GATA4 and cancer: Other oncogenes or cancer-associated genes such as CCNE1 (19q12; O15), CD44 (11p13; Y21), CDK6 (7q21.2; Y11), GATA4 (8p23.1-p22; O19), and GATA6 (18q11.2; O17) were also located in regions with high copy number gains.