PET Image Exploration of 89Zr-labeled Antibody Fragments Targeting HER2 in Patients With Malignant Tumors

NCT07023848 | Enrolling By Invitation Early Phase 1

• 1 other identifier: LS2024548
• Study Type: interventional
• Target: 10
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to develop and clinically evaluate 89Zr-labeled HER2-targeted antibody fragments in diagnosis and screening of HER2-positive cancer patients.

Conditions

Breast Cancer; Gastric Cancer (GC); Urothelial Carcinoma (UC)

Keywords

breast cancer; Gastric Cancer (GC); Urothelial carcinoma (UC); HER2; PET/CT; 89Zr

Outcome Measures

Primary Outcomes (2)

• Tumor Uptake Value (SUVmax) of HER2-Targeted PET/CT Compared with 18F-FDG PET/CT

  The maximum standardized uptake value (SUVmax) of identified lesions on HER2-targeted PET/CT using 89Zr-LNCab103 and 89Zr-LNCab104 will be measured and compared with the SUVmax of lesions detected on 18F-FDG PET/CT imaging in the same patients. Units of Measure: SUVmax (unitless)

  Day 1 post-injection

• Number of Lesions Detected by HER2-Targeted PET/CT Compared with 18F-FDG PET/CT

  The number of lesions detected by HER2-targeted PET/CT using 89Zr-labeled antibodies will be recorded and compared to the number of lesions detected by 18F-FDG PET/CT imaging in the same patient population. Units of Measure: Number of lesions

  Day 1 post-injection

Secondary Outcomes (1)

• Biodistribution of 89Zr-Labeled HER2-Targeted Antibodies in Normal Organs

  Day 1 post-injection

Study Arms (3)

89Zr-LNCab103

EXPERIMENTAL

89Zr-LNCab103 injection (1-3mCi) was injected intravenously for 45-60s.

Drug: 89Zr-LNCab103; Drug: 18F-FDG

89Zr-LNCab104

EXPERIMENTAL

89Zr-LNCab104 injection (1-3mCi) was injected intravenously for 45-60s.

Drug: 89Zr-LNCab104; Drug: 18F-FDG

18F-FDG

ACTIVE COMPARATOR

The corresponding patients underwent HER2 PET/CT examination within one week before and after routine 18F-FDG PET/CT imaging (control examination). PET/CT whole body scan was performed 45 min-1 h after intravenous injection of the developer, and the image processing was as usual.

Drug: 89Zr-LNCab104; Drug: 89Zr-LNCab103

Interventions

89Zr-LNCab104 DRUG

89Zr-LNCab104 is administered through a superficial dorsal vein, and the patient is given a dose of about 1-3 mCi

18F-FDG; 89Zr-LNCab104

89Zr-LNCab103 DRUG

89Zr-LNCab103 is administered through a superficial dorsal vein, and the patient is given a dose of about 1-3 mCi

18F-FDG; 89Zr-LNCab103

18F-FDG DRUG

18F-FDG is administered through a superficial dorsal vein, and the patient is given a dose of about 0.1-0.15mCi/kg.

89Zr-LNCab103; 89Zr-LNCab104

Eligibility Criteria

• Age: 18 Years - 75 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Subjects voluntarily signed the informed consent form and was able to complete the trial according to the protocol requirements ;
• years old, male or female ;
• Clinical diagnosed with gastric cancer, breast cancer, urothelial carcinoma, diagnostic criteria refer to biopsy, and HER2 immunohistochemistry result is positive ;
• Presence of at least one measurable lesion in the subject's body, which can be accurately and continuously measured by the modified RECIST criteria (version 1.1) ;
• ECOG score of 0-3 ;
• Complete blood count, coagulation function and liver and kidney function meet the following criteria (no blood transfusion, no use of hematopoietic stimulating factor drugs and no use of liver protection drugs within 14 days before administration): a) Blood routine: white blood cell count (WBC) ≥ 2.5×109/L or neutrophil count (ANC) ≥1.5×109/L, platelet count (PLT) ≥ 100×109/L, hemoglobin ≥ 90 g/L; b) Coagulation function: prothrombin time (PT) or activated partial thromboplastin time (aPTT) ≤1.5×ULN (limited to patients who are not receiving anticoagulant therapy; Patients receiving anticoagulant therapy should be on a stable dose of anticoagulant); c) Liver function: total bilirubin ≤ 1.5× ULN, ALT/AST ≤ 2.5× ULN, ALP ≤ 2.5×ULN; d) Renal function: urea (UREA) ≤ 1.5×ULN, serum creatinine ≤ 1.5× ULN, creatinine clearance ≥ 50 mL/min (Cockcroft-Gault formula) ;
• Female subjects of childbearing potential must have a negative pregnancy test ;
• Female subjects of childbearing potential as well as male subjects of childbearing potential must agree to use effective contraception or restrict sexual behavior for the duration of the study ;

You may not qualify if:

• Those who are not suitable for PET/CT examination or cannot complete PET/CT examination for special reasons, including but not limited to claustrophobia, radiophobia, etc ;
• Those who cannot tolerate intravenous administration (such as history of needle sickness and blood sickness) ;
• Known allergy to chimeric or human antibodies or fusion proteins, or other excipients
• Presence of any of the following: a) brain metastases (except for primary or metastatic brain tumors that are asymptomatic and do not require treatment); b) carcinomatous meningitis; c) diabetes mellitus with poor glycemic control; d) Myocardial infarction within 6 months prior to screening; e) unstable angina; f) Have a previous uncontrollable cardiac arrhythmia or are currently at high risk; g) Prior coronary artery bypass grafting; h) Cerebrovascular accident within 6 months prior to screening; i) congestive heart failure (cardiac function class III-IV); j) pulmonary embolism; k) deep vein thrombosis) concomitant infection requiring intravenous antibiotic treatment within 2 weeks prior to screening; m) History of immunosuppressant therapy after organ transplantation ;
• Those who have had or are currently concomitant with primary central nervous system tumors ;
• Those with a history of acute or subacute intestinal obstruction, or inflammatory bowel disease ;
• Toxicity from prior anticancer therapy has not recovered to grade 0 or 1 (CTCAE version 5.0), with the exception of alopecia ;
• Presence of active autoimmune disease, or history of autoimmune disease requiring treatment with systemic hormones and/or immunosuppressants, or syndrome requiring systemic steroids or immunosuppressive medications;
• Received or planned to receive immune checkpoint blockade therapy, including anti-CTLA-4, anti-PD-1 or anti-PD-L1 therapeutic antibodies, within 1 year prior to screening, prior to completion of the study imaging procedure, etc ;
• Any psychiatric illness (e.g., alcohol or drug abuse, dementia, or altered mental status), or any other condition that affects study compliance, impairs the patient's ability to understand informed consent, or in the opinion of the investigator, would cause the patient to be unable to participate in the study or interfere with the interpretation of the study results ;
• Those who have participated in clinical trials of radiopharmaceuticals within 1 month prior to screening ;
• Drugs/clinical operators who have been evaluated by the investigator within 1 month prior to screening to affect the uptake of 89Zr-LNCab103, 89Zr-LNCab104 ;
• Patients who did not meet the requirements as assessed by the investigator.

Sponsors & Collaborators

• Affiliated Hospital of Jiangnan University: lead

Study Sites (1)

Affiliated Hospital of Jiangnan University

Wuxi, Jiangsu, 214000, China

Location

MeSH Terms

Conditions

Breast Neoplasms; Stomach Neoplasms; Carcinoma, Transitional Cell

Interventions

Fluorodeoxyglucose F18

Condition Hierarchy (Ancestors)

Neoplasms by Site; Neoplasms; Breast Diseases; Skin Diseases; Skin and Connective Tissue Diseases; Gastrointestinal Neoplasms; Digestive System Neoplasms; Digestive System Diseases; Gastrointestinal Diseases; Stomach Diseases; Carcinoma; Neoplasms, Glandular and Epithelial; Neoplasms by Histologic Type

Intervention Hierarchy (Ancestors)

Deoxyglucose; Deoxy Sugars; Carbohydrates

Study Design

• Study Type: interventional
• Phase: early phase 1
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: DIAGNOSTIC
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Director

Study Record Dates

• First Submitted: May 11, 2025
• First Posted: June 17, 2025
• Study Start: July 1, 2025
• Primary Completion (Estimated): July 7, 2026
• Study Completion (Estimated): December 1, 2026
• Last Updated: June 17, 2025

Record last verified: 2025-02

Locations

CN (1)