Evidence map›Paper›PMID 34625864›Full record

ArticleNeurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics2021

Thymectomy and Risk of Generalization in Patients with Ocular Myasthenia Gravis: A Multicenter Retrospective Cohort Study.

Huanhuan Li, Zhe Ruan, Feng Gao, Hongyu Zhou, Rongjing Guo, Chao Sun, Quan Xu, Qiang Lu, Yongan Zhou, Zhengwei Zhao and 15 more

Erratum issuedOpen access · bronzeAbstract readMulticenter Study
In one paragraph

Article in Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Observational
  4. Ocular myasthenia gravis management.Frontiers in neurology · 2025
    Review
  5. Article
  6. Article
  7. Dynamic nomogram for predicting generalized conversion in adult-onset ocular myasthenia gravis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2023
    Observational
  8. Article
  9. Article
  10. Article
  11. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

25 authors at 7 institutions in 1 country.

Huanhuan Li *Department of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Zhe Ruan *Department of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Feng GaoDepartment of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.
Hongyu ZhouDepartment of Neurology, West China Hospital, Sichuan University, Chengdu, China.
Rongjing GuoDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Chao SunDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Quan XuDepartment of Thoracic Surgery, Jiangxi Provincial People's Hospital Affiliated To Nanchang University, Nanchang, China.
Qiang LuDepartment of Thoracic Surgery, Tangdu Hospital, the Fourth Military Medical University, Xi'an, China.
Yongan ZhouDepartment of Thoracic Surgery, Tangdu Hospital, the Fourth Military Medical University, Xi'an, China.
Zhengwei ZhaoDepartment of Thoracic Surgery, Tangdu Hospital, the Fourth Military Medical University, Xi'an, China.
Liping YuDepartment of Neurology, Xianyang First People's Hospital, Xianyang, China.
Songdi WuDepartment of Neurology, Xi'an No.1 Hospital, Xi'an, China.
Tao LeiDepartment of Neurology, Xi'an Fourth Hospital, Xi'an, China.
Ting GaoDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Yonglan TangDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Chunhong LiDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Feiyan HuoDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Ying ZhuDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Jie SunDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Baoli TangDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Min ZhangDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Yanwu GaoDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Xiaodan LuDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China.
Zhuyi LiDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China. lizhuyiafu@163.com.
Ting ChangDepartment of Neurology, Tangdu Hospital, the Fourth Military Medical University, 569 XinSi Road, Xi'an, 710038, China. changting1981@163.com.ORCID http://orcid.org/0000-0002-7546-8017
Air Force Medical University · CNTang Du Hospital · CNNanchang University · CNSichuan University · CNWuhan No.1 Hospital · CNXian Yang Central Hospital · CNZhengzhou University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aims to investigate the association between thymectomy and the risk of generalization in patients with ocular myasthenia gravis (MG). Data on patients with ocular MG from seven neurological centers in China were retrospectively reviewed. Ocular MG naïve to immunotherapy was categorized according to whether thymectomy was performed (thymectomized group vs. nonsurgical group). Patients in the thymectomized group all underwent surgery within 2 years since ocular symptom onset. The main outcome measure was the generalization. The follow-up period was defined from the date of ocular symptom onset to the date of generalization confirmation, immunotherapy initiation, or last follow-up (defined as 60 months). Of 519 eligible patients (mean [SD] age, 48.7 [15.2] years, 46.6% women), 31 (23.7%) of 131 generalized in the thymectomized group and 122 (31.4%) of 388 did in the nonsurgical group during a median follow-up of 19 months (IQR 8.0-50.0). Thymectomy was independently associated with reduced generalization risk (adjusted HR 0.41, 95% CI 0.25-0.66, P < 0.001). Multivariable stratified analysis also verified this association across the subgroups. Kaplan-Meier curves showed that the 5-year cumulative rate was significantly lower in the thymectomized group than in the nonsurgical group. To conclude, thymectomy may be considered effective in modifying the progression from ocular to generalized MG irrespective of thymoma.

Indexed as

Myasthenia GravisThymomaThymus NeoplasmsFemaleHumansMaleMiddle AgedRetrospective StudiesThymectomyTreatment OutcomeGeneralizationGeneralized myasthenia gravisOcular myasthenia gravisProportional hazards modelThymectomy

Identifiers

PMID34625864
PMCPMC8804035
OpenAlexW3204700302

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Registered trials

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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.