Drugs / Zanidatamab
last change Aug 2026 re-read 8 days ago

Zanidatamab

also known as ZW25 · Zanidatamab-hrii · Ziihera

Monoclonal antibody targets ERBB2 via depletion

Developed for
HER2 positive breast carcinoma · gastroesophageal adenocarcinoma · endometrial cancer · gastric cancer · gastroesophageal cancer · gastroesophageal junction adenocarcinoma · biliary tract cancer · carcinoma
+27 more · non-small cell lung carcinoma · rectal carcinoma · urothelial carcinoma · biliary tract neoplasm · breast cancer · cancer · colon carcinoma · colorectal cancer · colorectal carcinoma · colorectal neoplasm · digestive system carcinoma · endometrium neoplasm · esophageal adenocarcinoma · esophageal cancer · gastric neoplasm · head and neck cancer · head and neck neoplasm · malignant pancreatic neoplasm · metastatic carcinoma · ovarian cancer · ovarian neoplasm · pancreatic neoplasm · salivary gland cancer · sarcoma · urinary bladder carcinoma · uterine carcinosarcoma · uterine cervix neoplasm
Investigated by
Jazz Pharmaceuticals · BeOne Medicines · BeiGene · Zymeworks BC Inc. · ALX Oncology Inc. · Jazz Pharmaceuticals Ireland Limited
+32 more · National Cancer Institute, France · QuantumLeap Healthcare Collaborative · UNICANCER · Accord Healthcare, Inc. · American Association for Cancer Research · Anhui Provincial Hospital · Astellas Pharma Inc · BeOne Pharmaceutical Co., Ltd. · Belgian Group of Digestive Oncology · Canadian Cancer Trials Group · Cancer Research UK · Cancer Research UK & UCL Cancer Trials Centre · Emory University · Fujian Medical University Union Hospital · Haihua Yuan · Institut für Klinische Krebsforschung IKF GmbH at Krankenhaus Nordwest · M.D. Anderson Cancer Center · MedSIR · Memorial Sloan Kettering Cancer Center · Natera, Inc. · National Cancer Institute (NCI) · Pfizer · Pierre Fabre Laboratories · Roche Diagnostics GmbH · Servier · Taiho Oncology, Inc. · Tao Zhang · TransCode Therapeutics · Universitaire Ziekenhuizen KU Leuven · Xijing Hospital · Yonsei University · Zhifeng Zhao, PhD

Regulatory milestones approvals, filings & regulatory actions · 10 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Filed biliary tract cancer 7 milestones
Filed China (NMPA) — biliary tract cancer 2024-11-05

“A BLA for zanidatamab in second-line BTC was accepted for review by the Center for Drug Evaluation of the National Medical Products Administration in China in 2024” zymeworks.com ↗

Filed US (FDA) — biliary tract cancer 2024-10-31

“Our partner Jazz Pharmaceuticals has submitted a New Drug Application for zanidatamab, the late-stage HER2-targeting bispecific antibody to the FDA” zymeworks.com ↗

Filed China (NMPA) — biliary tract cancer 2024-08-07

“BLA accepted by the NMPA for zanidatamab for the treatment of second-line biliary tract cancer” beonemedicines.com ↗

Filed China (NMPA) — biliary tract cancer 2024-06-10

“in China has accepted the BLA for zanidatamab for second-line treatment of HER2-positive BTC.” zymeworks.com ↗

Filed US (FDA) — biliary tract cancer 2024-05-29

“In 2Q24, the U.S. FDA accepted and granted Priority Review of the Biologics License Application for zanidatamab” jazzpharma.com ↗

“FDA has accepted and granted Priority Review of the Biologics License Application (BLA) for zanidatamab” jazzpharma.com ↗

Filed US (FDA) — biliary tract cancer 2024-03-06

“A Biologics License Application (BLA) to the U.S. Food and Drug Administration (FDA) seeking accelerated approval for the HER2-targeted bispecific antibody zanidatamab as a...” zymeworks.com ↗

“Initiation of rolling biologics license application (BLA) filing with the FDA for zanidatamab as second-line treatment for biliary tract cancers (BTC)” zymeworks.com ↗

“In April 2024 , our partner Jazz announced the completion of the rolling BLA submission to the FDA seeking accelerated approval for zanidatamab” zymeworks.com ↗

“The U.S. Food and Drug Administration (FDA) has accepted and granted Priority Review of the Biologics License Application (BLA) for zanidatamab” jazzpharma.com ↗

“In 2Q24, the U.S. FDA accepted and granted Priority Review of the Biologics License Application for zanidatamab” jazzpharma.com ↗

Filed EU (EMA) — biliary tract cancer —

“The European Medicines Agency validated the marketing authorization application for zanidatamab in second-line BTC in 2024” zymeworks.com ↗

“Marketing Authorization Application for zanidatamab which was recently submitted to the European Medicines Agency” jazzpharma.com ↗

“In July, our partner Jazz announced that the EMA validated the MAA for zanidatamab in 2L BTC.” zymeworks.com ↗

Filed gastroesophageal adenocarcinoma 2 milestones
Filed China (NMPA) ZIIHERA gastroesophageal adenocarcinoma 2026-05-06

“BeOne also received acceptance for the filing of the sBLA for zanidatamab by the Center for Drug Evaluation of the China National Medical Products” zymeworks.com ↗

“Received acceptance of sBLA by the CDE in China for the treatment of adult patients with first-line HER2-positive GEA” beonemedicines.com ↗

Filed US (FDA) Ziihera gastroesophageal adenocarcinoma 2026-04-27

“FDA accepted for filing with Priority Review the supplemental Biologics License Application (sBLA) for Ziihera ® (zanidatamab-hrii) containing combinations for the first-line...” jazzpharma.com ↗

“Jazz announced U.S. FDA acceptance with Priority Review of Supplemental Biologics License Application (sBLA) for zanidatamab in first-line HER2-positive unresectable locally...” zymeworks.com ↗

“A supplemental biologics license application for zanidatamab is under FDA Real-Time Oncology Review in first-line HER2+ locally advanced or metastatic GEA.” jazzpharma.com ↗

Approved Indication not stated 1 milestone
Approved · conditional EU (EMA) Ziihera — 2025-06-27 europa.eu ↗

Trials 31

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 11 trial
Phase 1 NCT02892123 Sep 2016 → Oct 2024 HER2 positive breast carcinoma Jazz Pharmaceuticals Completed No outcome recorded
Phase 1/25 trials
Phase 1/2 NCT07494448 Jul 2026 → Dec 2027 expected HER2 positive breast carcinoma MedSIR Not yet recruiting No outcome recorded
Phase 1/2 NCT07477444 Jun 2026 → Jun 2028 expected gastroesophageal cancer Universitaire Ziekenhuizen KU Leuven Not yet recruiting No outcome recorded
Phase 1/2 NCT05868226 Feb 2023 → Dec 2030 expected HER2 positive breast carcinoma, colon adenocarcinoma, hormone receptor-positive breast cancer, metastatic malignant neoplasm +2 QuantumLeap Healthcare Collaborative Recruiting No outcome recorded
Phase 1/2 NCT05027139 Sep 2021 → Aug 2025 carcinoma Jazz Pharmaceuticals Completed No outcome recorded
Phase 1/2 NCT04276493 Mar 2020 → Dec 2023 breast cancer, gastric cancer, gastroesophageal cancer BeiGene Completed No outcome recorded
Phase 219 trials · 1 met primary · 1 missed
Phase 2 NCT07841873 Nov 2026 → Jun 2028 expected biliary tract cancer Anhui Provincial Hospital Not yet recruiting No outcome recorded
Phase 2 NCT07290985 Jul 2026 → Jun 2028 expected gastroesophageal adenocarcinoma American Association for Cancer Research Recruiting No outcome recorded
Phase 2 NCT07685704 Jul 2026 → Jun 2028 expected gastric cancer, gastroesophageal junction adenocarcinoma Zhifeng Zhao, PhD Not yet recruiting No outcome recorded
Phase 2 NCT07631871 Jun 2026 → Dec 2029 expected colorectal neoplasm, endometrium neoplasm, head and neck neoplasm, ovarian neoplasm +3 Haihua Yuan Not yet recruiting No outcome recorded
Phase 2 NCT07405476 Apr 2026 → Dec 2028 expected colon carcinoma, rectal carcinoma Emory University Recruiting No outcome recorded
Phase 2 NCT07176312 Jan 2026 → Mar 2029 expected gastroesophageal adenocarcinoma, metastatic carcinoma Institut für Klinische Krebsforschung IKF GmbH at Krankenhaus Nordwest Recruiting No outcome recorded
Phase 2 NCT07243938 Jan 2026 → Jul 2028 expected gastroesophageal junction adenocarcinoma, rectal carcinoma Tao Zhang Not yet recruiting No outcome recorded
Phase 2 NCT07273981 Jan 2026 → Jun 2028 expected gastroesophageal junction adenocarcinoma Xijing Hospital Not yet recruiting No outcome recorded
Phase 2 NCT07192068 Oct 2025 → Mar 2028 expected colorectal carcinoma, endometrial cancer, head and neck cancer, non-small cell lung carcinoma +1 UNICANCER Recruiting No outcome recorded
Phase 2 NCT07296705 Oct 2025 → Dec 2027 expected urinary bladder carcinoma Fujian Medical University Union Hospital Recruiting No outcome recorded
Phase 35 trials
Phase 3 NCT06435429 Aug 2024 → Apr 2028 expected HER2 positive breast carcinoma Jazz Pharmaceuticals Recruiting No outcome recorded
Phase 3 NCT06282575 Jul 2024 → Dec 2028 expected biliary tract cancer Jazz Pharmaceuticals Recruiting No outcome recorded
Phase 3 NCT05615818 Jul 2024 → Jun 2027 expected biliary tract neoplasm UNICANCER Recruiting No outcome recorded
Phase 3 NCT05152147 Dec 2021 → Jul 2026 overdue esophageal adenocarcinoma, gastric neoplasm, gastroesophageal adenocarcinoma Jazz Pharmaceuticals Active not recruiting No outcome recorded
Phase 3 NCT04164199 Dec 2019 → May 2026 cancer BeOne Medicines Completed No outcome recorded
Phase not stated1 trial
— NCT04578444 — carcinoma Jazz Pharmaceuticals No longer available No outcome recorded
Comparator or background therapy3 trials
Phase 1 NCT06253871 Background Mar 2024 → Dec 2027 expected HER2 positive breast carcinoma, gastroesophageal cancer, metastatic malignant neoplasm in the brain, non-small cell lung carcinoma +1 Iambic Therapeutics, Inc Recruiting No outcome recorded
Phase 1/2 NCT06324357 Background Jun 2024 → Jan 2029 expected breast cancer, colorectal cancer, esophageal adenocarcinoma, gastric adenocarcinoma +1 Boehringer Ingelheim Recruiting No outcome recorded
Phase 2 NCT07102381 Comparator Sep 2025 → Jan 2028 expected HER2 positive breast carcinoma Jazz Pharmaceuticals Recruiting No outcome recorded

News releases announcing trial results or a regulatory action · 40

DateIssuerRelease
2026-08-31 BeOne Medicines Results BeOne Medicines Announces New Phase 3 Survival Data Reinforcing Benefit of ZIIHERA-Containing Regimens in First-Line HER2+ Gastroesophageal Cancer beonemedicines.com ↗
At IA2, ZIIHERA plus chemotherapy demonstrated a statistically significant and clinically meaningful improvement in overall survival (OS) compared with trastuzumab plus chemotherapy, meeting the remaining primary endpoint analysis of the study.
2026-08-31 Jazz Pharmaceuticals Results Ziihera® (zanidatamab-hrii) plus Chemotherapy Demonstrates Statistically Significant Overall Survival Benefit Versus Trastuzumab plus Chemotherapy in First-Line HER2+ Advanced GEA jazzpharma.com ↗
The Ziihera plus chemotherapy OS hazard ratio improved compared with the first interim analysis.
2026-08-25 Zymeworks BC Inc. Regulatory U.S. FDA Approves Ziihera® (zanidatamab-hrii) with and without Tislelizumab plus Chemotherapy in First-Line HER2+ Advanced Gastroesophageal Adenocarcinoma zymeworks.com ↗
U.S. FDA Approves Ziihera® (zanidatamab-hrii) with and without Tislelizumab plus Chemotherapy in First-Line HER2+ Advanced Gastroesophageal Adenocarcinoma
2026-08-25 BeOne Medicines Regulatory BeOne Medicines Announces U.S. FDA Approval for TEVIMBRA-Based Regimen for First-Line HER2+ GEA beonemedicines.com ↗
today announced that the U.S. Food and Drug Administration (FDA) has approved the supplemental Biologics License Application (sBLA) for TEVIMBRA® (tislelizumab) in combination with ZIIHERA® (zanidatamab) and chemotherapy
2026-08-25 Jazz Pharmaceuticals Regulatory U.S. FDA Approves Ziihera® (zanidatamab-hrii) with and without Tislelizumab plus Chemotherapy in First-Line HER2+ Advanced Gastroesophageal Adenocarcinoma jazzpharma.com ↗
2026-05-27 BeOne Medicines Results BeOne Medicines Announces Phase 3 HERIZON-GEA Data Published in NEJM and Presented at ASCO 2026 beonemedicines.com ↗
TEVIMBRA plus ZIIHERA and chemotherapy demonstrated statistically significant overall survival benefit with an unprecedented seven-month improvement in first-line HER2+ GEA
2026-05-27 Jazz Pharmaceuticals Results Phase 3 HERIZON-GEA-01 Results Published in The New England Journal of Medicine Show Durable and Consistent Survival Benefit with Ziihera® (zanidatamab-hrii) Combinations in First-Line HER2+ Locally Advanced or Metastatic GEA jazzpharma.com ↗
The manuscript builds on the late-breaking oral presentation of the HERIZON-GEA-01 trial results at the 2026 ASCO Gastrointestinal Cancers Symposium (ASCO GI), where zanidatamab-containing combinations demonstrated unprecedented progression-free survival (PFS) and overall survival (OS) outcomes in a global Phase 3 trial.
2026-05-21 BeOne Medicines Results BeOne Medicines Sets the Pace in Oncology at ASCO and EHA 2026 with 60+ Abstracts beonemedicines.com ↗
TEVIMBRA in combination with ZIIHERA and chemotherapy demonstrated a statistically significant improvement in overall survival (OS) and progression-free survival (PFS) in patients with HER2+ gastroesophageal adenocarcinoma
2026-04-29 BeOne Medicines Regulatory U.S. FDA Grants Priority Review to BeOne Medicines’ TEVIMBRA in First-Line HER2+ GEA beonemedicines.com ↗
The FDA has also granted Breakthrough Therapy Designation to the regimen of ZIIHERA in combination with fluoropyrimidine- and platinum-containing chemotherapy, with and without TEVIMBRA, in this indication.
2026-04-27 Jazz Pharmaceuticals Regulatory Jazz Pharmaceuticals Announces FDA Acceptance and Priority Review of Supplemental Biologics License Application for Ziihera® (zanidatamab-hrii) Combinations in First-Line HER2+ Locally Advanced or Metastatic GEA jazzpharma.com ↗
the U.S. Food and Drug Administration (FDA) accepted for filing with Priority Review the supplemental Biologics License Application (sBLA) for Ziihera ® (zanidatamab-hrii)
2026-03-18 Zymeworks BC Inc. Results Zymeworks Announces Presentations for Ziihera® (zanidatamab-hrii) at 2026 AACR Annual Meeting zymeworks.com ↗
At six weeks, zanidatamab treatment resulted in a statistically significant decrease in tumor size and volume from baseline, and 30% of patients (n=6) achieved pathologic complete response (pCR).
2026-03-18 Jazz Pharmaceuticals Results Jazz Pharmaceuticals to Present Compelling Clinical and Pre-Clinical Data Advancing Oncology Research at AACR 2026 jazzpharma.com ↗
At six weeks, zanidatamab treatment resulted in a statistically significant decrease in tumor size and volume from baseline, and 30% of patients (n=6) achieved pathologic complete response (pCR).

All press releases naming this drug 57 releases

DateIssuerRelease

Evidence & citations 8 cited values

Every value below carries the sentence it was read from. 39 sources stand behind the page.

FieldValueCited text
Known as zanidatamab “IAM1363 monotherapy OR IAM1363 in combination with capecitabine + trastuzumab OR IAM1363 in combination with capecitabine + zanidatamab OR IAM1363 in combination with T-Dxd OR...” NCT06253871 ↗
33

“Zanidatamab (ZW25), a humanized, bispecific antibody that simultaneously binds the 2 distinct HER2 epitopes bound by trastuzumab and pertuzumab, has demonstrated safety and...” PMID 38262242 ↗ Jan 2024

“Zanidatamab, a dual human epidermal growth factor receptor 2 (HER2)-targeted bispecific antibody” PMID 40473445 ↗ Jun 2025

NCT07841873 ↗

NCT05868226 ↗

NCT05270889 ↗

NCT06043427 ↗

NCT05035836 ↗

NCT06695845 ↗

NCT07102381 ↗

NCT07296705 ↗

Show 23 more sources

Known as Zanidatamab-hrii ChEMBL registry synonym — accepted as the source's own label CHEMBL4650256 ↗
Known as Ziihera ChEMBL registry synonym — accepted as the source's own label CHEMBL4650256 ↗
Known as ZW25 “This is a first-in-human, 3-part study to investigate the safety, tolerability, and effectiveness of ZW25 (zanidatamab) by itself and combined with selected chemotherapy agents...” NCT02892123 ↗
3

“ZW25 (zanidatamab) in combination with palbociclib plus fulvestrant.” NCT04224272 ↗

NCT03929666 ↗

NCT04513665 ↗

Action Deplete “Zanidatamab is an antibody designed to destroy cancer cells that have higher-than-normal HER2 protein or gene levels.” PMID 39114870 ↗ Aug 2024
Modality Monoclonal antibody “Zanidatamab is a humanised, bispecific monoclonal antibody directed against two non-overlapping domains of HER2.” PMID 36400106 ↗ Nov 2022
Route Intravenous “Zanidatamab: IV Infusion” NCT01042379 ↗
Target ERBB2 “Zanidatamab is a humanised, bispecific monoclonal antibody directed against two non-overlapping domains of HER2.” PMID 36400106 ↗ Nov 2022