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BGB-B455

Phase 1

Advanced Solid Tumor | Small molecule | Oncology |BeOne Medicines Ltd.|Last Updated: Aug 24, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment90

FDA Designations

No designations recorded

Clinical trial landscape

BGB-B455 · 1 trial · 2 indications

Phase 1 1
NCT06803680A Study of BGB-B455 in Adults With Advanced or Metastatic Solid TumorsAdvanced Solid Tumor
RECRUITING90 Analytics
PHASE1RECRUITING
A Study of BGB-B455 in Adults With Advanced or Metastatic 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 30 days after the last dose or initiation of a new anticancer therapy, whichever occurs first; up to approximately 7 months

Number of participants with AEs and SAEs, including laboratory abnormalities, and AEs that meet protocol-defined dose-limiting toxicity (DLT) criteria or protocol-defined adverse events of special interest (AESI) criteria.

Phase 1a: Maximum Tolerated Dose (MTD) or Maximum Administered Dose (MAD) of BGB-B455
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: RDFE of BGB-B455
Approximately 1 month

RDFE of BGB-B455 will be determined based upon the MTD or MAD.

Phase 1b: Overall Response Rate (ORR)
Approximately 18 months

ORR is defined as the percentage of participants with best overall response of complete response (CR) or partial response (PR), as determined from tumor assessments by investigator per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1). CR and PR must be confirmed by repeat assessments.

Secondary Endpoints

Phase 1a: ORR
Approximately 18 months
Phase 1a and 1b: Duration of Response (DOR)
Approximately 18 months
Phase 1a and 1b: Disease Control Rate (DCR)
Approximately 18 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1a: Dose Escalation and Safety ExpansionEXPERIMENTALSequential cohorts of increasing dose levels of BGB-B455 will be evaluated as monotherapy.
Phase 1b: Dose ExpansionEXPERIMENTALRecommended Dose(s) for Expansion (RDFE\[s\]) of BGB-B455 determined from Phase 1a as monotherapy or in combination with investigator-selected chemotherapy will be evaluated for selected indications based on emerging data.

Interventions

NameTypeDescription
BGB-B455DRUGPlanned doses administered on specified days per protocol.
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 Sites11

Inclusion Criteria: * Histologically or cytologically confirmed advanced or metastatic, and unresectable solid tumors who have previously received standard systemic therapy for advanced or metastatic disease or for whom treatment is not available or not tolerated. Only participants with CLDN6+ high...

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

Recent Changes (Last 90 Days)

LOWAug 24, 2026NCT06803680lastUpdatePostDate: changed
LOWAug 24, 2026NCT06803680lastUpdatePostDate: changed
LOWAug 11, 2026NCT06803680lastUpdatePostDate: changed
LOWAug 11, 2026NCT06803680lastUpdatePostDate: changed
LOWAug 11, 2026NCT06803680lastUpdatePostDate: changed
LOWJul 8, 2026NCT06803680lastUpdatePostDate: changed
LOWJul 8, 2026NCT06803680lastUpdatePostDate: changed

Frequently asked questions about BGB-B455

What is BGB-B455 used for?

BGB-B455 is an investigational small molecule being developed for the treatment of advanced or metastatic solid tumors. It is currently being studied in a Phase 1 clinical trial in adults with advanced solid tumors or metastatic solid tumors.

Who makes BGB-B455?

BGB-B455 is being developed by BeOne Medicines Ltd., a biopharmaceutical company listed on the stock exchange under the ticker ONC. The company is conducting a Phase 1 clinical trial to evaluate the drug in patients with advanced or metastatic solid tumors.

What phase is BGB-B455 in?

BGB-B455 is currently in Phase 1 clinical development. It is an investigational drug and has not yet been approved by regulatory authorities. The ongoing Phase 1 trial is recruiting participants with advanced or metastatic solid tumors.

What clinical trials is BGB-B455 in?

BGB-B455 is being evaluated in a single Phase 1 clinical trial with the identifier NCT06803680. This trial is titled 'A Study of BGB-B455 in Adults With Advanced or Metastatic Solid Tumors' and is currently recruiting participants in the United States, Australia, and China.

How many patients are enrolled in the BGB-B455 trial?

The Phase 1 clinical trial of BGB-B455 (NCT06803680) has a planned enrollment of 90 participants. The study is open to adults aged 18 years and older with advanced or metastatic solid tumors, and it is currently recruiting.