A Study of Lutetium [177Lu]-BL-ARC001 in Patients With Locally Advanced or Metastatic Lung Cancer, Breast Cancer, Head and Neck Squamous Cell Carcinoma and Other Solid Tumors

Official title

A Phase I Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetic Characteristics and Preliminary Efficacy of Lutetium [177Lu]-BL-ARC001 Injection in Patients With Locally Advanced or Metastatic Lung Cancer, Breast Cancer, Head and Neck Squamous Cell Carcinoma and Other Solid Tumors

Overview

This study is an open, multicenter, dose-escalation and cohort-expansion non-randomized phase I clinical trial to evaluate the safety, tolerability, pharmacokinetic characteristics and preliminary efficacy of Lutetium \[177Lu\] BL-ARC001 in patients with locally advanced or metastatic solid tumors.

Detailed description

The study is divided into two stages: the dose-escalation phase (Phase Ia) and the cohort-expansion phase (Phase Ib).

Interventions

• Drug Lutetium [177Lu] BL-ARC001
  Administration by intravenous infusion for a cycle of 6 weeks.

Primary outcome measures

• Phase Ia: Dose limiting toxicity (DLT) [Time frame: Up to 42 days after the first dose]
• Phase Ia: Maximum tolerated dose (MTD) [Time frame: Up to 42 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

• Voluntarily sign the informed consent form and comply with the protocol requirements;
• No gender restrictions;
• Age: ≥18 years and ≤75 years (Phase Ia); ≥18 years (Phase Ib);
• Expected survival time ≥3 months;
• Histologically or cytologically confirmed locally advanced or metastatic solid tumors that have failed standard treatment;
• Agreement to provide archived tumor tissue specimens or fresh tissue samples from primary or metastatic lesions within the past 3 years;
• Must have at least one measurable lesion as defined by RECIST v1.1;
• ECOG performance status score of 0 or 1;
• Toxicity from prior antitumor therapy has recovered to ≤ Grade 1 as defined by NCI-CTCAE v5.0;
• No severe cardiac dysfunction, left ventricular ejection fraction ≥50%;
• Organ function levels must meet the requirements;
• Coagulation function: International Normalized Ratio (INR) ≤1.5, and activated partial thromboplastin time (APTT) ≤1.5 × ULN;
• Urine protein ≤2+ or ≤1000mg/24h;
• For premenopausal women with childbearing potential, a serum pregnancy test must be performed within 7 days before starting treatment, and the result must be negative. Patients must not be breastfeeding; all enrolled patients (regardless of gender) should adopt adequate barrier contraception throughout the treatment cycle and for 6 months after treatment ends.

Exclusion criteria

• Use of chemotherapy, biological therapy, or immunotherapy within 4 weeks or 5 half-lives prior to the first dose;
• History of severe heart disease;
• Prolonged QT interval, complete left bundle branch block, or third-degree atrioventricular block;
• Active autoimmune or inflammatory diseases;
• Diagnosis of other malignancies within 5 years prior to the first dose;
• Hypertension poorly controlled by two antihypertensive medications;
• History of interstitial lung disease (ILD) requiring hormonal therapy, current ILD, or ≥ Grade 2 radiation pneumonitis;
• Symptoms of active central nervous system metastasis;
• History of allergy to recombinant humanized antibodies or human-mouse chimeric antibodies, or allergy to any excipient component of 177Lu-BL-ARC001;
• Previous organ transplantation or allogeneic hematopoietic stem cell transplantation (Allo-HSCT);
• Cumulative dose of anthracyclines >360 mg/m² during prior (neo)adjuvant anthracycline therapy;
• Positive human immunodeficiency virus (HIV) antibody, active tuberculosis, active hepatitis B virus infection, or active hepatitis C virus infection;
• Active infection requiring systemic treatment, such as severe pneumonia, bacteremia, sepsis, etc.;
• Participation in another clinical trial within 4 weeks prior to the first dose;
• Pregnant or lactating women;
• Other conditions deemed by the investigator as unsuitable for participation in this clinical 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

• West China Hospital of Sichuan University — Chengdu

Identifiers

NCT: NCT07274852 · 177Lu-BL-ARC001-101

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗