Influence of resective extent of epileptogenic tuber on seizure outcome in patients with tuberous sclerosis complex-related epilepsy: A systematic review and meta-analysis.
Seizure(2023)
Abstract
OBJECTIVE:To perform a systematic review and meta-analysis to identify whether tuberectomy and tuberectomy plus are associated with different postoperative seizure outcomes in patients with tuberous sclerosis complex (TSC) -related epilepsy.
METHODS:Electronic databases (PubMed, Embase, Cochrane, Proquest, Web of Science, Scopus, Biosis Previews) were searched without date restriction. Retrospective cohort studies of participants with TSC-associated epilepsy undergoing resective surgery that reported demographics, presurgical evaluation, extent of resection and postoperative seizure outcomes were included. Title, abstract and the full text were checked independently and in duplicate by two reviewers. Disagreements were resolved through discussion. One author extracted data which was verified by a second author using identified common standard in advance, including using a risk of bias tool we agreed on to evaluate study quality.
RESULTS:Five studies, with a total of 327 participants, were included. One hundred and sixty patients received tuberectomy, and 93 of them (58.1%) achieved postoperative seizure freedom, while the other 167 patients underwent tuberectomy plus, and 128 of them (76.6%) achieved seizure freedom after adequate follow-ups (RR=0.72, 95% CI [0.60, 0.87], P<0.05). Subgroup analysis found that 40 of 63 (63.5%) patients after tuberectomy and 66 of 78 (84.6%) patients after tuberectomy plus of a single tuber achieved seizure freedom (RR = 0.71, 95% CI [0.56,0.91], P<0.05). In the multituber subrgroup, 16 of 42 (38.1%) and 21 of 31 (67.7%) patients achieved seizure freedom, after tuberectomy and tuberectomy plus, respectively (RR = 0.57, 95% CI [0.32,1.03], P = 0.06).
CONCLUSIONS:Tuberectomy plus is a more effective treatment than tuberectomy for patients with TSC-related intractable epilepsy.
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