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Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis
INTRODUCTION: According to the principle, thymomas combined with myasthenia gravis (MG) require surgical treatment. However, patients with non-MG thymoma rarely develop MG and early- or late-onset MG after surgery is called postoperative MG (PMG). Our study used a meta-analysis to examine the incide...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9944936/ https://www.ncbi.nlm.nih.gov/pubmed/36845745 http://dx.doi.org/10.3389/fonc.2023.1061264 |
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author | Tang, Mingbo Shao, Yifeng Dong, Junxue Gao, Xinliang Wei, Shixiong Ma, Jianzun Hong, Yang Li, Zhiqin Bi, Taiyu Yin, Yipeng Zhang, Wenyu Liu, Wei |
author_facet | Tang, Mingbo Shao, Yifeng Dong, Junxue Gao, Xinliang Wei, Shixiong Ma, Jianzun Hong, Yang Li, Zhiqin Bi, Taiyu Yin, Yipeng Zhang, Wenyu Liu, Wei |
author_sort | Tang, Mingbo |
collection | PubMed |
description | INTRODUCTION: According to the principle, thymomas combined with myasthenia gravis (MG) require surgical treatment. However, patients with non-MG thymoma rarely develop MG and early- or late-onset MG after surgery is called postoperative MG (PMG). Our study used a meta-analysis to examine the incidence of PMG and risk factors. METHODS: Relevant studies were searched for in the PubMed, EMBASE, Web of Science, CNKI,and Wanfang databases. Investigations that directly or indirectly analyzed the risk factors for PMG development in patients with non-MG thymoma were included in this study. Furthermore, risk ratios (RR) with 95% confidence intervals (CI) were pooled using meta-analysis, and fixed-effects or random-effects models were used depending on the heterogeneity of the included studies. RESULTS: Thirteen cohorts containing 2,448 patients that met the inclusion criteria were included. Metaanalysis revealed that the incidence of PMG in preoperative patients with non-MG thymoma was 8%. Preoperative seropositive acetylcholine receptor antibody (AChR-Ab) (RR = 5.53, 95% CI 2.36 – 12.96, P<0.001), open thymectomy (RR =1.84, 95% CI 1.39 – 2.43, P<0.001), non-R0 resection (RR = 1.87, 95% CI 1.36 – 2.54, P<0.001), world health organization (WHO) type B (RR =1.80, 95% CI 1.07 – 3.04, P= 0.028), and postoperative inflammation (RR = 1.63, 95% CI 1.26 – 2.12, P<0.001) were the risk factors for PMG in patients with thymoma. Masaoka stage (P = 0.151) and sex (P = 0.777) were not significantly associated with PMG. DISCUSSION: Patients with thymoma but without MG had a high probability of developing PMG. Although the incidence of PMG was very low, thymectomy could not completely prevent the occurrence of MG. Preoperative seropositive AChR-Ab level, open thymectomy, non-R0 resection, WHO type B, and postoperative inflammation were risk factors for PMG. SYSTEMATIC REVIEW REGISTRATION: https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022360002. |
format | Online Article Text |
id | pubmed-9944936 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-99449362023-02-23 Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis Tang, Mingbo Shao, Yifeng Dong, Junxue Gao, Xinliang Wei, Shixiong Ma, Jianzun Hong, Yang Li, Zhiqin Bi, Taiyu Yin, Yipeng Zhang, Wenyu Liu, Wei Front Oncol Oncology INTRODUCTION: According to the principle, thymomas combined with myasthenia gravis (MG) require surgical treatment. However, patients with non-MG thymoma rarely develop MG and early- or late-onset MG after surgery is called postoperative MG (PMG). Our study used a meta-analysis to examine the incidence of PMG and risk factors. METHODS: Relevant studies were searched for in the PubMed, EMBASE, Web of Science, CNKI,and Wanfang databases. Investigations that directly or indirectly analyzed the risk factors for PMG development in patients with non-MG thymoma were included in this study. Furthermore, risk ratios (RR) with 95% confidence intervals (CI) were pooled using meta-analysis, and fixed-effects or random-effects models were used depending on the heterogeneity of the included studies. RESULTS: Thirteen cohorts containing 2,448 patients that met the inclusion criteria were included. Metaanalysis revealed that the incidence of PMG in preoperative patients with non-MG thymoma was 8%. Preoperative seropositive acetylcholine receptor antibody (AChR-Ab) (RR = 5.53, 95% CI 2.36 – 12.96, P<0.001), open thymectomy (RR =1.84, 95% CI 1.39 – 2.43, P<0.001), non-R0 resection (RR = 1.87, 95% CI 1.36 – 2.54, P<0.001), world health organization (WHO) type B (RR =1.80, 95% CI 1.07 – 3.04, P= 0.028), and postoperative inflammation (RR = 1.63, 95% CI 1.26 – 2.12, P<0.001) were the risk factors for PMG in patients with thymoma. Masaoka stage (P = 0.151) and sex (P = 0.777) were not significantly associated with PMG. DISCUSSION: Patients with thymoma but without MG had a high probability of developing PMG. Although the incidence of PMG was very low, thymectomy could not completely prevent the occurrence of MG. Preoperative seropositive AChR-Ab level, open thymectomy, non-R0 resection, WHO type B, and postoperative inflammation were risk factors for PMG. SYSTEMATIC REVIEW REGISTRATION: https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022360002. Frontiers Media S.A. 2023-02-08 /pmc/articles/PMC9944936/ /pubmed/36845745 http://dx.doi.org/10.3389/fonc.2023.1061264 Text en Copyright © 2023 Tang, Shao, Dong, Gao, Wei, Ma, Hong, Li, Bi, Yin, Zhang and Liu https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Oncology Tang, Mingbo Shao, Yifeng Dong, Junxue Gao, Xinliang Wei, Shixiong Ma, Jianzun Hong, Yang Li, Zhiqin Bi, Taiyu Yin, Yipeng Zhang, Wenyu Liu, Wei Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis |
title | Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis |
title_full | Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis |
title_fullStr | Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis |
title_full_unstemmed | Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis |
title_short | Risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: A systematic review and meta-analysis |
title_sort | risk factors for postoperative myasthenia gravis in patients with thymoma without myasthenia gravis: a systematic review and meta-analysis |
topic | Oncology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9944936/ https://www.ncbi.nlm.nih.gov/pubmed/36845745 http://dx.doi.org/10.3389/fonc.2023.1061264 |
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