STC2 and cutaneous melanoma: Conversely, STC2 expression levels were negatively correlated with TMB in BRCA (r = −0.34, p < 0.001), ESCA(r = 0.24, p < 0.01), KIRP (r = −0.12, p < 0.05), PAAD (r = −0.24, p < 0.01), skin cutaneous melanoma (SKCM) (r = −0.10, p < 0.05), and THCA (r = −0.12, p < 0.01).