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Zanidatamab

Phase 3FDA approved

Biliary Tract Neoplasms | Monoclonal antibody | Oncology |Zymeworks Inc.|Trials Updated: May 19, 2026

Zanidatamab development status

FDA approval on record Approved
Highest phase Phase 3
Registered trials 18 across 10 sponsors since Nov 2019

Zanidatamab target and mechanism

Molecular targetERBB2
Target classInhibitor
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment800

FDA Designations

PRIORITY_REVIEW

Zanidatamab clinical trials

Zanidatamab · 1 trial · 1 indication

Phase 3 1
NCT05615818Personalized Medicine for Advanced Biliary Cancer PatientsBiliary Tract Neoplasms
RECRUITING800 Analytics
PHASE3RECRUITING
Personalized Medicine for Advanced Biliary Cancer Patients
Biliary Tract NeoplasmsUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression-free survival (PFS)
From randomisation to disease progression or death, up to 5 years.

Time from randomisation to the first documented progression of disease (PD) as assessed by the investigator according to RECIST v1.1, or death from any cause, whichever occurs first.

Secondary Endpoints

Overall Survival (OS)
From randomisation to death, up to 5 years.
Objective response rate
From randomisation, up to 5 years.
Time to treatment failure
From randomisation to treatment failure event, up to 5 years.
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ExperimentalEXPERIMENTALMolecular targeted therapy matched to genetic alteration carried by the tumour
ControlACTIVE_COMPARATORContinued standard of care treatment for first-line biliary tract cancer

Interventions

NameTypeDescription
FutibatinibDRUGDose 20 mg once a day (QD)
IvosidenibDRUGDose 500 mg QD
ZanidatamabDRUGDose: Patients \< 70 kg: 1800 mg every 3 weeks (Q3W), Patients ≥ 70 kg: 2400 mg Q3W
TrastuzumabDRUGLoading dose 8 mg/kg, then 6 mg/kg Q3W (Combination with neratinib)
NeratinibDRUGDose: 240 mg QD (combination with trastuzumab)
EncorafenibDRUGDose: 450 mg QD (Combination with binimetinib)
BinimetinibDRUGDose: 45 mg twice a day (BID) (Combination with encorafenib)
NiraparibDRUGDose: 200 mg QD or 300 mg QD
CisplatinDRUGDose: 25 mg/m2 IV on days 1 and 8 Q3W (CISGEM)
GemcitabineDRUGDose: 1000 mg/m2 IV on days 1 and 8 Q3W (CISGEM)
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites69

SCREENING PHASE Inclusion Criteria: 1. Signed a written informed consent form prior to any trial specific procedures (Consent #1) 2. Histologically-proven intrahepatic, perihilar or distal cholangiocarcinoma, or gallbladder carcinoma (ampullary carcinoma excluded) 3. De novo or recurrent, locally ...

Countries:BelgiumFranceUnited Kingdom
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Frequently asked questions about Zanidatamab

What is Zanidatamab used for?

Zanidatamab is an investigational monoclonal antibody being studied for the treatment of biliary tract neoplasms, a group of cancers affecting the bile ducts and gallbladder. It is in Phase 3 clinical development and has received a PRIORITY_REVIEW designation from the FDA. It is not yet approved for commercial use.

What does Zanidatamab target?

Zanidatamab targets ERBB2, also known as HER2, a receptor tyrosine kinase that is overexpressed in certain cancers. As an ERBB2 inhibitor, it is designed to bind to this target and interfere with signaling pathways that drive tumor growth in biliary tract neoplasms.

Who is developing Zanidatamab?

Zanidatamab is being developed by Zymeworks Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol ZYME. Zymeworks is responsible for the clinical advancement of the drug, which is currently in Phase 3 testing for biliary tract neoplasms.

What phase is Zanidatamab in?

Zanidatamab is in Phase 3 clinical development. The ongoing trial is a randomized, active-controlled study, and the drug has not yet been approved by the FDA. It remains investigational for the treatment of biliary tract neoplasms.

What clinical trials is Zanidatamab in?

Zanidatamab is being evaluated in the Phase 3 trial NCT05615818, titled Personalized Medicine for Advanced Biliary Cancer Patients. The trial is currently recruiting and has an estimated enrollment of 800 participants. It is being conducted in Belgium, France, and the United Kingdom.