ICAM1 and melanoma: In TCGA melanoma cohort, the prognosis of high‐ICAM1 expression group was significantly worse than low‐ICAM1 expression group (low‐ICAM1 group vs. high ICAM1 group: hazard ratio 0.61, p < 0.001; log‐rank p < 0.001; Supplement Figure S1B).