• Chunming He, Tao Long, Huaiyu Zhou, Chuan Zeng, Peng Xiong, Xinyu Qiu, and Haimin Song.
• Department of Neurosurgery, First Affiliated Hospital of Gannan Medical University, Ganzhou City, Jiangxi Province, China.
• World Neurosurg. 2024 Oct 28.

BackgroundNumerous studies have demonstrated a strong association between traumatic brain injury (TBI) and an increased risk of meningioma. However, this correlation remains controversial. This study utilized Mendelian randomization to explore this relationship from the perspective of genetic evidence.MethodsWe employed 6 TBI genome-wide association study datasets from the integrative epidemiology unit genome-wide association study database. Summary statistics for meningioma were sourced from the FinnGen R10 database. We assessed heterogeneity and horizontal pleiotropy within the analyzed data. The primary method was inverse variance weighting (IVW) to investigate the causal relationship between TBI and meningioma, excluding cases with horizontal pleiotropy. Four supplementary analysis methods were also used, with abnormal results excluded based on leave-one-out sensitivity analysis.ResultsAll 6 Mendelian randomization analyses indicated no causal relationship between TBI and meningiomas (focal brain injury IVW P value = 0.98; diffuse brain injury IVW P value = 0.41; TBI without concussion IVW P value = 0.45; intracranial trauma IVW P value = 0.34; traumatic subdural hemorrhage IVW P value = 0.80; traumatic subarachnoid hemorrhage IVW P value = 0.92).ConclusionsThe Mendelian randomization study revealed that TBI does not increase the risk of meningioma based on genetic evidence.Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.

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