Biotech Duo Skyrockets On 'Sweeping Success' In Cancer Treatment

Biotech Duo Skyrockets On 'Sweeping Success' In Cancer Treatment

Shares of Jazz Pharmaceuticals and Zymeworks catapulted Monday after the duo unveiled positive test results for a gastric cancer drug.

Zymeworks Announces Positive HERIZON-GEA-01 Phase 3 Results Supporting Ziihera® (zanidatamab-hrii) as HER2-Targeted Agent-of-Choice and New Standard of Care in First-Line HER2-Positive Locally Advanced or Metastatic Gastroesophageal Adenocarcinoma

VANCOUVER, British Columbia, Nov. 17, 2025 (GLOBE NEWSWIRE) -- Zymeworks Inc. (Nasdaq: ZYME) a clinical-stage biotechnology company developing a diverse pipeline of novel, multifunctional biotherapeutics to improve the standard of care for difficult-to-treat diseases, including cancer, inflammation, and autoimmune disease, today announced positive topline results from the Phase 3 HERIZON-GEA-01 trial evaluating Ziihera® (zanidatamab-hrii) in com…

Zymeworks Announces Positive HERIZON-GEA-01 Phase 3 Results Supporting Ziihera® (zanidatamab-hrii) as HER2-Targeted Agent-of-Choice and New Standard of Care in First-Line HER2-Positive Locally Advanced or Metastatic Gastroesophageal Adenocarcinoma

Ziihera® plus chemotherapy showed a clinically meaningful and statistically significant improvement in PFS versus trastuzumab and chemotherapy, and a...

Zymeworks (ZYME) Soars on Positive Phase 3 Ziihera Data in Gastric Cancer – What Today’s Breakthrough Means for the Stock and Patients

What Zymeworks Announced Today Before the U.S. market open on November 17, 2025, Vancouver‑based Zymeworks Inc. (ZYME) released topline Phase 3 data from its pivotal HERIZON‑GEA‑01 study, evaluating Ziihera (zanidatamab‑hrii) in first‑line treatment of HER2‑positive locally advanced or metastatic gastroesophageal adenocarcinoma, a group that includes cancers of the stomach, gastroesophageal junction, and esophagus. GlobeNewswire+1 The trial comp…