CXCR4 PET/MRI Targeted Imaging for Grading Diagnosis, Molecular Typing, and Prognostic Evaluation of Brain Glioma

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CXCR4 PET/MRI Targeted Imaging for Grading Diagnosis, Molecular Typing, and Prognostic Evaluation of Brain Glioma

Study Purpose

This project intends to evaluate the role of C-X-C chemokine receptor type 4 (CXCR4) targeted PET/MRI integrated imaging in the grading and molecular typing of brain gliomas, using primary glioma patients as the research subjects and post-operative histopathological analysis as the reference, and to establish an evaluation model for the prognosis of primary glioma patients.

Recruitment Criteria

Accepts Healthy Volunteers Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms	No
Study Type An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes. An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes. Searching Both is inclusive of interventional and observational studies.	Observational [Patient Registry]
Eligible Ages	18 Years and Over
Gender	All

More Inclusion & Exclusion Criteria

Inclusion Criteria:

1. Patients diagnosed with primary glioma based on clinical, imaging, and histopathological criteria; 2. The patient is at least 18 years old; 3. Participate in CXCR4 PET/MRI imaging within 15 days before surgery; 4. Surgical resection of glioma lesion tissue can be used for pathological analysis; 5. The patient voluntarily participates and signs the informed consent form.

Exclusion Criteria:

1. Pregnant or breastfeeding patients; 2. The image quality of the imaging is poor and cannot be used for diagnosis and evaluation; 3. Molecular typing was not determined by histologic examination; 4. patients with claustrophobia; 5. Patients who are allergic to radioactive tracers and MRI contrast agents, and patients with renal insufficiency.

Trial Details

Trial ID: This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.	NCT06234319
Phase Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans. Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data. Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs. Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.
Lead Sponsor The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.	Xiao Chen
Principal Investigator The person who is responsible for the scientific and technical direction of the entire clinical study.	Chen Xiao, Ph.D
Principal Investigator Affiliation	Daping Hospital, Army Medical University
Agency Class Category of organization(s) involved as sponsor (and collaborator) supporting the trial.	Other
Overall Status	Recruiting
Countries	China
Conditions The disease, disorder, syndrome, illness, or injury that is being studied.	Glioma

Additional Details

1. PET/MRI Scan: Image acquisition was completed 15 days before surgery. CXCR4 contrast agent was injected at 6.5 MBq/kg based on body mass, with no drug extravasation, and imaging was performed after 60 minutes of quiet rest. All subjects were scanned in a supine position on a single bed of the Signa™ 3.0T scanner (GE Healthcare Systems), using a 3.0T gem HNU head coil with a scanning field of view focused on the head. PET acquisition lasted for 20 minutes and was reconstructed using OSEM. Simultaneous MRI acquisition included MR-based attenuation correction (MRAC)

- zero echo time pulse sequence (ZTE), as well as structural and functional MRI sequences (T1WI, T2WI, FLAIR, DWI, MRS, DSC, T1-CE).

Image fusion was performed on a GE post-processing workstation. 2. Image Analysis and Observation Indicators: PET/MRI images were independently reviewed and processed by two experienced neuroradiologists. Using IKT-SNAP software, target lesion VOIs were outlined based on FLAIR and T1-CE sequences. VOI delineation on the FLAIR sequence included solid tumor components, necrotic areas, and surrounding abnormal FLAIR signal regions. VOI delineation on the T1-CE sequence included enhanced solid components, non-enhanced solid components, and necrotic areas. MRI parameters (diffusion-weighted imaging parameters: ADC; perfusion imaging parameters: CBF, CBV, MTT, TTP; spectroscopic parameters: NAA, Cho, Cr, Lac, NAA/Cr, Cho/Cr) and PET parameters (SUVmax, SUVmean, SUVpeak, CXCR4 metabolic volume, TBR) were measured throughout the tumor and corresponding regions. 3. Pathological Analysis: Slices containing no less than 25% tumor tissue were used, with each slice having a thickness of 4um. HE, CD34, and CXCR4 immunohistochemical staining were performed separately. Two senior pathologists reviewed the slides using a double-blind method. IDH mutation status and 1p/19q deletion status were determined by the pathology department.

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