Royalty Pharma acquires royalty interest in Alnylam’s AMVUTTRA for $310M

Royalty Pharma (RPRX) announced that it has acquired a royalty interest in Alnylam’s AMVUTTRA from funds managed by Blackstone Life Sciences for $310 million. The royalty interest being sold stems from Blackstone’s 2020 financing collaboration with Alnylam, in which Blackstone invested to support AMVUTTRA’s pivotal Phase 3 HELIOS-B trial. Royalty Pharma has acquired Blackstone’s 1% royalty on worldwide net sales of AMVUTTRA in exchange for an upfront payment of $310 million. The royalty duration for AMVUTTRA will extend through March 2035. The transaction is expected to deliver returns consistent with Royalty Pharma’s stated targets for approved products under a range of scenarios that factor in significant potential competition from Alnylam’s follow-on product, nucresiran. The transaction with Royalty Pharma is for AMVUTTRA sales beginning on October 1, 2025 and excludes the fixed payments paid to Blackstone as part of the original transaction in which Blackstone invested $70 million.