Ewing sarcoma with FEV gene rearrangements is a rare subset with predilection for extraskeletal locations and aggressive behavior

Abstract excerpt

The molecular hallmark of Ewing sarcoma (ES) is a fusion involving the EWSR1 gene and a member of the ETS family of transcription factors. EWSR1-FLI1 is the most common variant, occurring in 90% of cases, followed by EWSR1-ERG. In a small subset, the FUS gene can substitute for EWSR1 in these fusions. Only rare case reports have been described to date of ES with FEV gene rearrangements. In this study, we...

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