TTF-1 and PAX5 are frequently expressed in combined Merkel cell carcinoma

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11140%2F16%3A10324176" target="_blank" >RIV/00216208:11140/16:10324176 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1097/DAD.0000000000000464" target="_blank" >http://dx.doi.org/10.1097/DAD.0000000000000464</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1097/DAD.0000000000000464" target="_blank" >10.1097/DAD.0000000000000464</a>

Result language

angličtina

Original language name

TTF-1 and PAX5 are frequently expressed in combined Merkel cell carcinoma

Original language description

Thyroid transcription factor-1 (TTF-1) is a marker of vtumors of pulmonary and thyroid origin, and its expression practically excludes diagnosis of Merkel cell carcinoma (MCC). However, TTF-1 expression in combined MCC was recently reported. PAX5 is a marker of B-cell origin that is also expressed in most classical MCC cases; however, its expression was not described in combined MCC. The authors decided to evaluate the expression of both these markers in a group of 5 combined MCCs (2 with invasive squamous cell carcinoma, 2 with squamous cell carcinoma in situ, and 1 with basal cell carcinoma). Expression of TTF-1 was found in 4 of 5 cases; in 3 cases, the marker was shown in the MCC component (weakly in 2 cases and strongly in 1 case), whereas the non-MCC component presented TTF-1 expression in 2 cases. A weak-to-moderate immunoreactivity for PAX5 was identified in all cases of the MCC component but in none of the non- MCC component. The results show that the expression of TTF-1 is a frequent finding in combined MCC and can be present in the neuroendocrine component, which differs from the conventional MCC. In contrast, PAX5 expression pattern is similar to that of the classical MCC.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

FP - Other medical fields

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

American Journal of Dermatopathology

ISSN

0193-1091

e-ISSN

—

Volume of the periodical

38

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

513-516

UT code for WoS article

000378157800010

EID of the result in the Scopus database

2-s2.0-84975471969