TY - JOUR
T1 - Differential expression of hormonal and growth factor receptors in salivary duct carcinomas
T2 - Biologic significance and potential role in therapeutic stratification of patients
AU - Williams, Michelle D.
AU - Roberts, Dianna
AU - Blumenschein, George R.
AU - Temam, Stephane
AU - Kies, Merrill S.
AU - Rosenthal, David I.
AU - Weber, Randal S.
AU - El-Naggar, Adel K.
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2007/11
Y1 - 2007/11
N2 - Salivary duct carcinoma (SDC), a rare malignancy, manifests remarkable morphologic and biologic resemblance to high-grade mammary ductal carcinoma. We contend that, similar to mammary ductal carcinoma, hormones and growth factors may play a role in SDCs. Our aim was to determine the incidence and clinical significance of the expression of several hormone and growth factor receptors and evaluate their potential in therapeutic stratification of SDC patients in the largest cohort studied to date. Eighty-four archived tumor tissue blocks were analyzed immunohistochemically for expression of estrogen receptor-β (ERβ), androgen receptor (AR), and proline, glutamic acid, and leucine-rich protein-1 and growth factor receptors HER-2 and epidermal growth factor receptor. The results were correlated with available pathologic, demographic, and clinical data from 59 of 84 cases. Proline, glutamic acid, and leucine-rich protein-1, ERβ, and AR were expressed individually in 94% (71/76), 73% (57/80), and 67% (56/84) of SDCs, respectively, and coexpressed in 45% (34/75). AR was expressed significantly more often in SDCs of men than in SDCs of women [79% (35/57) vs. 33% (9/27), P<0.001]. Epidermal growth factor receptor and HER-2 were overexpressed individually in 48% (40/83) and 25% (21/84), respectively, and co-overexpressed in 12% (10/83). Survival decreased significantly in patients with lymph node metastasis (P=0.002) and positive surgical margins (P=0.006). Lack of ERβ expression correlated with increased local and regional recurrence (P=0.05 and P=0.002, respectively). Together, these results indicate that (a) ERβ down-regulation is associated with adverse clinical features, (b) lymph node and surgical margin status are significant survival factors, and (c) the differential expression of these hormones and growth factor receptors may assist in triaging patients with SDC for novel therapies.
AB - Salivary duct carcinoma (SDC), a rare malignancy, manifests remarkable morphologic and biologic resemblance to high-grade mammary ductal carcinoma. We contend that, similar to mammary ductal carcinoma, hormones and growth factors may play a role in SDCs. Our aim was to determine the incidence and clinical significance of the expression of several hormone and growth factor receptors and evaluate their potential in therapeutic stratification of SDC patients in the largest cohort studied to date. Eighty-four archived tumor tissue blocks were analyzed immunohistochemically for expression of estrogen receptor-β (ERβ), androgen receptor (AR), and proline, glutamic acid, and leucine-rich protein-1 and growth factor receptors HER-2 and epidermal growth factor receptor. The results were correlated with available pathologic, demographic, and clinical data from 59 of 84 cases. Proline, glutamic acid, and leucine-rich protein-1, ERβ, and AR were expressed individually in 94% (71/76), 73% (57/80), and 67% (56/84) of SDCs, respectively, and coexpressed in 45% (34/75). AR was expressed significantly more often in SDCs of men than in SDCs of women [79% (35/57) vs. 33% (9/27), P<0.001]. Epidermal growth factor receptor and HER-2 were overexpressed individually in 48% (40/83) and 25% (21/84), respectively, and co-overexpressed in 12% (10/83). Survival decreased significantly in patients with lymph node metastasis (P=0.002) and positive surgical margins (P=0.006). Lack of ERβ expression correlated with increased local and regional recurrence (P=0.05 and P=0.002, respectively). Together, these results indicate that (a) ERβ down-regulation is associated with adverse clinical features, (b) lymph node and surgical margin status are significant survival factors, and (c) the differential expression of these hormones and growth factor receptors may assist in triaging patients with SDC for novel therapies.
KW - Androgen receptor
KW - Epidermal growth factor
KW - Estrogen receptor-β
KW - HER-2
KW - Salivary duct carcinoma
UR - http://www.scopus.com/inward/record.url?scp=37349018981&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=37349018981&partnerID=8YFLogxK
U2 - 10.1097/PAS.0b013e3180caa099
DO - 10.1097/PAS.0b013e3180caa099
M3 - Article
C2 - 18059220
AN - SCOPUS:37349018981
SN - 0147-5185
VL - 31
SP - 1645
EP - 1652
JO - American Journal of Surgical Pathology
JF - American Journal of Surgical Pathology
IS - 11
ER -