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NCT05390814: FLUDALOC

[18F]-Fludarabine PET/MRI in Primary Central Nervous System Lymphoma

Completed Phase 1 Last updated 22 August 2025
What this trial tests

Phase 1 trial testing PET-MRI in Primary Central Nervous System Lymphoma in 10 participants. Completed in 5 December 2024.

Timeline
18 December 2023
Primary endpoint
5 December 2024
5 December 2024

Quick facts

Lead sponsorAssistance Publique - Hôpitaux de Paris
PhasePhase 1
StatusCompleted
Study typeINTERVENTIONAL
Allocationna
Designsingle group
Maskingnone
Primary purposediagnostic
Enrollment10
Start date18 December 2023
Primary completion5 December 2024
Estimated completion5 December 2024
Sites1 location across France

Drugs / interventions tested

Conditions studied

Sponsor

Assistance Publique - Hôpitaux de Paris — full company profile →

Who can join

18 and older, any sex, with Primary Central Nervous System Lymphoma. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Primary central nervous system (CNS) lymphomas represent 5% of primary brain tumors. More than 90% of them are diffuse large B-cell lymphomas. \[18F\]-Fluorodeoxyglucose positron emission tomography (PET-\[18F\]-FDG) is the gold standard for imaging systemic lymphomas, but its application in primary CNS lymphoma is compromised by the limited specificity of brain fixations and the high uptake of \[18F\]-FDG in healthy brain tissue. \[18F\]-Fludarabine is a new radiopharmaceutical developed for PET imaging of lymphomas. Preclinical studies indicate a restricted binding specificity to lymphoid tissue compared to \[18F\]-FDG and an ability to detect residual lymphoma disease after treatment. A pilot study in humans shows good agreement of its binding with tumor sites in systemic lymphoma and superior tumor contrast to \[18F\]-FDG. Finally, a recent preclinical study shows a binding ratio in brain lymphoma 3 times higher than that of healthy brain tissue in mouse models of primary CNS lymphoma, whereas in mouse models of high-grade glial tumors, the binding level is very low, comparable to that of healthy tissue (background). Investigators hypothesize that \[18F\]-Fludarabine could be the radiopharmaceutical of choice for the diagnosis and monitoring of primary CNS lymphomas in PET. The main objective of the study is to characterize the cerebral distribution and \[18F\]-Fludarabine uptake in newly-diagnosed primary CNS lymphomas before surgery, chemotherapy or radiotherapy, using PET-MR imaging.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

  1. Recent Updates of PET in Lymphoma: FDG and Beyond.
    Kim SY, Chung HW, So Y, Lee MH, et al · · 2024 · cited 2× · PMID 39595051 · DOI 10.3390/biomedicines12112485

Verify or expand the search:

Other trials of PET-MRI

Trials testing the same drug.

Other recruiting trials for Primary Central Nervous System Lymphoma

Currently open trials in the same condition.

Other Assistance Publique - Hôpitaux de Paris trials

Trials by the same sponsor.

Verify against primary sources

Data sources for this page

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing