Accessibility StatementSkip Navigation Late-breaking HERIZON-GEA-01 presentation highlights the expanding clinical profile of Ziihera across HER2-driven gastrointestinal cancers Jazz to host investor webcast on Friday, January 9, 2026, to review data For U.S. media and investors only DUBLIN, Dec. 2, 2025 /PRNewswire/ -- Jazz Pharmaceuticals plc (Nasdaq: JAZZ) today announced two abstracts featuring key data for Ziihera (zanidatamab-hrii) have been accepted for presentation at the American Society of Cli ...

Core Insights - Zymeworks Inc. stock is experiencing a significant surge following the announcement of positive topline results from the Phase 3 HERIZON-GEA-01 trial for Ziihera in combination with chemotherapy [1][7] Group 1: Trial Results - The Phase 3 trial evaluated Ziihera (zanidatamab-hrii) as a first-line treatment for HER2-positive locally advanced or metastatic gastroesophageal adenocarcinoma, showing statistically significant improvements in progression-free survival (PFS) compared to the control arm [2] - Ziihera plus Tevimbra and chemotherapy demonstrated clinically meaningful and statistically significant improvements in overall survival (OS) [3] - A strong trend toward statistical significance in OS was observed for Ziihera plus chemotherapy compared to the control arm, with an additional OS interim analysis planned for mid-2026 [4] Group 2: Efficacy and Subgroup Analysis - Benefits in PFS and OS were noted in both PD-L1-positive and PD-L1-negative subgroups for the Ziihera plus Tevimbra and chemotherapy arm versus the control arm [5] - Improvements in key secondary endpoints, including objective response rate (ORR) and duration of response (DoR), were supportive of the primary efficacy endpoints [5] Group 3: Future Plans and Regulatory Actions - Jazz Pharmaceuticals plans to present the trial data at a major medical meeting in Q1 2026 and aims for publication in a peer-reviewed journal, along with rapid adoption in the National Comprehensive Cancer Network Guidelines [6] - A supplemental Biologics License Application is expected to be submitted in the first half of 2026 to support Ziihera as a first-line treatment for HER2+ locally advanced or metastatic GEA [6] Group 4: Market Reaction - Following the announcement, Zymeworks stock rose by 36.20% to $25.23, while Jazz Pharmaceuticals and BeOne Medicines also saw significant stock price increases of 20.45% and 3.37%, respectively [7]

Core Insights - Jazz Pharmaceuticals announced positive top-line results from the Phase 3 HERIZON-GEA-01 trial, showing that Ziihera (zanidatamab-hrii) in combination with chemotherapy significantly improves progression-free survival (PFS) compared to trastuzumab and chemotherapy [1][4] - The trial also indicated a strong trend toward statistical significance for overall survival (OS) at the first interim analysis, with plans to submit a supplemental Biologics License Application (sBLA) in the first half of 2026 [1][2] Trial Results - Ziihera plus chemotherapy and Ziihera plus tislelizumab (PD-1 inhibitor) demonstrated statistically significant improvements in both OS and PFS compared to the control arm [1][4] - The trial involved 914 patients across over 300 sites in more than 30 countries, focusing on HER2-positive locally advanced or metastatic gastroesophageal adenocarcinoma (GEA) [6][7] Future Plans - The company plans to present these findings at a major medical meeting in Q1 2026 and submit for publication in a peer-reviewed journal [3] - Jazz Pharmaceuticals aims to engage with the FDA quickly to support Ziihera as a first-line treatment for HER2+ locally advanced or metastatic GEA [2][3] Safety Profile - The safety profile of Ziihera in combination with chemotherapy was consistent with known safety profiles, with no new safety signals observed [2][4] - The trial's ongoing nature includes additional planned OS interim analyses expected in mid-2026 [4] Broader Research Context - HERIZON-GEA-01 is the first Phase 3 trial for Ziihera, with ongoing research including trials for biliary tract cancer and metastatic breast cancer [5][9] - Ziihera is a bispecific HER2-directed antibody that has shown potential in treating various solid tumors expressing HER2 [8][9]

Core Insights - Zymeworks Inc. announced positive topline results from the Phase 3 HERIZON-GEA-01 trial for Ziihera (zanidatamab-hrii) in combination with chemotherapy for HER2-positive gastroesophageal adenocarcinoma, indicating a significant advancement in treatment options for this patient population [1][5][6] Trial Results - Ziihera plus chemotherapy showed a clinically meaningful and statistically significant improvement in progression-free survival (PFS) compared to trastuzumab and chemotherapy [6][7] - Ziihera plus Tevimbra (tislelizumab) and chemotherapy demonstrated statistically significant improvements in overall survival (OS) and PFS versus the control arm [6][7] - The trial results support Ziihera's potential as the preferred HER2-targeted agent in first-line gastroesophageal adenocarcinoma [6][7] Safety Profile - The safety profile of Ziihera in combination with chemotherapy, with or without Tevimbra, was consistent with known safety profiles, with no new safety signals observed [3] Future Plans - Jazz Pharmaceuticals plans to submit the trial data for presentation at a major medical meeting in Q1 2026 and for publication in a peer-reviewed journal [4] - A supplemental Biologics License Application is expected to be submitted in the first half of 2026 to support Ziihera as a first-line treatment [5][6] Regulatory Designations - Zanidatamab has received Breakthrough Therapy designation and Fast Track designations from the FDA for various indications, including first-line gastroesophageal adenocarcinoma [9] Commercial Strategy - Zymeworks is eligible for additional regulatory and commercial milestones, as well as tiered royalties on net sales of Ziihera from Jazz and BeOne [8] - The company is advancing a robust pipeline of product candidates and leveraging strategic partnerships to enhance its market position [10]

Core Insights - Summit Therapeutics Inc. reported progress on its lead drug candidate, ivonescimab, and its third-quarter financial results, with stock trading lower [1][7] Clinical Trial Results - The Phase 3 HARMONi-6 trial demonstrated that ivonescimab combined with chemotherapy reduced the risk of progression or death by 40% compared to BeOne Medicines' Tevimbra and chemotherapy for advanced squamous non-small cell lung cancer (NSCLC) [2] - The ivonescimab regimen extended the median time without tumor progression to 11.1 months, an increase of 4.2 months over the Tevimbra-based therapy [2] - The overall response rate (ORR) for ivonescimab plus chemotherapy was 75.9%, compared to 66.5% for tislelizumab plus chemotherapy, with a duration of response (DoR) of 11.20 months versus 8.38 months [3] Future Plans - Based on the HARMONi-6 results, the company plans to submit a Biologics License Application (BLA) for ivonescimab plus chemotherapy in Q4 2025 [4] - Summit is currently enrolling patients in the HARMONi-3 Phase 3 study to compare ivonescimab with Merck's Keytruda for first-line metastatic NSCLC, with expected completion of enrollment in the squamous cohort by H1 2026 [5] - A new Phase 3 HARMONi-GI3 study has been initiated for first-line unresectable metastatic colorectal cancer (CRC), with plans for further expansion of the ivonescimab clinical development program [6] Financial Position - As of September 30, 2025, the company reported cash and cash equivalents of $238.6 million [6]

Company Overview - BeOne Medicines Ltd. - Sponsored ADR (ONC) shares increased by 4% to $290.35 in the last trading session, with a notable trading volume that exceeded the average [1] - The stock has experienced a 10.4% gain over the past four weeks, indicating positive momentum [1] Sales Growth Potential - The recent stock price rally is driven by investor optimism regarding the sales growth potential of the company's oncology products, including Brukinsa (zanubrutinib) and Tevimbra (tislelizumab) [2] - BeOne Medicines is also developing several other pipeline candidates aimed at treating various cancer indications [2] Earnings and Revenue Expectations - The company is projected to report quarterly earnings of $0.19 per share, reflecting a year-over-year increase of 116.5% [3] - Expected revenues for the upcoming quarter are $1.23 billion, which represents a 32.7% increase compared to the same quarter last year [3] Earnings Estimate Revisions - The consensus EPS estimate for BeOne Medicines has been revised down by 60.7% over the last 30 days [4] - A negative trend in earnings estimate revisions typically does not lead to price appreciation, suggesting caution for future stock performance [4] Industry Context - BeOne Medicines is part of the Zacks Medical - Drugs industry, which includes other companies like Metagenomi (MGX) [5] - Metagenomi's stock closed 1.4% higher at $2.13, with a notable return of 41.9% over the past month [5] - Metagenomi's consensus EPS estimate has remained unchanged at -$0.68, representing a year-over-year change of -134.5% [6]