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Advanced Solid TumorPhase 1NCT06422520

A First-in-Human Study of BGB-C354 Alone and in Combination With Tislelizumab in Participants With Advanced Solid Tumors

A Phase 1 study testing BGB-C354 and Tislelizumab in people with Advanced Solid Tumor, run by BeOne Medicines at 14 sites in 3 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a first-in-human, Phase 1a/1b study to evaluate the safety, tolerability, pharmacokinetics, and preliminary antitumor activity of BGB-C354 alone and in combination with tislelizumab in participants with advanced solid tumors. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Advanced Solid Tumor
What is being tested?
BGB-C354 and Tislelizumab
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
63 participants
Where
14 sitesin 3 countries
Study dates
8 Jul 2024to 15 May 2026
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Able to provide a signed and dated written informed consent prior to any study-specific procedures, sampling, or data collection.
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1.
  • Participants with histologically or cytologically confirmed advanced, metastatic, or unresectable solid tumors, whose cancer is not amenable to therapy with curative intent:
  • ≥ 1 measurable lesion per RECIST v1.1.
  • Able to provide an archived tumor tissue sample.
  • Adequate organ function.
  • Females of childbearing potential must be willing to use a highly effective method of birth control for the duration of the study, and for ≥ 7 months after the last dose of study drug(s).
  • Nonsterile males must be willing to use a highly effective method of birth control for the duration of the study treatment period and for ≥ 4 months after the last dose of study drug(s).

Who cannot join

  • Prior treatment with B7H3-targeted therapy.
  • For Part B and Phase 1b: Prior treatment with antibody drug conjugates (ADCs) with topoisomerase I inhibitor payload (for Phase 1b, unless otherwise specified for specific cohorts).
  • Participants with spinal cord compressions, active leptomeningeal disease or uncontrolled, or untreated brain metastasis
  • Any malignancy ≤ 2 years before the first dose of study treatment(s) except for the specific cancer under investigation in this study and any locally recurring cancer that has been treated with curative intent (eg, resected basal or squamous cell skin cancer, superficial bladder cancer, or carcinoma in situ of the cervix or breast).
  • History of interstitial lung disease, ≥ Grade 2 noninfectious pneumonitis, oxygen saturation at rest < 92%, or requirement for supplemental oxygen at baseline
  • Uncontrolled diabetes, or > Grade 1 laboratory test abnormalities in potassium, sodium, or corrected calcium levels despite standard medical management ≤ 14 days before the first dose of study drug(s).
  • Infection (including tuberculosis infection) requiring systemic (oral or intravenous) antibacterial, antifungal, or antiviral therapy ≤ 14 days before the first dose of study treatment(s).
  • Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Trial locations and contacts

14 sites in 3 countries.

14 sites in 3 countries

United States5 sites
  • Dana Farber Cancer Institute

    Boston, Massachusetts, 02215-5418

  • The University of Texas Md Anderson Cancer Center

    Houston, Texas, 77030-4009

  • Florida Cancer Specialist Research Institute Lake Nona

    Orlando, Florida, 32827-7400

  • Next Oncology

    San Antonio, Texas, 78229-6028

  • Washington University School of Medicine

    St Louis, Missouri, 63110-1010

Other trials in United States

China5 sites
  • Beijing Cancer Hospital

    Beijing, Beijing Municipality, 100142

  • Jilin Cancer Hospital

    Changchun, Jilin, 130021

  • West China Hospital, Sichuan University

    Chengdu, Sichuan, 610041

  • Liaoning Cancer Hospital and Institute

    Shenyang, Liaoning, 110042

  • Hubei Cancer Hospital

    Wuhan, Hubei, 430079

Other trials in China

Australia4 sites
  • St Vincents Hospital Melbourne

    Fitzroy, Victoria, VIC 3065

  • The Alfred Hospital

    Melbourne, Victoria, VIC 3004

  • One Clinical Research

    Nedlands, Western Australia, WA 6009

  • Westmead Hospital

    Westmead, New South Wales, NSW 2145

Other trials in Australia

About this study

Official title: A Phase 1 Study Investigating the Safety, Tolerability, Pharmacokinetics, and Preliminary Antitumor Activity of BGB-C354, an Antibody-Drug Conjugate Targeting B7H3, Alone and in Combination With Anti-PD-1 Monoclonal Antibody Tislelizumab in Patients With Advanced Solid Tumors

This is a first-in-human, Phase 1a/1b study to evaluate the safety, tolerability, pharmacokinetics, and preliminary antitumor activity of BGB-C354 alone and in combination with tislelizumab in participants with advanced solid tumors.

Study details include:

  • The study will be conducted in 2 phases: Phase 1a (Monotherapy Dose Escalation and Safety Expansion) and Phase 1b (Dose Expansion).
  • The visit frequency will be approximately every 21 days during study treatment. Maximum treatment duration will be up to two years.
  • The study duration is estimated to be approximately 5 years.
Read the detailed description

Our company, previously known as BeiGene, is now officially BeOne Medicines. Because some of our older studies were sponsored under the name BeiGene, you may see both names used for this study on this website.

Being tested
BGB-C354, Tislelizumab
Keywords
BGB-C354, Tislelizumab, First-in-human, Advanced solid tumor, Anti-PD-1 Monoclonal Antibody, B7H3, antibody drug conjugate

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • BGB-C354Drug

    Administered by intravenous infusion

  • TislelizumabDrug

    Administered by intravenous infusion

Study groups in NCT06422520
Study groupRoleWhat they receive
Phase 1a: Part A (Monotherapy Dose Escalation)ExperimentalBGB-C354 monotherapy doses at sequentially increasing levels.
Receives: Drug: BGB-C354
Phase 1a: Part B (Safety Expansion)ExperimentalParticipants will enroll at safe dose levels recommended by the Safety Monitoring Committee (SMC) for further evaluation.
Receives: Drug: BGB-C354
Phase 1b: Part C (Monotherapy Expansion)ExperimentalBGB-C354 will be administered at the recommended dose for expansion (RDFE).
Receives: Drug: BGB-C354
Phase 1b: Part D (Combination Therapy Expansion)ExperimentalBGB-C354 and tislelizumab will be adminsitered at doses determined by the SMC.
Receives: Drug: BGB-C354; Drug: Tislelizumab

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Phase 1a: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)

    Number of participants with AEs and SAEs characterized by type, frequency, severity (as graded by the National Cancer Institute- Common Terminology Criteria for Adverse Events Version 5.0 [NCI-CTCAE v 5.0]), timing, seriousness, and relationship to study drug(s); physical examinations; electrocardiograms (ECGs); and laboratory assessments as needed; and adverse events meeting protocol-defined dose-limiting toxicity (DLT) criteria

    Measured: Approximately 24 months

  2. Phase 1a: Maximum Tolerated Dose (MTD) or Maximum Administered Dose (MAD) of BGB-C354

    Defined as the highest dose evaluated for which the estimated toxicity rate is closest to the target toxicity rate of 30% or the highest dose administered, respectively

    Measured: Approximately 1 month

  3. Phase 1a: Recommended Dose for Expansion (RDFE) of BGB-C354

    The potential RDFE(s) of BGB-C354 will be determined based on the MTD or MAD, taking into consideration the long-term tolerability, pharmacokinetics (PK), preliminary antitumor activity, and any other relevant data, as available

    Measured: Approximately 24 months

  4. Phase 1b: Overall Response Rate (ORR)

    ORR is defined as the percentage of participants with best overall response (BOR) of complete response (CR) or partial response (PR) assessed by the investigator using Response Evaluations Criteria in Solid Tumors Version 1.1 (RECIST v1.1).

    Measured: Approximately 24 months

  5. Phase 1b: Recommended Phase 2 dose (RP2D) of BGB-C354 alone and in combination with tislelizumab

    The RP2D of BGB-C354 will be determined based on safety, PK, pharmacodynamics, preliminary antitumor activity, and other relevant data, as available.

    Measured: Approximately 24 months

Secondary outcomes (15)
  1. Phase 1a: ORR

    ORR is defined as the percentage of participants with best overall response (BOR) of complete response (CR) or partial response (PR) assessed by the investigator using RECIST v1.1.

    Measured: Approximately 24 months

  2. Duration of Response (DOR)

    DOR is defined as the time from the first determination of an objective response per RECIST v1.1 until the first documentation of disease progression or death, whichever occurs first as assessed by the investigator.

    Measured: Approximately 24 months

  3. Disease Control Rate (DCR)

    DCR is defined as the percentage of participants with best overall response of CR, PR, or stable disease as determined from tumor assessments by the investigator using RECIST v1.1.

    Measured: Approximately 24 months

  4. Phase 1b: Progression Free Survival (PFS)

    PFS is defined as the time from the date of the first dose of study drug(s) to the date of the first documentation of progressive disease assessed by the investigator using RECIST v1.1 or death, whichever occurs first as determined from tumor assessments by the investigator using RECIST v1.1.

    Measured: Approximately 24 months

  5. Phase 1b: Number of Participants with Adverse Events (AEs) and Serious Adverse Events

    Number of participants with AEs and SAEs characterized by type, frequency, severity (as graded by the National Cancer Institute- Common Terminology Criteria for Adverse Events Version 5.0 [NCI-CTCAE v 5.0]), timing, seriousness, and relationship to study drug(s); physical examinations; electrocardiograms (ECGs); and laboratory assessments as needed; and adverse events meeting protocol-defined dose-limitingtoxicity (DLT) criteria

    Measured: Approximately 24 months

  6. Maximum observed plasma concentration (Cmax) for BGB-C354

    Measured: Twice in the first 3 months

  7. Minimum observed plasma concentration (Cmin) for BGB-C354

    Measured: Approximately 12 months

  8. Time to maximum plasma concentration (Tmax) for BGB-C354

    Measured: Twice in the first 3 months

  9. Half-life (t1/2) for BGB-C354

    Measured: Twice in the first 3 months

  10. Area under the concentration-time curve (AUC) for BGB-C354

    Measured: Twice in the first 3 months

  11. Apparent clearance (CL/F) for BGB-C354

    Measured: Approximately 12 months

  12. Apparent volume of distribution (Vz/F) for BGB-C354

    Measured: Approximately 12 months

  13. Accumulation ratio for BGB-C354

    Measured: Approximately 12 months

  14. Number of participants with anti-drug antibodies (ADAs) to BGB-C354

    Measured: Approximately 12 months

  15. Serum concentration of BGB-C354

    Measured: Approximately 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 May 2024
  2. Study start8 Jul 2024
  3. Primary completion15 May 2026
  4. Study completion15 May 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
63 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06422520
Sponsor's protocol ID
BGB-C354-101
Other IDs
2024-513280-11-00
Status last verified
Jun 2026
First submitted
15 May 2024
Last updated
8 Jun 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: BeOne shares data on completed studies responsibly and provides qualified scientific and medical researchers access to data and supporting documentation for clinical trials in dossiers for medicines and indications after submission and approval in the United States, China, and Europe. Clinical trials supporting subsequent local approvals, new indications, or combination products are eligible for sharing once corresponding regulatory approvals are achieved. BeOne shares data only when permitted by applicable data privacy and security laws and regulations, when it is feasible to do so without compromising the privacy of study participants, and other considerations. Qualified researchers with appropriate competencies who are engaged in novel scientific research may submit a request for participant-level data with a research proposal for BeOne review. Research teams must include a biostatistician and sign a Data Sharing Agreement prior to receiving access to clinical trial data.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing BGB-C354 and Tislelizumab in people with Advanced Solid Tumor, run by BeOne Medicines at 14 sites in 3 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 14 sites in United States, China, Australia. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Phase 1a: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs) (time frame: Approximately 24 months). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Jun 2026.

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