The Department of Health and Human Services, specifically the National Institutes of Health, is seeking proposals for the NINDS Exploratory Clinical Trials for Small Business (R41/R42 Clinical Trial Required). This solicitation aims to support small business concerns (SBCs) in conducting exploratory clinical trials that contribute to the justification for future trials to establish definitive efficacy. The trials can include Phase 1 and 2 studies of drugs and biologics, feasibility and preliminary efficacy studies of devices, as well as early studies of surgical, behavioral, or rehabilitation therapies. The trials can be single-site or multi-site with up to three clinical sites. The applications must generate data that inform further clinical development of the proposed intervention or diagnostic, and FDA approval is required for FDA-regulated clinical trials. The goal is to advance products/technologies that require federal regulatory approval or bring complex research tools to market. The funding opportunity is open until September 6, 2026. For more information and to apply, visit the solicitation agency URL: link.