CD117 (c-KIT): cluster of differentiation 117; DOG1: Discovered on GIST-1; CD34: cluster of differentiation 34, SMA: smooth muscle actin; PanCK: pan-cytokeratin; CD45: cluster of differentiation 45; CD31: cluster of differentiation 31; HMB45: human melanoma black 45; SSTR2: somatostatin receptor type 2; GATA3: GATA binding protein 3. The gene discussed is GATA3; the disease is melanoma.