Taken together, the concordance rates of the tumor tissue versus plasma and the metastatic lymph node versus plasma of BRAF results were 23.9% (17/71) and 11.1% (3/27), respectively, which did not display any statistical association (κ = 0.032, p = 0.465; κ = 0.030, p = 0.561, respectively). The gene discussed is BRAF; the disease is neoplasm.