GATA3 and breast cancer: Previous studies have indicated that GATA3 was weakly expressed in a wide variety of normal tissues, while its expression was remarkably elevated in breast cancer (Yang and Nonaka, 2010; Liu et al., 2012); moreover, GATA3 has been identified as a novel clinical marker for detecting primary and metastatic breast cancer (Cimino-Mathews et al., 2013; Krings et al., 2014; Shield et al., 2014; Braxton et al., 2015; Sangoi et al., 2016; Yang et al., 2017).