Zymeworks' Ziihera Shows Positive Phase 3 Results for HER2+ Cancer Treatment
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Jan 06 2026
0mins
Should l Buy ZYME?
Source: Globenewswire
- Clinical Trial Success: Ziihera demonstrated a median progression-free survival (PFS) of over one year in the HERIZON-GEA-01 trial when combined with chemotherapy, improving by four months compared to the control group, marking its potential as a new standard of care for HER2+ gastroesophageal adenocarcinoma.
- Survival Rate Improvement: The overall survival (OS) median for Ziihera plus chemotherapy was reported at 26.4 months, representing a seven-month increase over trastuzumab plus chemotherapy, highlighting its significant advantage in enhancing patient survival rates.
- Milestone Payment Potential: Zymeworks is eligible for up to $440 million in milestone payments related to regulatory approvals in the U.S., Europe, Japan, and China, which is expected to significantly bolster the company's cash flow and market position.
- Global Regulatory Application Outlook: The positive results from HERIZON-GEA-01 will accelerate Zymeworks' global regulatory submissions in collaboration with Jazz and BeOne, further solidifying Ziihera's market position as the preferred treatment option.
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Analyst Views on ZYME
Wall Street analysts forecast ZYME stock price to rise
14 Analyst Rating
14 Buy
0 Hold
0 Sell
Strong Buy
Current: 23.170
Low
30.00
Averages
35.55
High
42.00
Current: 23.170
Low
30.00
Averages
35.55
High
42.00
About ZYME
Zymeworks Inc. is a global clinical-stage biotechnology company. The Company is developing a diverse pipeline of multifunctional biotherapeutics to improve the standard of care for difficult-to-treat diseases such as cancer, autoimmune and inflammatory diseases (AIID). The Company engineered and developed zanidatamab, a HER2-targeted bispecific antibody using the Company’s Azymetric technology. It has entered into separate agreements with BeiGene, Ltd. and Jazz Pharmaceuticals Ireland Limited, granting each exclusive rights to develop and commercialize zanidatamab in different territories. It is advancing a pipeline of wholly-owned product candidates, leveraging its expertise in both antibody-drug conjugates and multispecific antibody therapeutics targeting novel pathways in areas of significant unmet medical need. The Company has two clinical-stage product candidates: ZW171 and ZW191. Its preclinical product candidates include ZW251, ZW220, ZW209, and ZW1528.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
Zymeworks Announces Q4 and Full Year 2025 Financial Results Release
- Financial Results Announcement: Zymeworks is set to release its Q4 and full year 2025 financial results on March 2, 2026, before market open, which is expected to provide critical financial data and operational updates to help investors assess the company's future growth potential.
- Conference Call Details: Following the financial results announcement, management will host a conference call and webcast at 8:30 AM ET on the same day, aimed at discussing the financial outcomes and corporate strategy in depth, thereby enhancing communication and transparency with investors.
- Pipeline Development: Zymeworks is advancing a diverse pipeline of novel multifunctional biotherapeutics, particularly targeting treatments for cancer and autoimmune diseases, showcasing the company's innovative capabilities and market potential in the biotechnology sector.
- Strategic Partnerships: The company has entered into exclusive agreements with BeOne Medicines and Jazz Pharmaceuticals, granting them rights to develop and commercialize zanidatamab in different territories, further solidifying its position in the global biopharmaceutical market.
See More
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- Dose Optimization Initiated: The company has commenced dose optimization of ZW191 in ovarian cancer in the previous quarter, aiming to enhance efficacy and meet patient needs, thereby strengthening its competitive position in the market.
- Zanidatamab Milestones: Zymeworks is poised to receive substantial milestone payments related to its licensed program Zanidatamab, which is approved in the U.S. for HER2-positive biliary tract cancer, showcasing the company's robust potential in the biopharmaceutical sector.
- Strong Cash Reserves: As of December 31, 2025, Zymeworks held approximately $270.6 million in cash, providing ample funding for future R&D and market expansion, thereby enhancing its capacity for sustained growth in the industry.
See More
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- Executive Promotions: Mark Hollywood promoted to Executive Vice President and Chief Operating Officer, expanding responsibilities to drive growth and operational efficiency in the company's next phase.
- Leadership Transitions: Dr. Sabeen Mekan will transition to Chief Medical Officer effective February 1, 2026, overseeing clinical development and regulatory affairs to ensure compliance and safety in drug development.
- New Vice Presidents: Zymeworks appointed five new Vice Presidents, underscoring the company's commitment to leadership development and enhancing the capabilities and experience of its management team through internal talent cultivation.
See More
Zymeworks Appoints New Directors and Executives to Strengthen Leadership Team
- Board Enhancement: Brian Cherry appointed to the Board on January 12, 2026, brings over $25 billion in investment experience, aiming to leverage his expertise in capital allocation and strategic acquisitions to support effective execution of the company's new strategy and enhance long-term shareholder value.
- Executive Promotions: Mark Hollywood promoted to Executive Vice President and Chief Operating Officer, overseeing technology, manufacturing operations, and quality management, expected to drive growth in the biotechnology sector through expanded responsibilities.
- Leadership Transition: Sabeen Mekan will transition to Chief Medical Officer effective February 1, 2026, responsible for clinical development and regulatory affairs, ensuring compliance and safety in drug development to enhance the company's market competitiveness.
- New Vice Presidents: Five new Vice Presidents appointed, underscoring the company's commitment to leadership development, which will enhance the team's expertise to better achieve strategic objectives and drive long-term growth.
See More
Zymeworks (ZYME) Reports Positive Phase 3 HERIZON-GEA-01 Results for Ziihera with Up to $440M in Milestone Payments
- Phase 3 Trial Results: Zymeworks presented positive results for Ziihera (zanidatamab-hrii) in the HERIZON-GEA-01 trial for HER2-positive gastroesophageal adenocarcinoma at ASCO GI, indicating strong potential as a first-line treatment.
- Milestone Revenue: The company stated that up to $440 million in milestone payments related to regulatory approvals of Ziihera in the U.S., Europe, Japan, and China could significantly enhance its financial position and market competitiveness.
- Cash Flow Outlook: As of December 31, 2025, Zymeworks holds approximately $270.6 million in cash, cash equivalents, and marketable securities, which, combined with anticipated regulatory milestone payments, is expected to provide cash runway beyond 2028.
- R&D Pipeline Progress: The company is conducting a global Phase 1 trial of ZW191 for solid tumors, with dose optimization underway, and further data from this study is expected to be presented at a major medical conference in 2026, bolstering its R&D capabilities.
See More
Zymeworks Reports Positive Phase 3 Results for Ziihera with Up to $440 Million in Potential Milestones
- Clinical Trial Success: Ziihera demonstrated significant improvement in progression-free survival in the HERIZON-GEA-01 Phase 3 trial for HER2-positive gastroesophageal adenocarcinoma, exceeding a four-month increase over the control group, which is expected to drive future regulatory approvals and market sales.
- Potential Revenue Growth: Zymeworks anticipates up to $440 million in regulatory milestone payments, with $250 million from the U.S. market, significantly enhancing the company's financial flexibility and long-term growth potential.
- Share Repurchase Program: The company announced a $125 million share repurchase plan in November 2025, having repurchased approximately $19 million worth of shares, aimed at enhancing shareholder value by reducing the share count while maintaining cash resources for operations and growth investments.
- Strong Financial Foundation: As of December 31, 2025, Zymeworks reported approximately $270.6 million in cash and cash equivalents, combined with anticipated regulatory milestone payments, expected to support operations beyond 2028, ensuring long-term sustainable growth.
See More
Zymeworks Announces Q4 and Full Year 2025 Financial Results Release
- Financial Results Announcement: Zymeworks is set to release its Q4 and full year 2025 financial results on March 2, 2026, before market open, which is expected to provide critical financial data and operational updates to help investors assess the company's future growth potential.
- Conference Call Details: Following the financial results announcement, management will host a conference call and webcast at 8:30 AM ET on the same day, aimed at discussing the financial outcomes and corporate strategy in depth, thereby enhancing communication and transparency with investors.
- Pipeline Development: Zymeworks is advancing a diverse pipeline of novel multifunctional biotherapeutics, particularly targeting treatments for cancer and autoimmune diseases, showcasing the company's innovative capabilities and market potential in the biotechnology sector.
- Strategic Partnerships: The company has entered into exclusive agreements with BeOne Medicines and Jazz Pharmaceuticals, granting them rights to develop and commercialize zanidatamab in different territories, further solidifying its position in the global biopharmaceutical market.
See More
Zymeworks (ZYME) 2026 Milestones Expected to Drive Long-Term Value with Promising ZW191 Data
- ZW191 Clinical Progress: Zymeworks' ZW191 shows a 64% overall response rate in phase 1 trials for advanced solid tumors, particularly among gynecological cancer patients receiving doses of 6.4 mg/kg or higher, indicating significant therapeutic potential that could drive long-term value for the company.
- Dose Optimization Initiated: The company has commenced dose optimization of ZW191 in ovarian cancer in the previous quarter, aiming to enhance efficacy and meet patient needs, thereby strengthening its competitive position in the market.
- Zanidatamab Milestones: Zymeworks is poised to receive substantial milestone payments related to its licensed program Zanidatamab, which is approved in the U.S. for HER2-positive biliary tract cancer, showcasing the company's robust potential in the biopharmaceutical sector.
- Strong Cash Reserves: As of December 31, 2025, Zymeworks held approximately $270.6 million in cash, providing ample funding for future R&D and market expansion, thereby enhancing its capacity for sustained growth in the industry.
See More
Zymeworks Appoints New Board Member and Executive Leadership Changes
- Board Enhancement: Brian Cherry appointed to the Board on January 12, 2026, brings over $25 billion in investment experience, aiming to enhance long-term shareholder value through optimized capital allocation and strategic acquisitions.
- Executive Promotions: Mark Hollywood promoted to Executive Vice President and Chief Operating Officer, expanding responsibilities to drive growth and operational efficiency in the company's next phase.
- Leadership Transitions: Dr. Sabeen Mekan will transition to Chief Medical Officer effective February 1, 2026, overseeing clinical development and regulatory affairs to ensure compliance and safety in drug development.
- New Vice Presidents: Zymeworks appointed five new Vice Presidents, underscoring the company's commitment to leadership development and enhancing the capabilities and experience of its management team through internal talent cultivation.
See More
Zymeworks Appoints New Directors and Executives to Strengthen Leadership Team
- Board Enhancement: Brian Cherry appointed to the Board on January 12, 2026, brings over $25 billion in investment experience, aiming to leverage his expertise in capital allocation and strategic acquisitions to support effective execution of the company's new strategy and enhance long-term shareholder value.
- Executive Promotions: Mark Hollywood promoted to Executive Vice President and Chief Operating Officer, overseeing technology, manufacturing operations, and quality management, expected to drive growth in the biotechnology sector through expanded responsibilities.
- Leadership Transition: Sabeen Mekan will transition to Chief Medical Officer effective February 1, 2026, responsible for clinical development and regulatory affairs, ensuring compliance and safety in drug development to enhance the company's market competitiveness.
- New Vice Presidents: Five new Vice Presidents appointed, underscoring the company's commitment to leadership development, which will enhance the team's expertise to better achieve strategic objectives and drive long-term growth.
See More
Zymeworks (ZYME) Reports Positive Phase 3 HERIZON-GEA-01 Results for Ziihera with Up to $440M in Milestone Payments
- Phase 3 Trial Results: Zymeworks presented positive results for Ziihera (zanidatamab-hrii) in the HERIZON-GEA-01 trial for HER2-positive gastroesophageal adenocarcinoma at ASCO GI, indicating strong potential as a first-line treatment.
- Milestone Revenue: The company stated that up to $440 million in milestone payments related to regulatory approvals of Ziihera in the U.S., Europe, Japan, and China could significantly enhance its financial position and market competitiveness.
- Cash Flow Outlook: As of December 31, 2025, Zymeworks holds approximately $270.6 million in cash, cash equivalents, and marketable securities, which, combined with anticipated regulatory milestone payments, is expected to provide cash runway beyond 2028.
- R&D Pipeline Progress: The company is conducting a global Phase 1 trial of ZW191 for solid tumors, with dose optimization underway, and further data from this study is expected to be presented at a major medical conference in 2026, bolstering its R&D capabilities.
See More
Zymeworks Reports Positive Phase 3 Results for Ziihera with Up to $440 Million in Potential Milestones
- Clinical Trial Success: Ziihera demonstrated significant improvement in progression-free survival in the HERIZON-GEA-01 Phase 3 trial for HER2-positive gastroesophageal adenocarcinoma, exceeding a four-month increase over the control group, which is expected to drive future regulatory approvals and market sales.
- Potential Revenue Growth: Zymeworks anticipates up to $440 million in regulatory milestone payments, with $250 million from the U.S. market, significantly enhancing the company's financial flexibility and long-term growth potential.
- Share Repurchase Program: The company announced a $125 million share repurchase plan in November 2025, having repurchased approximately $19 million worth of shares, aimed at enhancing shareholder value by reducing the share count while maintaining cash resources for operations and growth investments.
- Strong Financial Foundation: As of December 31, 2025, Zymeworks reported approximately $270.6 million in cash and cash equivalents, combined with anticipated regulatory milestone payments, expected to support operations beyond 2028, ensuring long-term sustainable growth.
See More
