A Study of BL-B16D1 in Patients With Locally Advanced or Metastatic Solid Tumors

Official title

A Phase I Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics Characteristics and Preliminary Efficacy of BL-B16D1 in Patients With Locally Advanced or Metastatic Solid Tumors

Overview

This study is an open, multicenter, dose-escalation and expansion-enrollment and nonrandomized phase I clinical study to evaluate the safety, tolerability, pharmacokinetic characteristics and preliminary efficacy of BL-B16D1 in locally advanced or metastatic solid tumors.

Interventions

• Drug BL-B16D1
  Administration by intravenous infusion for a cycle of 3 weeks.

Primary outcome measures

• Phase Ia: Dose limiting toxicity (DLT) [Time frame: Up to 21 days after the first dose]
• Phase Ia: Maximum tolerated dose (MTD) [Time frame: Up to 21 days after the first dose]
• Phase Ib: Recommended Phase II Dose (RP2D) [Time frame: Up to approximately 24 months]

Secondary outcome measures (11)

• Treatment-Emergent Adverse Event (TEAE) [Time frame: Up to approximately 24 months]
• Cmax [Time frame: Up to approximately 24 months]
• Tmax [Time frame: Up to approximately 24 months]
• T1/2 [Time frame: Up to approximately 24 months]
• AUC0-t [Time frame: Up to approximately 24 months]
• CL (Clearance) [Time frame: Up to approximately 24 months]
• Ctrough [Time frame: Up to approximately 24 months]
• ADA (anti-drug antibody) [Time frame: Up to approximately 24 months]
• Phase Ib: Objective Response Rate (ORR) [Time frame: Up to approximately 24 months]
• Phase Ib: Disease Control Rate (DCR) [Time frame: Up to approximately 24 months]
• Phase Ib: Duration of Response (DOR) [Time frame: Up to approximately 24 months]

Eligibility criteria

Inclusion criteria

• Sign the informed consent form voluntarily and follow the protocol requirements;
• Gender is not limited;
• Age: ≥18 years old and ≤75 years old (phase Ia); ≥18 years old (phase Ib);
• Expected survival time ≥3 months;
• locally advanced or metastatic solid tumors confirmed by histopathology and/or cytology that failed standard treatment or could not obtain standard treatment;
• Consent to provide archival tumor tissue samples or fresh tissue samples from primary or metastatic lesions within 3 years;
• At least one measurable lesion meeting the RECIST v1.1 definition was required;
• 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 stimulating factor therapy within 14 days before screening;
• 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.

Exclusion criteria

• 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;
• Long QT, complete left bundle branch block, III degree atrioventricular block;
• Active autoimmune and inflammatory diseases;
• Other malignancies diagnosed within 5 years before the first dose;
• Hypertension poorly controlled by two antihypertensive drugs;
• Patients with poor glycemic control;
• Present with grade ≥2 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;
• Active central nervous system metastasis;
• Patients with a history of allergy to recombinant humanized or human-mouse chimeric antibodies or to any of the excipients of BL-B16D1;
• Received previous organ transplantation or allogeneic hematopoietic stem cell transplantation (Allo-HSCT);
• The cumulative dose of anthracyclines > 360 mg/m2 in previous (new) adjuvant therapy;
• Human immunodeficiency virus antibody positive, active tuberculosis, active hepatitis B virus infection or active hepatitis C virus infection;
• Severe 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;
• Had the following ocular 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.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

N/A

Model

Single group

Masking

Open label

Primary purpose

Treatment

Study locations

China · 1 center

• Sun Yat-sen University Cancer Center — Guangzhou

Identifiers

NCT: NCT06475131 · BL-B16D1-101

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗