摘要DNA甲基化是目前研究最为广泛和深入的表观遗传学修饰形式。在中枢神经系统(CNS)中，DNA甲基化是肿瘤分型的有力辅助工具，已用于室管膜瘤、脑膜瘤等多种肿瘤的分子分型，从而更准确地预测了肿瘤生物学行为及生存预后，为患者个体化治疗方案的制定提供了重要依据。另外，DNA甲基化也已成为重要的辅助诊断依据，用于CNS中不同类型肿瘤的鉴别，从而提高了病理诊断的准确性，甚至帮助发现了新的肿瘤实体。本文现围绕DNA甲基化在CNS肿瘤分子分型及病理诊断中的应用进展进行综述，以期为临床上CNS肿瘤的精准诊疗提供更多启示。

abstractsDNA methylation is an epigenetic modification form with the most extensive and in-depth studying. DNA methylation is a powerful tool for tumor classification in the central nervous system (CNS), which is used in the molecular classification of various tumors, such as ependyma and meningioma, to accurately predict tumor biological behavior and survival prognosis, and to provide important information for individualized treatment. DNA methylation will also become an important auxiliary diagnostic method for the identification of different types of CNS tumors, improve the accuracy of pathological diagnosis, and even help to find new tumor entities. In the current review, we focus on the role of DNA methylation in the molecular classification and pathological diagnosis of CNS tumors, in order to provide more enlightenment for accurate diagnoses and treatments of tumors.