The National Institutes of Health (NIH) is offering a funding opportunity titled "Enhancing Mechanistic Research on Precision Probiotic Therapies (R61/R33 Clinical Trial Optional)" aimed at supporting innovative mechanistic research to develop precision probiotic interventions. This initiative seeks to identify person-specific biological features that influence probiotic responses, thereby enhancing clinical outcomes and addressing the variability in individual responses to probiotics. The funding, which can reach a maximum of $350,000 annually over a combined duration of up to five years, is open to a diverse range of applicants, including educational institutions and nonprofit organizations, while excluding foreign entities. Interested applicants must submit their proposals by June 2, 2027, and can direct inquiries to grantsinfo@nih.gov for further information.