“…Gene Expression Profiling (GEP) has demonstrated that breast cancer consists of at least five distinct molecular subtypes (Perou et al, 2000;Sorlie et al, 2001). These subtypes have different risk factors (Phipps et al, 2011) and clinicopathologic features (Chang et al, 2008;Cheang et al, 2008;Liedtke et al, 2008;Smid et al, 2008;Onitilio et al, 2009;Chuthapisith et al 2012). GEP is expensive and not widely available even in the developed world.…”