The National Institutes of Health (NIH) is offering a funding opportunity for exploratory and developmental research on Guillain Barre Syndrome (GBS) and Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) through the R21 grant mechanism (Funding Opportunity Number: RFA-NS-25-025). The initiative aims to enhance understanding of the immunological mechanisms, genetic factors, and potential treatment strategies for these autoimmune neuropathies, with a focus on innovative research that could lead to significant advancements in diagnosis and treatment. Approximately $3 million is available to support up to seven research projects, each with a budget of up to $275,000 over a two-year period. Applications are due by October 4, 2025, and interested parties can reach out to NIH Grants Information at grantsinfo@nih.gov for further inquiries.