Gliomas are a heterogeneous type of central nervous system tumor. The etiology of glioma formation remains elusive, with approximately 5% of gliomas being familial, underscoring the significance of understanding genetic susceptibility in glioma development. In this study, a dual germline PTCH2 mutation [Ser391*, Leu104Pro] was identified in a family with a history of glioma, and sequencing data from WES/SimcereDx Neuro-Onco 360 including 910 Chinese patients with glioma and 1666 patients with solid tumors were analyzed. A potential link between PTCH2 mutations and glioma development was observed in the Chinese population. Comprehensive analysis revealed that gliomas harboring dual PTCH2 mutations were segregated into two distinct clinical subtypes, indicating that the presence of PTCH2 is a novel genetic risk factor for glioma. These findings expand the genetic risk profile of glioma and offer promising avenues for the development of targeted diagnostic and therapeutic strategies. The results of this study emphasize the necessity for a comprehensive investigation into the genetic predisposition to gliomas, particularly in Asian populations, to achieve a better understanding of and management strategy for this complex disease.
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