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Impact of timing of antiseizure medication withdrawal on seizure recurrence in glioma patients: a retrospective observational study

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JOURNAL OF NEURO-ONCOLOGY
卷 164, 期 3, 页码 545-555

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SPRINGER
DOI: 10.1007/s11060-023-04450-z

关键词

Glioma; Brain tumor; Antiepileptic drug; Seizure; Treatment failure

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The risk of seizure recurrence is relatively similar between glioma patients with short-term, medium-term, and long-term seizure freedom after completing antitumor treatment.
Background Withdrawal of antiseizure medication treatment (ASM) can be considered after completion of antitumour treatment in glioma patients who no longer suffer from seizures. We compared the risk for recurrent seizures after ASM withdrawal between patients with short-term, medium-term versus long-term seizure freedom after antitumour treatment.Methods In this retrospective observational study, the primary outcome was time to recurrent seizure, from the starting date of no ASM treatment up to 36 months follow-up. Cox proportional hazards models were used to study the effect of risk factors on time to recurrent seizure. Stratification was done with information known at baseline. Short-term seizure freedom was defined as >= 3 months, but < 12 months; medium-term as 12-24 months; and long-term as >= 24 months seizure freedom from the date of last antitumour treatment.Results This study comprised of 109 patients; 31% (34/109) were in the short-term, 29% (32/109) in the medium-term, and 39% (43/109) in the long-term group. A recurrent seizure was experienced by 47% (16/34) of the patients in the short-term, 31% (10/32) in the medium-term, and 44% (19/43) in the long-term group. Seizure recurrence risk was similar between patients in the short-term group as compared to the medium-term (cause-specific adjusted hazard ratio [aHR] = 0.65 [95%CI = 0.29-1.46]) and long-term group (cause-specific aHR = 1.04 [95%CI = 0.52-2.09]).Conclusions Seizure recurrence risk is relatively similar between patients with short-term, medium-term, and long-term seizure freedom after completion of antitumour treatment.

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