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- W2540409119 abstract "// Elizabeth Shurell 1, * , Maria E. Vergara-Lluri 2, * , Yunfeng Li 3 , Joseph G. Crompton 1 , Arun Singh 4 , Nicholas Bernthal 5 , Hong Wu 3 , Fritz C. Eilber 1 , Sarah M. Dry 2 1 Division of Surgical Oncology, University of California, Los Angeles, CA 90095, USA 2 Department of Pathology and Laboratory Medicine, University of California, Los Angeles, CA 90095, USA 3 Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA 90095, USA 4 Department of Hematology/Oncology, University of California, Los Angeles, CA 90095, USA 5 Department of Orthopaedic Surgery, University of California, Los Angeles, CA 90095, USA * Co-first author Correspondence to: Fritz C. Eilber, email: fceilber@mednet.ucla.edu Keywords: NY-ESO-1, sarcoma, MPNST, liposarcoma, immunotherapy Received: July 28, 2016 Accepted: September 09, 2016 Published: September 17, 2016 ABSTRACT Background: Immunotherapy targeting cancer-testis antigen NY-ESO-1 shows promise for tumors with poor response to chemoradiation. Malignant peripheral nerve sheath tumors (MPNSTs) and liposarcomas (LPS) are chemoresistant and have few effective treatment options. Materials Methods: Using a comprehensive tissue microarray (TMA) of both benign and malignant tumors in primary, recurrent, and metastatic samples, we examined NY-ESO-1 expression in peripheral nerve sheath tumor (PNST) and adipocytic tumors. The PNST TMA included 42 MPNSTs (spontaneous n = 26, NF1-associated n = 16), 35 neurofibromas (spontaneous n = 22, NF-1 associated n = 13), 11 schwannomas, and 18 normal nerves. The LPS TMA included 48 well-differentiated/dedifferentiated (WD/DD) LPS, 13 myxoid/round cell LPS, 3 pleomorphic LPS, 8 lipomas, 1 myelolipoma, and 3 normal adipocytic tissue samples. Stained in triplicate, NY-ESO-1 intensity and density were scored. Results: NY-ESO-1 expression was exclusive to malignant tumors. 100% of myxoid/round cell LPS demonstrated NY-ESO-1 expression, while only 6% of WD/DD LPS showed protein expression, one of which was WD LPS. Of MPNST, 4/26 (15%) spontaneous and 2/16 (12%) NF1-associated MPNSTs demonstrated NY-ESO-1 expression. Strong NY-ESO-1 expression was observed in myxoid/round cell and dedifferentiated LPS, and MPNST in primary, neoadjuvant, and metastatic settings. Conclusions: We found higher prevalence of NY-ESO-1 expression in MPNSTs than previously reported, highlighting a subset of MPNST patients who may benefit from immunotherapy. This study expands our understanding of NY-ESO-1 in WD/DD LPS and is the first demonstration of staining in a WD LPS and metastatic/recurrent myxoid/round cell LPS. These results suggest immunotherapy targeting NY-ESO-1 may benefit patients with aggressive tumors resistant to conventional therapy." @default.
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- W2540409119 date "2016-09-17" @default.
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- W2540409119 title "Comprehensive adipocytic and neurogenic tissue microarray analysis of NY-ESO-1 expression - a promising immunotherapy target in malignant peripheral nerve sheath tumor and liposarcoma" @default.
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- W2540409119 doi "https://doi.org/10.18632/oncotarget.12096" @default.
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