Monopar and NorthStar Amend & Extend Collaboration

On June 11, 2024 Monopar Therapeutics Inc. (Nasdaq: MNPR), a clinical-stage radiopharma company, and NorthStar Medical Radioisotopes, LLC, a global innovator in development and commercial production of medical radioisotopes, reported an amendment and expansion to their existing collaboration (Press release, Monopar Therapeutics, JUN 11, 2024, View Source [SID1234644265]). Under terms of the revised collaboration, the Companies entered into a long-term, non-exclusive master supply agreement for NorthStar to provide Monopar with the powerful therapeutic radioisotope actinium-225 (Ac-225). The amendment builds on NorthStar’s significant investment in Ac-225 manufacturing and Monopar’s promising preclinical therapeutic results with Ac-225 in its lead MNPR-101 radiopharma program.

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The amendment also clarifies certain economic terms and those related to jointly developed intellectual property rights for Monopar’s MNPR-101 for radiopharmaceutical use. Monopar has acquired those rights from NorthStar, together with certain broad, jointly developed intellectual property pertaining to MNPR-101, giving Monopar full ownership and title to its lead MNPR-101 radiopharmaceutical platform. Both companies will share ownership of the filed patent application on the use of PCTA as a linker with Ac-225, which has shown superior binding and yield with Ac-225 over the current industry-leading linker, DOTA.

"We are excited about the evolution of our collaboration, the promising potential of the MNPR-101 radiopharma platform, and the long-term access to a high-quality source of Ac-225 that can support our current development programs and potential future commercial products," said Chandler Robinson, MD, Monopar’s Chief Executive Officer.

"Using our proprietary electron accelerator technology, NorthStar is poised to be the first commercial-scale producer of non-carrier added (n.c.a.) Ac-225. We’re delighted to continue and extend our collaboration with Monopar and support development of its exciting MNPR-101 radiopharma platform focused on therapeutic agents to treat aggressive cancers," said Frank Scholz, PhD, NorthStar’s Chief Executive Officer.