Interhemispheric Pediatric Meningioma, YAP1 Fusion-Positive

Area of Science:

• Neuro-oncology
• Molecular pathology
• Pediatric oncology

Background:

• Meningiomas are rare in children, often associated with genetic syndromes.
• YAP1-fusions are newly identified as potential drivers in pediatric meningiomas, independent of NF2.
• Understanding these molecular drivers is crucial for diagnosis and treatment.

Observation:

• This study presents a case of a YAP1-fusion-positive atypical meningioma in a young child.
• The case is compared with previously reported YAP1-fused meningiomas.
• The clinico-pathological features of YAP1-fused meningiomas are extended.

Findings:

• YAP1-fusions represent a distinct molecular subgroup of pediatric meningiomas.
• These fusions are identified as potential NF2-independent oncogenic drivers.
• The study provides additional diagnostic clues for YAP1-fused meningiomas.

Implications:

• Highlights the importance of molecular profiling in pediatric meningiomas.
• Suggests an integrated diagnostic approach combining histology, molecular data, neuroradiology, and clinical findings.
• Emphasizes the need for further research into YAP1-fusion-driven meningiomas for targeted therapies.