Abstract
Clear cell carcinoma (CCC) is a rare epithelial malignant tumor of the salivary glands. It is characterized by tumor cells with clear cytoplasm, hyalinized stroma, and most importantly the fusion genes EWSR1-ATF1, EWSR1-CREM, and EWSR1-PLAG1. Break-apart FISH has been performed for multiple CCC cases, but direct sequencing analysis has been performed in relatively few. Herein, we report an interesting case of CCC harboring three EWSR1-ATF1 translocations: EWSR1 exon 8-ATF1 exon 4, EWSR1 exon 7-ATF1 exon 4, and EWSR1 exon 7-ATF1 exon 5. This case indicates the possibility of independent EWSR1-ATF1 gene translocations, and could provide insight into CCC tumorgenesis.
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The data in this study are available from the corresponding author, Eiichi Morii, upon reasonable request.
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EM designed this study. SN, HH, KH, SIN, KO, YF, ST, and EM interpreted histological and immmunohistochemical findings. SN also interpreted genetic findings and wrote the manuscript. MK performed direct sequence analysis. HK, YN, KM, NU, and MF contributed to patient management. All authors read and approved the final manuscript.
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The study in this case report was performed in accordance with the ethics committee requirement of Osaka University and with Declaration of Helsinki.
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Nojima, S., Kohara, M., Harada, H. et al. Clear Cell Carcinoma in the Oral Cavity with Three Novel Types of EWSR1-ATF1 Translocation: A Case Report. Head and Neck Pathol 16, 560–566 (2022). https://doi.org/10.1007/s12105-021-01356-y
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DOI: https://doi.org/10.1007/s12105-021-01356-y