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Expression and significance of cancer testis antigens in primary mucosal melanoma of the head and neck

✍ Scribed by Manju L. Prasad; Achim A. Jungbluth; Snehal G. Patel; Kristin Iversen; Stacy Hoshaw-Woodard; Klaus J. Busam

Publisher: John Wiley and Sons
Year: 2004
Tongue: English
Weight: 755 KB
Volume: 26
Category: Article
ISSN: 1043-3074
DOI: 10.1002/hed.20112

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Background.

Cancer testis antigens (CTAs) are T‐cell–defined tumor‐associated antigens encoded by the genes and gene families such as MAGE, NY‐ESO‐1, and others. Their expression in a wide variety of malignant neoplasms but absence in all normal adult tissue except testicular germ cells makes them attractive targets for immunotherapy of cancer. Primary mucosal melanomas of the head and neck (HNMM) are rare aggressive malignant tumors that are usually difficult to treat. CTAs may provide useful targets for therapy; however, their expression in HNMM is not known.

Methods.

We analyzed 40 initial, 15 recurrent, and 15 metastatic HNMM to nonmucosal locations from 64 patients (oral, n = 30; sinonasal, n = 34). Immunohistochemistry was performed on archival tissue with monoclonal antibodies 57B, CT7‐33, and ES121 to the following CTAs: MAGE‐A4, CT7 (MAGE‐C1), and NY‐ESO‐1, respectively.

Results.

CT7, MAGE‐A4, and NY‐ESO‐1 expression was seen in 73%, 61%, and 24% of tumors, respectively, with 81% of the tumors expressing at least one of the CTAs. CT7 and MAGE‐A4 were significantly more frequently expressed in tumors composed of epithelioid cells than spindle cells (p = .05). CTA expression did not correlate with disease progression, overall survival, and disease‐specific survival.

Conclusions.

CT7, MAGEA4, and NY‐ESO‐1 are frequently expressed in HNMM and may be potential targets for CTA‐based immunotherapy. The expression does not seem to have prognostic significance. © 2004 Wiley Periodicals, Inc. Head Neck 26: 1053–1057, 2004

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