Author:
Ueno-Yokohata Hitomi,Okita Hajime,Nakasato Keiko,Kiyotani Chikako,Kato Motohiro,Matsumoto Kimikazu,Kiyokawa Nobutaka,Nakazawa Atsuko,Yoshioka Takako
Abstract
Abstract
Background
Detection of the tumor-specific EWSR1/FUS-ETS fusion gene is essential to diagnose Ewing sarcoma. Reverse transcription–polymerase chain reaction (RT–PCR) and fluorescence in situ hybridization are commonly used to detect the fusion gene, and assays using next-generation sequencing have recently been reported. However, at least 28 fusion transcript variants have been reported, making rapid and accurate detection difficult.
Methods
We constructed two sets of multiplex PCR assays and evaluated their utility using cell lines and clinical samples.
Results
EWSR1/FUS-ETS was detected in five of six tumors by the first set, and in all six tumors by the second set. The fusion gene detected only by the latter was EWSR1-ERG, which completely lacked exon 7 of EWSR1. The fusion had a short N-terminal region of EWSR1 and showed pathologically atypical features.
Conclusions
We developed multiplex RT–PCR assays to detect EWSR1-ETS and FUS-ETS simultaneously. These assays will aid the rapid and accurate diagnosis of Ewing sarcoma. In addition, variants of EWSR1/FUS-ETS with a short N-terminal region that may have been previously missed can be easily detected.
Funder
grant from the national center for child health and development
japan agency for medical research and development
Publisher
Springer Science and Business Media LLC
Subject
General Medicine,Histology,Pathology and Forensic Medicine
Cited by
2 articles.
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