PMID: 25796760Mar 24, 2015Paper

The drug of the month: everolimus (Afinitor) for the treatment of metastatic breast cancer

Revue médicale de Liège
Guy JerusalemJoelle Collignon

Abstract

Sequential endocrine treatments are recommended for estrogen receptor (ER) positive human epidermal growth factor receptor 2 (HER 2) negative metastatic breast cancers except in the case of symptomatic visceral disease. However, patients who suffer from disease progression while receiving a non-steroidal aromatase inhibitor (NSAI) have a very poor prognosis with standard endocrine therapy alone. Recently, based onthe results of the BOLERO 2 trial, the mammalian target of rapamycin (mTOR) inhibitor everolimus, combined with exemestane, a steroidal aromatase inhibitor, has been approved in Europe and the US for patients suffering from ER positive HER2 negative advanced breast cancer previously treated by a NSAI. The median progression-free survival (PFS) increased from 3.2 to 7.8 months in patients receiving everolimus and exemestane compared to placebo and exemestane. The magnitude of benefit was consistent in all pre-specified subgroups. Side effects were manageable and the quality of life was at least maintained. Everolimus has also beenrecently studied in HER2 positive locally advanced or metastatic disease in heavily pretreated patients (BOLERO 3 trial). This trial met its primary endpoint. The median PFS was increased in pa...Continue Reading

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