PMID- 23071863 OWN - NLM STAT- MEDLINE DCOM- 20130404 LR - 20211203 IS - 1936-2625 (Electronic) IS - 1936-2625 (Linking) VI - 5 IP - 8 DP - 2012 TI - Phosphorylated mTOR expression correlates with poor outcome in early-stage triple negative breast carcinomas. PG - 806-13 AB - The mammalian target of rapamycin (mTOR) plays an important role in cell growth, proliferation, and metabolism. Some studies have associated phosphorylated mTOR (p-mTOR) expression with worse outcome in breast cancers. However, the significance of p-mTOR expression specifically in triple negative breast carcinoma (TNBC) is unknown. In this study, p-mTOR expression was evaluated by immunohistochemistry in 172 TNBCs and the result was correlated with clinicopathologic variables and disease outcome. The majority of tumors (72.1%) were p-mTOR positive; p-mTOR expression did not correlate with age, tumor size, grade, lymph node status, or tumor stage. In patients at stage 1 and 2 disease, those with p-mTOR expression had significantly worse overall as well as recurrence-free survival compared to those without p-mTOR expression. p-mTOR expression appears to be an adverse prognostic indicator in early-stage TNBCs. The assessment of p-mTOR expression in these tumors may also help to stratify patients for future target therapy studies. FAU - Ueng, Shir-Hwa AU - Ueng SH AD - Department of Pathology, Chang Gung Memorial Hospital Linko, Taiwan. FAU - Chen, Shin-Cheh AU - Chen SC FAU - Chang, Yu-Sun AU - Chang YS FAU - Hsueh, Swei AU - Hsueh S FAU - Lin, Yung-Chang AU - Lin YC FAU - Chien, Hui-Ping AU - Chien HP FAU - Lo, Yun-Feng AU - Lo YF FAU - Shen, Shih-Che AU - Shen SC FAU - Hsueh, Chuen AU - Hsueh C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121001 PL - United States TA - Int J Clin Exp Pathol JT - International journal of clinical and experimental pathology JID - 101480565 RN - 0 (Biomarkers, Tumor) RN - 0 (Receptors, Estrogen) RN - 0 (Receptors, Progesterone) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Biomarkers, Tumor/metabolism MH - Breast Neoplasms/metabolism/mortality/*pathology MH - Carcinoma, Ductal, Breast/metabolism/mortality/*secondary MH - Combined Modality Therapy MH - Female MH - Humans MH - Lymph Nodes MH - Lymphatic Metastasis MH - Phosphorylation MH - Prognosis MH - Receptor, ErbB-2/*metabolism MH - Receptors, Estrogen/*metabolism MH - Receptors, Progesterone/*metabolism MH - Survival Rate MH - TOR Serine-Threonine Kinases/*metabolism MH - Taiwan/epidemiology PMC - PMC3466984 OTO - NOTNLM OT - Phosphorylated mammalian target of rapamycin (p-mTOR) OT - breast cancer OT - triple negative EDAT- 2012/10/17 06:00 MHDA- 2013/04/05 06:00 PMCR- 2012/10/01 CRDT- 2012/10/17 06:00 PHST- 2012/08/13 00:00 [received] PHST- 2012/09/07 00:00 [accepted] PHST- 2012/10/17 06:00 [entrez] PHST- 2012/10/17 06:00 [pubmed] PHST- 2013/04/05 06:00 [medline] PHST- 2012/10/01 00:00 [pmc-release] PST - ppublish SO - Int J Clin Exp Pathol. 2012;5(8):806-13. Epub 2012 Oct 1.