The intent of the FY24 ERP LRA is to leverage ongoing or completed research studies for which PTE was not an original focus and to provide support to expand the research to develop such a focus and increase our understanding of PTE. The project may include basic, translational, and/or clinical research studies. The study must be associated with an ongoing or completed research effort in which PTE is/was not a research priority and for which addition of cohorts, outcomes, assessments, or analysis specific to PTE would be scientifically justified to increase our understanding of PTE. Examples of allowable research include but are not limited to: Secondary analysis of epilepsy surveillance data to evaluate PTE risk; Addition of a chronic TBI cohort in an ongoing preclinical animal study to evaluate seizure outcomes and epileptogenesis; Recruitment/Analysis of a PTE cohort within an ongoing observational longitudinal study for a known concomitant comorbidity of PTE such as depression, cognitive deficits, sleep disorder, etc.