ClinicalTrials.gg
RecruitingNCT05294731Updated Oct 21, 2026

Treatment of Chinese Participants With B-Cell Malignancies With BGB-16673, a Bruton Tyrosine Kinase-Targeted Protein-Degrader

A Phase 1/2 interventional study of Tacabrutideg in B-cell Malignancy, Non-Hodgkin Lymphoma and Mantle Cell Lymphoma, sponsored by BeOne Medicines. Recruiting at 29 sites in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-21.

Sponsored by BeOne Medicines · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started May 2022; still recruiting 4 years 6 months later.
Updated Oct 21, 2026Primary completion movedEligibility revised+4 moreGo to Updates ↓
Phase
Phase 1/2
Study type
Interventional
Enrollment
146
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 195 studies in Lymphoma, Non-Hodgkin with a site in China — 82 open to participants now, 109 under way, 14 of them phase 3. Lymphoma, Non-Hodgkin · China.

Planned enrollment
43rd of 183
146 · median 58
Started
2022
with 27 others
Phase 1/2
42 of 195
27 open now
Primary completion
2027-06
later than 71 of 108 live
Registered
109th of 195
by date
Lead sponsor
4 of 195
BeOne Medicines

Among the 195 studies in Lymphoma, Non-Hodgkin with a site in China, this one is the 43rd largest by planned enrollment of the 183 interventional ones that give a count, is one of 28 that started in 2022, is one of 42 in phase 1/2, reaches primary completion later than 71 of the 108 other live ones, and was the 109th registered.

Lymphoma, Non-Hodgkin

2,287 studies on the registry are indexed under Lymphoma, Non-Hodgkin; 287 are open to participants now.

Browse Lymphoma, Non-Hodgkin studies →

Open to participants now

82 of the 195 studies in Lymphoma, Non-Hodgkin with a site in China are open now. Recruiting first, the newest first:

77 more — sign in →

All 82 open studies →

A study can be open while its sites in China have not opened yet or have stopped. Only those recruiting at a site in China →

Who these studies take

Of the 246 Lymphoma, Non-Hodgkin studies recruiting now, 146 (59%) set no upper age limit and 77 (31%) stop at 75 or younger; 68 take children under 18; 10 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 195 studies in Lymphoma, Non-Hodgkin with a site in China, or all of them as a file.
02

Study summary

This study aims to explore the recommended phase 2 dose and evaluate the safety, tolerability and preliminary antitumor activity of BGB-16673 monotherapy at the recommended Phase 2 dose for the selected B-cell malignancy expansion cohorts

Read the detailed description

A B-cell malignancy is a type of cancer that starts in white blood cells called B-cells. These cancers can affect the lymph nodes, bone marrow, blood, and spleen. Examples include marginal zone lymphoma, follicular lymphoma, non-Hodgkin lymphoma, Waldenström macroglobulinemia, chronic lymphocytic leukemia, small lymphocytic lymphoma, mantle cell lymphoma, and diffuse large B cell lymphoma.

Tacabrutideg is a type of medicine called a BTK degrader. BTK (Bruton's tyrosine kinase) is a protein that helps cancer cells survive. Tacabrutideg is designed to attach to the BTK protein and tag it for removal, so that the body's own cellular "clean-up" system breaks it down and clears it away. When more BTK is removed from the body, it interferes with the signals needed for the cancer cells to multiply and survive and may also reduce the chance of the cancer becoming resistant to treatment.

The purpose of this study is to test whether tacabrutideg is safe and if it can help treat B-cell malignancies. The main goals are to ensure the drug is safe by monitoring side effects and to understand how well patients respond to the treatment and whether their cancers shrink or disappear.

This study consists of two parts: dose escalation and dose expansion. During the dose escalation part, the study doctors will test different doses of the study drug to find the recommended dose that people can take without having serious side effects. During the dose expansion part, the study doctors will test the study drug in a larger number of people using the dose or doses identified from dose escalation. The study is open label, which means that the participants and the study doctors will know what treatment is received.

This study will enroll approximately 146 participants with B-cell malignancies at multiple centers worldwide.

The approximate duration of participation for each participant is up to 3 years. Participants will make regular visits to the clinic for treatment, health checks, blood tests, and tumor and imaging tests.

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.

03

Conditions studied

  • B-cell Malignancy
  • Non-Hodgkin Lymphoma
  • Mantle Cell Lymphoma
  • Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma
  • Waldenström Macroglobulinemia
  • Marginal Zone Lymphoma
  • Follicular Lymphoma
  • DLBCL Unclassifiable
  • Richter's Transformation

Keywords

  • B-cell Malignancy
  • MZL
  • FL
  • DLBCL
  • Richter's Transformation
  • CDAC
  • BTK
  • degrader
  • BGB-16673
04

Who can participate

The criteria were revised on the registry on Oct 21, 2026. See what changed

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria

  1. Provision of signed and dated written prior to any study-specific procedures, sampling, or data collection
  2. (ECOG) Performance Status of 0 to 2
  3. Adequate hematologic, coagulation, renal, pancreatic, and hepatic function, and according to disease-specific criteria, as applicable
  4. Phase 1: Confirmed diagnosis of R/R Marginal Zone Lymphoma (MZL), Follicular Lymphoma (grade 1-3a), Waldenström Macroglobulinemia (WM), non-germinal center B-cell (non-GCB) diffuse large B-cell lymphoma (DLBCL), Richter's transformation to DLBCL, MCL, or CLL/SLL
  5. Phase 2: Confirmed diagnosis of MCL, or CLL/SLL
  6. Highly effective method of during study treatment period, and for ≥ 30 days after the last dose of the study drug

Key Exclusion Criteria

  1. Prior (other than the disease under study) within the past 2 years, except for curatively treated basal or squamous skin cancer, superficial bladder cancer, carcinoma in situ of the cervix or breast, or localized Gleason score ≤ 6 prostate cancer
  2. Require ongoing systemic treatment for any other malignancy or systemic treatment
  3. Current or history of central nervous involvement
  4. Prior stem cell transplant unless ≥ 3 months after transplant, prior chimeric cell therapy unless ≥ 6 months after cell infusion, prior allogeneic stem cell transplant ≤ 6 months before the first dose of the study drug

Note: Other protocol defined Inclusion/Exclusion criteria may apply

Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
146 participants (estimated)

Study arms

  • Experimental
    Phase 1a Monotherapy Dose Escalation

    Tacabrutideg will be orally administered.

    Drug: Tacabrutideg

  • Experimental
    Phase 1b Monotherapy Safety Expansion

    Tacabrutideg will be orally administered.

    Drug: Tacabrutideg

  • Experimental
    Phase 2 Monotherapy Dose Expansion

    Tacabrutideg will be administered at the recommended Phase 2 dose (RP2D) that was identified in Part 1.

    Drug: Tacabrutideg

Interventions

06

What researchers measure

Primary outcomes

  1. Phase 1: Number of participants with adverse events (AEs) and serious adverse events (SAEs)

    Number of participants with AEs and SAEs as graded by the National Cancer Institute- Common Terminology Criteria for Adverse Events Version 5 (NCI CTCAE 5.0), including AEs that meet protocol-defined dose-limiting toxicity (DLT) criteria.

    Time frame: From first dose of the study drug(s) to 30 days after the last dose or before initiation of a new anticancer therapy, whichever occurs first (up to approximately 3 years)

  2. Phase 1: Recommended Phase 2 dose (RP2D) of Tacabrutideg

    As determined by the sponsor based on the Safety Monitoring Committee's recommendation considering totality of the available clinical safety, clinical efficacy, pharmacokinetics, and pharmacodynamics data.

    Time frame: From the date of first dose of study drugs until RP2D is determined (up to approximately 37 weeks)

  3. Phase 1a: Maximum tolerated dose (MTD) of Tacabrutideg

    The highest dose evaluated as recommended by the Bayesian Optimal Interval Design with Informative Prior (iBOIN) design or the maximum assessed dose (MAD).

    Time frame: From the date of first dose of study drugs until RP2D is determined (up to approximately 37 weeks)

  4. Phase 2: Overall Response Rate (ORR) in participants with Relapsed/Refractory (R/R) Mantle Cell Lymphoma (MCL)

    ORR is defined as the percentage of participants with partial response or better according to the Investigators assessment and as determined by Lugano criteria.

    Time frame: Up to approximately 3 years

  5. Phase 2: ORR in participants with R/R Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL)

    ORR is defined as the percentage of participants with partial response or better as assessed by the Independent Review Committee (IRC) and determined by the International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria for CLL and by Lugano criteria for SLL

    Time frame: Up to approximately 3 years

Secondary outcomes

  1. Maximum observed plasma concentration (Cmax) After a Single Dose of Tacabrutideg

    Time frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose

  2. Time to reach maximum observed plasma concentration (Tmax) After a Single Dose of Tacabrutideg

    Time frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose

  3. Minimum observed plasma concentration (Cmin) After a Single Dose of Tacabrutideg

    Time frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose

  4. Apparent terminal elimination half-life (t1/2) After a Single Dose of Tacabrutideg

    Time frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose

  5. Area under the plasma-concentration curve (AUC) After a Single Dose of Tacabrutideg

    Time frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose

  6. Apparent oral clearance (CL/F) After a Single Dose of Tacabrutideg

    Time frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose

  7. Apparent volume of distribution (Vz/F) After a Single Dose of Tacabrutideg

    Time frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose

  8. Maximum observed steady state plasma concentration (Css,max) of Tacabrutideg

    Time frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose

  9. Time to reach maximum observed steady state plasma concentration (Tss,max) of Tacabrutideg

    Time frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose

  10. Minimum observed steady state plasma concentration (Css,min) of Tacabrutideg

    Time frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose

  11. Steady state area under the plasma concentration-time curve (AUC) of Tacabrutideg

    Time frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose

  12. Accumulation ratios of Cmax and AUC of Tacabrutideg

    Time frame: Phase 1a: Day 1 pre-dose up to 72 hours post-dose, Week 5 pre-dose up to 8 hours post-dose; Phase 1b: Week 1 and Week 5 pre-dose up to 6 hours post-dose; Phase 2: Week 1 and Week 5 pre-dose up to 8 hours post-dose

  13. Bruton's tyrosine kinase (BTK) protein degradation in peripheral blood after Tacabrutideg monotherapy

    Time frame: Phase 1a: Day 1 pre-dose up to 72 hours post-dose, Week 5 pre-dose and 8 hours post-dose, Week 9 pre-dose; Phase 1b: Week 1 and Week 5 pre-dose and 6 hours post-dose, Week 9 pre-dose; Phase 2: Week 1, Week 5, Week 9 pre-dose

  14. Phase 1: ORR

    ORR is defined as the percentage of participants with partial or complete response, as assessed by the investigator using International Workshop on Chronic Lymphocytic Leukemia (iwCLL), Owen, and Lugano criteria.

    Time frame: Up to approximately 3 years

  15. Phase 1: Major Response Rate (MRR) in participants with Waldenstrom macroglobulinemia (WM)

    MRR is defined as the percentage of participants who achieved complete response (CR), very good partial response (VGPR), and partial response (PR), as assessed by investigators for participants with WM only.

    Time frame: Up to approximately 3 years

  16. Phase 2: Number of participants with AEs and SAEs

    Number of participants with AEs and SAEs as graded by the National Cancer Institute- Common Terminology Criteria for Adverse Events Version 5 (NCI CTCAE 5.0).

    Time frame: From first dose of the study drug(s) to 30 days after the last dose or before initiation of a new anticancer therapy, whichever occurs first (up to approximately 3 years)

  17. Phase 2: Duration of Response (DOR) Participants with R/R CLL/SLL

    DOR is defined as the time from the date that response criteria are first met to the date that progressive disease is objectively documented or death, whichever comes first as determined by IRC and investigators.

    Time frame: Up to approximately 3 years

  18. Phase 2: DOR in Participants with R/R MCL

    DOR is defined as the time from the date that response criteria are first met to the date that progressive disease is objectively documented or death, whichever comes first as determined by investigators.

    Time frame: Up to approximately 3 years

  19. Phase 2: Time to Response (TTR) in Participants with R/R CLL/SLL

    TTR is defined as the time from study treatment start to date of the earliest qualifying response (partial response or better) as determined by IRC and investigators.

    Time frame: Up to approximately 3 years

  20. Phase 2: TTR in Participants with R/R MCL

    TTR is defined as the time from study treatment start to date of the earliest qualifying response (partial response or better) as determined by investigators.

    Time frame: Up to approximately 3 years

  21. Phase 2: Progression Free Survival (PFS) in Participants with R/R CLL/SLL

    PFS is defined as the time from first dose until first documentation of progression or death, whichever comes first, as determined by IRC and investigators.

    Time frame: Up to approximately 3 years

  22. Phase 2: PFS in Participants with R/R MCL

    PFS is defined as the time from first dose until first documentation of progression or death, whichever comes first, as determined by investigators.

    Time frame: Up to approximately 3 years

  23. Phase 2: Overall Survival (OS)

    OS is defined as the time from first study drug administration to the date of death due to any cause.

    Time frame: Up to approximately 3 years

  24. Phase 2: Best Overall Response (BOR) of Partial Response with Lymphocytosis (PR-L) in Participants with R/R CLL/SLL

    BOR of PR-L or better as determined by IRC and by investigators per iwCLL criteria for CLL and per Lugano criteria for SLL

    Time frame: Up to approximately 3 years

  25. Phase 2: DOR of Partial Response with Lymphocytosis (PR-L) in Participants with R/R CLL/SLL

    DOR is defined as the time from the date that response criteria are first met to the date that progressive disease is objectively documented or death, whichever comes first as determined by IRC and by investigators.

    Time frame: Up to approximately 3 years

  26. Phase 2: TTR of Partial Response with Lymphocytosis (PR-L) in Participants with R/R CLL/SLL

    TTR is defined as the time from study treatment start to date of the earliest qualifying response as determined by IRC and investigators.

    Time frame: Up to approximately 3 years

  27. Phase 2: Change from baseline in National Comprehensive Cancer Network/Functional Assessment of Cancer Therapy Lymphoma Cancer Symptom Index-18 (NFLymSI-18) Disease-related Symptom Physical and Treatment Side Effect Subscales in participants with R/R MCL

    The NFLymSI-18 questionnaire contains 18 items, each of which utilizes a Likert scale with 5 possible responses ranging from 0 'Not at all' to 4 'Very much' and is divided into a total score. A mixed model for repeated measures (MMRM) will be used to estimate the mean change from baseline for NFlymSI-18 subscales of Disease-Related Symptoms Physical (DRSP), and "treatment side effects" (TSE).

    Time frame: Baseline; Day 1 of Weeks 5, 13, 25, and 37; 30 days after the last dose (up to approximately 3 years)

  28. Phase 2: Mean change from baseline for the Functional Assessment of Cancer Therapy - Leukemia (FACT-Leu ) questionnaire Physical Well-being and Functional Well-being Subscales for participants with R/R CLL/SLL

    FACT-Leu is a 44-item patient reported outcome questionnaire with five subscales used to measure health-related quality of life (HRQoL) in leukemia patients. Each question is scored from 0 (not at all) to 4 (very much).

    Time frame: Baseline; Day 1 of Weeks 5, 13, 25, and 37; 30 days after the last dose (up to approximately 3 years)

07

Study locations

29 of 29 sites recruiting
08

References and documents

Individual participant data

Plan to share: 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.

Supporting information: Study protocol, Statistical analysis plan, Clinical study report

Time frame: See plan description

Access criteria: See plan description

Data sharing details ↗ · beonemedicines.com

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2022 (actual). Primary completion is estimated for Jun 2027, 61 months after the start.

Of 69 industry-sponsored phase 1/2 interventional studies under Lymphoma, Non-Hodgkin, half reached primary completion within 65 months of starting (the median), counting those still running; a quarter within 40 and three quarters within 103. This study's planned 61 months is close to that.

Counting every sponsor, half of 135 studies reached it within 72 months; a quarter within 50 and three quarters within 104.

Primary completion moved once since we started tracking on Sep 25, 2026: Jan 2029 → Jun 2027, on Oct 21, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Feb 22, 2022
First posted
Mar 24, 2022
StartActual
May 6, 2022
Primary completionEst.
Jun 30, 2027was Jan 2029
CompletionEst.
Jan 31, 2029
Last update
Oct 21, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Primary completion
Jan 31, 2029→Jun 30, 2027
Oct 21, 2026
Eligibility
3 criteria edited, 1 removed
What changed in the criteria
  • EditedProvision of signed and dated written informed consent prior to any study-specific procedures, sampling, or data collection
  • ChangedBefore Adequate organ function of coagulation function, liver function, renal function and pancreatic function and measure disease per disease-specific response criteriaNow Adequate hematologic, coagulation, renal, pancreatic, and hepatic function, and measurable disease according to disease-specific criteria, as applicable
  • EditedHighly effective method of birth control during study treatment period, and for at least 90≥ 30 days after the last dose of the study drug
  • RemovedReceiving treatment with a strong CYP3A inhibitor or inducer ≤ 14 days before the first dose of BGB-16673, or proton-pump inhibitors ≤ 5 days before the first dose of BGB-16673.
Oct 21, 2026
Interventions
Changed BGB-16673→Tacabrutideg
Oct 21, 2026
Primary outcomes
2 edited, 2 description edited
What changed in the outcomes
  • EditedPhase 1: Recommended Phase 2 dose (RP2D) of BGB-16673TacabrutidegTime frame: From the date of first dose of study drugs until RP2D is determined (up to approximately 37 weeks)
  • EditedPhase 1a: Maximum tolerated dose (MTD) of BGB-16673TacabrutidegTime frame: From the date of first dose of study drugs until RP2D is determined (up to approximately 37 weeks)
  • DescriptionPhase 2: ORR in participants with R/R Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL): how it is measured was reworded
  • DescriptionPhase 2: Overall Response Rate (ORR) in participants with Relapsed/Refractory (R/R) Mantle Cell Lymphoma (MCL): how it is measured was reworded
Oct 21, 2026
Secondary outcomes
19 edited, 2 time frame changed, 3 added
What changed in the outcomes
  • EditedMaximum observed plasma concentration (Cmax) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
  • EditedTime to reach maximum observed plasma concentration (Tmax) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
  • EditedMinimum observed plasma concentration (Cmin) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
  • EditedApparent terminal elimination half-life (t1/2) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
  • EditedArea under the plasma-concentration curve (AUC) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
  • EditedApparent oral clearance (CL/F) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
  • EditedApparent volume of distribution (Vz/F) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
  • EditedMaximum observed steady state plasma concentration (Css,max) of of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
  • EditedTime to reach maximum observed steady state plasma concentration (Tss,max) of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
  • EditedMinimum observed steady state plasma concentration (Css,min) of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
  • EditedSteady state area under the plasma concentration-time curve (AUC) of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
  • EditedAccumulation ratios of Cmax and AUC of BGB-16673TacabrutidegTime frame: Phase 1a: Day 1 pre-dose up to 72 hours post-dose, Week 5 pre-dose up to 8 hours post-dose; Phase 1b: Week 1 and Week 5 pre-dose up to 6 hours post-dose; Phase 2: Week 1 and Week 5 pre-dose up to 8 hours post-dose
  • EditedBruton's tyrosine kinase (BTK) protein degradation in peripheral blood after BGB-16673Tacabrutideg monotherapyTime frame: Phase 1a: Day 1 pre-dose up to 72 hours post-dose, Week 5 pre-dose and 8 hours post-dose, Week 9 pre-dose; Phase 1b: Week 1 and Week 5 pre-dose and 6 hours post-dose, Week 9 pre-dose; Phase 2: Week 1, Week 5, Week 9 pre-dose
  • EditedPhase 1: Overall Response Rate (ORR)Time frame: Up to approximately 3 years
  • EditedPhase 2: ORRDOR in participantsParticipants with R/R MCL as assessed by investigatorsTime frame: Up to approximately 3 years
  • EditedPhase 2: Duration of Response (DOR) Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
  • EditedPhase 2: Time to Response (TTR) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
  • EditedPhase 2: Progression Free Survival (PFS) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
  • EditedPhase 2: ORR assessed by the InvestigatorTTR in participantsParticipants with R/R CLL/SLLMCLTime frame: Up to approximately 3 years
  • AddedPhase 2: PFS in Participants with R/R MCLTime frame: Up to approximately 3 years
  • AddedPhase 2: DOR of Partial Response with Lymphocytosis (PR-L) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
  • AddedPhase 2: TTR of Partial Response with Lymphocytosis (PR-L) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
  • Time framePhase 2: Change from baseline in National Comprehensive Cancer Network/Functional Assessment of Cancer Therapy Lymphoma Cancer Symptom Index-18 (NFLymSI-18) Disease-related Symptom Physical and Treatment Side Effect Subscales in participants with R/R MCLBaseline and Day 1 of weeks 5, 13, 25, and 37 → Baseline; Day 1 of Weeks 5, 13, 25, and 37; 30 days after the last dose (up to approximately 3 years)
  • Time framePhase 2: Mean change from baseline for the Functional Assessment of Cancer Therapy - Leukemia (FACT-Leu ) questionnaire Physical Well-being and Functional Well-being Subscales for participants with R/R CLL/SLLBaseline and Day 1 of weeks 5, 13, 25, and 37 → Baseline; Day 1 of Weeks 5, 13, 25, and 37; 30 days after the last dose (up to approximately 3 years)
Oct 21, 2026
Contact
Study contact changed: c•••@beigene.com · •••5568→c•••@beonemed.com · •••5568. See the current contact
Oct 21, 2026
Sponsor
BeiGene→BeOne Medicines
Oct 21, 2026
Show all 1 update
  1. Oct 21, 2026
    Primary completion Jan 31, 2029→Jun 30, 2027
    Eligibility 3 criteria edited, 1 removed
    What changed in the criteria
    • EditedProvision of signed and dated written informed consent prior to any study-specific procedures, sampling, or data collection
    • ChangedBefore Adequate organ function of coagulation function, liver function, renal function and pancreatic function and measure disease per disease-specific response criteriaNow Adequate hematologic, coagulation, renal, pancreatic, and hepatic function, and measurable disease according to disease-specific criteria, as applicable
    • EditedHighly effective method of birth control during study treatment period, and for at least 90≥ 30 days after the last dose of the study drug
    • RemovedReceiving treatment with a strong CYP3A inhibitor or inducer ≤ 14 days before the first dose of BGB-16673, or proton-pump inhibitors ≤ 5 days before the first dose of BGB-16673.
    Primary outcomes 2 edited, 2 description edited
    What changed in the outcomes
    • EditedPhase 1: Recommended Phase 2 dose (RP2D) of BGB-16673TacabrutidegTime frame: From the date of first dose of study drugs until RP2D is determined (up to approximately 37 weeks)
    • EditedPhase 1a: Maximum tolerated dose (MTD) of BGB-16673TacabrutidegTime frame: From the date of first dose of study drugs until RP2D is determined (up to approximately 37 weeks)
    • DescriptionPhase 2: ORR in participants with R/R Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL): how it is measured was reworded
    • DescriptionPhase 2: Overall Response Rate (ORR) in participants with Relapsed/Refractory (R/R) Mantle Cell Lymphoma (MCL): how it is measured was reworded
    Secondary outcomes 19 edited, 2 time frame changed, 3 added
    What changed in the outcomes
    • EditedMaximum observed plasma concentration (Cmax) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
    • EditedTime to reach maximum observed plasma concentration (Tmax) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
    • EditedMinimum observed plasma concentration (Cmin) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
    • EditedApparent terminal elimination half-life (t1/2) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
    • EditedArea under the plasma-concentration curve (AUC) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
    • EditedApparent oral clearance (CL/F) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
    • EditedApparent volume of distribution (Vz/F) After a Single Dose of BGB-16673TacabrutidegTime frame: Phase 1a: Week 1 Day 1 pre-dose up to 72 hours post-dose; Phase 1b: Week 1 Day 1 pre-dose and up to 6 hours post-dose; Phase 2: Week 1 Day 1 pre-dose and up to 8 hours post-dose
    • EditedMaximum observed steady state plasma concentration (Css,max) of of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
    • EditedTime to reach maximum observed steady state plasma concentration (Tss,max) of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
    • EditedMinimum observed steady state plasma concentration (Css,min) of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
    • EditedSteady state area under the plasma concentration-time curve (AUC) of BGB-16673TacabrutidegTime frame: Phase 1a and Phase 2: Week 5 Day 1 pre-dose and up to 8 hours post-dose; Phase 1b: Week 5 Day 1 pre-dose and up to 6 hours post-dose
    • EditedAccumulation ratios of Cmax and AUC of BGB-16673TacabrutidegTime frame: Phase 1a: Day 1 pre-dose up to 72 hours post-dose, Week 5 pre-dose up to 8 hours post-dose; Phase 1b: Week 1 and Week 5 pre-dose up to 6 hours post-dose; Phase 2: Week 1 and Week 5 pre-dose up to 8 hours post-dose
    • EditedBruton's tyrosine kinase (BTK) protein degradation in peripheral blood after BGB-16673Tacabrutideg monotherapyTime frame: Phase 1a: Day 1 pre-dose up to 72 hours post-dose, Week 5 pre-dose and 8 hours post-dose, Week 9 pre-dose; Phase 1b: Week 1 and Week 5 pre-dose and 6 hours post-dose, Week 9 pre-dose; Phase 2: Week 1, Week 5, Week 9 pre-dose
    • EditedPhase 1: Overall Response Rate (ORR)Time frame: Up to approximately 3 years
    • EditedPhase 2: ORRDOR in participantsParticipants with R/R MCL as assessed by investigatorsTime frame: Up to approximately 3 years
    • EditedPhase 2: Duration of Response (DOR) Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
    • EditedPhase 2: Time to Response (TTR) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
    • EditedPhase 2: Progression Free Survival (PFS) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
    • EditedPhase 2: ORR assessed by the InvestigatorTTR in participantsParticipants with R/R CLL/SLLMCLTime frame: Up to approximately 3 years
    • AddedPhase 2: PFS in Participants with R/R MCLTime frame: Up to approximately 3 years
    • AddedPhase 2: DOR of Partial Response with Lymphocytosis (PR-L) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
    • AddedPhase 2: TTR of Partial Response with Lymphocytosis (PR-L) in Participants with R/R CLL/SLLTime frame: Up to approximately 3 years
    • Time framePhase 2: Change from baseline in National Comprehensive Cancer Network/Functional Assessment of Cancer Therapy Lymphoma Cancer Symptom Index-18 (NFLymSI-18) Disease-related Symptom Physical and Treatment Side Effect Subscales in participants with R/R MCLBaseline and Day 1 of weeks 5, 13, 25, and 37 → Baseline; Day 1 of Weeks 5, 13, 25, and 37; 30 days after the last dose (up to approximately 3 years)
    • Time framePhase 2: Mean change from baseline for the Functional Assessment of Cancer Therapy - Leukemia (FACT-Leu ) questionnaire Physical Well-being and Functional Well-being Subscales for participants with R/R CLL/SLLBaseline and Day 1 of weeks 5, 13, 25, and 37 → Baseline; Day 1 of Weeks 5, 13, 25, and 37; 30 days after the last dose (up to approximately 3 years)
    Interventions Changed BGB-16673→Tacabrutideg
    Sponsor BeiGene→BeOne Medicines
    Contact Study contact changed: c•••@beigene.com · •••5568→c•••@beonemed.com · •••5568. See the current contact
    + 4 other changes: verification date, description, design details and data sharing statement

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT05294731
Lead sponsor
BeOne Medicines
Responsible party
Sponsor
First posted
Mar 24, 2022
Start date
May 6, 2022
Primary completion
Jun 30, 2027 (estimated)
Completion
Jan 31, 2029 (estimated)
Last update
Oct 21, 2026

Study contacts

BeOne Medicines
Contact
clinicaltrials@beonemed.com
1.877.828.5568
Study Director
study director · BeOne Medicines

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Tacabrutideg

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