MacroGenics Announces Development Milestone Achieved in Retifanlimab (MGA012) Collaboration with Incyte

• $15 Million milestone triggered by initiation of Phase 3 clinical trial in NSCLC by Incyte

ROCKVILLE, MD, Sept. 21, 2020 (GLOBE NEWSWIRE) -- MacroGenics, Inc. (Nasdaq: MGNX), a clinical-stage biopharmaceutical company focused on discovering and developing innovative monoclonal antibody-based therapeutics for the treatment of cancer, today announced that a $15 million milestone payment has been triggered under its exclusive global collaboration and license agreement with Incyte for retifanlimab (MGA012), an investigational anti-PD-1 monoclonal antibody designed by MacroGenics and licensed to Incyte (as INCMGA00012). The milestone was triggered by the initiation of the Phase 3 POD1UM-304 clinical trial, evaluating the efficacy and safety of retifanlimab with platinum-based chemotherapy in patients with metastatic squamous and non-squamous non-small cell lung cancer (NSCLC).

MacroGenics and Incyte have each established multiple development programs for retifanlimab, evaluating the anti-PD-1 molecule either as monotherapy or in combination with other agents. Incyte is conducting clinical trials that are potentially registration-enabling for patients with metastatic NSCLC, squamous carcinoma of the anal canal (SCAC), MSI-high endometrial cancer, Merkel cell carcinoma, and MacroGenics is conducting a potentially registration-enabling study in HER2-positive gastric cancer.

“Anti-PD-1 therapy has become a mainstay in cancer treatment across multiple tumor types, and we are excited to see our Incyte partnership continue to advance the development of retifanlimab across a broad set of monotherapy and combination regimens,” said Scott Koenig, M.D., Ph.D., President and CEO of MacroGenics. “We look forward to continued progress on this program over the coming months.”

Under the collaboration agreement with Incyte, MacroGenics is eligible to receive up to a total of $390 million in potential remaining development and regulatory milestones and up to $330 million in potential commercial milestones. If retifanlimab is approved and commercialized, MacroGenics would be eligible to receive royalties, tiered from 15 to 24 percent, on future worldwide net sales of the molecule.

About MacroGenics, Inc.

MacroGenics is a clinical-stage biopharmaceutical company focused on discovering and developing innovative monoclonal antibody-based therapeutics for the treatment of cancer. The Company generates its pipeline of product candidates primarily from its proprietary suite of next-generation antibody-based technology platforms, which have applicability across broad therapeutic domains. For more information, please see the Company's website at www.macrogenics.com. MacroGenics and the MacroGenics logo are trademarks or registered trademarks of MacroGenics, Inc.