ArticleBMC cancer2026
Detection of IDH1.R132H mutant protein in plasma extracellular vesicles and its application in preoperative noninvasive precision diagnosis of glioma.
Article in BMC cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeDevelopment of a circulating extracellular vesicle-based IDH mutant protein detection technology for diagnosis of IDH mutation status in glioma, enabling personalized resection strategies, precision medication, and disease dynamics monitoring in IDH-mutant glioma.
methodsWe developed a tumor-classification strategy that discriminates tumor types by detecting the IDH1.R132H mutant protein in plasma extracellular vesicles using a bead-assisted, flow-cytometry–based assay. We assessed the differential expression’s capacity to distinguish tumor grades, analyzed pre-operative and post-operative expression variations, and verified consistency with histopathological immunohistochemistry.
resultsThe method demonstrated a diagnostic sensitivity of 76.2% (95%CI: 54.9%–89.4%) and a specificity of 86.7% (95%CI: 62.1%–96.3%) for IDH-mutant glioma. Further analysis revealed that the expression level of the IDH mutant protein in plasma EVs was significantly associated with tumor grade in IDH-mutant glioma (P < 0.0001). Moreover, the expression level of the IDH mutant protein in plasma EVs significantly decreased in post-operative patients (P < 0.01) and showed a high degree of consistency with the pathological immunohistochemical results at different tumor grades.
conclusionWe propose a novel plasma extracellular-vesicle liquid biopsy with potential preoperative application in detecting IDH-mutant glioma, affording noninvasive, rapid, efficient, and low-cost assessment of IDH mutation status.
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