TY - JOUR
T1 - A broad survey of cathepsin k immunoreactivity in human neoplasms
AU - Zheng, Gang
AU - Martignoni, Guido
AU - Antonescu, Cristina
AU - Montgomery, Elizabeth
AU - Eberhart, Charles
AU - Netto, George
AU - Taube, Janis
AU - Westra, William
AU - Epstein, Jonathan I.
AU - Lotan, Tamara
AU - Maitra, Anirban
AU - Gabrielson, Edward
AU - Torbenson, Michael
AU - Iacobuzio-Donahue, Christine
AU - Demarzo, Angelo
AU - Shih, Ie Ming
AU - Illei, Peter
AU - Wu, T. C.
AU - Argani, Pedram
PY - 2013/2
Y1 - 2013/2
N2 - Cathepsin K is consistently and diffusely expressed in alveolar soft part sarcoma (ASPS) and a subset of translocation renal cell carcinomas (RCCs). However, cathepsin K expression in human neoplasms has not been systematically analyzed. We constructed tissue microarrays (TMA) from a wide variety of human neoplasms, and performed cathepsin K immunohistochemistry (IHC). Only 2.7% of 1,140 carcinomas from various sites exhibited cathepsin K labeling, thus suggesting that among carcinomas, cathepsin K labeling is highly specific for translocation RCC. In contrast to carcinomas, cathepsin K labeling was relatively common (54.6%) in the 414 mesenchymal lesions studied, including granular cell tumor, melanoma, and histiocytic lesions, but not paraganglioma, all of which are in the morphologic differential diagnosis of ASPS. Cathepsin K IHC can be helpful in distinguishing ASPS and translocation RCC from some but not all of the lesions in their differential diagnosis.
AB - Cathepsin K is consistently and diffusely expressed in alveolar soft part sarcoma (ASPS) and a subset of translocation renal cell carcinomas (RCCs). However, cathepsin K expression in human neoplasms has not been systematically analyzed. We constructed tissue microarrays (TMA) from a wide variety of human neoplasms, and performed cathepsin K immunohistochemistry (IHC). Only 2.7% of 1,140 carcinomas from various sites exhibited cathepsin K labeling, thus suggesting that among carcinomas, cathepsin K labeling is highly specific for translocation RCC. In contrast to carcinomas, cathepsin K labeling was relatively common (54.6%) in the 414 mesenchymal lesions studied, including granular cell tumor, melanoma, and histiocytic lesions, but not paraganglioma, all of which are in the morphologic differential diagnosis of ASPS. Cathepsin K IHC can be helpful in distinguishing ASPS and translocation RCC from some but not all of the lesions in their differential diagnosis.
KW - Cathepsin K
KW - Immunohistochemistry
KW - TFE3
KW - TFEB
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UR - http://www.scopus.com/inward/citedby.url?scp=84875063007&partnerID=8YFLogxK
U2 - 10.1309/AJCPDTRTO2Z4UEXD
DO - 10.1309/AJCPDTRTO2Z4UEXD
M3 - Review article
C2 - 23355199
AN - SCOPUS:84875063007
SN - 0002-9173
VL - 139
SP - 151
EP - 159
JO - American journal of clinical pathology
JF - American journal of clinical pathology
IS - 2
ER -