The Food and Drug Administration (FDA) is offering a funding opportunity (RFA-FD-24-011) for research focused on the synthesis and biological activity assessment of different diastereomers in the FDA-approved siRNA drug LEQVIO (Inclisiran). The primary objective of this cooperative agreement is to systematically evaluate the diastereomeric composition of LEQVIO, including the synthesis of each diastereomer in stereochemically pure form and the assessment of their biological activity in inhibiting PCSK9 using in vitro assays and animal models. This research is significant as it aims to enhance the understanding of siRNA drugs, contribute to the development of generic siRNAs, and ensure quality control of oligonucleotide drugs. The total funding available for this opportunity is $300,000, with applications due by March 31, 2024. Interested applicants can reach out to Terrin Brown at terrin.brown@fda.hhs.gov for further information.