Clear cell sarcoma expressing a novel chimerical transcript EWSR1 exon 7/ATF1 exon 6
2012
Clear cell sarcoma harbours recurrent translocation, resulting in EWSR1/ATF1 or less commonly EWSR1/CREB1 fusion. To date, six types of EWSR1/ATF1 fusion have been reported, of which three are in-frame and encode functional proteins. We present a reverse transcription - polymerase chain reaction analysis of a tumour near the hallux of the right foot. The sequencing of obtained fragments revealed the presence of a novel chimerical transcript—the in-frame fusion between EWSR1 exon 7 and ATF1 exon 6 that represents the fourth in-frame type of EWSR1/ATF1 fusion identified in clear cell sarcomas.
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