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CDX2 and LEF-1 expression in pilomatrical tumors and their utility in the diagnosis of pilomatrical carcinoma.

Abstract：

BACKGROUND:The Wnt signaling pathway has been implicated in the pathogenesis of pilomatrical tumors. Lymphoid enhancer-binding factor 1 (LEF-1) is a downstream component of this pathway, and Caudal-related homeobox transcription factor 2 (CDX2) has been postulated to regulate it, but little is known about expression of these transcription factors in pilomatrical tumors. METHODS:Immunohistochemistry for CDX2, β-catenin, LEF-1, CK19, CK5, Special AT-rich sequence- binding protein 2 (SATB2), cadherin 17 and androgen receptor was performed on pilomatricomas (PMs) (N = 12), pilomatrical carcinomas (PMCAs) (N = 12) and non-pilomatrical cutaneous tumors (N = 18). RESULTS:PMs and PMCAs were positive for CDX2 (9/12 PMs, sensitivity = 75%, specificity = 100%; 11/12 PMCAs, sensitivity = 92%, specificity = 100%; P < 0.01), β-catenin (12/12 PMs, sensitivity = 100%, specificity = 94%; 10/12 PMCAs, sensitivity = 83%, specificity = 94%; P < 0.01) and LEF-1 (12/12 PMs, sensitivity = 100%, specificity = 56%; 12/12 PMCAs, sensitivity = 100%, specificity = 56%; P < 0.01). CDX2 expression was commonly focal, within a discrete subpopulation of squamoid cells. The LEF-1 expression pattern was different and discernable between pilomatrical tumors (strong, diffuse) and non-pilomatrical tumors (weak, patchy). CONCLUSION:This study reaffirms the importance of the Wnt signaling pathway in the tumorigenesis of pilomatrical tumors, and this introduces CDX2 as a possible regulator and marker of pilomatrical tumorigenesis. LEF-1 and CDX2 performed at least as well as β-catenin, if not better when taking into account expression pattern, as a diagnostic marker for PMCA, and should be considered in the workup of ambiguous primitive-appearing cutaneous tumors.

journal_name

J Cutan Pathol

journal_title

Journal of cutaneous pathology

authors

Tumminello K,Hosler GA

doi

10.1111/cup.13113

subject

Has Abstract

pub_date

2018-05-01 00:00:00

pages

318-324

issue

5

eissn

0303-6987

issn

1600-0560

journal_volume

45

pub_type

杂志文章

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