A prospective planned pathology study within the TEAM trial confirms that progesterone receptor expression is prognostic but not predictive for differential response to exemestane versus tamoxifen. 30. Mai 2008 Bartlett, J., Brookes, C., Billingham, L., Campell, F., Gnant, M., Hasenburg, A., Hille, E., Kay, C., Kieback, D., Markopoulos, C., Meershok-Klein Kranenberg, E., Mallon, E., Paridaens, R., Putter, H., Robson, T., Seynaeve, C., van de Velde and D Rea, C., 2008. Cancer Res 69 (2 Supplement), 81. doi:10.1158/0008-5472.SABCS-81 Abstract