Expression of DBC1 and SIRT1 is associated with poor prognosis for breast carcinoma.
Recently, it has been reported that SIRT1 and DBC1 may be involved in the development of tumors and predict poor survival in some cancers. However, their exact role is not clear. Therefore, we investigated the expression status and clinical significance of DBC1 and SIRT1 expression in breast carcinomas. We evaluated the immunohistochemical expression of DBC1, SIRT1, and p53 using a 3-mm core from 122 patients with breast cancer for tissue microarray. Positive expression of DBC1 and SIRT1 were seen in 71% and 67% of patients, respectively. In the patients with breast cancer, overall, expression of DBC1 and SIRT1 was significantly associated with distant metastatic relapse and shorter relapse-free survival and overall survival by univariate analysis. Tumor stage and DBC1 and SIRT1 expression were also independent prognostic factors by multivariate analysis. Among the patients who had received chemotherapy, DBC1 and SIRT1 expression was significantly associated with distant metastatic relapse and shorter survival by univariate analysis. DBC1 expression was also associated with distant metastatic relapse and shorter survival in patients who had received endocrine therapy, according to univariate and multivariate analysis. In conclusion, this study shows that expression of DBC1 and SIRT1 is a significant prognostic indicator for breast carcinoma patients.
Department of Forensic Medicine, Chonbuk National University Medical School, Research Institute of Clinical Medicine and Institute for Medical Sciences, Jeonju, Jeonbuk 561-180, South Korea.
Ho
H
Lee
Kyung Ryoul
KR
Kim
Sang Jae
SJ
Noh
Ho Sung
HS
Park
Keun Sang
KS
Kwon
Byung-Hyun
BH
Park
Sung Hoo
SH
Jung
Hyun Jo
HJ
Youn
Byoung Kil
BK
Lee
Myoung Ja
MJ
Chung
Dai Ha
DH
Koh
Woo Sung
WS
Moon
Kyu Yun
KY
Jang
D048868:Adaptor Proteins, Signal Transducing / Q000378:metabolism*; D000970:Antineoplastic Agents / Q000627:therapeutic use; D014408:Biomarkers, Tumor / Q000378:metabolism; D001943:Breast Neoplasms / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000378:metabolism* / Q000401:mortality / Q000556:secondary; D005260:Female; D006801:Humans; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D056910:Republic of Korea / Q000453:epidemiology; D056564:Sirtuin 1 / Q000378:metabolism*; D015996:Survival Rate; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism
D048868:Adaptor Proteins, Signal Transducing; D000970:Antineoplastic Agents; D014408:Biomarkers, Tumor; C527450:CCAR2 protein, human; D016159:Tumor Suppressor Protein p53; C447939:SIRT1 protein, human; D056564:Sirtuin 1