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Breast CancerPhase 1NCT06493864

A Study of BL-B16D1 in Patients With Unresectable Locally Advanced or Metastatic Breast Cancer and Other Solid Tumors

A Phase 1 study testing BL-B16D1 in people with Breast Cancer and Solid Tumor, run by Sichuan Baili Pharmaceutical Co., Ltd. at 1 site in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This study is an open, multicenter, increasing dose and dose extension nonrandomized phase I clinical study to evaluate the safety, tolerability, pharmacokinetics characteristics and preliminary efficacy of BL-B16D1 in patients with unresectable locally advanced or metastatic breast cancer and other solid tumor. Read more about this study

Who is it for?
Ages 18 to 75 years
Conditions the study is for
Breast Cancer, Solid Tumor
What is being tested?
BL-B16D1
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
21 participants
Where
1 siteChina
Study dates
26 Aug 2024to Jul 2026
Phase
Phase 1
Are there results?
Not yet: the study is under way

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 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Sign the informed consent form voluntarily and follow the protocol requirements;
  • Gender is not limited;
  • Age: ≥18 years old and ≤75 years old (stage Ia); ≥18 years old (stage Ib);
  • Expected survival time ≥3 months;
  • Patients with histologically and/or cytologically confirmed unresectable locally advanced or metastatic breast cancer and other solid tumors who failed or could not receive standard treatment;
  • Consent to provide archival tumor tissue samples or fresh tissue samples from primary or metastatic lesions within 3 years;
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  • Must have at least one extracranial measurable lesion that meets the RECIST v1.1 definition;
  • ECOG 0 or 1;
  • The toxicity of previous antineoplastic therapy has returned to ≤ grade 1 as defined by NCI-CTCAE v5.0;
  • No severe cardiac dysfunction, left ventricular ejection fraction ≥50%;
  • The organ function level must meet the requirements if the patient has not received blood transfusion or hematopoietic stimulation factor therapy within 14 days before the first dose;
  • Coagulation function: international normalized ratio ≤1.5, and activated partial thromboplastin time ≤1.5ULN;
  • Urinary protein ≤2+ or ≤1000mg/24h;
  • For premenopausal women with childbearing potential, a pregnancy test must be performed within 7 days before starting treatment, serum pregnancy must be negative, and the patient must not be lactating; All enrolled patients (male or female) should use adequate contraception throughout the treatment cycle and for 6 months after completion of treatment.

Who cannot join

  • Chemotherapy, biological therapy and other anti-tumor therapies have been used within 4 weeks or 5 half-lives before the first dose; Mitomycin and nitrosoureas were administered within 6 weeks before the first dose; Oral drugs such as fluorouracil;
  • History of severe heart disease;
  • Prolonged QT interval, complete left bundle branch block, III degree atrioventricular block;
  • Active autoimmune and inflammatory diseases;
  • Patients with other malignant tumors or a history of other malignant tumors;
  • Unstable thrombotic events requiring therapeutic intervention within 6 months before screening; Infusion-related thrombosis was excluded;
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  • Hypertension poorly controlled by two antihypertensive drugs (systolic blood pressure \> 150 mmHg or diastolic blood pressure \> 100 mmHg);
  • Patients with poor glycemic control;
  • Patients with grade ≥1 radiation pneumonitis according to the RTOG/EORTC definition; Previous history of ILD or current ILD, or suspicion of such disease during screening;
  • Complicated with pulmonary diseases leading to clinically severe respiratory function impairment;
  • Patients with primary central nervous system (CNS) tumors or CNS metastases that had failed local treatment;
  • Patients with a history of allergy to recombinant humanized antibody or human-mouse chimeric antibody or to any of BL-B16D1's excipients;
  • Received previous organ transplantation or allogeneic hematopoietic stem cell transplantation (Allo-HSCT);
  • In previous (new) adjuvant anthracyclines, the cumulative dose of anthracyclines for doxorubicin > 550 mg/m2, epirubicin > 900 mg/m2 or the equivalent dose of other similar drugs;
  • Human immunodeficiency virus antibody positive, active tuberculosis, active hepatitis B virus infection or active hepatitis C virus infection;
  • Serious infection occurred within 4 weeks before the first dose; Signs of pulmonary infection or active pulmonary inflammation within 2 weeks before the first dose;
  • Patients with massive or symptomatic effusions, or poorly controlled effusions;
  • Had participated in another clinical trial within 4 weeks before the first dose (calculated from the time of the last dose);
  • Had the following eye diseases: a. active infection or corneal ulcer; b. monocular vision; c. a history of corneal transplantation; d. Contact lens dependence; e. Uncontrolled glaucoma; f. Uncontrolled or progressive retinopathy, wet macular degeneration, etc.;
  • Other circumstances that the investigator deemed inappropriate for participation in the trial.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Sa Xiao, PHD contact

15013238943

xiaosa@baili-pharm.com

China1 site, 1 recruiting

  • Fudan University Shanghai Cancer Center

    Shanghai, Shanghai Municipality

    Jiong Wu

    Jiong Wu

    Recruiting

Other trials in China

About this study

Official title: A Phase I Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics Characteristics and Preliminary Efficacy of BL-B16D1 in Patients With Unresectable Locally Advanced or Metastatic Breast Cancer and Other Solid Tumor

This study is an open, multicenter, increasing dose and dose extension nonrandomized phase I clinical study to evaluate the safety, tolerability, pharmacokinetics characteristics and preliminary efficacy of BL-B16D1 in patients with unresectable locally advanced or metastatic breast cancer and other solid tumor.

Being tested
BL-B16D1
Medical subject headings
Breast Neoplasms

What participants receive

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

  • BL-B16D1Drug

    Administration by intravenous infusion for a cycle of 3 weeks.

Study groups in NCT06493864
Study groupRoleWhat they receive
BL-B16D1ExperimentalParticipants receive BL-B16D1 as intravenous infusion for the first cycle (3 weeks). Participants with clinical benefit could receive additional treatment for more cycles. The administration will be terminated because of disease progression or intolerable toxicity occurring or other reasons.
Receives: Drug: BL-B16D1

What is being measured

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

  1. Phase Ia: Dose limiting toxicity (DLT)

    DLTs are assessed according to NCI-CTCAE v5.0 during the first cycle and defined as occurrence of any of the toxicities in DLT definition if judged by the investigator to be possibly, probably or definitely related to study drug administration.

    Measured: Up to 21 days after the first dose

  2. Phase Ia: Maximum tolerated dose (MTD)

    MTD is defined as the highest dose level at which no more than 1 in 6 participants experienced a DLT during the first cycle .

    Measured: Up to 21 days after the first dose

  3. Phase Ib: Recommended Phase II Dose (RP2D)

    The RP2D is defined as the dose level chosen by the sponsor (in consultation with the investigators) for phase II study, based on safety, tolerability, efficacy, PK, and PD data collected during the dose escalation study of BL-B16D1.

    Measured: Up to approximately 24 months

Secondary outcomes (11)

  1. Treatment-Emergent Adverse Event (TEAE)

    TEAE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally emerging, or any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition during the treatment of BL-B16D1 . The type, frequency and severity of TEAE will be evaluated during the treatment of BL-B16D1.

    Measured: Up to approximately 24 months

  2. Cmax

    Maximum serum concentration (Cmax) of BL-B16D1 will be investigated.

    Measured: Up to approximately 24 months

  3. Tmax

    Time to maximum serum concentration (Tmax) of BL-B16D1 will be investigated.

    Measured: Up to approximately 24 months

  4. T1/2

    Half-life (T1/2) of BL-B16D1 will be investigated.

    Measured: Up to approximately 24 months

  5. AUC0-t

    AUC0-t is defined as area under the serum concentration-time curve from time 0 to the time of the last measurable concentration.

    Measured: Up to approximately 24 months

  6. CL (Clearance)

    CL in the serum of BL-B16D1 per unit of time will be investigated.

    Measured: Up to approximately 24 months

  7. Ctrough

    Ctrough is defined as the lowest serum concentration of BL-B16D1 prior to the next dose will be administered.

    Measured: Up to approximately 24 months

  8. ADA (anti-drug antibody)

    Frequency of anti-BL-B16D1 antibody (ADA) will be investigated.

    Measured: Up to approximately 24 months

  9. Phase Ib: Objective Response Rate (ORR)

    ORR is defined as the percentage of participants, who has a CR (disappearance of all target lesions) or PR (at least a 30% decrease in the sum of diameters of target lesions). The percentage of participants who experiences a confirmed CR or PR is according to RECIST 1.1.

    Measured: Up to approximately 24 months

  10. Phase Ib: Disease Control Rate (DCR)

    The DCR is defined as the percentage of participants who has a CR, PR, or Stable Disease (SD: neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease [PD: at least a 20% increase in the sum of diameters of target lesions and an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered PD]).

    Measured: Up to approximately 24 months

  11. Phase Ib: Duration of Response (DOR)

    The DOR for a responder is defined as the time from the participant's initial objective response to the first date of either disease progression or death, whichever occurs first.

    Measured: Up to approximately 24 months

Timeline

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

  1. First posted10 Jul 2024
  2. Study start26 Aug 2024
  3. Primary completionJul 2026 (estimated)
  4. Study completionJul 2026 (estimated)

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
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
21 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06493864
Sponsor's protocol ID
BL-B16D1-103
Status last verified
Sep 2025
First submitted
2 Jul 2024
Last updated
18 Sep 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing BL-B16D1 in people with Breast Cancer and Solid Tumor, run by Sichuan Baili Pharmaceutical Co., Ltd. at 1 site in China.

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 14 inclusion and 20 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: looking for participants now, as of the sponsor's last update on 18 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. 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?

This study is still under way. Results are not available in the source record yet.

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

Contact Sa Xiao, PHD (15013238943, xiaosa@baili-pharm.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Phase Ia: Dose limiting toxicity (DLT) (time frame: Up to 21 days after the first dose). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06493864.

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 18 Sep 2025.

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