GATA3 and breast cancer: Patients aged <45 years with BC showed an increased expression of growth factors and cell cycle progression genes [21]; patients aged <45 years showed a high prevalence of the GATA3 mutation [22]; those aged <35 years showed an increased expression and/or mutations of GATA3 and ARID1A [23]; and patients aged <40 years showed an increased expression of RANKL [24].