TY - JOUR
T1 - Increased SIAH expression predicts ductal carcinoma in situ (DCIS) progression to invasive carcinoma
AU - Behling, Kathryn C.
AU - Tang, Amy
AU - Freydin, Boris
AU - Chervoneva, Inna
AU - Kadakia, Sameep
AU - Schwartz, Gordon F.
AU - Rui, Hallgeir
AU - Witkiewicz, Agnieszka K.
N1 - Funding Information:
Acknowledgments A.K.W. was supported by the Susan G. Komen Career Catalyst Grant.
PY - 2011/10
Y1 - 2011/10
N2 - Hyperactivated HER2/Neu/EGFR/RAS signaling is a major growth-promoting pathway known to drive cellular transformation and oncogenesis in breast cancers. HER2 amplification is detected in ~20% of all human breast cancer and is quite prevalent (up to 49%) in ductal carcinoma in situ (DCIS). The E3 ubiquitin ligase SIAH is considered a key downstream "gatekeeper" required for proper HER2/EGFR/RAS signal transduction. Formalin-fixed, paraffin-embedded resection specimens from 65 patients with DCIS treated with wide excision only were stained with an anti-SIAH antibody, and the percentage of tumor and normal adjacent tissue cells positive for SIAH nuclear staining were recorded. Statistical analysis was performed comparing SIAH staining in tumor cells to disease recurrence, histologic type, necrosis, hormone receptor status, and Her2/neu status, as well as nuclear grade. Correlation of SIAH expression in tumor cells with SIAH expression in normal adjacent tissue and age was also examined. Expression levels of SIAH in tumor cells was significantly higher in specimens from patients with recurrence (median = 19%) as compared to patients without recurrence (7%) (P < 0.001). There was also significantly increased SIAH expression in tumors with more aggressive features including comedo morphology (13.5% in comedo vs. 7% in other histologic types, P = 0.014). No significant association was observed between SIAH expression and estrogen receptor, progesterone receptor, and Her2/neu status. There was a significant correlation between SIAH expression in tumors and normal adjacent tissue (Spearman correlation = 0.58, P < 0.001) as well as between SIAH expression in normal adjacent tissue and patient age (Spearman correlation = -0.59, P < 0.001). No significant correlation was identified between patient age and SIAH expression in tumors (Spearman correlation = -0.23, P = 0.067). In conclusion, SIAH may represent a useful prognostic biomarker that predicts DCIS progression to invasive breast cancer.
AB - Hyperactivated HER2/Neu/EGFR/RAS signaling is a major growth-promoting pathway known to drive cellular transformation and oncogenesis in breast cancers. HER2 amplification is detected in ~20% of all human breast cancer and is quite prevalent (up to 49%) in ductal carcinoma in situ (DCIS). The E3 ubiquitin ligase SIAH is considered a key downstream "gatekeeper" required for proper HER2/EGFR/RAS signal transduction. Formalin-fixed, paraffin-embedded resection specimens from 65 patients with DCIS treated with wide excision only were stained with an anti-SIAH antibody, and the percentage of tumor and normal adjacent tissue cells positive for SIAH nuclear staining were recorded. Statistical analysis was performed comparing SIAH staining in tumor cells to disease recurrence, histologic type, necrosis, hormone receptor status, and Her2/neu status, as well as nuclear grade. Correlation of SIAH expression in tumor cells with SIAH expression in normal adjacent tissue and age was also examined. Expression levels of SIAH in tumor cells was significantly higher in specimens from patients with recurrence (median = 19%) as compared to patients without recurrence (7%) (P < 0.001). There was also significantly increased SIAH expression in tumors with more aggressive features including comedo morphology (13.5% in comedo vs. 7% in other histologic types, P = 0.014). No significant association was observed between SIAH expression and estrogen receptor, progesterone receptor, and Her2/neu status. There was a significant correlation between SIAH expression in tumors and normal adjacent tissue (Spearman correlation = 0.58, P < 0.001) as well as between SIAH expression in normal adjacent tissue and patient age (Spearman correlation = -0.59, P < 0.001). No significant correlation was identified between patient age and SIAH expression in tumors (Spearman correlation = -0.23, P = 0.067). In conclusion, SIAH may represent a useful prognostic biomarker that predicts DCIS progression to invasive breast cancer.
KW - DCIS
KW - Ductal carcinoma in situ
KW - SIAH
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UR - http://www.scopus.com/inward/citedby.url?scp=80052598428&partnerID=8YFLogxK
U2 - 10.1007/s10549-010-1254-8
DO - 10.1007/s10549-010-1254-8
M3 - Article
C2 - 21088888
AN - SCOPUS:80052598428
SN - 0167-6806
VL - 129
SP - 717
EP - 724
JO - Breast Cancer Research and Treatment
JF - Breast Cancer Research and Treatment
IS - 3
ER -