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LB1908

Phase 1

Gastric Cancer | Monoclonal antibody | Oncology |Legend Biotech Corporation|Last Updated: Sep 2, 2026

Target and mechanism

Molecular targetCLDN18.2
Target classProtein
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment56

FDA Designations

No designations recorded

Clinical trial landscape

LB1908 · 1 trial · 4 indications

Phase 1 1
NCT05539430Claudin 18.2-Targeted Chimeric Antigen Receptor T-cells in Subjects With Unresectable, Locally Advanced, or Metastatic Gastric, Gastroesophageal Junction (GEJ), Esophageal, or Pancreatic AdenocarcinomaGastric Cancer
ACTIVE NOT_RECRUITING56 Analytics
PHASE1ACTIVE NOT_RECRUITING
Claudin 18.2-Targeted Chimeric Antigen Receptor T-cells in Subjects With Unresectable, Locally Advanced, or Metastatic Gastric, Gastroesophageal Junction (GEJ), Esophageal, or Pancreatic Adenocarcinoma
Gastric CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

To characterize the safety and tolerability of LB1908 and determine the optimal dose or recommended dose for expansion (RDE)
Through study completion, a minimum of 2 years

Multiple doses will be tested to establish a recommended dose.

To further characterize the safety and tolerability of LB1908 with the RDE identified in the dose-escalation and determine the recommended Phase 2 dose (RP2D)
Through study completion, a minimum of 2 years

Treatment of additional patients at the recommended dose as identified in the initial dose escalation part of the study.

Secondary Endpoints

To evaluate the preliminary efficacy of LB1908
Through study completion, a minimum of 2 years
To characterize the pharmacokinetics of LB1908 in blood
Through study completion, a minimum of 2 years
To evaluate the immunogenicity of LB1908
Through study completion, a minimum of 2 years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Experimental LB1908EXPERIMENTALClaudin 18.2-Targeted Chimeric Antigen Receptor T-cells

Interventions

NameTypeDescription
LB1908BIOLOGICALClaudin 18.2-Targeted autologous Chimeric Antigen Receptor T-cells
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites9

Inclusion Criteria: For inclusion in the study, all of the following inclusion criteria must be fulfilled. 1. Be willing and able to provide written informed consent. 2. Be a female or male ≥ 18 and ≤ 75 years old at the time of signing of the prescreening ICF. 3. For Part A and Part B Cohort MR1 ...

Countries:United States
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Competitive Landscape -Gastric Cancer 112 trials

Top 20 of 45 competitors

CompanyTickerTrialsLead PhaseDrugs
AstraZeneca PLCAZN16PHASE3AZD0901, Ramucirumab, paclitaxel, Paclitaxel, Docetaxel
BeOne Medicines Ltd. Sponsored ADRONC4PHASE3Tislelizumab, Cisplatin, Leucovorin, 5-fluorouracil, Oxaliplatin
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Tislelizumab, Trastuzumab, Capecitabine, Oxaliplatin
Arcus Biosciences, Inc.RCUS2PHASE3Domvanalimab, Zimberelimab, Capecitabine, Fluorouracil, Leucovorin
Bristol-Myers Squibb CompanyBMY6PHASE2Pumitamig, Folfox, Capox, Nivolumab
Pfizer Inc.PFE7PHASE2disitamab vedotin, tucatinib
Agenus Inc.AGEN2PHASE3Balstilimab, Botensilimab, Folfox Protocol, XELOX, Nivolumab
AbbVie, Inc.ABBV2PHASE2Telisotuzumab Adizutecan, Budigalimab, Fluorouracil, Leucovorin, Oxaliplatin
Eli Lilly and CompanyLLY2PHASE2Ramucirumab, Paclitaxel
Compass Therapeutics, Inc.CMPX1PHASE2CTX-009, Paclitaxel
ALX Oncology Holdings, Inc.ALXO1PHASE2Evorpacept, Trastuzumab, Ramucirumab, Paclitaxel
GE Healthcare Technologies Inc.GEHC1PHASE2GEH300079 Positron-Emission Tomography/Computed Tomography
ImmunityBio IncIBRX1PHASE2N-803, Pembrolizumab
Apollomics Inc. Class AAPLM1PHASE2APL-101
Exelixis, Inc.EXEL2PHASE1cabozantinib, atezolizumab
Tango Therapeutics, Inc.TNGX2PHASE2Trifluridine/Tipiracil, Oxaliplatin, FOLFOX regimen, Nivolumab
Inhibrx Biosciences, Inc.INBX1PHASE1INBRX-106- Hexavalent OX40 agonist antibody, pembrolizumab, Carboplatin AUC-5, Pemetrexed/m2, Cisplatin/m2
Incyte CorporationINCY1PHASE2Capecitabine, Oxaliplatin, Retifanlimab
I-Mab Biopharma US LimitedIMAB2PHASE2Givastomig, Nivolumab, 5Fluorouracil, Leucovorin, Oxaliplatin
Enliven Therapeutics, Inc.ELVN1PHASE1ELVN-002, Trastuzumab, 5-Fluorouracil, Oxaliplatin, Capecitabine
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Recent Changes (Last 90 Days)

LOWSep 2, 2026NCT05539430lastUpdatePostDate: changed
LOWSep 2, 2026NCT05539430lastUpdatePostDate: changed
LOWSep 2, 2026NCT05539430lastUpdatePostDate: changed

Frequently asked questions about LB1908

What is LB1908 used for?

LB1908 is an investigational monoclonal antibody being developed for the treatment of gastric cancer. It is currently in Phase 1 clinical development for this indication. The drug is being studied in patients with unresectable, locally advanced, or metastatic gastric cancer.

What does LB1908 target?

LB1908 targets CLDN18.2, a protein that is expressed in certain cancer cells. By binding to this target, the drug is designed to interfere with cancer cell growth. CLDN18.2 is a specific molecular target being investigated in oncology for its role in gastric and other gastrointestinal cancers.

Who makes LB1908?

LB1908 is being developed by Legend Biotech Corporation, a biopharmaceutical company. Legend Biotech is publicly traded on the Nasdaq stock exchange under the ticker symbol LEGN. The company is conducting clinical trials to evaluate the safety and efficacy of LB1908.

What phase is LB1908 in?

LB1908 is currently in Phase 1 clinical development. It is an investigational drug, meaning it has not yet been approved by regulatory authorities. The Phase 1 trial is active but not recruiting participants, and is designed to assess the drug's safety, tolerability, and preliminary efficacy.

What clinical trials is LB1908 in?

LB1908 is being studied in a Phase 1 clinical trial with the identifier NCT05539430. This trial is enrolling patients with gastric, gastroesophageal junction, esophageal, or pancreatic adenocarcinoma. The study is active but not recruiting, with a planned enrollment of 56 participants in the United States.

Is LB1908 the same as a CAR-T therapy?

LB1908 is a monoclonal antibody, not a CAR-T therapy. However, the clinical trial NCT05539430 is investigating a Claudin 18.2-targeted chimeric antigen receptor T-cell therapy in similar patient populations. LB1908 itself is a separate investigational drug being developed by Legend Biotech.