Ono Pharma Announces Oral Presentation of New Data from the Phase 2 Clinical Study of ONO-4578 (EP4 antagonist) in Certain Gastric Cancers at the ASCO 2026 Annual Meeting

OSAKA, Japan--(BUSINESS WIRE)--Ono Pharmaceutical Co., Ltd. (Headquarters: Osaka, Japan; President and COO: Toichi Takino; “Ono”) today announced the results of the phase 2 clinical study (ONO-4578-08 study) of the EP4 antagonist ONO-4578 in patients with previously untreated, HER2-negative unresectable advanced or recurrent gastric cancer (including gastroesophageal junction cancer). The results were presented at the American Society of Clinical Oncology (ASCO) 2026 Annual Meeting. In this stu