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bioRxiv · 10.1101/039834

Osteosarcoma with apparent Ewing sarcoma gene rearrangement

Melissa Mathias·Alexander Chou·Paul Meyers·Neerav Shukla·Meera Hameed·Narasimhan Agaram·Lulu Wang·Michael Berger·Michael Walsh·Alex Kentsis
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Abstract

Poorly differentiated round cell sarcomas present diagnostic challenges due to their variable morphology and lack of specific immunophenotypic markers. We present a case of a 15-year-old female with a tibial tumor that exhibited features of Ewing-like sarcoma, including apparent rearrangement of the EWSR1 gene. Hybridization capture-based next-generation DNA sequencing showed evidence of complex genomic rearrangements, absence of known pathogenic Ewing-like chromosome translocations, and deletions RB1, PTCH1, and ATRX, supporting the diagnosis of osteosarcoma. This illustrates the potential of clinical genomic profiling to improve diagnosis and enable specifically targeted therapies for cancers with complex pathologies.

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Melissa Mathias, Alexander Chou, Paul Meyers, Neerav Shukla, Meera Hameed, Narasimhan Agaram, Lulu Wang, Michael Berger, Michael Walsh, Alex Kentsis. 2016-02-17. Osteosarcoma with apparent Ewing sarcoma gene rearrangement. https://doi.org/10.1101/039834

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