A Study of BL-B01D1 in Patients With Multiple Solid Tumors, Including Recurrent or Metastatic Gynecological Malignancies

Summary

A phase Ib/II clinical study to evaluate the safety, tolerability, pharmacokinetics and efficacy of BL-B01D1 for injection in patients with multiple solid tumors, including recurrent or metastatic gynecological malignancies.

Eligibility

Inclusion Criteria:

1. Voluntarily sign the informed consent form and comply with the protocol requirements;
2. Age: ≥18 years and ≤75 years;
3. Expected survival time ≥3 months;
4. Histologically and/or cytologically confirmed recurrent or metastatic gynecological malignancies with failed standard treatment, intolerance to standard treatment, or no current standard treatment available;
5. Agree to provide archived tumor tissue specimens (10 slides) or fresh tissue samples from primary or metastatic lesions within the past 3 years;
6. Must have at least one measurable lesion as defined by RECIST v1.1;
7. ECOG performance status score of 0 or 1;
8. Toxicity from prior anti-tumor therapy has recovered to ≤ Grade 1 as defined by NCI-CTCAE v5.0;
9. No severe cardiac dysfunction, with left ventricular ejection fraction (LVEF) ≥50%;
10. Organ function levels must meet the requirements without transfusion, albumin, colony-stimulating factors, any cell growth factors, and/or platelet-raising drugs within 14 days before the first dose of the study drug;
11. Coagulation function: International Normalized Ratio (INR) ≤1.5, and activated partial thromboplastin time (APTT) ≤1.5 × ULN;
12. Urine protein ≤2+ or ≤1000 mg/24h;
13. For premenopausal women with childbearing potential, a pregnancy test (serum or urine) must be performed within 7 days before starting treatment, and the result must be negative; they must not be breastfeeding. All enrolled patients must use adequate barrier contraception throughout the treatment period and for 6 months after treatment ends.

Exclusion Criteria:

1. Received chemotherapy, biological therapy, immunotherapy, or other antitumor treatments within 4 weeks or 5 half-lives prior to the first dose (6 weeks for mitomycin and nitrosoureas; oral fluorouracil drugs, etc.);
2. History of severe heart disease;
3. Prolonged QT interval, complete left bundle branch block, third-degree atrioventricular block, or severe arrhythmia;
4. Active autoimmune or inflammatory diseases;
5. Other malignancies with progression or requiring treatment within 5 years prior to the first dose;
6. Poorly controlled hypertension (systolic blood pressure \>150 mmHg or diastolic blood pressure \>100 mmHg) despite the use of two antihypertensive medications;
7. Poorly controlled blood glucose levels;
8. History of interstitial lung disease (ILD), current ILD, or suspected ILD based on imaging during screening;
9. Concurrent pulmonary disease leading to clinically significant respiratory impairment;
10. Unstable thrombotic events requiring therapeutic intervention within 6 months before screening;
11. Patients with central nervous system (CNS) metastases and/or carcinomatous meningitis (leptomeningeal metastases);
12. Patients with significant serous cavity effusion, symptomatic effusion, or poorly controlled effusion;
13. History of hypersensitivity to recombinant humanized antibodies or human-mouse chimeric antibodies, or any excipients of BL-B01D1;
14. Imaging findings indicating tumor invasion or encasement of major thoracic, cervical, or pharyngeal blood vessels;
15. Previous organ transplantation or allogeneic hematopoietic stem cell transplantation (Allo-HSCT);
16. Cumulative anthracycline dose \>360 mg/m² in prior (neo)adjuvant anthracycline therapy;
17. Positive for human immunodeficiency virus (HIV) antibodies, active tuberculosis, active hepatitis B virus (HBV) infection, or active hepatitis C virus (HCV) infection;
18. Severe infection within 4 weeks before the first dose of the study drug; signs of active pulmonary infection within 2 weeks before the first dose;
19. Participation in another clinical trial within 4 weeks before the first dose;
20. Any other condition deemed unsuitable for participation in this clinical trial by the investigator.

Conditions3

Interventions1

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