ArticleThe journal of pathology. Clinical research2026
MET fusions and splicing variants in glioma: a landscape integrating clinical, pathological, and survival features.
Article in The journal of pathology. Clinical research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- MET-associated immune prognostic signature predicts survival and guides personalized therapy in glioma.Acta neuropathologica communications · 2026Article
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12 authors.
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Abstract
MET alterations, including MET fusions and splicing variants (F/SVs), are linked to glioma progression, but the clinical features remain underexplored since the 2021 WHO classification of tumors of the CNS. We aimed to systematically depict the MET F/SVs and patient characteristics in a multicenter cohort focusing on clinical, pathological, and survival features. We studied data from 1,041 patients with MET F/SVs data from the public Chinese Glioma Genome Atlas database and the TruSight Tumor 170 study. Clinical outcomes were evaluated based on the RANO criteria. We used chi-square and Fisher's exact tests for variable analysis. Kaplan-Meier analysis was used to assess survival trends, while univariate and multivariate analyses revealed the prognostic value of MET F/SVs. Immunohistochemical staining was performed to demonstrate the MET expression level. Among the 1,041 patients, 49 patients had F/SVs (4.70%), and 23 had ZM fusion (PTPRZ1-MET fusion gene; 2.21%). Among the 67 recurrent grade 4 astrocytomas, the proportions of F/SVs (11.94%, n = 8) and ZMs (5.97%, n = 4) were the highest. MET F/SVs were significantly associated with malignant clinical outcomes in the IDH-mutant astrocytoma cohort, with a frequency of 5.04% (18/357) across all WHO grades. Multivariate analysis revealed that the MET F/SVs were independently associated with worse survival in astrocytoma patients [overall survival (OS): p = 0.0011; progression-free survival (PFS): p = 0.004]. ZM fusion was associated with a worse prognosis in both astrocytoma (OS p < 0.001, PFS p < 0.001) and glioblastoma (OS, p = 0.252; PFS, p = 0.010) patients. We highlight the utmost relevance of ZM fusion as an adverse prognostic factor in astrocytoma (11/382, 2.88%) and glioblastoma grade 4 (11/401, 2.74%) patients and suggest that the grading of these tumors should be refined.
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