Safety Study of 177Lu-Anti-ED-B mAbs SPECT Imaging in Patients With ED-B Positive Solid Tumors

Study Overview
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Brief Summary
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This is a single arm study to evaluate the safety and biodistribution of 177Lu-labeled anti-ED-B mAbs SPECT imaging in patients with ED-B positive solid tumors.

Detailed Description
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After being fully informed about the study and potential risks, all patients giving written informed consent will be evaluated to determine eligibility for study entry. Patients will receive an injection of 177Lu-labeled anti-ED-B mAbs and will undergo SPECT/CT scanning to determine uptake of 177Lu-labeled anti-ED-B mAbs in tumor lesions and normal tissues and organs.

Official Title
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Safety Study of 177Lu-Anti-ED-B mAbs SPECT Imaging in Patients With ED-B Positive Solid Tumors

Conditions
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Solid Tumor, Adult

Intervention / Treatment
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* Drug: 177Lu-B5-IgG4


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients voluntarily signed informed consent, and be able to complete the trial according to the requirement of the scheme; Aged 18-75, male or female; Patients diagnosed with solid tumors confirmed by histopathology ; Patients with biopsy-proven fibronectin ED-B positive; At least one measurable solid lesions has been examined by 18F-FDG PET/CT (RECIST1.1 standard); ECOG score 0 2; ALT, AST shall not exceed 3 times of the normal upper limit; Bun, Cr not exceed 1.5 times of the normal upper limit. Other routine examinations are within the normal range or considered acceptable by the researchers. Exclusion Criteria: Recovery from major trauma (including surgery) within 4 weeks prior to study treatment; Patients with systemic or locally severe infections, or other serious coexisting diseases; Patients with abnormal immune function or who have recently used immunosuppressive or potentiating agents including various vaccines; Patients with autoimmune diseases, including rheumatoid arthritis; Inadequate control of arrhythmias, including atrial fibrillation; Uncontrolled hypertension; Patients with allergies or allergies to any component of the imaging agent or antibody; Patients who cannot undergo PET/CT imaging scan; Syphilis, HBV, HCV, or HIV positive subjects; Male and female subjects of reproductive age cannot take effective contraceptive measures; Pregnant or lactating women; Patients with a history of mental illness or related conditions; Other subjects considered unsuitable by researchers.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 177Lu-Anti-ED-B mAbs<br>Patients will receive a tracer (5 mg, IV) dose of 177Lu (10 mCi) labeled anti-ED-B mAbs(177Lu-B5-IgG4) | Drug: 177Lu-B5-IgG4<br>* 177Lu-B5-IgG4 injection followed by SPECT scan<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Evaluation of tissue distribution of 177Lu-Anti-ED-B mAbs(B5-IgG4) | Biodistribution of 177Lu-Anti-ED-B mAbs(B5-IgG4) evaluated by radioactive uptake values (standardized uptake values, SUVs) in various organs during repeated 177Lu-SPECT scans will be reported. | 1 year | 
| Dosimetry estimates of 177Lu-Anti-ED-B mAbs(B5-IgG4) | Absorbed dose (radioactive uptake) estimates for different organs and tissues calculated with the AUCs and the OLINDA/EXM dosimetry program will be obtained and reported. | 1 year | 
| Incidence of Treatment-Emergent Adverse Events | Safety will be assessed by evaluation of incidence of adverse events. | 1 year |