Predictive Value of Tumor Microenvironment PET/CT for Response and Prognosis in Aggressive Lymphoma: A Multicenter Study

June 14, 2026 updated by: Cancer Institute and Hospital, Chinese Academy of Medical Sciences

The Predictive Value of Tumor Microenvironment PET/CT Imaging for Treatment Response and Prognosis in Aggressive Lymphoma: A Multicenter Clinical Study

This multicenter study aims to evaluate the predictive value of tumor microenvironment PET/CT imaging for treatment response and prognosis in patients with aggressive lymphoma. Eligible patients with histologically confirmed aggressive lymphoma will undergo FAPI PET/CT imaging, and selected patients who are candidates for immunotherapy will undergo Grazytracer PET/CT imaging. These imaging methods are intended to assess fibroblast activation protein expression and granzyme B activity in lymphoma lesions, reflecting cancer-associated fibroblasts and cytotoxic T-cell activity in the tumor microenvironment. The study will explore optimal imaging assessment criteria and develop clinical-pathological-imaging models to predict treatment response, prognosis, and the relationship between tumor heterogeneity and refractory or relapsed disease.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

94

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • China
    • Chao Yang
      • Beijing, Chao Yang, China, 100021
        • Recruiting
        • National Cancer Center/Cancer Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Histologically confirmed aggressive lymphoma.
  • Baseline PET/CT showing moderate to high FDG uptake in lymphoma lesions.
  • No previous history of malignant tumors.
  • No significant cardiac, hepatic, or renal dysfunction.
  • Expected survival of at least 6 months and ability to complete follow-up.

Exclusion Criteria:

  • Low FDG uptake on baseline PET/CT.
  • Lymphoma lesions have been surgically removed, with no positive lesions available for evaluation.
  • Active or uncontrolled chronic inflammation or infection.
  • Uncontrolled diabetes mellitus.
  • Incomplete clinical data or loss to follow-up.
  • Refusal to sign the informed consent form.
  • Inability to lie supine for 30 minutes.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Tumor Microenvironment PET/CT Imaging
Participants with aggressive lymphoma will undergo tumor microenvironment PET/CT imaging, including FAPI PET/CT. Participants who are candidates for immunotherapy may also undergo Grazytracer PET/CT. Imaging parameters will be analyzed to evaluate their predictive value for treatment response and prognosis.
Drug: Al18F-NOTA-FAPI
Al18F-NOTA-FAPI was injected into the patients before the PET/CT scans
Drug: Al18F-NOTA-grazytracer/68Ga-grazytracer
Al18F-NOTA-grazytracer/68Ga-grazytracer was injected into the patients before the PET/CT scans

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Predictive Performance of FAPI PET/CT for Treatment Response or Disease Progression
Time Frame: Every 3 months after enrollment for up to 2 years
The predictive performance of FAPI PET/CT imaging parameters for treatment response or disease progression in patients with aggressive lymphoma will be evaluated. Imaging parameters, including visual assessment and semi-quantitative parameters such as SUVmax, tumor-to-background ratios, metabolic tumor volume, total lesion glycolysis, and SUV heterogeneity, will be analyzed using receiver operating characteristic curve analysis. The area under the curve, sensitivity, specificity, positive predictive value, and negative predictive value will be calculated.
Every 3 months after enrollment for up to 2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Cancer Institute and Hospital, Chinese Academy of Medical Sciences

Investigators

  • Study Chair: Xuejuan Wang, M.D., Chinese Academy of Medical Sciences

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 11, 2024

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

December 31, 2026

Study Registration Dates

First Submitted

June 14, 2026

First Submitted That Met QC Criteria

June 14, 2026

First Posted (Actual)

June 18, 2026

Study Record Updates

Last Update Posted (Actual)

June 18, 2026

Last Update Submitted That Met QC Criteria

June 14, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • NCC012236

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Aggressive Lymphoma

Clinical Trials on Al18F-NOTA-FAPI

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Hungary

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe