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Updated: Feb 11, 2026

Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines
Published on: April 21, 2022
LGI1 tumor tissue expression and serum autoantibodies in patients with primary malignant glioma
Emanuela Dazzo1, Elena Pasini2, Sandra Furlan1
1CNR-Neuroscience Institute, Section of Padua, Viale G. Colombo 3, 35121 Padova, Italy.
Objectives:
The Leucine-rich glioma inactivated 1 (LGI1) protein is thought to be implicated in malignant progression of glioma tumors, and mutations in the encoding gene, LGI1, cause autosomal dominant lateral temporal epilepsy, a genetic focal epilepsy syndrome. The aim of this study was to investigate the possible involvement of LGI1 in high-grade glioma-associated epilepsy by analyzing its expression in tumor specimens of patients with and without epilepsy and by searching for LGI1 autoantibodies in the sera these patients.
Patients And Methods:
We examined tumor tissue samples from 24 patients with high-grade gliomas (12 with and 12 without epilepsy) by immunoblot and detected variable amounts of LGI1 in tumor tissues from 9/24 (37%) patients.
Results:
LGI1 was detected in 7/12 (58%) patients with epilepsy and in 2/12 (16%) patients without epilepsy (p = 0.0894; Fisher's exact test). Moreover, testing blood sera of five patients for antibodies against LGI1 revealed LGI1 autoantibodies in two patients, both suffering from epilepsy and expressing LGI1 in tumor tissue.
Conclusion:
Our findings suggest that there may be a preferential expression of LGI1 in high-grade glioma tumors of patients with epilepsy. We also unveil the presence of serum LGI1 autoantibodies in some patients with high-grade gliomas, where they might play an epileptogenic role.
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