A Study of BL-M07D1 Combination Therapy in Patients With Unresectable Locally Advanced or Metastatic HER2-positive Gastric or Gastroesophageal Junction Adenocarcinoma

A Phase II Clinical Study to Evaluate the Efficacy and Safety of BL-M07D1 Combination Therapy in Patients With Unresectable Locally Advanced or Metastatic HER2-positive Gastric or Gastroesophageal Junction Adenocarcinoma

This study is a multicenter, open-label, phase II clinical study to explore the safety and efficacy of BL-M07D1+PD-1 monoclonal antibody in patients with unresectable locally advanced or metastatic HER2-positive gastric or gastroesophageal junction adenocarcinoma.

Study Overview

• Status: Recruiting
• Conditions: HER2-positive Gastric or Gastroesophageal Junction Adenocarcinoma
• Intervention / Treatment: Drug: BL-M07D1; Drug: PD-1 monoclonal antibody

• Study Type: Interventional
• Enrollment (Estimated): 40
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Sa Xiao, PHD; Phone Number: 15013238943; Email: xiaosa@baili-pharm.com

Study Locations

• China
  • Shanghai
    • Shanghai, Shanghai, China
      • Recruiting
      • Fudan University Shanghai Cancer Center
      • Contact: Weijian Guo

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Voluntarily sign the informed consent and follow the requirements of the protocol;
2. No gender limit;
3. Age ≥18 years old and ≤75 years old at the time of signing the informed consent;
4. Expected survival time ≥3 months;
5. Patients with HER2-positive gastric or gastroesophageal junction adenocarcinoma confirmed by pathology;
6. Patients provided tumor tissue specimens as far as possible for the detection of biomarkers such as HER2 and PD-L1 for exploratory retrospective analysis;
7. Must have at least one measurable lesion according to RECIST v1.1 definition;
8. ECOG 0 or 1;
9. Toxicity of previous antineoplastic therapy has returned to ≤ grade 1 defined by NCI-CTCAE v5.0;
10. No severe cardiac dysfunction, left ventricular ejection fraction ≥50%;
11. Blood transfusion is not allowed within 14 days before the first use of study drugs, and the use of colony-stimulating factors is not allowed, and the organ function level must meet the requirements;
12. Coagulation function: international normalized ratio (INR) ≤1.5 and activated partial thromboplastin time (APTT) ≤1.5×ULN;
13. Urine protein ≤2+ or ≤1000mg/24h;
14. Female subjects of childbearing potential, or male subjects with a fertile partner, had to use highly effective contraception from 7 days before the first dose until 7 months after the dose. Female subjects of childbearing potential had to have a negative serum pregnancy test within 7 days before the first dose.

Exclusion Criteria:

1. Anti-tumor therapy such as chemotherapy, biological therapy, and immunotherapy had been used within 4 weeks or 5 half-lives before the first dose. Oral drugs such as fluorouracil;
2. Prior ADC drug therapy with camptothecin derivative as toxin;
3. The history of severe cardiovascular and cerebrovascular diseases in the past six months;
4. Serious impairment of lung function due to pulmonary diseases;
5. QT prolongation, complete left bundle branch block, III degree atrioventricular block, frequent and uncontrollable arrhythmia;
6. Other primary malignancies diagnosed within 5 years before the first dose;
7. Poorly controlled hypertension;
8. A history of ILD requiring steroid therapy, current ILD/interstitial pneumonia or suspected to have such a condition during screening;
9. Patients with active central nervous system metastases;
10. Patients who are allergic to any excipients of the trial drug;
11. Systemic corticosteroids or immunosuppressive agents are required within 2 weeks before study dosing;
12. Patients with massive or symptomatic effusions or poorly controlled effusions;
13. Severe systemic infection within 4 weeks before screening;
14. Active autoimmune and inflammatory diseases;
15. Human immunodeficiency virus antibody positive, active hepatitis B virus infection or hepatitis C virus infection;
16. Previous history of allogeneic stem cell, bone marrow or organ transplantation;
17. A history of severe neurological or psychiatric illness;
18. Pregnant or lactating women;
19. The presence of other serious physical or laboratory abnormalities or poor compliance may increase the risk of participating in the study risk, or interference with the results of the study, and patients who were deemed by the investigators to be unsuitable for participation in the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Study treatment; Participants received BL-M07D1+PD-1 monoclonal antibody in the first cycle (3 weeks). Participants who had a clinical benefit could receive additional cycles of additional treatment. Administration will be discontinued because of disease progression or intolerable toxicity or for other reasons.	Drug: BL-M07D1; Administration by intravenous infusion for a cycle of 3 weeks.; Drug: PD-1 monoclonal antibody; Administration by intravenous infusion for a cycle of 3 weeks.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
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.	Up to approximately 24 months
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-M07D1.	Up to approximately 24 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
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]).	Up to approximately 24 months
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-M07D1. The type, frequency and severity of TEAE will be evaluated during the treatment of BL-M07D1.	Up to approximately 24 months
Progression-free Survival (PFS)	The PFS is defined as the time from the participant's first dose of BL-M07D1 to the first date of either disease progression or death, whichever occurs first.	Up to approximately 24 months
Duration of Response (DOR)	he 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.	Up to approximately 24 months

Collaborators and Investigators

• Sponsor: Sichuan Baili Pharmaceutical Co., Ltd.
• Collaborators: Baili-Bio (Chengdu) Pharmaceutical Co., Ltd.
• Investigators: Principal Investigator: Weijian Guo, Fudan University

Study record dates

Study Major Dates

• Study Start (Actual): December 24, 2024
• Primary Completion (Estimated): October 1, 2026
• Study Completion (Estimated): October 1, 2026

Study Registration Dates

• First Submitted: May 16, 2024
• First Submitted That Met QC Criteria: May 16, 2024
• First Posted (Actual): May 21, 2024

Study Record Updates

• Last Update Posted (Actual): August 6, 2025
• Last Update Submitted That Met QC Criteria: August 1, 2025
• Last Verified: August 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Neoplasms by Histologic Type; Gastrointestinal Neoplasms; Digestive System Neoplasms; Digestive System Diseases; Gastrointestinal Diseases; Head and Neck Neoplasms; Neoplasms, Glandular and Epithelial; Esophageal Diseases; Carcinoma; Esophageal Neoplasms; Adenocarcinoma; Immunologic Factors; Physiological Effects of Drugs; Antibodies; Antibodies, Monoclonal
• Other Study ID Numbers: BL-M07D1-206

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No