Our study found the coordinated expression of FGF13 and miR-504 in most cancer types, such as GBMLGG (r = 0.64, FDR < 0.01), LUAD (r = 0.64, FDR < 0.01), LUSC (r = 0.57, FDR < 0.01), PCPG (r = 0.66, FDR < 0.01), SKCM (r = 0.52, FDR < 0.01), TGCT (r = 0.58, FDR < 0.01), and THYM (r = 0.78, FDR < 0.01). The gene discussed is FGF13; the disease is cancer.