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The Federal Interagency Traumatic Brain Injury Research Informatics System (FITBIR) is a U.S. federal interagency platform for traumatic brain injury (TBI) research. It provides resources for defining, submitting, accessing, and visualizing TBI-related research data, including data dictionaries, common data elements for TBI, chronic TBI-related neurodegeneration, preclinical and trauma research, and tools for accessing biospecimens from affiliated biorepositories. As of the snapshot, the system announced it would limit publicly hosted data to NIH-funded studies starting August 24, 2026, and would no longer accept new data submissions for most studies.