NCT06690216

Evaluation of [18F]AlF-NOTA-PCP2 PET/CT for PD-L1 Detection in Malignant Tumors

Evaluation of the Value of [18F]AlF-NOTA-PCP2 PET/CT for PD-L1 Detection in Malignant Tumors

• Status: Enrolling By Invitation
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 100 (estimated)
• Sponsor: Man Hu · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This phase I/II clinical trial evaluates the safety, efficacy, and prognostic potential of \[18F\]AlF-NOTA-PCP2 PET/CT imaging in assessing PD-L1 expression in malignant tumors, including glioblastoma, head and neck squamous cell carcinoma, non-small cell lung cancer, and esophageal cancer. The primary aim is to establish the correlation between \[18F\]AlF-NOTA-PCP2 uptake and PD-L1 expression in tumor tissues, while secondary objectives include evaluating its role in predicting clinical outcomes such as progression-free survival (PFS) and overall survival (OS). By providing a non-invasive, quantitative, and reproducible method for assessing PD-L1, this study aims to refine patient stratification and improve the precision of immunotherapy decision-making.

Detailed description

This phase I/II clinical trial is designed to explore the utility of \[18F\]AlF-NOTA-PCP2 PET/CT in evaluating PD-L1 expression and its prognostic implications in patients with malignant tumors (glioblastoma, head and neck squamous cell carcinoma, non-small cell lung cancer, and esophageal cancer). The study involves at least 20 patients (5 per tumor type) who will undergo a pre-treatment PET/CT scan following an intravenous injection of \[18F\]AlF-NOTA-PCP2. The primary endpoints include the safety of the imaging protocol and the correlation between \[18F\]AlF-NOTA-PCP2 uptake (SUV values) and PD-L1 expression determined through immunohistochemistry (IHC). Secondary endpoints explore the dynamic changes in SUV values in patients undergoing multiple scans and their relationship with clinical outcomes. Scientific and Technical Rationale: \[18F\]AlF-NOTA-PCP2 is a novel radiotracer with high specificity for PD-L1, enabling non-invasive imaging of its expression in vivo. This imaging approach complements traditional immunohistochemical methods by offering whole-body assessment, eliminating the need for repeated biopsies, and providing insights into the tumor microenvironment. This study seeks to validate its application in clinical oncology, bridging molecular imaging with biomarker-guided therapeutic strategies. Study Methods: Patients will receive a single intravenous dose of \[18F\]AlF-NOTA-PCP2 (adjusted for body weight), followed by a whole-body PET/CT scan after one hour. Images will be analyzed independently by two experienced nuclear medicine specialists. Tumor biopsies will be collected to measure PD-L1 expression via IHC, and blood samples will be assessed for circulating and exosomal PD-L1 biomarkers. For patients undergoing multiple scans, changes in radiotracer uptake will be tracked to monitor treatment response. Data Analysis: SUV values will be correlated with PD-L1 expression levels, clinical factors (e.g., tumor stage, histology), and patient outcomes (PFS, OS). Statistical analyses, performed using SPSS 29.0, will include primary correlations and secondary evaluations of imaging-based dynamic changes and their relationship with therapeutic efficacy. Significance: This trial will provide critical data on the feasibility of \[18F\]AlF-NOTA-PCP2 PET/CT imaging in clinical oncology. Its potential to stratify patients based on PD-L1 expression and predict therapy response could transform personalized cancer care, optimizing immunotherapy outcomes and minimizing unnecessary treatments. Timeline: Patient enrollment is expected to last 12 months, with an additional 3 months of follow-up for data collection and analysis.

Conditions

• Glioblastoma (GBM)
• Head and Neck Squamous Cell Carcinoma
• Non-Small Cell Lung Cancer
• Esophageal Cancer

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	PET/CT （[18F]AlF-NOTA-PCP2）	This intervention involves the use of \[18F\]AlF-NOTA-PCP2, a radiopharmaceutical agent specifically designed for PET/CT imaging. Patients will receive an intravenous injection of \[18F\]AlF-NOTA-PCP2, followed by whole-body PET/CT scanning one hour later. The primary purpose of this intervention is to assess PD-L1 expression in malignant tumors, including glioblastoma, head and neck squamous cell carcinoma, non-small cell lung cancer, and esophageal cancer, before the initiation of treatment. This imaging technique offers a non-invasive, repeatable, and comprehensive method to monitor PD-L1 status, in contrast to traditional tissue biopsy, which is invasive and limited to a single time point.
DIAGNOSTIC_TEST	[18F]AlF-NOTA-PCP2 PET/CT Imaging for PD-L1 Expression in Malignant Tumors	This intervention involves the use of \[18F\]AlF-NOTA-PCP2, a radiopharmaceutical agent specifically designed for PET/CT imaging. Patients will receive an intravenous injection of \[18F\]AlF-NOTA-PCP2, followed by whole-body PET/CT scanning one hour later. The primary purpose of this intervention is to assess PD-L1 expression in malignant tumors, including glioblastoma, head and neck squamous cell carcinoma, non-small cell lung cancer, and esophageal cancer, before the initiation of treatment. This imaging technique offers a non-invasive, repeatable, and comprehensive method to monitor PD-L1 status, in contrast to traditional tissue biopsy, which is invasive and limited to a single time point.

Timeline

• Start date: 2024-03-30
• Primary completion: 2025-10-31
• Completion: 2026-10-31
• First posted: 2024-11-15
• Last updated: 2025-03-30

Locations

1 site across 1 country: China