Soft tissue Ewing sarcoma--peripheral primitive neuroectodermal tumor with atypical clear cell pattern shows a new type of EWS-FEV fusion transcript.
Diagn Mol Pathol
; 9(3): 137-44, 2000 Sep.
Article
en En
| MEDLINE
| ID: mdl-10976720
This study describes a new case of Ewing sarcoma (ES)-peripheral primitive neuroectodermal tumor (pPNET) with unusual phenotype and fusion gene structure. The tumor located in the inguinal area of a 15-year-old boy showed a highly aggressive behavior with hematogenous metastases after intensive chemotherapy and bone marrow transplant, causing death 28 months after diagnosis. The tumor displayed a clear cell pattern, and several neuroectodermal markers proved positive both in the original tumor and in xenografts. This neuroectodermal character was confirmed by electron microscopy. Moreover, cytogenetically the tumor has an unusual chromosomal rearrangement, t(2;22)(q13;q22,t(3;18)(p21;q23); representing a new EWS-FEV fusion type in which exon 7 of EWS gene is fused with exon 2 of FEV gene. This is the third published study of an ES-pPNET showing EWS-FEV fusion described, but it is the first study of a tumor with the aforementioned fusion points. These findings support the genetic and morphologic heterogeneity existing within the group of ES-pPNET tumors.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sarcoma de Ewing
/
Neoplasias de los Tejidos Blandos
/
Translocación Genética
/
Cromosomas Humanos Par 2
/
Cromosomas Humanos Par 22
/
Proteínas de Fusión Oncogénica
/
Tumores Neuroectodérmicos Primitivos
Tipo de estudio:
Prognostic_studies
Límite:
Adolescent
/
Animals
/
Humans
/
Male
Idioma:
En
Revista:
Diagn Mol Pathol
Asunto de la revista:
BIOLOGIA MOLECULAR
/
PATOLOGIA
Año:
2000
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Estados Unidos