The Breast. 2012 Dec;21(6):769-78. doi: 10.1016/j.breast.2012.04.010. Epub 2012 Jun 26.
Kok M., Koornstra R.H., Mook S., Hauptmann M., Fles R., Jansen M.P., Berns E.M., Linn S.C., Van ‘t Veer L.J.
In the series analysed, the 70-gene signature was mainly a prognostic factor, while ER and PR levels were mainly associated with outcome after tamoxifen. Combination of these three factors may improve outcome prediction in tamoxifen-treated patients.