On July 14, 2025 Alligator Bioscience (Nasdaq Stockholm: ATORX) reported on the announcement by Shanghai Henlius Biotech, Inc. that it has dosed the first patient in the United States in its global Phase 3 clinical trial (NCT06532006) of HLX22 in combination with trastuzumab and chemotherapy as a first-line treatment for HER2-positive metastatic gastric and gastroesophageal junction (GEJ) cancer (Press release, Alligator Bioscience, JUL 14, 2025, View Source [SID1234654365]).

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HLX22 is an anti-HER2 monoclonal antibody being developed by Henlius under a license from AbClon, Inc., following a discovery collaboration which grants Alligator the right to participate in potential future revenues.

"We are encouraged to see Henlius dose the first patient in the United States in the Phase 3 trial of HLX22, reflecting continued momentum for this promising program in HER2-positive gastric cancer," commented Søren Bregenholt, CEO of Alligator Bioscience. "While Alligator is not directly involved in the development, we follow it closely as it represents an opportunity for meaningful revenue streams from milestones and royalties upon the future approval of HLX22."

Under the terms of the agreement, Alligator is entitled to 35% of AbClon’s revenue from its sublicense agreement with Henlius.