters communication within the brain in ways that could plausibly produce cognitive symptoms.

Projects responsive to this FOA are expected to investigate mechanisms across multiple levels of analysis, including molecular, cellular, tissue, and circuit-level biology. The emphasis is on mechanistic work that can clarify etiology and progression in age-related cerebrovascular and white matter disease, using appropriate experimental approaches such as pathology-based studies, imaging-linked biology, and translationally relevant animal or other model systems, as long as the work remains within the "clinical trial not allowed" boundary. The long-term goal is foundational knowledge that can inform future prevention or intervention efforts, even if the funded studies themselves are not testing treatments in human trial formats.

Administratively, this is a discretionary NIH grant using the R01 mechanism within the health funding activity category, associated with CFDA numbers 93.853 and 93.866. The original closing date listed for the opportunity was 2019-08-14, and it is described as a reissue of earlier announcements (RFA-NS-16-021 and PAR-18-413), signaling an ongoing NIH interest in building a coherent research base around white matter mechanisms in VCID. Eligible applicants are broad and include many types of U.S. governmental units (state, county, city/township, special districts), independent school districts, public and private institutions of higher education, and a range of nonprofit and for-profit organizations (including small businesses). The FOA also explicitly encourages participation from a wide variety of institutions and communities, including Alaska Native and Native Hawaiian Serving Institutions, AANAPISIs, Hispanic-serving institutions, HBCUs, tribally controlled colleges and universities, tribal governments and organizations (including those other than federally recognized in the "other eligible applicants" listing), faith-based and community-based organizations, U.S. territories or possessions, and even non-U.S. (foreign) entities and regional organizations, reflecting an intent to draw on diverse expertise and populations relevant to vascular brain aging.

• The National Institutes of Health in the health sector is offering a public funding opportunity titled "Mechanistic Basis of Diffuse White Matter Disease in Vascular Contributions to Cognitive Impairment and Dementia (VCID)(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): 93.853, 93.866.
• This funding opportunity was created on 2019-06-14.
• Applicants must submit their applications by 2019-08-14. (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 NS 19 039

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