Evidence map›Paper›PMID 36929636›Full record

SynthesisBrain and behavior2023

Long-term follow-up seizure outcomes after corpus callosotomy: A systematic review with meta-analysis.

Xiaolong Wu, Siqi Ou, Huaqiang Zhang, Yuhang Zhen, Yinchun Huang, Penghu Wei, Yongzhi Shan

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Brain and behavior, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Beyond seizures: understanding adaptive functioning in drug-resistant epilepsy in patients undergoing palliative surgery.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2026
    Observational
  3. Review
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  5. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 2 countries.

Xiaolong WuDepartment of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.
Siqi OuDepartment of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.
Huaqiang ZhangDepartment of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.
Yuhang ZhenDepartment of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.
Yinchun HuangDepartment of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.
Penghu WeiDepartment of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.
Yongzhi ShanDepartment of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.ORCID 0000-0001-5510-1026
Capital Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCorpus callosotomy (CC) is appropriate for patients with seizures of a bilateral or diffuse origin, or those with seizures of a unilateral origin with rapid spread to the contralateral cerebral hemisphere. The efficiency of CC in patients with drug-resistant epilepsy is a long-term concern because most articles reporting the surgical results of CC arise from small case series, and the durations of follow-up vary.

methodsPubMed, Embase, Cochrane Library, and Web of Science were searched to identify papers published before November 8, 2021. The systematic review was completed following PRISMA guidelines. Outcomes were analyzed by meta-analysis of the proportions.

resultsA total of 1644 patients with drug-resistant epilepsy (49 retrospective or prospective case series studies) underwent CC, and the follow-up time of all patients was at least 1 year. The rate of complete seizure freedom (SF) was 12.38% (95% confidence interval [CI], 8.17%-17.21%). Meanwhile, the rate of complete SF from drop attacks was 61.86% (95% CI, 51.87%-71.41%). The rates of complete SF after total corpus callosotomy (TCC) and anterior corpus callosotomy (ACC) were 11.41% (95% CI, 5.33%-18.91%) and 6.75% (95% CI, 2.76%-11.85%), respectively. Additionally, the rate of complete SF from drop attacks after TCC was significantly higher than that after ACC (71.52%, 95% CI, 54.22%-86.35% vs. 57.11%, 95% CI, 42.17%-71.49%). The quality of evidence for the three outcomes by GRADE assessment was low to moderate.

conclusionThere was no significant difference in the rate of complete SF between TCC and ACC. TCC had a significantly higher rate of complete SF from drop attacks than did ACC. Furthermore, CC for the treatment of drug-resistant epilepsy remains an important problem for further investigation because there are no universally accepted standardized guidelines for the extent of CC and its benefit to patients. In future research, we will focus on this issue.

Indexed as

Corpus CallosumDrug Resistant EpilepsyFollow-Up StudiesHumansRetrospective StudiesSeizuresSyncopeTreatment Outcomecorpus callosotomydrop attacksdrug-resistant epilepsyseizure freedom

Identifiers

PMID36929636
PMCPMC10097058
OpenAlexW4327675438

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.