Sarepta and BioMarin have executed a license agreement that provides Sarepta Therapeutics with global exclusive rights to BioMarin’s Duchenne muscular dystrophy patent estate for EXONDYS 51 and all future exon-skipping products. BioMarin retains the right to convert the license to a co-exclusive right in the event it decides to proceed with an exon-skipping therapy for Duchenne. In addition, Sarepta and BioMarin executed a settlement agreement, resolving the ongoing worldwide patent proceedings related to the use of EXONDYS 51 and all future exon-skipping products for the treatment of Duchenne.

Under the terms of the license and settlement agreements, Sarepta will make a one-time payment of $35 million to BioMarin and certain additional regulatory and commercial milestone payments for exons 51, 45, 53 and possibly on future exon-skipping products.

In addition, Sarepta will pay royalties to BioMarin as follows:

  • Exon-skipping compounds 51, 45, and 53 and possibly on future exon-skipping products: Sarepta will pay BioMarin 5 percent of net sales through the end of 2023 in the United States; and
  • Exon-skipping compounds 51, 45, and 53 and possibly on future exon-skipping products: Sarepta will pay BioMarin 8 percent of net sales through September 30, 2024 in the European Union and in other countries where certain BioMarin / AZL patents exist.

Upon their effectiveness, these global license and settlement agreements provide Sarepta worldwide freedom to operate for EXONDYS 51 and our future exon-skipping products,” said Douglas Ingram, Sarepta’s President and Chief Executive Officer. “The resolution of these legal matters provides us with more certainty to fully focus our resources and energy on our crucial mission of developing innovative medicines to improve the lives of those impacted by DMD around the world."

We are pleased to reach a global settlement and license agreement with Sarepta that fairly recognizes the important innovation by the Leiden University Medical Center and allows patients certainty that this issue will not create a barrier to access,” said G. Eric Davis, BioMarin’s Executive Vice President and General Counsel.

About EXONDYS 51

EXONDYS 51 uses Sarepta’s proprietary phosphorodiamidate morpholino oligomer (PMO) chemistry and exon-skipping technology to skip exon 51 of the dystrophin gene. EXONDYS 51 is designed to bind to exon 51 of dystrophin pre-mRNA, resulting in exclusion of this exon during mRNA processing in patients with genetic mutations that are amenable to exon 51 skipping. Exon skipping is intended to allow for production of an internally truncated dystrophin protein. Data from clinical studies of EXONDYS 51 in a small number of DMD patients have demonstrated a consistent safety and tolerability profile. The pivotal trials were not designed to evaluate long-term safety and a clinical benefit of EXONDYS 51 has not been established.

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