Trial reportNeuro-oncology2024
Interim FDG-PET improves treatment failure prediction in primary central nervous system lymphoma: An LOC network prospective multicentric study.
Trial report in Neuro-oncology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to 2 registered trials, which are not on this map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Phase III Trial Evaluating Maintenance Treatment Versus Observation in Elderly Patients Suffering From Primary Central Nervous System Lymphoma in Complete Remission After High Dose Methotrexate Based Chemotherapy in First Line
Role of [18F]-FDG Brain PET in Newly Diagnosed Primary Cerebral Lymphoma, in Immunocompetent Patient Older Than 60 Years
Who cites it
4 citing papers in PubMed, 7 citations in OpenAlex.
- Spectrum of Neuroimaging Findings in CNS Lymphoproliferative Disorders.Diagnostics (Basel, Switzerland) · 2026Review
- Translating advances in primary central nervous system lymphoma: from prognostic stratification to treatment innovation.Frontiers in oncology · 2026Review
- Prognostic Value of 18 F-FDG PET in Primary Central Nervous System Lymphoma : Assessing Interim Metabolic Response for Improving Patient Stratification.Clinical nuclear medicine · 2025Article
- Assessing the intracranial metabolic score as a novel prognostic tool in primary CNS lymphoma with end of induction-chemotherapyCancer imaging : the official publication of the International Cancer Imaging Society · 2024Article
Corrections and comments
- Erratum issued
Authors and funding
15 authors at 6 institutions in 1 country.
Funding
Abstract
backgroundThe purpose of our study was to assess the predictive and prognostic role of 2-18F-fluoro-2-deoxy-d-glucose (FDG) positron emission tomography (PET)/MRI during high-dose methotrexate-based chemotherapy (HD-MBC) in de novo primary central nervous system lymphoma (PCNSL) patients aged 60 and above.
methodsThis prospective multicentric ancillary study included 65 immunocompetent patients who received induction HD-MBC as part of the BLOCAGE01 phase III trial. FDG-PET/MRI were acquired at baseline, post 2 cycles (PET/MRI2), and posttreatment (PET/MRI3). FDG-PET response was dichotomized with "positive" indicating persistent tumor uptake higher than the contralateral mirroring brain region. Performances of FDG-PET and International PCNSL Collaborative Group criteria in predicting induction response, progression-free survival (PFS), and overall survival (OS) were compared.
resultsOf the 48 PET2 scans performed, 9 were positive and aligned with a partial response (PR) on MRI2. Among these, 8 (89%) progressed by the end of the induction phase. In contrast, 35/39 (90%) of PET2-negative patients achieved complete response (CR). Among the 18 discordant responses at interim (PETCR/MRIPR), 83% ultimately achieved CR. Eighty-seven percent of the PET2-negative patients were disease free at 6 months versus 11% of the PET2-positive patients (P < .001). The MRI2 response did not significantly differentiate patients based on their PFS, regardless of whether they were in CR or PR. Both PET2 and MRI2 independently predicted OS in multivariate analysis, with PET2 showing a stronger association.
conclusionsOur study highlights the potential of interim FDG-PET for early management of PCNSL patients. Response-driven treatment based on PET2 may guide future clinical trials. TRIAL: LOCALYZE, NCT03582254, ancillary of phase III clinical trial BLOCAGE01, NCT02313389 (Registered July 10, 2018-retrospectively registered) https://clinicaltrials.gov/ct2/show/NCT03582254?term=LOCALYZE&draw=2&rank=1.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.