EGR1 and breast cancer: Our previous work has shown that Fyn expression is high in a panel of BC patients relative to those in chronic or accelerated phase [42], therefore, we examined Egr-1 protein expression in a tissue microarray (TMA) containing samples from CML patients in chronic phase (CP; n = 10), accelerated phase (AP; n = 6), and BC (n = 10) (Figure 3B).