MacroGenics and I-Mab Announce Exclusive Collaboration and License Agreement to Develop and Commercialize Enoblituzumab in Greater China

MacroGenics, Inc. and I-Mab Biopharma (I-Mab) announced that the companies have entered into an exclusive collaboration and license agreement to develop and commercialize enoblituzumab. This investigational drug is an immune-optimized, anti-B7-H3 monoclonal antibody that incorporates MacroGenics’ proprietary Fc Optimization technology platform. Enoblituzumab represents one of the most advanced programs in development directed against B7-H3, a target for which no agent is currently approved. I-Mab obtains regional development and commercialization rights in mainland China, Hong Kong, Macau and Taiwan.

As part of the collaboration, I-Mab will both lead regional studies in its territories as well as participate in global studies conducted by MacroGenics. MacroGenics intends to initiate a Phase 2 study of enoblituzumab in combination with MGA012 (also known as INCMGA0012), an investigational anti-PD-1 antibody that MacroGenics licensed to Incyte Corporation, in first-line patients with head and neck cancer later this year.

“We are very pleased to be partnering with I-Mab to further accelerate and broaden the development of enoblituzumab and to support our mission of bringing innovative medicines to patients with high unmet medical needs,” said Scott Koenig, M.D., Ph.D., President and Chief Executive Officer of MacroGenics. “We believe that I-Mab is an ideal partner given its track record of rapidly progressing innovative immuno-oncology programs and its ability to tap into the growing pharmaceutical market in this region.”

“MacroGenics is recognized as a leader in the development of therapeutics targeting B7-H3 and we are committed to accelerating the development of enoblituzumab, a promising investigational drug which may represent a new treatment paradigm in immuno-oncology,” said Jingwu Zang, M.D., Ph.D., Chief Executive Officer of I-Mab. “We believe that this program is an exciting addition to our innovative pipeline of clinical stage oncology assets.”

MacroGenics expects to receive an upfront payment of $15 million in connection with the collaboration. MacroGenics will also be eligible to receive additional development and regulatory milestone payments of up to $135 million. In addition, I-Mab will pay tiered double-digit royalties (ranging from mid teens to twenty percent) based on annual net sales in its territories.