Study of BGB-26808 with or without Tislelizumab for Advanced Solid Tumors

This study is testing a new drug called BGB-26808, either by itself or combined with another drug called Tislelizumab, for people with advanced solid tumors. BGB-26808 is given as a daily pill, and Tislelizumab is given through an IV. The main goal is to find the safest and most effective dose of BGB-26808. We're looking for participants aged 18 and older who have advanced solid tumors and a good general health status (ECOG Performance Status ≤ 1). Success for this part of the study means understanding the side effects and finding the best dose of BGB-26808. The current recruitment status is unclear.

Study design
This is an open-label study, meaning you and your doctors will know which treatment you are receiving. It is a multicenter study, not randomized, and plans to enroll 217 participants.
What's involved
Not specified in the trial record.
Compensation
Not stated in the trial record.
Follow-up
Participants will be followed for side effects from the first dose up to 90 days after the last dose, or until a new cancer treatment starts, for up to approximately 12 months.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT05981703

A Study Investigating BGB-26808 Alone or in Combination With Tislelizumab in Participants With Advanced Solid Tumors

Recruiting
PHASE1Ages 18+InterventionalTreatment
BeOne Medicines
~337 participants
Updated 2026-09-14 on ClinicalTrials.gov
What's tested:BGB-26808TislelizumabChemotherapy

At a glance

Recruiting sites
24 of 28 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Phase 1a: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)
Measured over 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
+3 more outcomes measured
Advanced Solid Tumor
Solid Tumor

NCT05981703

Where you'd take part

This study runs at 28 sites. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Auckland City Hospital

    Auckland, New Zealandno site contact published

    Recruiting

  • City of Hope National Medical Center

    Duarte, Californiano site contact published

    Recruiting

  • Hangzhou First Peoples Hospital

    Hangzhou, Zhejiang, Chinano site contact published

    Recruiting

  • Harbin Medical University Cancer Hospital

    Harbin, Heilongjiang, Chinano site contact published

    Recruiting

  • Harbour Cancer and Wellness

    Auckland, New Zealandno site contact published

    Recruiting

  • Health New Zealand Te Whatu Ora Lakes Rotorua Hospital

    Rotorua, New Zealandno site contact published

    Recruiting

  • Hubei Cancer Hospital

    Wuhan, Hubei, Chinano site contact published

    Recruiting

  • Icahn School of Medicine At Mount Sinai

    New York, New Yorkno site contact published

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

  • Study Director · STUDY_DIRECTOR · BeOne Medicines

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  • 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-26808Approximately 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-26808Approximately 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.