ArticleNeurology2025
Acute Symptomatic Seizures During CAR T-Cell Therapy for Hematologic Malignancies: Tri-Site Mayo Clinic Experience.
Article in Neurology, 2025. 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
BACKGROUND AND
objectivesChimeric antigen receptor T-cell (CAR T-cell) therapy is associated with neurotoxicity, which may include acute symptomatic seizures (ASySs). Specific risk factors and short-term and long-term outcomes of ASyS associated with CAR T-cell therapy have not been well investigated.
methodsThis retrospective cohort study evaluated incidence and risk factors for ASyS during CAR T-cell therapy. We included patients treated at Mayo Clinic in Minnesota, Florida, and Arizona who underwent CAR T-cell therapy for hematologic malignancies from October 2019 to November 2023. Pretreatment demographics, clinical information, type of CAR T-cell therapy, neuroimaging, laboratories during treatment, and clinical features during admission were analyzed. Data on treatment and prevalence of seizures, EEG, and survival at the last follow-up were assessed. T-tests and nonparametric testing were performed on categorical and continuous data, respectively. Multivariable analysis was also performed.
resultsWe included 180 patients (mean age 62.3 years, 57.2% women) with 8 (4.4%) developing ASyS at a mean of 8.0 ± 5.3 days after therapy. Earlier onset of cytotoxic release syndrome (odds ratio [OR] 1.81, 95% CI 0.62-2.99, DISCUSSION: This study suggests a low risk of ASyS because of CAR T-cell therapy, with certain risk factors that may be predictive of ASyS and lack of a definitive and direct association of ASyS with outcomes. The current approach to ASM prophylaxis should be reconsidered when ICANS is encountered. This study is limited by its retrospective nature and the use of ASM prophylaxis in all patients with ICANS, which requires further study to assess its necessity.
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