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BGB-26808

Phase 1

Advanced Solid Tumor | Small molecule | Oncology |BeOne Medicines Ltd.|Last Updated: Sep 1, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDDMC
Total Trials1
Total Enrollment217

FDA Designations

No designations recorded

Clinical trial landscape

BGB-26808 · 1 trial · 2 indications

Phase 1 1
NCT05981703A Study Investigating BGB-26808 Alone or in Combination With Tislelizumab in Participants With Advanced Solid TumorsAdvanced Solid Tumor
RECRUITING337 Analytics
PHASE1RECRUITING
A Study Investigating BGB-26808 Alone or in Combination With Tislelizumab in Participants With Advanced Solid Tumors
Advanced Solid TumorUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 1a: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)
From the first dose of study drug(s) to 90 days after the last dose or initiation of a new anticancer therapy, whichever occurs first; up to approximately 12 months

Number of participants with AEs and SAEs, including findings from physical examinations, electrocardiograms (ECGs), laboratory assessments, and that meet protocol-defined dose-limiting toxicity criteria.

Phase 1a: Maximum Tolerated Dose (MTD) or Maximum Administered Dose (MAD) of BGB-26808
Approximately 1 month

MTD is defined as the highest dose evaluated for which estimated toxicity rate is the closest to the target toxicity rate. MAD is defined as the highest dose administered if MTD is not reached.

Phase 1a: Recommended Dose for Expansion (RDFE) of BGB-26808
Approximately 1 month

RDFE of BGB-26808 alone or in combination with tislelizumab will be determined based upon the MTD or MAD.

Phase 1b: Overall Response Rate (ORR)
Approximately 6 months

ORR is defined as the percentage of participants who had confirmed complete response (CR) or partial response (PR) assessed by the investigator using Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.

Secondary Endpoints

Phase 1a: ORR
Approximately 6 months
Phase 1a and 1b: Duration of Response (DOR)
Approximately 9 months
Phase 1a and 1b: Disease Control Rate (DCR)
Approximately 6 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1a: Dose EscalationEXPERIMENTALSequential cohorts of increasing dose levels of BGB-26808 will be evaluated as monotherapy and in combination with tislelizumab.
Phase 1b: Dose ExpansionEXPERIMENTALRecommended doses for expansion (RDFEs) for BGB-26808 from Phase 1a in combination with tislelizumab plus chemotherapy will be evaluated.

Interventions

NameTypeDescription
BGB-26808DRUGPlanned doses administered orally as a tablet daily.
TislelizumabDRUGPlanned doses administered by intravenous infusion.
ChemotherapyDRUGAdministered in accordance with relevant local guidelines and/or prescribing information.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites28

Inclusion Criteria: 1. Able to provide a signed and dated written informed consent prior to any study-specific procedures, sampling, or data collection. 2. Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 1. 3. Phase 1a: Participants with histologically or cytologically confirmed adva...

Countries:United StatesAustraliaChinaNew Zealand
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Competitive Landscape -Other Solid Tumors 9 trials (matched to "Advanced Solid Tumor")

Recent Changes (Last 90 Days)

MEDIUMSep 1, 2026NCT05981703Enrollment: 217 → 337
MEDIUMSep 1, 2026NCT05981703Enrollment: 217 → 337

Frequently asked questions about BGB-26808

What is BGB-26808 used for in advanced solid tumors?

BGB-26808 is an investigational small molecule being developed for the treatment of advanced solid tumors. It is currently being studied in a Phase 1 clinical trial, both alone and in combination with another drug, in participants with advanced solid tumors or solid tumors.

What does BGB-26808 target?

The specific molecular target of BGB-26808 has not been disclosed in available information. It is a small molecule modality under investigation for oncology indications, but its mechanism of action is not publicly detailed.

Who makes BGB-26808?

BGB-26808 is being developed by BeOne Medicines Ltd., a biopharmaceutical company listed on the stock exchange under the ticker symbol ONC. The company is conducting clinical research on this investigational drug for advanced solid tumors.

What phase is BGB-26808 in?

BGB-26808 is currently in Phase 1 clinical development. It is an investigational drug, not yet approved by regulatory authorities, and is being evaluated for safety and efficacy in patients with advanced solid tumors.

What clinical trials is BGB-26808 in?

BGB-26808 is being studied in a Phase 1 clinical trial identified as NCT05981703. This trial investigates BGB-26808 alone or in combination with tislelizumab in participants with advanced solid tumors. The study is recruiting participants in the United States, Australia, China, and New Zealand.

Is BGB-26808 the same as tislelizumab?

No, BGB-26808 is not the same as tislelizumab. BGB-26808 is an investigational small molecule being studied alone or in combination with tislelizumab in a clinical trial for advanced solid tumors. Tislelizumab is a separate drug used in combination with BGB-26808 in this study.