Ewing-like sarcoma with CIC-DUX4 gene fusion in a patient with neurofibromatosis type 1. A hitherto unreported association.
Pathol Res Pract
; 211(11): 877-82, 2015 Nov.
Article
em En
| MEDLINE
| ID: mdl-26386605
ABSTRACT
Sarcoma with CIC-DUX4 gene fusion is emerging as the most prevalent subset of Ewing-like undifferentiated small round cell sarcomas with around 50 cases published. We report hereby the case of a 40-year-old male who presented a CIC-DUX4 sarcoma in deep soft tissues in his thigh. He had been diagnosed with neurofibromatosis type 1 at age 19 and over the years underwent resection of multiple neural neoplasms, including two malignant peripheral nerve sheath tumors with classical spindle-cell histopathology. The CIC-DUX4 sarcoma was treated with surgical resection, radiation and chemotherapy, but lung and brain metastases developed and the patient died from the disease 14 months after diagnosis. This is the first case of sarcoma with CIC-DUX4 gene fusion reported in a patient with NF1. Whether this association is coincidental or CIC-DUX4 sarcomas could be related to NF1 remains to be clarified. Study of alternative molecular alterations in EWSR1-negative undifferentiated small round cell sarcomas is clinically relevant, since CIC-DUX4 sarcomas seem to be a very aggressive subset with poor response to the presently used therapeutic regimens.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias de Tecidos Moles
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Proteínas de Fusão Oncogênica
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Neurofibromatose 1
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Sarcoma de Células Pequenas
Tipo de estudo:
Risk_factors_studies
Limite:
Adult
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Humans
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Male
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article