GATA3 and breast cancer: Apart from these biomarkers for breast cancer, mounting evidence also indicated that expressions of GATA3 and E-cadherin in breast cancer are strongly associated with ductal differentiation and a favourable prognosis, suggestive of new breast cancer biomarkers (Mehra et al, 2005; Eeckhoute et al, 2007; Voduc et al, 2008; Kouros-Mehr et al, 2008b).