PMID- 22553196 OWN - NLM STAT- MEDLINE DCOM- 20130329 LR - 20211203 IS - 1569-8041 (Electronic) IS - 0923-7534 (Linking) VI - 23 IP - 10 DP - 2012 Oct TI - mTOR inhibitors in the management of hormone receptor-positive breast cancer: the latest evidence and future directions. PG - 2526-2535 LID - S0923-7534(19)37961-X [pii] LID - 10.1093/annonc/mds075 [doi] AB - BACKGROUND: There is an unmet therapeutic need in endocrine-resistant, hormone receptor (HR)-positive, human epidermal growth factor receptor 2-negative advanced breast cancer (BC). Preclinical studies support the hypothesis that the mammalian target of rapamycin (mTOR) inhibition could potentially overcome resistance to endocrine therapy. MATERIALS AND METHODS: A literature review regarding BC and mTOR inhibitors was undertaken. The reference lists from retrieved manuscripts were reviewed to identify further studies. RESULTS: Phase II studies have reported that the combination of mTOR inhibitors with endocrine therapy shows efficacy in patients with advanced disease that progressed after treatment with aromatase inhibitors. The recent findings of the phase III BOLERO-2 confirmed that everolimus in combination with exemestane significantly improved progression-free survival and response rate, with a manageable safety profile. CONCLUSIONS: The addition of everolimus to exemestane for women with HR-positive metastatic BC is now considered a new therapeutic strategy. However, a word of caution should be added regarding toxic effects, which might limit practical use and compliance. It is essential that clinicians are educated about key recommendations for toxicity management and specific guideline dose modifications. Additional research efforts with the addition of these compounds in the early-stage setting is greatly needed to improve the survival of patients with HR-positive BC. FAU - Villarreal-Garza, C AU - Villarreal-Garza C AD - Department of Medical Oncology, Instituto Nacional de Cancerologia, Mexico DF, Mexico. FAU - Cortes, J AU - Cortes J AD - Breast Cancer Unit, Vall d'Hebron Institute of Oncology, Vall d'Hebron University Hospital, Universitat Autonoma de Barcelona, Barcelona, Spain. FAU - Andre, F AU - Andre F AD - Breast Cancer Unit, Department of Medical Oncology, University Paris XI and Institut Gustave Roussy, Villejuif, France. FAU - Verma, S AU - Verma S AD - Department of Medical Oncology, Sunnybrook Odette Cancer Centre, Toronto, Canada. Electronic address: Sunil.verma@sunnybrook.ca. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20120502 PL - England TA - Ann Oncol JT - Annals of oncology : official journal of the European Society for Medical Oncology JID - 9007735 RN - 0 (Antineoplastic Agents) RN - 0 (Estrogen Receptor Modulators) RN - 0 (Receptors, Estrogen) RN - 0 (Receptors, Progesterone) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Antineoplastic Agents/*therapeutic use MH - Breast Neoplasms/*drug therapy/metabolism MH - Estrogen Receptor Modulators/therapeutic use MH - Evidence-Based Medicine MH - Female MH - Humans MH - Receptor, ErbB-2/*metabolism MH - Receptors, Estrogen/*metabolism MH - Receptors, Progesterone/*metabolism MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors EDAT- 2012/05/04 06:00 MHDA- 2013/03/30 06:00 CRDT- 2012/05/04 06:00 PHST- 2012/05/04 06:00 [entrez] PHST- 2012/05/04 06:00 [pubmed] PHST- 2013/03/30 06:00 [medline] AID - S0923-7534(19)37961-X [pii] AID - 10.1093/annonc/mds075 [doi] PST - ppublish SO - Ann Oncol. 2012 Oct;23(10):2526-2535. doi: 10.1093/annonc/mds075. Epub 2012 May 2.