ArticleEuropean journal of nuclear medicine and molecular imaging2026
Prognostic role of FDG-PET in patients with relapsed/refractory large B-cell lymphoma treated with CD3-CD20 directed bispecific antibodies: a multicentric analysis.
Article in European journal of nuclear medicine and molecular imaging, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThe clinical use of CD3-CD20-directed bispecific antibodies (BsAbs) has significantly improved outcomes of patients with relapsed/refractory LBCL. However, up to 50% of patients relapse. This study evaluated the prognostic value of longitudinal FDG-PET parameters.
methods58 patients with baseline PET and 45 (78%) with first PET after BsAb initiation were included. Standard PET metrics and Deauville score (DS) were recorded, with percent changes at follow-up defined as ΔPET parameters. Prognostic impact of DS and semi-quantitative PET metrics were determined for PFS/OS.
resultsAt baseline an whole-body MTV > 504.7 cm³ was associated with shorter median PFS of 1 vs. 3 months (HR = 5.6, P = 0.00025; C-index = 0.94). At first follow-up, those with DS4-5 exhibited significantly higher risk of progression (HR = 11.42, P = 0.0182; C-index = 0.97) and shorter survival (HR = 7.07, P = 0.059; C-index = 0.72). Non-achievement of ≥ 75.5% SUVmean reduction significantly increased risk for PFS (HR = 7.65; p = 0.0065; C-index = 0.92) and OS events (HR = 11.1; p = 0.001; C-index = 0.95).
conclusionIn summary, longitudinal semi-quantitative PET assessment identified patients at high risk of relapse and may enhance risk stratification and personalized management in BsAb-treated patients.
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