Jazz Pharmaceuticals PLC

JAZZ: XNAS (USA)

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Jazz: Ziihera's Strong Data and Approval in HER2-Positive Gastroesophageal Cancer Improves Outlook

Rachel Elfman

Aug 31, 2026

Jazz received US approval of Ziihera as a first-line treatment of all HER2-positive advanced gastroesophageal adenocarcinoma, or GEA, used in addition to chemotherapy, with or without Tevimbra. Additional phase 3 data further reinforced its survival advantage over Herceptin with longer follow-up.

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Jazz Pharmaceuticals PLC

Jazz: Ziihera's Strong Data and Approval in HER2-Positive Gastroesophageal Cancer Improves Outlook

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