Pediatric meningioma with a Novel MAML2-YAP1 fusion variant: a case report and literature review

Background Pediatric meningioma with YAP1 fusion is a rare subset of meningiomas. Currently, there are lack of integrated clinical, radiological, and pathological features on this subset. Here, we reported a case of pediatric meningioma with a novel MAML2-YAP1 fusion variant and reviewed the relevant literature. Case presentation We presented a case of 12-year-old boy with meningioma adjacent to the superior sagittal sinus and falx. Simpson grade II gross total resection was performed after diagnosis. Pathologically, he was diagnosed as WHO grade I meningothelial meningioma with rhabdoid features. A next-generation sequencing-based gene panel was performed to determine the molecular features for potential treatment, and a novel MAML2 - YAP1 fusion break point was identified. Conclusion Pediatric meningioma with the fusion of YAP1 and MAML2 genes is more likely to have pathological features of rhabdiod cells, which needs to be validated in large-scale studies for exploring better treatment under the integrated diagnosis.